SAES-422 Multistate Research Activity Accomplishments Report
Sections
Status: Approved
Basic Information
- Project No. and Title: W45 : Mechanisms and Mitigation of Agrochemical Impacts on Human and Environmental Health
- Period Covered: 05/01/2000 to 04/01/2001
- Date of Report: 07/31/2001
- Annual Meeting Dates: 06/03/2001 to 06/05/2001
Participants
CSREES-USDA, J. Parochetti, California Agricultural Experiment Station Berkeley, D. G. Crosby, California Agricultural Experiment Station Davis, B.W. Wilson,R.I. Krieger, California Agricultural Experiment Station Riverside, J. Gan*, Cornell Agricultural Experiment Station - New York, A.T. Lemley*, S.M. Snedeker, Georgia Agricultural Experiment Station, K.L. Armbrust*, Nevada Agricultural Experiment Station, G.C. Miller, C.A. Pritsos, New Mexico Agricultural Experiment Station, T.M. Sterling, Oregon Agricultural Experiment Station, J. Jenkins*, Indiana Agricultural Experiment Station (Purdue University), L.S. Lee*, USDA-ARS, Beltsville, C.J. Hapeman*, USDA-ARS, Riverside, S. Papiernik*, Utah Agricultural Experiment Station, S.D. Aust*, Florida Agricultural Experiment Station, L.-T. Ou, A.V. Ogram, Hawaii Agricultural Experiment Station, Q.X. Li, J. Seifert, Washington Agricultural Experiment Station, A.S. Felsot, Administrative Advisor, Nevada, R.S. Pardini* * Attended 2001 annual meeting.
The annual W-45 meeting, June 3-5, in Beltsville, MD focused on these actions and details:
7Set new guidelines for regional multistate projects (listed on the Western regional web site)
7Urged each land grant institution to write an Impact Sheet to educate Congress; report collective impacts of regional projects; add impact discussions at future W-45 meetings
7Sharon Papiernik agreed to set up a W-45 web site
7Discussed collaboration and joint meeting with W-82, possibly at the June 2003 UNR meeting in NV
7Set next meeting date as June 9-11, 2002, Riverside salinity lab
7Invited Kevin Armbrust (U of Georgia) and Linda Lee (Purdue) to join W-45
7Eliminated the office of Vice Chair, leaving the Chair and Secretary to serve for 2 years
7Elected Chris Pritsos, Chair, and Quing Li, Secretary, for 2002-2003
7Agreed to submit to the chair the following impact statements: Indiana and Georgia, collaboration on pharmaceuticals in animals; ARS Beltsville and Georgia, PRZM/EXAMS modeling of pesticide fate in surface and groundwater; UC Davis and Oregon state, analytical methods for cholinesterase; Cornell, pesticide risks to children; Cornell, research on competitive kinetics to help degrade pesticide residues in wastewater.
http://www.ag.unr.edu/w45/Minutes/2001.PDF
7Set new guidelines for regional multistate projects (listed on the Western regional web site)
7Urged each land grant institution to write an Impact Sheet to educate Congress; report collective impacts of regional projects; add impact discussions at future W-45 meetings
7Sharon Papiernik agreed to set up a W-45 web site
7Discussed collaboration and joint meeting with W-82, possibly at the June 2003 UNR meeting in NV
7Set next meeting date as June 9-11, 2002, Riverside salinity lab
7Invited Kevin Armbrust (U of Georgia) and Linda Lee (Purdue) to join W-45
7Eliminated the office of Vice Chair, leaving the Chair and Secretary to serve for 2 years
7Elected Chris Pritsos, Chair, and Quing Li, Secretary, for 2002-2003
7Agreed to submit to the chair the following impact statements: Indiana and Georgia, collaboration on pharmaceuticals in animals; ARS Beltsville and Georgia, PRZM/EXAMS modeling of pesticide fate in surface and groundwater; UC Davis and Oregon state, analytical methods for cholinesterase; Cornell, pesticide risks to children; Cornell, research on competitive kinetics to help degrade pesticide residues in wastewater.
http://www.ag.unr.edu/w45/Minutes/2001.PDF
[Minutes]
Accomplishments
1. Identify, develop, and/or validate trace residue analytical methods, immunological procedures, and biomarkers:
Oregon Agric. Expt. Sta.. - Steelhead trout (Oncorhynchus mykiss) were exposed 96 hr to the organophosphate chlorpyrifos to establish benchmark concentrations (BMCs) in the sublethal range for brain acetylcholinesterase (AChE). Environmental Protection Agency (EPA) Benchmark Dose Software was used to model the data. BMCs were determined for a range of inhibition levels at 1%, 5%, 10%, 20%, 1 and 2 control standard deviations (SD), and at a limit of detection level of 2.5%. One difficulty in establishing AChE inhibition BMCs in this lower-response region is the variability associated with AChE analysis. To minimize this variability, the Ellman method was modified specifically for analysis of steelhead brain tissue. Laboratory established BMCs were then compared to EPA chlorpyrifos water quality standards, and concentrations of chlorpyrifos detected in agricultural surface waters containing threatened steelhead trout. The BMC01 estimates are near the EPAs 96 hr acute water quality criteria of 0.83 mg/L. The BMC02.5 estimates approach the average level of chlorpyrifos detected in surface waters at 0.127 mg/L. The BMC1SD estimates are within peak detection levels of 0.482 mg/L.
2. Characterize abiotic and biotic reaction mechanisms, transformation rates, and fate in agricultural and natural ecosystems:
USDA/ARS, Beltsville - Endosulfan, a broad spectrum insecticide that exists as two isomers, is used on cereals, fruits, vegetables, and cotton. The fate and transport of endosulfan is of particular interest because it is highly to toxic to certain aquatic organisms. Earlier research showed that the structure of one of the isomers, which had been used in all the previous fate studies, was incorrect. Furthermore, research has demonstrated that one isomer converts to the other but that the reverse process does not occur.Additional experiments and chemical computations have now established a mechanism for conversion and provided an explanation for preclusion of the reverse process. This work is important to US EPA because endosulfan is undergoing re-registration.
Purdue Univ. - Physical, chemical, and biological processes control persistence, distribution, and potential human and ecological exposure of contaminants in the soil, water, and in some cases, complex waste environment. Both applied and basic research are being conducted to address environmental fate of pharmaceutically active organic chemicals from animal wastes (e.g., selective antibiotics and hormone additives) and agricultural pesticides.Specific objectives include: (1) identify the occurrence and quantify the environmental fate of major antibiotics and hormones commonly used in animal production in soil and water at feeding operations; (2) quantify the contribution of anion exchange in the mobility of acidic pesticides in variable-charge soils as a function of solute pKa, pH, and the ionic matrix, and incorporate these findings into a transport model; and (3) quantify the formation of dibutylurea in soil from benomyl metabolites and subsequent persistence.
Cornell Agric. Expt. Sta. - New York - Anodic Fenton treatment (AFT) is a new technology intended for degrading pesticides in rinsewater and groundwater. Based on assumptions about AFT technology, a new kinetic model was developed to accurately describe the degradation kinetics of 2,4-D, a widely used herbicide, and to quantitatively investigate the effect of the systems operating conditions. It was found that an increased delivery rate of reagents increased the degradation rate of 2,4-D, but the efficiency was decreased. The effect of reagent ratio, temperature, initial concentration of 2,4-D, and presence of other organic compounds has also been investigated. This method is extremely useful because it allows one to use this technology as a controlled Fenton reaction to determine the degradation reaction rate constants of other compounds with hydroxyl radicals easily and accurately.
Florida Agric. Expt. Sta. - Only a small fraction of soil microorganisms can be cultured in the laboratory, perhaps less than 1%, the rest of them are unculturable. At present it is not clear the contribution from culturable and unculturable microorganisms in respect to biodegradation of agrochemicals in soil. We have studied biodegradation of the insecticide carbofuran in soil from a site in Florida since early 1990. Our previous investigations revealed that carbofuran degradation in soil at this site was enhanced and the enhancement progressively increased with an increase in number of annual applications of carbofuran. A number of bacteria that utilize carbofuran as a sole source of carbon for growth and energy were isolated from the soil. All the bacterial isolates belong to strains of Sphingomonas sp. On the other hand, we found that population of carbofuran ring degraders in the soil did not increase with an increase in number of annual applications. Therefore, we come to conclusion that unculturable carbofuran degraders likely play a major role in the degradation of the chemical in soil. Since unculturable microorganisms cannot be isolated from soil in the laboratory, a pertinent approach is to directly isolate metabolic genes responsible for carbofuran degradation from soil. Metabolic genes directly obtaining from soil DNA is called soil metagenome. Soil DNA is extracted and purified by gel electrophoresis. A bacterial artificial chromosome (BAC) is used as a vector for construction of BAC DNA libraries. Initially, we will screen for BAC clones that have the capacity to hydrolyze carbofuran. If some of the BAC clones are capable of hydrolyzing carbofuran, we will use the insert DNA to subclone carbofuran hydrolase gene. Eventually, we will try step by step to subclone the genes that degrade carbofuran phenol to its final oxidation products CO2 and H2O. This study represents a novel approach to harvest metabolic genes responsible for carbofuran degradation directly from soil DNA. If successful, this approach can be expanded to harvest metabolic genes for other agrochemicals for bioremediation or for production of metabolic products important to agriculture.
