Page Banner

United States Department of Agriculture

Agricultural Research Service

Related Topics

DAVID D DOUDS
Molecular Characterization of Foodborne Pathogens
Research Microbiologist

Phone: (215) 233-6421
Fax: (215) 233-6581
Room 0120
600 E MERMAID LN
ERRC
WYNDMOOR, PA, 19038-8598

Projects
FUNCTION OF ARBUSCULAR MYCORRHIZAL FUNGI IN ORGANIC AND CONVENTIONAL AGRICULTURE
Appropriated (D)
  Accession Number: 421473
ENHANCEMENT OF CROP GROWTH THROUGH UTILIZATION OF ARBUSCULAR MYCORRHIZAL FUNGI
Specific Cooperative Agreement (S)
  Accession Number: 420374

Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Pelletized biochar as a carrier for AM fungi in the on-farm system of inoculum production in compost and vermiculite mixtures - (Peer Reviewed Journal) - (01-Jul-14)
Evaluating the potential of mycorrhizal fungi to boost yields in field grown leeks - (Peer Reviewed Journal)
Wertheim, F.S., Douds, D.D., Handley, D.T., Hutton, M. 2014. Evaluating the potential of mycorrhizal fungi to boost yields in field grown leeks. Journal of the National Association County Agricultural Agents. http://www.nacaa.com/journal/index.php?jid=281.
Effects of pyrolysis char from various feed stocks on survivability of Salmonella enterica and E. coli 0157:H7 in agriculture soils - (Abstract Only) - (07-Mar-14)
Take advantage of mycorrhizal fungi for improved soil fertility and plant health - (Abstract Only)
Douds, D.D. 2014. Take advantage of mycorrhizal fungi for improved soil fertility and plant health. Meeting Abstract. pp. 4-5.
Inactivation of E.coli 0157:H7 in cultivable soil by fast and slow pyrolysis-generated biochars - (Peer Reviewed Journal)
Gurtler, J., Boateng, A.A., Han, Y.H., Douds, D.D. 2014. Inactivation of E.coli 0157:H7 in cultivable soil by fast and slow pyrolysis-generated biochars. Foodborne Pathogens and Disease. 11:215-223.
Survival of Salmonella, Escherichia coli 0157:H7, non-0157 shiga toxin producing E.coli, and potential surrogate bacteria in crop soil as affected by the addition of fast pyrolysis-generated switchgrass biochar - (Abstract Only)
Gurtler, J., Boateng, A.A., Douds, D.D., Bailey, R. 2013. Survival of Salmonella, Escherichia coli 0157:H7, non-0157 shiga toxin producing E.coli, and potential surrogate bacteria in crop soil as affected by the addition of fast pyrolysis-generated switchgrass biochar. Meeting Abstract. IAFP Annual Meeting, Charlotte, NC., July 28-31, 2013.Volume 1, Page 1.
Production of AM fungus colonized seedlings under organic management; suitablity of hydrolyzed fish vs. blood meal as options for N addition - (Peer Reviewed Journal)
Douds, D.D., Lee, J., Mitchell, R., Ziegler-Ulsh, C. 2013. Production of AM fungus colonized seedlings under organic management; suitablity of hydrolyzed fish vs. blood meal as options for N addition. Biological Agriculture and Horticulture. DOI: org/10.1080/01448765.2013.819296.
Survival of Salmonella and E.coli O157:H7 in soil and translocation into leek (allium porrum) as influenced by mycorrhizal fungi - (Peer Reviewed Journal)
Gurtler, J., Douds, D.D., Dirks, B.A., Quinlan, J.J., Nicholson, A., Phillips, J.G., Niemira, B.A. 2013. Survival of Salmonella and E.coli O157:H7 in soil and translocation into leek (allium porrum) as influenced by mycorrhizal fungi. Applied and Environmental Microbiology. 79:1813-1820.
Utilization of inoculum of AM fungi produced on-farm for the production of Capsicum annuum: a summary of 7 years of field trials on a conventional vegetable farm - (Peer Reviewed Journal)
Douds, D.D., Lee, J., Rogers, L., Lohman, M.E., Pinzon, N., Ganser, S. 2012. Utilization of inoculum of AM fungi produced on-farm for the production of Capsicum annuum: a summary of 7 years of field trials on a conventional vegetable farm. Biological Agriculture and Horticulture. 28:129-145.
Influence of mycorrhizal fungi (glomus intraradices) on survival of Salmonella and E.coli 0157:H7 in soil and translocation into romaine lettuce roots and shoot - (Abstract Only)
Gurtler, J., Nicholson, A., Douds, D.D., Niemira, B.A. 2012. Influence of mycorrhizal fungi (glomus intraradices) on survival of Salmonella and E.coli 0157:H7 in soil and translocation into romaine lettuce roots and shoot. Meeting Abstract. International Association of Food Protection Annual Meeting, Providence. Rhode Island., July 2012.
Inactivation of E.coli 0157:H7 in crop soil by amending with fast and slow pryolysis-generated biochars - (Abstract Only)
Gurtler, J., Boateng, A.A., Douds, D.D. 2012. Inactivation of E.coli 0157:H7 in crop soil by amending with fast and slow pryolysis-generated biochars. Meeting Abstract., IAFP Meeting, Providence, Rhode Island, July 22-25,2012.,Volume 1, Page 1.
The contribution of arbusclar mycorrhizal fungi to the success or failure of agricultural practices - (Book / Chapter)
Douds, D.D., Seidel, R. 2012. The contribution of arbusclar mycorrhizal fungi to the success or failure of agricultural practices. In: Edwards, C.A., Cheeke, T., Coleman, D., Wall, D., editors. Microbial ecology in sustainable Agroecosystems. Boca Raton, FL: Taylor Francis Group. p. 133-152.
Fall cover cropping can increase arbuscular mycorrhizae in soils supporting intensive agricultural production - (Peer Reviewed Journal)
Lehman, R.M., Taheri, W.I., Osborne, S.L., Buyer, J.S., Douds, D.D. 2012. Fall cover cropping can increase arbuscular mycorrhizae in soils supporting intensive agricultural production. Applied Soil Ecology. 61:300-304. doi:10.1016/j.apsoil.2011.11.008.
Frequent cultivation prior to planting to prevent weed competition results in an opportunity for the use of arbuscular mycorrhizal fungus inoculum - (Peer Reviewed Journal)
Douds, D.D., Nagahashi, G., Shenk, J.E. 2011. