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National Institute of Environmental Health Sciences

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Your Environment. Your Health.

Person Details: Ian L. Pepper

Superfund Research Program

Ian L. Pepper

University of Arizona
Environmental Research Laboratory
2601 E. Airport Drive
Tucson, Arizona 85706
Phone: 520-626-3328
Fax: 520-573-0852
Email: ipepper@ag.arizona.edu

Projects

Hazardous Waste Sites

Camp Navajo (Army depot) DOD site

  • University of Arizona: Gene Enhanced Remediation of Co-Contaminated Soils

Olive Grove Dross Site

  • University of Arizona: Gene Enhanced Remediation of Co-Contaminated Soils

Publications

2014

2004

  • Gentry TJ, Josephson KL, Pepper IL. 2004. Functional establishment of introduced chlorobenzoate degraders following bioaugmentation with newly activated soil Enhanced contaminant remediation via activated soil bioaugmentation. Biodegradation 15(1):67-75. PMID:14971859
  • Gentry TJ, Wang G, Rensing CG, Pepper IL. 2004. Real-time PCR quantification of a green fluorescent protein-labeled, genetically engineered Pseudomonas putida strain during 2-chlorobenzoate degradation in soil. FEMS Microbiol Lett 233(2):307-314. PMID:15063501

2002

  • Gentry TJ, Grass G, Rensing CG, Pepper IL. 2002. Development of a GFP-Reporter System to Detect pJP4 Pasmid Transfer in Soil. In: Proceedings of The 102nd General Meeting of the American Society for Microbiology, May 19-23. Salt Lake, UT.
  • Gentry TJ, Pepper IL. 2002. Enhanced Degradation of 2-, 3-, and 4-Chlorobenzoate in Two Soils Through Bioaugmentation with Activated Soil. In: Proceedings of the Superfund Basic Research Program Annual Meeting, November 3-6, 2002. Tucson, AZ.
  • Gentry TJ, Pepper IL. 2002. GFP-Labeled Plasmid for Monitoring Horizontal Gene Transfer in Soil. In: Agronomy Abstracts. ASA (American Society of Agronomy). Madison, WI.
  • Marlowe EM, Wang J, Pepper IL, Maier RM. 2002. Application of a reverse transcription-PCR assay to monitor regulation of the catabolic nahAc gene during phenanthrene degradation. Biodegradation 13(4):251-260. PMID:12521289
  • Newby DT, Pepper IL. 2002. Dispersal of plasmid pJP4 in unsaturated and saturated 2,4-dichlorophenoxyacetic acid contaminated soil. FEMS Microbiol Ecol 39(2):157-164. PMID:19709195
  • Pepper IL, Gentry TJ, Newby DT, Roane TM, Josephson KL. 2002. The role of cell bioaugmentation and gene bioaugmentation in the remediation of co-contaminated soils. Environ Health Perspect 110(Suppl.6):943-946. PMID:12634123
  • Rensing CG, Newby DT, Pepper IL. 2002. The role of selective pressure and selfish DNA in horizontal gene transfer and soil microbial community adaptation. Soil Biol Biochem 34(3):285-296.

2001

  • Gentry TJ, Newby DT, Josephson KL, Pepper IL. 2001. Soil microbial population dynamics following bioaugmentation with a 3-chlorobenzoate-degrading bacterial culture. Biodegradation 12(5):349-357. PMID:11998824
  • Josephson KL, Pepper IL. 2001. Population dynamics of microbes introduced into co-contaminated soil. In: Proceedings of the International Society of Microbial Ecology, August 26-31. Amsterdam,
  • Roane TM, Josephson KL, Pepper IL. 2001. Dual-bioaugmentation strategy to enhance remediation of cocontaminated soil. Appl Environ Microbiol 67(7):3208-3215. PMID:11425743
  • Roane TM, Newby DT, Josephson KL, Pepper IL. 2001. The role of cell bioaugmentation and gene bioaugmentation in the remediation of co-contaminated soils. In: Proceedings of the NIEHS (National Institute of Environmental Health Sciences) Conference on Aplication of Technology to Chemical Mixture Research, January 9-11. Fort Collins, CO.
  • Stauber CE, Pepper IL. 2001. Soil microbial community resonse to stress. An indication of long-term exposure and adaption. In: Proceedings of the American Society of Microbiology. pp.Q-216.

2000

  • Gentry TJ, Josephson KL, Newby DT, Pepper IL. 2000. Degradation of 2,4-dichlorophenoxyacetic acid and 3-chlorobenzoic acid in two soils with variable organic matter content. In: Proceedings of the Annual Meeting of the American Society of Microbiology, May 21-25. Los Angeles, CA. pp.Q-174.
  • Josephson KL, Pepper IL. 2000. Microbial dynamics in soil contaminated with cadmium and 2,4-dichlorophenoxyacetic acid. In: Proceedings of the Annual Meeting of the American Society of Microbiology, May 21-25. Los Angeles, CA. pp.I-94.
  • Newby DT, Gentry TJ, Pepper IL. 2000. Comparison of 2,4-dichlorophenoxyacetic acid degradation and plasmid transfer in soil resulting from bioaugmentation with two different pJP4 donors. Appl Environ Microbiol 66(8):3399-3407. PMID:10919798
  • Newby DT, Josephson KL, Pepper IL. 2000. Detection and characterization of plasmid pJP4 transfer to indigenous soil bacteria. Appl Environ Microbiol 66(1):290-296. PMID:10618238
  • Newby DT, Pepper IL. 2000. Plasmid pJP4 dispersal within unsaturated and saturated 2,4-D contaminated soil columns. In: Proceedings of the Annual Meeting of the American Society of Microbiology, May 21-25. Los Angeles, CA. pp.Q-245.
  • Roane TM, Pepper IL. 2000. Microbial responses to environmentally toxic cadmium. Microb Ecol 38(4):358-364. PMID:10758182

1999

  • Newby DT, Pepper IL. 1999. Evaluation of gene transfer as a mode of plasmid dispersal in 2,4-D contaminated soil. In: Proceedings of the 1999 Conference on Hazardous Waste Research, May 24-27. St. Louis, MO.
  • Newby DT, Pepper IL. 1999. Plasmid pJP4 gene dispersal through unsaturated 2,4-D contaminated soils. In: Proceedings of the 99th General American Society for Microbiology Meeting. Chicago, IL.
  • Roane TM, Pepper IL. 1999. Role of microorganisms in metal transformation and remediation. In: Proceedings of the 1999 Conference on Hazardous Waste Research, May 24-27. St. Louis, MO.
  • Roane TM, Pepper IL. 1999. Use of cadmium-resistant microorganisms in co-contaminated remediation. In: Proceedings of the 99th General American Society for Microbiology Meeting. Chicago, IL.