USDA-ARS, Riverside - Permeability of agricultural films to soil fumigants. Current soil fumigation practices often use plastic tarps to cover the soil surface during fumigation to reduce losses to the atmosphere. Because many of the plastic tarps currently used are permeable to fumigant compounds, a large fraction of chemical applied to the soil can escape to the atmosphere, where they can threaten human and environmental health. Plastic tarps which are less permeable are being developed to curb atmospheric emissions during soil fumigation. We developed a new approach for measuring the permeability of plastic films to gases. This method is more sensitive than currently-used methods and produces a mass transfer coefficient, which unlike other measures of permeability, is a characteristic of the film-chemical combination and not dependent on the difference in concentration across the film. This approach is useful as a testing method to develop new plastics for use in soil fumigation and to determine the effect of environmental conditions (such as temperature) on permeability. We tested the permeation of several fumigant compounds through various agricultural films. The method produced a precise and sensitive measure of film permeability.
3. Determine adverse impacts from agrochemical exposure to cells, organisms, and ecosystems.
California Agric. Expt. Station - Davis - Clinical laboratories were contacted and invited to participate in a split sample study of human blood AChE and non-specific cholinesterase (BChE) assays. Participants measured erythrocyte (RBC) AChE and/or plasma BChE from undiluted and 50 percent diluted blood, according to their practices. Samples were shipped to U.C. Davis and their activities determined Nine of 25 laboratories sent samples; two others performed their own comparisons and submitted data to the California Department of Pesticide Regulation. Best correlations were obtained with BChE activity. Correlations (R2) were 0.88 or above for 4 of 5 laboratories for BChE, and above 0.9 for 2 of 7 laboratories for AChE. Reasons for poor correlations may include difficulties in pipetting RBCs, storage and processing.
New Mexico Agric.. Expt. Sta, - Yellow starthistle is spreading steadily on western rangelands, causing loss of grazing land carrying capacity as well as serious damage to non-grazed land and recreational areas. This noxious weed can be effectively controlled at the seedling stage by foliar application of 0.28 kg a.e. ha-1 picloram. Resistance to picloram in yellow starthistle was observed near Dayton, WA in 1988 and was confirmed in 1990. To determine the inheritance of this resistance, reciprocal F1 crosses between susceptible and resistant plants were performed. Susceptible seeds of yellow starthistle (SCI-1) were collected from wildtype plants growing in Central Grade, ID. Resistant (RDW-1) seeds are second generation progeny of a plant (RDW) resistant to 0.56 kg a.e. ha-1 picloram from Dayton, WA. Progeny of this resistant plant was sprayed with 0.07 to 0.14 kg a.e. ha-1 picloram in the greenhouse and survivors were cross-pollinated to produce RDW-1 seed. Seed from reciprocal F1 crosses was collected and grown under greenhouse conditions until seedlings were five weeks old. Half of the F1 progeny from reciprocal crosses as well as RDW-1 and SCI-1 seedlings were sprayed with picloram at 0.28 kg a.e. ha-1 and half were sprayed with clopyralid at the same rate. All SCI-1 seedlings and F1 progeny died. Crosses to resistant and susceptible testers were then conducted among F1 progeny, SCI-1 and RDW-1 plants. Selfing rates of individuals used in the crosses were less than 0.1% suggesting that all progeny were hybrids. F2 progeny were screened with both herbicides and segregation ratios determined for the number of progeny surviving and dying. Chi square analyses of F1, F2, and testcross segregation data indicate that the resistant phenotype is recessive and conferred by a single gene with the original SCI-1 population being homozygous dominant for susceptibility. Picloram resistance as a recessive trait is consistent with the observations that while under no additional picloram selection pressure, resistance has not spread from where it was first identified and that no other picloram-resistant yellow starthistle populations have been identified.
4. Develop technologies that mitigate adverse human and environmental impacts.
Utah Agric. Expt. Sta. - Laccases are enzyme secreted by various wood-rotting fungi which can oxidize various chemicals using molecular oxygen as the oxidant. The enzymes use copper to oxidize chemicals while reducing molecular oxygen to water. In this research we investigated two fungi that have been reported to secrete laccases to determine conditions in which these are the only oxidative enzymes secreted. The final objective is to determine if fungi that secrete laccases are capable of degrading various pesticides. Trametes versicolor secreted significant amounts of laccase, however some manganese peroxidase activity was observed under all conditions. Pyconoprus cinnabarinus also exhibited significant laccase activity and no other oxidative enzyme except very low levels of cellobiose dehydrogenase, which would not be significant if cellulose was not used as the carbon nutrient. Thus P. cinnabarinus will be used in future studies where the fungus will be grown on glucose to test for the role of laccase in biodegradation.
Oregon Agric. Expt. Sta.. - Steelhead trout (Oncorhynchus mykiss) were exposed 96 hr to the organophosphate chlorpyrifos to establish benchmark concentrations (BMCs) in the sublethal range for brain acetylcholinesterase (AChE). Environmental Protection Agency (EPA) Benchmark Dose Software was used to model the data. BMCs were determined for a range of inhibition levels at 1%, 5%, 10%, 20%, 1 and 2 control standard deviations (SD), and at a limit of detection level of 2.5%. One difficulty in establishing AChE inhibition BMCs in this lower-response region is the variability associated with AChE analysis. To minimize this variability, the Ellman method was modified specifically for analysis of steelhead brain tissue. Laboratory established BMCs were then compared to EPA chlorpyrifos water quality standards, and concentrations of chlorpyrifos detected in agricultural surface waters containing threatened steelhead trout. The BMC01 estimates are near the EPAs 96 hr acute water quality criteria of 0.83 mg/L. The BMC02.5 estimates approach the average level of chlorpyrifos detected in surface waters at 0.127 mg/L. The BMC1SD estimates are within peak detection levels of 0.482 mg/L.
2. Characterize abiotic and biotic reaction mechanisms, transformation rates, and fate in agricultural and natural ecosystems:
USDA/ARS, Beltsville - Endosulfan, a broad spectrum insecticide that exists as two isomers, is used on cereals, fruits, vegetables, and cotton. The fate and transport of endosulfan is of particular interest because it is highly to toxic to certain aquatic organisms. Earlier research showed that the structure of one of the isomers, which had been used in all the previous fate studies, was incorrect. Furthermore, research has demonstrated that one isomer converts to the other but that the reverse process does not occur.Additional experiments and chemical computations have now established a mechanism for conversion and provided an explanation for preclusion of the reverse process. This work is important to US EPA because endosulfan is undergoing re-registration.
Purdue Univ. - Physical, chemical, and biological processes control persistence, distribution, and potential human and ecological exposure of contaminants in the soil, water, and in some cases, complex waste environment. Both applied and basic research are being conducted to address environmental fate of pharmaceutically active organic chemicals from animal wastes (e.g., selective antibiotics and hormone additives) and agricultural pesticides.Specific objectives include: (1) identify the occurrence and quantify the environmental fate of major antibiotics and hormones commonly used in animal production in soil and water at feeding operations; (2) quantify the contribution of anion exchange in the mobility of acidic pesticides in variable-charge soils as a function of solute pKa, pH, and the ionic matrix, and incorporate these findings into a transport model; and (3) quantify the formation of dibutylurea in soil from benomyl metabolites and subsequent persistence.
Cornell Agric. Expt. Sta. - New York - Anodic Fenton treatment (AFT) is a new technology intended for degrading pesticides in rinsewater and groundwater. Based on assumptions about AFT technology, a new kinetic model was developed to accurately describe the degradation kinetics of 2,4-D, a widely used herbicide, and to quantitatively investigate the effect of the systems operating conditions. It was found that an increased delivery rate of reagents increased the degradation rate of 2,4-D, but the efficiency was decreased. The effect of reagent ratio, temperature, initial concentration of 2,4-D, and presence of other organic compounds has also been investigated. This method is extremely useful because it allows one to use this technology as a controlled Fenton reaction to determine the degradation reaction rate constants of other compounds with hydroxyl radicals easily and accurately.
Florida Agric. Expt. Sta. - Only a small fraction of soil microorganisms can be cultured in the laboratory, perhaps less than 1%, the rest of them are unculturable. At present it is not clear the contribution from culturable and unculturable microorganisms in respect to biodegradation of agrochemicals in soil. We have studied biodegradation of the insecticide carbofuran in soil from a site in Florida since early 1990. Our previous investigations revealed that carbofuran degradation in soil at this site was enhanced and the enhancement progressively increased with an increase in number of annual applications of carbofuran. A number of bacteria that utilize carbofuran as a sole source of carbon for growth and energy were isolated from the soil. All the bacterial isolates belong to strains of Sphingomonas sp. On the other hand, we found that population of carbofuran ring degraders in the soil did not increase with an increase in number of annual applications. Therefore, we come to conclusion that unculturable carbofuran degraders likely play a major role in the degradation of the chemical in soil. Since unculturable microorganisms cannot be isolated from soil in the laboratory, a pertinent approach is to directly isolate metabolic genes responsible for carbofuran degradation from soil. Metabolic genes directly obtaining from soil DNA is called soil metagenome. Soil DNA is extracted and purified by gel electrophoresis. A bacterial artificial chromosome (BAC) is used as a vector for construction of BAC DNA libraries. Initially, we will screen for BAC clones that have the capacity to hydrolyze carbofuran. If some of the BAC clones are capable of hydrolyzing carbofuran, we will use the insert DNA to subclone carbofuran hydrolase gene. Eventually, we will try step by step to subclone the genes that degrade carbofuran phenol to its final oxidation products CO2 and H2O. This study represents a novel approach to harvest metabolic genes responsible for carbofuran degradation directly from soil DNA. If successful, this approach can be expanded to harvest metabolic genes for other agrochemicals for bioremediation or for production of metabolic products important to agriculture.
USDA-ARS, Riverside - Permeability of agricultural films to soil fumigants. Current soil fumigation practices often use plastic tarps to cover the soil surface during fumigation to reduce losses to the atmosphere. Because many of the plastic tarps currently used are permeable to fumigant compounds, a large fraction of chemical applied to the soil can escape to the atmosphere, where they can threaten human and environmental health. Plastic tarps which are less permeable are being developed to curb atmospheric emissions during soil fumigation. We developed a new approach for measuring the permeability of plastic films to gases. This method is more sensitive than currently-used methods and produces a mass transfer coefficient, which unlike other measures of permeability, is a characteristic of the film-chemical combination and not dependent on the difference in concentration across the film. This approach is useful as a testing method to develop new plastics for use in soil fumigation and to determine the effect of environmental conditions (such as temperature) on permeability. We tested the permeation of several fumigant compounds through various agricultural films. The method produced a precise and sensitive measure of film permeability.
3. Determine adverse impacts from agrochemical exposure to cells, organisms, and ecosystems.
California Agric. Expt. Station - Davis - Clinical laboratories were contacted and invited to participate in a split sample study of human blood AChE and non-specific cholinesterase (BChE) assays. Participants measured erythrocyte (RBC) AChE and/or plasma BChE from undiluted and 50 percent diluted blood, according to their practices. Samples were shipped to U.C. Davis and their activities determined Nine of 25 laboratories sent samples; two others performed their own comparisons and submitted data to the California Department of Pesticide Regulation. Best correlations were obtained with BChE activity. Correlations (R2) were 0.88 or above for 4 of 5 laboratories for BChE, and above 0.9 for 2 of 7 laboratories for AChE. Reasons for poor correlations may include difficulties in pipetting RBCs, storage and processing.
New Mexico Agric.. Expt. Sta, - Yellow starthistle is spreading steadily on western rangelands, causing loss of grazing land carrying capacity as well as serious damage to non-grazed land and recreational areas. This noxious weed can be effectively controlled at the seedling stage by foliar application of 0.28 kg a.e. ha-1 picloram. Resistance to picloram in yellow starthistle was observed near Dayton, WA in 1988 and was confirmed in 1990. To determine the inheritance of this resistance, reciprocal F1 crosses between susceptible and resistant plants were performed. Susceptible seeds of yellow starthistle (SCI-1) were collected from wildtype plants growing in Central Grade, ID. Resistant (RDW-1) seeds are second generation progeny of a plant (RDW) resistant to 0.56 kg a.e. ha-1 picloram from Dayton, WA. Progeny of this resistant plant was sprayed with 0.07 to 0.14 kg a.e. ha-1 picloram in the greenhouse and survivors were cross-pollinated to produce RDW-1 seed. Seed from reciprocal F1 crosses was collected and grown under greenhouse conditions until seedlings were five weeks old. Half of the F1 progeny from reciprocal crosses as well as RDW-1 and SCI-1 seedlings were sprayed with picloram at 0.28 kg a.e. ha-1 and half were sprayed with clopyralid at the same rate. All SCI-1 seedlings and F1 progeny died. Crosses to resistant and susceptible testers were then conducted among F1 progeny, SCI-1 and RDW-1 plants. Selfing rates of individuals used in the crosses were less than 0.1% suggesting that all progeny were hybrids. F2 progeny were screened with both herbicides and segregation ratios determined for the number of progeny surviving and dying. Chi square analyses of F1, F2, and testcross segregation data indicate that the resistant phenotype is recessive and conferred by a single gene with the original SCI-1 population being homozygous dominant for susceptibility. Picloram resistance as a recessive trait is consistent with the observations that while under no additional picloram selection pressure, resistance has not spread from where it was first identified and that no other picloram-resistant yellow starthistle populations have been identified.
4. Develop technologies that mitigate adverse human and environmental impacts.
Utah Agric. Expt. Sta. - Laccases are enzyme secreted by various wood-rotting fungi which can oxidize various chemicals using molecular oxygen as the oxidant. The enzymes use copper to oxidize chemicals while reducing molecular oxygen to water. In this research we investigated two fungi that have been reported to secrete laccases to determine conditions in which these are the only oxidative enzymes secreted. The final objective is to determine if fungi that secrete laccases are capable of degrading various pesticides. Trametes versicolor secreted significant amounts of laccase, however some manganese peroxidase activity was observed under all conditions. Pyconoprus cinnabarinus also exhibited significant laccase activity and no other oxidative enzyme except very low levels of cellobiose dehydrogenase, which would not be significant if cellulose was not used as the carbon nutrient. Thus P. cinnabarinus will be used in future studies where the fungus will be grown on glucose to test for the role of laccase in biodegradation.
Impacts
- Oregon - In additon to improving our understanding of potential impacts of pesticides on threatened Pacific salmonids, these findings should provide the basis for an assessment of the need for growers to develop best management practices which minimize pesticide movement into the surface water;;
- UC Davis - Associated with this research, Oregon State University and University of Cal. Davis have collaborated on the refinement of analytical methods for cholinesterase in blood and brain tissues, a biomarker of OP exposure in salmonids;;
- Cornell is developing sampling methods to assess pesticide risks to children in indoor environments and research continues on competitive kinetics to help degrade pesticide residues in wastewater;;
- Work planned for the next year will be a continuation of many of the projects described in section m and new collaborative thrusts described under the objectives of the W-45 project. Additional collaborative efforts include cooperative grants being written, cooperative research projects being initiated, and sharing of research approaches and analytical techniques among institutions. Future Indiana and Georiga, ARS Beltsville and Georgia.
Publications
Oregon
Publications
Runes, H. B., P. J. Bottomley, R. N. Lerch, and J. J. Jenkins. 2001. Atrazine remediation in wetland microcosms. Environ. Toxicol. Chem. Vol. 20 No. 5. pp. 1059-1066.
Peterson, J. L., P. C. Jepson, J. J. Jenkins. 2001. A test system to evaluate the susceptibility of Oregon native stream invertebrates to triclopyr and carbaryl. Environ. Toxicol. Chem. In press.
Peterson, J. L., P. C. Jepson, J. J. Jenkins. 2001. Effect of varying pesticide exposure duration and concentration on the toxicity of carbaryl to two field-collected stream invertebrates, Calineuria californica (Plecoptera: Perlidae) and Cinygma sp. (Ephemeroptera: Heptageniidae). Environ. Toxicol. Chem. In press.
Runes, H. B., J. J. Jenkins, and P. J. Bottomley. Characteristics of atrazine degradation in bioaugmented wetland sediment. Submitted to Soil Biology & Biochemistry.
Articles
Buchwalter, D., D. Judd, J. Jenkins, L. Curtis. 2001. Testing Toxicological Hypotheses Based on Ecological Observations: A Case Study Using Aquatic Insects and Epithelia. In Society of Environmental Toxicology and Chemistry Globe, Vol. 2, No.1, p. 30-31.
Presentations at national meetings
Peterson, J. L., P. C. Jepson, and J. J. Jenkins. 2000. A New Method for Evaluating the Effects of Pesticides on Native Stream Invertebrates. Society of Environmental Toxicology and Chemistry Annual Meeting, Nashville, TN, November 12-16, 2000.
Buchwalter, D. B., J. J. Jenkins, and L. R. Curtis. 2000. The Effects of Water Temperature and Respiratory Strategy on the 3H2O Flux in Aquatic Insects. Society of Environmental Toxicology and Chemistry Annual Meeting, Nashville, TN, November 12-16, 2000.
Runes, H. B., P. J. Bottomley, and J. J. Jenkins. 2000. Enhanced Atrazine Bioremediation in Wetland Sediment Using Organic Amendment and Microbial Inoculation. Agrochemicals Division, 220th Annual Meeting of the American Chemical Society, Washington D. C., August 20-24, 2000.
Reports
Jepson, P., R. Dick, B. Boggess, J. J. Jenkins, and M. Gamroth. 2000. Oregon Agricultural Ecosystems. In: Oregon State of the Environment Report 2000. Oregon Progress Board, Salem OR, 97310.
Jenkins, J. J. 2001. Environmental Monitoring of Azinphos-methyl (Guthion) Dissolved Residues in Hood River Tributaries May 22 - June 30, 2000. Report to the Oregon Department of Environmental Quality.