1998

  • Josephson KL, Pepper IL. 1998. Gene transfer of the large catabolic plasmid pJP4 to enhance remediation of organic and metal contaminated soil. In: Proceedings of the Eighth International Symposium on Microbial Ecology. Halifax, Canada.
  • Newby DT, Josephson KL, Pepper IL. 1998. Donor counter-selection enhances detection of plasmid pJP4 transfer. In: Proceedings of the Symposium on Risk Considerations for Environmental Health and Safety. The University of Arizona, Tucson, AZ.
  • Newby DT, Josephson KL, Pepper IL. 1998. Enhanced detection of plasmid pJP4 transfer in 2,4-D contaminated soils. In: Proceedings of the NIEHS/EPA (National Institute of Environmental Health Sciences/Environmental Protection Agency) Superfund Basic Research Program Meeting. Berkeley, CA.
  • Newby DT, Josephson KL, Pepper IL. 1998. Enhanced detection of plasmid pJP4 transfer using donor counter-selection. In: Proceedings of the 98th General American Society for Microbiology Meeting. Atlanta, GA.
  • Pepper IL. 1998. Influence of gene transfer on biodegradation of 2,4-dichlorophenoxyacetic acid. In: Proceedings of the Superfund Basic Research Program: A Decade of Improving Health through Multi-Disciplinary Research. Chapel Hill, NC.
  • Pepper IL. 1998. The role of gene transfer in remediation of contaminated soils. In: Proceedings of the Symposium on Risk Considerations for Environmental Health and Safety. The University of Arizona, Tucson, AZ.
  • Pepper IL, Roane TM. 1998. The role of introduced microbes in remediation of co-contaminated soils. In: Proceedings of the Pacific Basin Conference on Hazardous Waste, Honolulu, Hawaii, 22-24 April, 1998. Honolulu, HI.
  • Roane TM, Josephson KL, Pepper IL. 1998. Co-inoculant microbial remediation of metal/organic contaminated soils. In: Proceedings of the NIEHS/EPA (National Institute of Environmental Health Sciences/Environmental Protection Agency) Superfund Basic Research Program Meeting. Berkeley, CA.
  • Roane TM, Pepper IL. 1998. Microbial cooperation in the remediation of co-contaminated systems. In: Proceedings of the Eighth International Symposium on Microbial Ecology. Halifax, Canada.
  • Roane TM, Pepper IL. 1998. Microbial remediation of soils co-contaminated with 2,4-dichlorophenoxyacetic acid and cadmium. In: Proceedings of the 12th Annual Conference on Hazardous Waste Research. Kansas City, MO. pp.343-356.
  • Roane TM, Pepper IL. 1998. The use of microbial metal-resistance in the bioremediation of metal/organic contaminated systems. In: Proceedings of the 98th General American Society for Microbiology Meeting. Atlanta, GA.

1997

  • Roane TM, Pepper IL. 1997. Microbial remediation of soils co-contaminated with 2,-4-dichlorophenoxyacetic acid and cadmium. In: Proceedings of the American Society of Microbiology. Miami Beach, FL.
  • Roane TM, Pepper IL. 1997. Microbially-induced biodegradation of 2,4-dichlorophenoxyacetic acid in the presence of cadmium in co-contaminated soils. In: Proceedings of the International Biometals Symposium. Calgary, Alberta, Canada.
  • Roane TM, Pepper IL, Maier RM. 1997. Microbial remediation of metals. In: Bioremediation: Principles and Practice. Cambridge University Press, Cambridge, United Kingdom. pp.312-340.

1996

  • DiGiovanni GD, Neilson JW, Pepper IL, Sinclair NA. 1996. Gene transfer of Alcaligenes eutrophus JMP134 plasmid pJP4 to indigenous soil recipients. Appl Environ Microbiol 62(7):2521-2526. PMID:8779592
  • DiGiovanni GD, Pepper IL, Sinclair NA. 1996. Plasmid diversity within a 2,4-D acid degrading Variovorax paradoxus population isolated from a contaminated soil. J Environ Sci Health A Tox Hazard Subst Environ Eng A31(5):963-976. doi:10.1080/10934529609376400
  • Roane TM, Pepper IL. 1996. Long-term influences of metal contamination on soil microbial communities. In: Proceedings of the 95th General American Society for Microbiology Meeting, Washington, DC.

1995

  • Jutras EM, Maier RM, Pepper IL. 1995. Optimization of arbitrarily primed PCR for identification of bacterial isolates. J Microbiol Methods 24(1):55-63.

1994

  • Neilson JW, Josephson KL, Pepper IL, Arnold RG, DiGiovanni GD, Sinclair NA. 1994. Frequency of horizontal gene transfer of a large catabolic plasmid (pJP4) in soil. Appl Environ Microbiol 60:4053-4058. PMID:7993092

1992

  • Neilson JW, Josephson KL, Pillai SD, Pepper IL. 1992. Polymerase chain reaction and gene probe detection of the 2,4-dichlorophenoxyacetic acid degradation plasmid pJP4. Appl Environ Microbiol 58:1271-1275. PMID:1599246
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