Extension Publications
Thomson, P., W. Parrott, and J. J. Jenkins.2000. Crop Profile for Alfalfa in Oregon. USDA Office of Pesticide Management Policy and Pesticide Impact Assessment Program. http://pestdata.ncsu.edu/cropprofiles
Thomson, P., W. Parrott, and J. J. Jenkins.2000. Crop Profile for Apples in Oregon. USDA Office of Pesticide Management Policy and Pesticide Impact Assessment Program. http://pestdata.ncsu.edu/cropprofiles
Thomson, P., W. Parrott, and J. J. Jenkins.2000. Crop Profile for Barley in Oregon. USDA Office of Pesticide Management Policy and Pesticide Impact Assessment Program. http://pestdata.ncsu.edu/cropprofiles
Thomson, P., W. Parrott, and J. J. Jenkins.2000. Crop Profile for Blueberries in Oregon. USDA Office of Pesticide Management Policy and Pesticide Impact Assessment Program. http://pestdata.ncsu.edu/cropprofiles
Thomson, P., W. Parrott, and J. J. Jenkins.2000. Crop Profile for Broccoli in Oregon. USDA Office of Pesticide Management Policy and Pesticide Impact Assessment Program. http://pestdata.ncsu.edu/cropprofiles
Thomson, P., W. Parrott, and J. J. Jenkins.2000. Crop Profile for Canola in Oregon. USDA Office of Pesticide Management Policy and Pesticide Impact Assessment Program. http://pestdata.ncsu.edu/cropprofiles
Thomson, P., W. Parrott, and J. J. Jenkins.2000. Crop Profile for Carrots in Oregon. USDA Office of Pesticide Management Policy and Pesticide Impact Assessment Program. http://pestdata.ncsu.edu/cropprofiles
Thomson, P., W. Parrott, and J. J. Jenkins.2000. Crop Profile for Cauliflower in Oregon. USDA Office of Pesticide Management Policy and Pesticide Impact Assessment Program. http://pestdata.ncsu.edu/cropprofiles
Thomson, P., W. Parrott, and J. J. Jenkins.2000. Crop Profile for Corn in Oregon. USDA Office of Pesticide Management Policy and Pesticide Impact Assessment Program. http://pestdata.ncsu.edu/cropprofiles
Thomson, P., W. Parrott, and J.J. Jenkins.2000. Crop Profile for Cucumbers in Oregon. USDA Office of Pesticide Management Policy and Pesticide Impact Assessment Program. http://pestdata.ncsu.edu/cropprofiles
Thomson, P., W. Parrott, and J. J. Jenkins.2000. Crop Profile for Hops in Oregon. USDA Office of Pesticide Management Policy and Pesticide Impact Assessment Program. http://pestdata.ncsu.edu/cropprofiles
Thomson, P., W. Parrott, and J. J. Jenkins.2000. Crop Profile for Onions in Oregon. USDA Office of Pesticide Management Policy and Pesticide Impact Assessment Program. http://pestdata.ncsu.edu/cropprofiles
Thomson, P., W. Parrott, and J. J. Jenkins.2000. Crop Profile for Pears in Oregon. USDA Office of Pesticide Management Policy and Pesticide Impact Assessment Program. http://pestdata.ncsu.edu/cropprofiles
Thomson, P., W. Parrott, and J. J. Jenkins.2000. Crop Profile for Peas in Oregon. USDA Office of Pesticide Management Policy and Pesticide Impact Assessment Program. http://pestdata.ncsu.edu/cropprofiles
Thomson, P., W. Parrott, and J. J. Jenkins.2000. Crop Profile for Plums and Prunes in Oregon. USDA Office of Pesticide Management Policy and Pesticide Impact Assessment Program. http://pestdata.ncsu.edu/cropprofiles
Jenkins, J. J. and E. P. Foster. 2001. Hood River Watershed: Water Quality & Pesticides Fact Sheet. Oregon State University Extension Service and Oregon Department of Environmental Quality.
Georgia
Armbrust KL. 2001. Chlorothalonil and chlorpyrifos degradation products in golf course leachate. Pest Management Science In Press
Armbrust, K.L. 2001. Photodegradation of Hydroxychlorothalonil in Aqueous Solution. Environmental Toxicology and Chemistry (Accepted).
Armbrust KL. 2000. Pesticide hydroxyl radical rate constants: Measurements and estimates of their importance in aquatic environments. Environ Toxicol and Chem 19:110-117.
Abstracts
Armbrust, K.L. (2001) The Fate of Turf Pesticides in Aquatic Ecosystems. American Chemical Society Annual Meeting. Division of Agrochemicals. San Diego, CA. April 1-5, 2001.
Armbrust, K.L. (2000). Photodegradation of Hydroxychlorothalonil in Aqueous Solution. American Chemical Society Annual Meeting, Division of Agrochemicals. San Francisco, CA. March 26-30, 2000.
Armbrust, K.L. (1999). The Occurrence of Chlorothalonil and Chlorpyrifos Degradation Products in Leachate from Golf Course Greens. Society of Environmental Toxicology and Chemistry. Philadelphia, PA. November 14-18, 1999
USDA-ARS, Beltsville
Jayasundera, S., Schmidt, W. F., Hapeman, C.J., and Torrents, A. Rebuttal on Influence of the Chemical Environment on Metolachlor Conformation. J. Agr. Food Chem. 48(11): 4450-4451, 2000.
Jayasundera, S., Schmidt, W. F., Hapeman, C.J., and Torrents, A. What’s Known and What’s Yet to be Known with Respect to the Sorption of Organic Pollutants onto Soils. Rev. Int. Contam. Ambient. 16(4), 147-156
Rice, P.J., McConnell, L.L., Heighton ,L.P., Sadeghi, A.M., Isensee, A.R., Abdul-Baki, A.A. and Hapeman, C.J. Off-site movement of agrochemicals and soil in runoff from fresh-market vegetable production: comparing the environmental impact of polyethylene mulch versus vegetative mulch. J. Environ. Qual. (in press)
Pierpoint, A.C., Hapeman, C.J. and Torrents, A. A Linear Free Energy Study of Ring-Substituted Aniline Ozonation for Developing Treatment of Aniline-Based Pesticide Wastes. J. Agric. Food Chem. (in press)
Rice, P.J., McConnell, L.L., Heighton ,L.P., Sadeghi, A.M., Isensee, A.R., Abdul-Baki, A.A., Harman-Fetcho, J., Hapeman, C.J. Transport of Copper in Runoff from Fresh-Market Vegetable Production Using Polyethylene Mulch or a Vegetative Mulch. Environ. Toxicol. Chem. (in review)
Schmidt, W.F., Bilboulian, S., Rice, C.P., Fettinger, J.C., McConnell, L.L. and Hapeman, C.J. Thermodynamic, Spectroscopic and Computational Evidence for the Irreversible Conversion of β- to α -Endosulfan. J. Ag. Food Chem. (in review)
Extension Activities:
Off-Site Movement of Pesticides and Soil in Runoff from Vegetable Production. Mid-Atlantic Certified Crop Advisors Crop School, Ocean City, MD, November 2000.
Abstracts
Heighton, L.P., Hapeman, C.J, Starr, J.L., Rice, P.J., Teasdale, T.S., McConnell, L.L., Harman-Fetcho, J.A., Isensee, A.R., Sadeghi, A.M. Mitigating the Effects of Vegetable Production on Surrounding Ecosystems. The 2000 Annual Meeting Abstracts of the American Society of Agronomy, Crop Science Society of America and Soil Science Society of America, Minneapolis, MN.
Cornell
Q. Wang and A.T. Lemley. Kinetic model and optimization of 2,4-D degradation by anodic Fenton treatment. Environmental Science and Technology (submitted).
A. Hedge, J. Kim, A. Lemley, S. Hong, S. K. Obendorf ,, T. Muss, and C. Varner, Pesticides in house dust in rural homes in central New York, Archives of Environmental Contamination and Toxicology (submitted).
D.A. Saltmiras and A.T. Lemley. Anodic Fenton treatment of treflan MTF.. J. Environ. Sci. Health A36(3): 261-274 (2001).
S. Hong, J. Kim, A.T. Lemley, S.K.Obendorf, and A.Hedge. Analytical method development for 18 pesticides in house dust and settled residues using size exclusion chromatography, solid phase extraction, trimethylsilyldiazomehtane methylation and gas chromatography coupled with mass spectrometry. J. Chromatograph. Sci 39(3):101-112 (2001).
D.A Saltmiras and A.T. Lemley. Degradation of ethylene thiourea (ETU) with three Fenton treatment processes. J. Ag and Food Chem. 48:6149-6157 (2000).
Florida
Ogram, A.V., Y.-P. Duan, S.L. Trabue, X. Feng, H. Castro, and L.-T. Ou. 2000. Carbofuran degradation mediated by three related plasmid systems. FEMS Microbiol Ecol. 32:197 - 203.
Ou, L.-T. 2000. Pesticide biodegradation, p. 594 - 606. In J. Lederberg (ed.), Encylopedia of Microbiology, 2nd ed., vol. 3. Academic Press, San Diego.
Ou, L.-T., J.E. Thomas, K.-Y. Chung, and A.V. Ogram. 2001. Degradation of 1,3-dichloropropene by a mixed bacterial consortium and Rhodococcus sp. AS2C isolated from the consortium. Biodegradation (in press).
Trabue, S.L., A.V. Ogram, and L.-T. Ou. 2001. Dynamics of carbofuran-degrading microbial communities in soil during three successive annual applications of carbofuran. Soil Biol Biochem. 33:75 - 81.
USDA-ARS, Riverside, CA
Peer-reviewed
Yates, S. R., D. Wang, S. K. Papiernik, and J. Gan. 2000. Controlling agricultural emissions of methyl bromide. IGACtivities. 19:16-17, 21.
Liu, W., J. Gan, S. K. Papiernik, and S. R. Yates. 2000. Sorption and catalytic hydrolysis of diethatyl-ethyl on homoionic clays. J. Agric. Food Chem. 48:1935-1940.
Papiernik, S. K., J. Gan, and S. R. Yates. 2000. Mechanism of degradation of methyl bromide and propargyl bromide in soil. J. Environ. Qual. 29:1322-1328.
Yates, S. R., S. K. Papiernik, F. Gao, and J. Gan. 2000. Analytical solutions for the transport of volatile organic chemicals in unsaturated layered systems. Water Resources Research 36:1993-2000.
Papiernik, S. K., J. Gan, and S. R. Yates. 2000. Transport of organic compounds. In J. H. Dane and G. C. Topp (eds.), Methods of Soil Analysis, Part 1, Physical Methods. 3rd ed. Soil Science Society of America, Madison, WI. Accepted April, 2000. (Book chapter)
Liu, W., J. Gan, S. K. Papiernik, and S. R. Yates. 2000. Structural influences in relative sorptivity of chloroacetanilide herbicides on soil. J. Agric. Food Chem. 48:4320-4325.
Wang, Q., J. Gan, S. K. Papiernik, and S. R. Yates. 2000. Transformation and detoxification of halogenated fumigants by ammonium thiosulfate. Environ. Sci. Technol. 34:3717-3721.
Yates, S.R., J. Gan, S. K. Papiernik, and D. Wang. 2000.Reducing fumigant emissions after soil injection. Phytopathology 90:S103.
Abstracts
Wang, Q., J. Gan, S. K. Papiernik, and S. R. Yates. Transformation and detoxification of soil fumigants by ammonium thiosulfate. Preprints of Extended Abstracts, American Chemical Society Division of Environmental Chemistry. 40(1):31-33. 2000.
Papiernik, S. K. In situ measurements of pesticide degradation in groundwater. Abstracts, Third Society of Environmental Toxicology and Chemistry World Congress. p. 40. 2000.
Papiernik, S. K., J. Gan, R. Dungan, and S. R. Yates. Products of propargyl bromide degradation in soil. Proceedings of the 2000 Annual International Research Conference on Methyl Bromide Alternatives and Emissions Reductions. 27:1-3. 2000.
Dungan, R. S., Q. Ma, J. Gan, S. K. Papiernik, and S. R. Yates. Propargyl bromide: Preliminary efficacy and environmental results. Proceedings of the 2000 Annual International Research Conference on Methyl Bromide Alternatives and Emissions Reductions 29:1-3. 2000.
Ma, Q. L., J. O. Becker, J. Gan, R. Dungan, S. K. Papiernik, and S. R. Yates. Temperature-enhanced efficacy of MITC for soil-borne pest control. Proceedings of the 2000 Annual International Research Conference on Methyl Bromide Alternatives and Emissions Reductions. 99:1-3. 2000.
Papiernik, S. K., C. M. Grieve, J. Gan, F. F. Ernst, and S. R. Yates. Herbicide-salinity interaction effects on phytotoxicity. Agronomy Abstracts. p. 142. 2000.
Ibekwe, A. M., S. K. Papiernik, J. Gan, and S. R. Yates. Impact of fumigants on structural diversity of ammonium-oxidizing bacteria. Agronomy Abstracts. p. 256. 2000.
Ma, Q. L., J. Gan, S. K. Papiernik, J. O. Becker, and S. R. Yates. Concentration- and temperature-dependent degradation of two fumigants in a sandy soil. Agronomy Abstracts. p. 312. 2000.
Ma, Q. L., J. Gan, J. O. Becker, S. K. Papiernik, and S. R. Yates. Dose-response relationships between methyl isothiocyanate and barnyardgrass seeds in a soil at different temperatures. Agronomy Abstracts. p. 319. 2000.
Cornell
Peer-Reviewed
Snedeker, S.M.: Pesticides and breast cancer risk: A review of DDT, DDE, and dieldrin. Envir. Health Perspect. 109(suppl 1):35-47, 2001
Extension
Snedeker, S.M.: Pesticides and Breast Cancer Risk, An Evaluation of DDT and DDE, published by the Program on Breast Cancer and Environmental Risk Factors in New York State, Cornell University, Ithaca, NY, 6 pp., April, 2001 (available on-line, http://www.cfe.cornell.edu/bcerf/)
California Ag. Expt. Sta., Davis
Wilson BW, Henderson JD, Coatney EM and Spencer PS. Actions of Pyridostigmine and Organophosphate Agents on Chick Embryo Cells, Chickens and Mice Submitted
Oliveira GH, Henderson JD and Wilson BW Cholinesterase Measurements with an Automated Kit, Submitted.
Wilson, B. W. , Henderson J.D., Ramirez A. R and O’Malley R.A. Standardization of clinical cholinesterase measurements. Submitted
Wilson, B. W. 2001. Acetylcholinesterases. In Handbook of Pesticide Toxicology (2nd Ed.), ed. R.E. Krieger. New York: Academic Press. In Press.
Harmon AD, Wilson BW, Henderson JD and Frumkin H 2000 Cholinesterase levels among agricultural pilot and mixer/loaders. J.Agromedicine 7:57-67.
Bakshi, Kulbir; Pang, Susan N. J.; Snyder, Robert; Abou-Donia, Mohamed B.; Albuquerque, Edson X.; Daniels, Jeffrey I.; Gardner, Donald E.; Gaylor, David W.; Henderson, Rogene F.; James, John T.; Leffingwell, Sanford S.; Saady, Joseph J.; Spencer, Peter S.; Wagner, Bernard M.; Wilson, Barry W. 2000. Review of the U.S. Army‘s health risk assessments for oral exposure to six chemical-warfare agents. J. Toxicol. Environ. Health, Part A, 59(5-6): 281-526.
Spencer PS, Albuquerque FX and Wilson BW 2000 “Sarin, other nerve agents and their antidotes” in Experimental and Clinical Neurotoxicology, 2nd Edition by Spencer PS and Schaumburg H., Oxford University Press. pp1073-1093.
Millam JR, Delwiche MJ, Craig-Veit CB , Henderson JD and Wilson BW 2000 Noninvasive characterization of the effects of diazinon on pigeons. Bull. Environ. Contam. Toxicol. 64:534-541.
Kellner, Thomas; Sanborn, James; Wilson, Barry. 2000 In vitro and in vivo assessment of the effect of impurities and chirality on methamidophos-induced neuropathy target esterase aging. Toxicol. Sci. 54: 408-415.
Utah Ag. Expt. Stat.
Cameron, M.D., Z.D. Post, J.D. Stahl, J. Haselbach, and S.D. Aust (2000) “Cellobiose dehydrogenase-dependent biodegradation of polyacrylate polymers by Phanerochaete chrysosporium”, Environ. Sci. Pollut. Res. 7, 130-134.
Stahl, J.D., B. Van Aken, M.D. Cameron, and S.D. Aust (2001) “Hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) biodegradation in liquid and solid-state matrices by Phanerochaete chrysosporium”, Bioremediation Journal 5, 13-25.
Van Aken, B., J.D. Stahl, H. Naveau, S.N. Agathos, and S.D. Aust (2000) “Transformation of 2,4,6-trinitrotoluene (TNT) reduction products by lignin peroxidase (H8) from the white-rot basidiomycete Phanerochaete chrysosporium”, Bioremediation Journal 4, 135-145.
Reading, N.S., and S.D. Aust (2000) “Engineering a disulfide bond in recombinant manganese peroxidase results in increased thermostability”, Biotech. Prog. 16, 326-333.
Cameron, M.D., and S.D. Aust (2001) “Proteolysis of cellobiose dehydrogenase alleviates inhibition of peroxidases from Phanerochaete chrysosporium: a proposed rational for the formation of cellobiose:quinone oxidoreductase”, Arch. Biochem. Biophys. (Submitted).
Van Eden, M.E., and S.D. Aust (2001) “Ceruloplasmin” in The Encyclopedia of Molecular Medicine. Wiley. (In press).
Van Eden, M.E., and S.D. Aust (2001) “Ferritin” in The Encyclopedia of Molecular Medicine. Wiley. (In press).
Van Eden, M.E., and S.D. Aust (2001) “Ferroxidases” in The Encyclopedia of Molecular Medicine. Wiley. (In press).
Van Eden, M.E., and S.D. Aust (2000) “Intact human ceruloplasmin is required for the incorporation of iron into human ferritin”, Arch. Biochem. Biophys. 381, 119-126.
Cameron, M.D., S. Timofeevski, and S.D. Aust (2000) “Enzymology of Phanerochaete chrysosporium with respect to the degradation of recalcitrant compounds and xenobiotics”, Appl. Microbiol. Biotechnol. 54, 751-758.
Cameron, M.D., and S.D. Aust (2001) “Cellobiose dehydrogenase - An extracellular fungal flavocytochrome”, Enzyme Microbial Technol. 28, 129-138.
Cameron, M.D., and S.D. Aust (2000) “Kinetics and reactivity of the flavin and heme cofactors of cellobiose dehydrogenase from Phanerochaete chrysosporium”, Biochemistry 39, 13595-13601.
Welch, K.D., and S.D. Aust (2000) “The role of iron in lipid peroxidation”. In: Recent research developments in lipid research. Transworld Research Network 4, 161-179.
Reading, N.S., M.D. Cameron and S.D. Aust (2000) Fungi - For Biotechnology. In: Encyclopedia of Environmental Microbiology. John Wiley & Sons, New York. (In press).
Grace, Jr., J.E., M.E. Van Eden and S.D. Aust (2000) “Production of recombinant human apoferritin heteromers”, Arch. Biochem. Biophys. 384, 116-122.
Van Aken, B., M.D. Cameron, J.D. Stahl, A. Plumat, H. Naveau, S.D. Aust, and S.N. Agathos (2000) “Glutathione-mediated mineralization of 14C-labeled 2-amino-4,6-dinitrotoluene by manganese-dependent peroxidase H5 from the white-rot fungus Phanerochaete chrysosporium”, Appl. Microbiol. Biotechnol. 54, 659-664.
Reading, N.S., and S.D. Aust (2001) “Role of disulfide bonds in the stability of recombinant manganese peroxidase”, Biochemistry (Submitted).
Welch, K.D., M.E. Van Eden, and S.D. Aust (2001) “Modification of ferritin during iron loading”, Free. Rad. Biol. Med. (Submitted).
Van Eden, M.E., and S.D. Aust (2001) “The consequences of hydroxyl radical formation to the stoichiometry and kinetics of ferrous iron oxidation by human apoferritin”, Free Rad. Biol. Med. (Submitted).
Van Eden, M.E., K.D. Welch, J.E. Grace, and S.D. Aust (2001) “Human and rat ferritin isoforms”, Free Rad. Biol. Med. (Submitted).
New Mexico
Refereed
Sterling, T. M., N. K. Lownds and L. W. Murray 2001. Similar competitive ability between Centaurea solstitialis accessions resistant or susceptible to picloram. Weed Sci. 49:42-47.
Sterling, T. M., L. W. Murray and Y. Hou. 2000. Morphological variation among broom snakeweed (Gutierrezia sarothrae) populations. Weed Sci. 48:356-365.
Abstracts
Hernandez-Rios, I. and T. M. Sterling. 2001. Antioxidant response in prometryn-tolerant and -susceptible cotton varieties. Proc. Western Soc. Weed Sci. 54:xx.
Molin, W. T., H. H. Ratnayaka, and T. M. Sterling. 2001. Spurred anoda competition in wide row and ultra narrow row cotton. Proc. Western Soc. Weed Sci. 54:xx.
Ratnayaka, H., W. T. Molin and T. M. Sterling. 2001. Interaction between competition and oxidative stress tolerance in cotton and spurred anoda. Proc. Western Soc. Weed Sci. 54:xx.
Vallotton, A. D., R. P. Sabba, I. Ray and T. M. Sterling. 2001. Inheritance of picloram resistance in yellow starthistle. Proc. Western Soc. Weed Sci. 54:xx.
Hernandez-Rios, I. and T. M. Sterling. 2000. Lipid peroxidation as an index of prometryn damage in cotton. Proc. Western Soc. Weed Sci. 53:100.
Kulshreshtha, S. and T. M. Sterling. 2000. Variation in amplified chloroplast genes from different locoweed varieties in New Mexico. Proc. Western Soc. Weed Sci. 53:15.
Publications
Runes, H. B., P. J. Bottomley, R. N. Lerch, and J. J. Jenkins. 2001. Atrazine remediation in wetland microcosms. Environ. Toxicol. Chem. Vol. 20 No. 5. pp. 1059-1066.
Peterson, J. L., P. C. Jepson, J. J. Jenkins. 2001. A test system to evaluate the susceptibility of Oregon native stream invertebrates to triclopyr and carbaryl. Environ. Toxicol. Chem. In press.
Peterson, J. L., P. C. Jepson, J. J. Jenkins. 2001. Effect of varying pesticide exposure duration and concentration on the toxicity of carbaryl to two field-collected stream invertebrates, Calineuria californica (Plecoptera: Perlidae) and Cinygma sp. (Ephemeroptera: Heptageniidae). Environ. Toxicol. Chem. In press.
Runes, H. B., J. J. Jenkins, and P. J. Bottomley. Characteristics of atrazine degradation in bioaugmented wetland sediment. Submitted to Soil Biology & Biochemistry.
Articles
Buchwalter, D., D. Judd, J. Jenkins, L. Curtis. 2001. Testing Toxicological Hypotheses Based on Ecological Observations: A Case Study Using Aquatic Insects and Epithelia. In Society of Environmental Toxicology and Chemistry Globe, Vol. 2, No.1, p. 30-31.
Presentations at national meetings
Peterson, J. L., P. C. Jepson, and J. J. Jenkins. 2000. A New Method for Evaluating the Effects of Pesticides on Native Stream Invertebrates. Society of Environmental Toxicology and Chemistry Annual Meeting, Nashville, TN, November 12-16, 2000.
Buchwalter, D. B., J. J. Jenkins, and L. R. Curtis. 2000. The Effects of Water Temperature and Respiratory Strategy on the 3H2O Flux in Aquatic Insects. Society of Environmental Toxicology and Chemistry Annual Meeting, Nashville, TN, November 12-16, 2000.
Runes, H. B., P. J. Bottomley, and J. J. Jenkins. 2000. Enhanced Atrazine Bioremediation in Wetland Sediment Using Organic Amendment and Microbial Inoculation. Agrochemicals Division, 220th Annual Meeting of the American Chemical Society, Washington D. C., August 20-24, 2000.
Reports
Jepson, P., R. Dick, B. Boggess, J. J. Jenkins, and M. Gamroth. 2000. Oregon Agricultural Ecosystems. In: Oregon State of the Environment Report 2000. Oregon Progress Board, Salem OR, 97310.
Jenkins, J. J. 2001. Environmental Monitoring of Azinphos-methyl (Guthion) Dissolved Residues in Hood River Tributaries May 22 - June 30, 2000. Report to the Oregon Department of Environmental Quality.
Extension Publications
Thomson, P., W. Parrott, and J. J. Jenkins.2000. Crop Profile for Alfalfa in Oregon. USDA Office of Pesticide Management Policy and Pesticide Impact Assessment Program. http://pestdata.ncsu.edu/cropprofiles
Thomson, P., W. Parrott, and J. J. Jenkins.2000. Crop Profile for Apples in Oregon. USDA Office of Pesticide Management Policy and Pesticide Impact Assessment Program. http://pestdata.ncsu.edu/cropprofiles
Thomson, P., W. Parrott, and J. J. Jenkins.2000. Crop Profile for Barley in Oregon. USDA Office of Pesticide Management Policy and Pesticide Impact Assessment Program. http://pestdata.ncsu.edu/cropprofiles
Thomson, P., W. Parrott, and J. J. Jenkins.2000. Crop Profile for Blueberries in Oregon. USDA Office of Pesticide Management Policy and Pesticide Impact Assessment Program. http://pestdata.ncsu.edu/cropprofiles
Thomson, P., W. Parrott, and J. J. Jenkins.2000. Crop Profile for Broccoli in Oregon. USDA Office of Pesticide Management Policy and Pesticide Impact Assessment Program. http://pestdata.ncsu.edu/cropprofiles
Thomson, P., W. Parrott, and J. J. Jenkins.2000. Crop Profile for Canola in Oregon. USDA Office of Pesticide Management Policy and Pesticide Impact Assessment Program. http://pestdata.ncsu.edu/cropprofiles
Thomson, P., W. Parrott, and J. J. Jenkins.2000. Crop Profile for Carrots in Oregon. USDA Office of Pesticide Management Policy and Pesticide Impact Assessment Program. http://pestdata.ncsu.edu/cropprofiles
Thomson, P., W. Parrott, and J. J. Jenkins.2000. Crop Profile for Cauliflower in Oregon. USDA Office of Pesticide Management Policy and Pesticide Impact Assessment Program. http://pestdata.ncsu.edu/cropprofiles
Thomson, P., W. Parrott, and J. J. Jenkins.2000. Crop Profile for Corn in Oregon. USDA Office of Pesticide Management Policy and Pesticide Impact Assessment Program. http://pestdata.ncsu.edu/cropprofiles
Thomson, P., W. Parrott, and J.J. Jenkins.2000. Crop Profile for Cucumbers in Oregon. USDA Office of Pesticide Management Policy and Pesticide Impact Assessment Program. http://pestdata.ncsu.edu/cropprofiles
Thomson, P., W. Parrott, and J. J. Jenkins.2000. Crop Profile for Hops in Oregon. USDA Office of Pesticide Management Policy and Pesticide Impact Assessment Program. http://pestdata.ncsu.edu/cropprofiles
Thomson, P., W. Parrott, and J. J. Jenkins.2000. Crop Profile for Onions in Oregon. USDA Office of Pesticide Management Policy and Pesticide Impact Assessment Program. http://pestdata.ncsu.edu/cropprofiles
Thomson, P., W. Parrott, and J. J. Jenkins.2000. Crop Profile for Pears in Oregon. USDA Office of Pesticide Management Policy and Pesticide Impact Assessment Program. http://pestdata.ncsu.edu/cropprofiles
Thomson, P., W. Parrott, and J. J. Jenkins.2000. Crop Profile for Peas in Oregon. USDA Office of Pesticide Management Policy and Pesticide Impact Assessment Program. http://pestdata.ncsu.edu/cropprofiles
Thomson, P., W. Parrott, and J. J. Jenkins.2000. Crop Profile for Plums and Prunes in Oregon. USDA Office of Pesticide Management Policy and Pesticide Impact Assessment Program. http://pestdata.ncsu.edu/cropprofiles
Jenkins, J. J. and E. P. Foster. 2001. Hood River Watershed: Water Quality & Pesticides Fact Sheet. Oregon State University Extension Service and Oregon Department of Environmental Quality.
Georgia
Armbrust KL. 2001. Chlorothalonil and chlorpyrifos degradation products in golf course leachate. Pest Management Science In Press
Armbrust, K.L. 2001. Photodegradation of Hydroxychlorothalonil in Aqueous Solution. Environmental Toxicology and Chemistry (Accepted).
Armbrust KL. 2000. Pesticide hydroxyl radical rate constants: Measurements and estimates of their importance in aquatic environments. Environ Toxicol and Chem 19:110-117.
Abstracts
Armbrust, K.L. (2001) The Fate of Turf Pesticides in Aquatic Ecosystems. American Chemical Society Annual Meeting. Division of Agrochemicals. San Diego, CA. April 1-5, 2001.
Armbrust, K.L. (2000). Photodegradation of Hydroxychlorothalonil in Aqueous Solution. American Chemical Society Annual Meeting, Division of Agrochemicals. San Francisco, CA. March 26-30, 2000.
Armbrust, K.L. (1999). The Occurrence of Chlorothalonil and Chlorpyrifos Degradation Products in Leachate from Golf Course Greens. Society of Environmental Toxicology and Chemistry. Philadelphia, PA. November 14-18, 1999
USDA-ARS, Beltsville
Jayasundera, S., Schmidt, W. F., Hapeman, C.J., and Torrents, A. Rebuttal on Influence of the Chemical Environment on Metolachlor Conformation. J. Agr. Food Chem. 48(11): 4450-4451, 2000.
Jayasundera, S., Schmidt, W. F., Hapeman, C.J., and Torrents, A. What’s Known and What’s Yet to be Known with Respect to the Sorption of Organic Pollutants onto Soils. Rev. Int. Contam. Ambient. 16(4), 147-156
Rice, P.J., McConnell, L.L., Heighton ,L.P., Sadeghi, A.M., Isensee, A.R., Abdul-Baki, A.A. and Hapeman, C.J. Off-site movement of agrochemicals and soil in runoff from fresh-market vegetable production: comparing the environmental impact of polyethylene mulch versus vegetative mulch. J. Environ. Qual. (in press)
Pierpoint, A.C., Hapeman, C.J. and Torrents, A. A Linear Free Energy Study of Ring-Substituted Aniline Ozonation for Developing Treatment of Aniline-Based Pesticide Wastes. J. Agric. Food Chem. (in press)
Rice, P.J., McConnell, L.L., Heighton ,L.P., Sadeghi, A.M., Isensee, A.R., Abdul-Baki, A.A., Harman-Fetcho, J., Hapeman, C.J. Transport of Copper in Runoff from Fresh-Market Vegetable Production Using Polyethylene Mulch or a Vegetative Mulch. Environ. Toxicol. Chem. (in review)
Schmidt, W.F., Bilboulian, S., Rice, C.P., Fettinger, J.C., McConnell, L.L. and Hapeman, C.J. Thermodynamic, Spectroscopic and Computational Evidence for the Irreversible Conversion of β- to α -Endosulfan. J. Ag. Food Chem. (in review)
Extension Activities:
Off-Site Movement of Pesticides and Soil in Runoff from Vegetable Production. Mid-Atlantic Certified Crop Advisors Crop School, Ocean City, MD, November 2000.
Abstracts
Heighton, L.P., Hapeman, C.J, Starr, J.L., Rice, P.J., Teasdale, T.S., McConnell, L.L., Harman-Fetcho, J.A., Isensee, A.R., Sadeghi, A.M. Mitigating the Effects of Vegetable Production on Surrounding Ecosystems. The 2000 Annual Meeting Abstracts of the American Society of Agronomy, Crop Science Society of America and Soil Science Society of America, Minneapolis, MN.
Cornell
Q. Wang and A.T. Lemley. Kinetic model and optimization of 2,4-D degradation by anodic Fenton treatment. Environmental Science and Technology (submitted).
A. Hedge, J. Kim, A. Lemley, S. Hong, S. K. Obendorf ,, T. Muss, and C. Varner, Pesticides in house dust in rural homes in central New York, Archives of Environmental Contamination and Toxicology (submitted).
D.A. Saltmiras and A.T. Lemley. Anodic Fenton treatment of treflan MTF.. J. Environ. Sci. Health A36(3): 261-274 (2001).
S. Hong, J. Kim, A.T. Lemley, S.K.Obendorf, and A.Hedge. Analytical method development for 18 pesticides in house dust and settled residues using size exclusion chromatography, solid phase extraction, trimethylsilyldiazomehtane methylation and gas chromatography coupled with mass spectrometry. J. Chromatograph. Sci 39(3):101-112 (2001).
D.A Saltmiras and A.T. Lemley. Degradation of ethylene thiourea (ETU) with three Fenton treatment processes. J. Ag and Food Chem. 48:6149-6157 (2000).
Florida
Ogram, A.V., Y.-P. Duan, S.L. Trabue, X. Feng, H. Castro, and L.-T. Ou. 2000. Carbofuran degradation mediated by three related plasmid systems. FEMS Microbiol Ecol. 32:197 - 203.
Ou, L.-T. 2000. Pesticide biodegradation, p. 594 - 606. In J. Lederberg (ed.), Encylopedia of Microbiology, 2nd ed., vol. 3. Academic Press, San Diego.
Ou, L.-T., J.E. Thomas, K.-Y. Chung, and A.V. Ogram. 2001. Degradation of 1,3-dichloropropene by a mixed bacterial consortium and Rhodococcus sp. AS2C isolated from the consortium. Biodegradation (in press).
Trabue, S.L., A.V. Ogram, and L.-T. Ou. 2001. Dynamics of carbofuran-degrading microbial communities in soil during three successive annual applications of carbofuran. Soil Biol Biochem. 33:75 - 81.
USDA-ARS, Riverside, CA
Peer-reviewed
Yates, S. R., D. Wang, S. K. Papiernik, and J. Gan. 2000. Controlling agricultural emissions of methyl bromide. IGACtivities. 19:16-17, 21.
Liu, W., J. Gan, S. K. Papiernik, and S. R. Yates. 2000. Sorption and catalytic hydrolysis of diethatyl-ethyl on homoionic clays. J. Agric. Food Chem. 48:1935-1940.
Papiernik, S. K., J. Gan, and S. R. Yates. 2000. Mechanism of degradation of methyl bromide and propargyl bromide in soil. J. Environ. Qual. 29:1322-1328.
Yates, S. R., S. K. Papiernik, F. Gao, and J. Gan. 2000. Analytical solutions for the transport of volatile organic chemicals in unsaturated layered systems. Water Resources Research 36:1993-2000.
Papiernik, S. K., J. Gan, and S. R. Yates. 2000. Transport of organic compounds. In J. H. Dane and G. C. Topp (eds.), Methods of Soil Analysis, Part 1, Physical Methods. 3rd ed. Soil Science Society of America, Madison, WI. Accepted April, 2000. (Book chapter)
Liu, W., J. Gan, S. K. Papiernik, and S. R. Yates. 2000. Structural influences in relative sorptivity of chloroacetanilide herbicides on soil. J. Agric. Food Chem. 48:4320-4325.
Wang, Q., J. Gan, S. K. Papiernik, and S. R. Yates. 2000. Transformation and detoxification of halogenated fumigants by ammonium thiosulfate. Environ. Sci. Technol. 34:3717-3721.
Yates, S.R., J. Gan, S. K. Papiernik, and D. Wang. 2000.Reducing fumigant emissions after soil injection. Phytopathology 90:S103.
Abstracts
Wang, Q., J. Gan, S. K. Papiernik, and S. R. Yates. Transformation and detoxification of soil fumigants by ammonium thiosulfate. Preprints of Extended Abstracts, American Chemical Society Division of Environmental Chemistry. 40(1):31-33. 2000.
Papiernik, S. K. In situ measurements of pesticide degradation in groundwater. Abstracts, Third Society of Environmental Toxicology and Chemistry World Congress. p. 40. 2000.
Papiernik, S. K., J. Gan, R. Dungan, and S. R. Yates. Products of propargyl bromide degradation in soil. Proceedings of the 2000 Annual International Research Conference on Methyl Bromide Alternatives and Emissions Reductions. 27:1-3. 2000.
Dungan, R. S., Q. Ma, J. Gan, S. K. Papiernik, and S. R. Yates. Propargyl bromide: Preliminary efficacy and environmental results. Proceedings of the 2000 Annual International Research Conference on Methyl Bromide Alternatives and Emissions Reductions 29:1-3. 2000.
Ma, Q. L., J. O. Becker, J. Gan, R. Dungan, S. K. Papiernik, and S. R. Yates. Temperature-enhanced efficacy of MITC for soil-borne pest control. Proceedings of the 2000 Annual International Research Conference on Methyl Bromide Alternatives and Emissions Reductions. 99:1-3. 2000.
Papiernik, S. K., C. M. Grieve, J. Gan, F. F. Ernst, and S. R. Yates. Herbicide-salinity interaction effects on phytotoxicity. Agronomy Abstracts. p. 142. 2000.
Ibekwe, A. M., S. K. Papiernik, J. Gan, and S. R. Yates. Impact of fumigants on structural diversity of ammonium-oxidizing bacteria. Agronomy Abstracts. p. 256. 2000.
Ma, Q. L., J. Gan, S. K. Papiernik, J. O. Becker, and S. R. Yates. Concentration- and temperature-dependent degradation of two fumigants in a sandy soil. Agronomy Abstracts. p. 312. 2000.
Ma, Q. L., J. Gan, J. O. Becker, S. K. Papiernik, and S. R. Yates. Dose-response relationships between methyl isothiocyanate and barnyardgrass seeds in a soil at different temperatures. Agronomy Abstracts. p. 319. 2000.
Cornell
Peer-Reviewed
Snedeker, S.M.: Pesticides and breast cancer risk: A review of DDT, DDE, and dieldrin. Envir. Health Perspect. 109(suppl 1):35-47, 2001
Extension
Snedeker, S.M.: Pesticides and Breast Cancer Risk, An Evaluation of DDT and DDE, published by the Program on Breast Cancer and Environmental Risk Factors in New York State, Cornell University, Ithaca, NY, 6 pp., April, 2001 (available on-line, http://www.cfe.cornell.edu/bcerf/)
California Ag. Expt. Sta., Davis
Wilson BW, Henderson JD, Coatney EM and Spencer PS. Actions of Pyridostigmine and Organophosphate Agents on Chick Embryo Cells, Chickens and Mice Submitted
Oliveira GH, Henderson JD and Wilson BW Cholinesterase Measurements with an Automated Kit, Submitted.
Wilson, B. W. , Henderson J.D., Ramirez A. R and O’Malley R.A. Standardization of clinical cholinesterase measurements. Submitted
Wilson, B. W. 2001. Acetylcholinesterases. In Handbook of Pesticide Toxicology (2nd Ed.), ed. R.E. Krieger. New York: Academic Press. In Press.
Harmon AD, Wilson BW, Henderson JD and Frumkin H 2000 Cholinesterase levels among agricultural pilot and mixer/loaders. J.Agromedicine 7:57-67.
Bakshi, Kulbir; Pang, Susan N. J.; Snyder, Robert; Abou-Donia, Mohamed B.; Albuquerque, Edson X.; Daniels, Jeffrey I.; Gardner, Donald E.; Gaylor, David W.; Henderson, Rogene F.; James, John T.; Leffingwell, Sanford S.; Saady, Joseph J.; Spencer, Peter S.; Wagner, Bernard M.; Wilson, Barry W. 2000. Review of the U.S. Army‘s health risk assessments for oral exposure to six chemical-warfare agents. J. Toxicol. Environ. Health, Part A, 59(5-6): 281-526.
Spencer PS, Albuquerque FX and Wilson BW 2000 “Sarin, other nerve agents and their antidotes” in Experimental and Clinical Neurotoxicology, 2nd Edition by Spencer PS and Schaumburg H., Oxford University Press. pp1073-1093.
Millam JR, Delwiche MJ, Craig-Veit CB , Henderson JD and Wilson BW 2000 Noninvasive characterization of the effects of diazinon on pigeons. Bull. Environ. Contam. Toxicol. 64:534-541.
Kellner, Thomas; Sanborn, James; Wilson, Barry. 2000 In vitro and in vivo assessment of the effect of impurities and chirality on methamidophos-induced neuropathy target esterase aging. Toxicol. Sci. 54: 408-415.
Utah Ag. Expt. Stat.
Cameron, M.D., Z.D. Post, J.D. Stahl, J. Haselbach, and S.D. Aust (2000) “Cellobiose dehydrogenase-dependent biodegradation of polyacrylate polymers by Phanerochaete chrysosporium”, Environ. Sci. Pollut. Res. 7, 130-134.
Stahl, J.D., B. Van Aken, M.D. Cameron, and S.D. Aust (2001) “Hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) biodegradation in liquid and solid-state matrices by Phanerochaete chrysosporium”, Bioremediation Journal 5, 13-25.
Van Aken, B., J.D. Stahl, H. Naveau, S.N. Agathos, and S.D. Aust (2000) “Transformation of 2,4,6-trinitrotoluene (TNT) reduction products by lignin peroxidase (H8) from the white-rot basidiomycete Phanerochaete chrysosporium”, Bioremediation Journal 4, 135-145.
Reading, N.S., and S.D. Aust (2000) “Engineering a disulfide bond in recombinant manganese peroxidase results in increased thermostability”, Biotech. Prog. 16, 326-333.
Cameron, M.D., and S.D. Aust (2001) “Proteolysis of cellobiose dehydrogenase alleviates inhibition of peroxidases from Phanerochaete chrysosporium: a proposed rational for the formation of cellobiose:quinone oxidoreductase”, Arch. Biochem. Biophys. (Submitted).
Van Eden, M.E., and S.D. Aust (2001) “Ceruloplasmin” in The Encyclopedia of Molecular Medicine. Wiley. (In press).
Van Eden, M.E., and S.D. Aust (2001) “Ferritin” in The Encyclopedia of Molecular Medicine. Wiley. (In press).
Van Eden, M.E., and S.D. Aust (2001) “Ferroxidases” in The Encyclopedia of Molecular Medicine. Wiley. (In press).
Van Eden, M.E., and S.D. Aust (2000) “Intact human ceruloplasmin is required for the incorporation of iron into human ferritin”, Arch. Biochem. Biophys. 381, 119-126.
Cameron, M.D., S. Timofeevski, and S.D. Aust (2000) “Enzymology of Phanerochaete chrysosporium with respect to the degradation of recalcitrant compounds and xenobiotics”, Appl. Microbiol. Biotechnol. 54, 751-758.
Cameron, M.D., and S.D. Aust (2001) “Cellobiose dehydrogenase - An extracellular fungal flavocytochrome”, Enzyme Microbial Technol. 28, 129-138.
Cameron, M.D., and S.D. Aust (2000) “Kinetics and reactivity of the flavin and heme cofactors of cellobiose dehydrogenase from Phanerochaete chrysosporium”, Biochemistry 39, 13595-13601.
Welch, K.D., and S.D. Aust (2000) “The role of iron in lipid peroxidation”. In: Recent research developments in lipid research. Transworld Research Network 4, 161-179.
Reading, N.S., M.D. Cameron and S.D. Aust (2000) Fungi - For Biotechnology. In: Encyclopedia of Environmental Microbiology. John Wiley & Sons, New York. (In press).
Grace, Jr., J.E., M.E. Van Eden and S.D. Aust (2000) “Production of recombinant human apoferritin heteromers”, Arch. Biochem. Biophys. 384, 116-122.
Van Aken, B., M.D. Cameron, J.D. Stahl, A. Plumat, H. Naveau, S.D. Aust, and S.N. Agathos (2000) “Glutathione-mediated mineralization of 14C-labeled 2-amino-4,6-dinitrotoluene by manganese-dependent peroxidase H5 from the white-rot fungus Phanerochaete chrysosporium”, Appl. Microbiol. Biotechnol. 54, 659-664.
Reading, N.S., and S.D. Aust (2001) “Role of disulfide bonds in the stability of recombinant manganese peroxidase”, Biochemistry (Submitted).
Welch, K.D., M.E. Van Eden, and S.D. Aust (2001) “Modification of ferritin during iron loading”, Free. Rad. Biol. Med. (Submitted).
Van Eden, M.E., and S.D. Aust (2001) “The consequences of hydroxyl radical formation to the stoichiometry and kinetics of ferrous iron oxidation by human apoferritin”, Free Rad. Biol. Med. (Submitted).
Van Eden, M.E., K.D. Welch, J.E. Grace, and S.D. Aust (2001) “Human and rat ferritin isoforms”, Free Rad. Biol. Med. (Submitted).
New Mexico
Refereed
Sterling, T. M., N. K. Lownds and L. W. Murray 2001. Similar competitive ability between Centaurea solstitialis accessions resistant or susceptible to picloram. Weed Sci. 49:42-47.
Sterling, T. M., L. W. Murray and Y. Hou. 2000. Morphological variation among broom snakeweed (Gutierrezia sarothrae) populations. Weed Sci. 48:356-365.
Abstracts
Hernandez-Rios, I. and T. M. Sterling. 2001. Antioxidant response in prometryn-tolerant and -susceptible cotton varieties. Proc. Western Soc. Weed Sci. 54:xx.
Molin, W. T., H. H. Ratnayaka, and T. M. Sterling. 2001. Spurred anoda competition in wide row and ultra narrow row cotton. Proc. Western Soc. Weed Sci. 54:xx.
Ratnayaka, H., W. T. Molin and T. M. Sterling. 2001. Interaction between competition and oxidative stress tolerance in cotton and spurred anoda. Proc. Western Soc. Weed Sci. 54:xx.
Vallotton, A. D., R. P. Sabba, I. Ray and T. M. Sterling. 2001. Inheritance of picloram resistance in yellow starthistle. Proc. Western Soc. Weed Sci. 54:xx.
Hernandez-Rios, I. and T. M. Sterling. 2000. Lipid peroxidation as an index of prometryn damage in cotton. Proc. Western Soc. Weed Sci. 53:100.
Kulshreshtha, S. and T. M. Sterling. 2000. Variation in amplified chloroplast genes from different locoweed varieties in New Mexico. Proc. Western Soc. Weed Sci. 53:15.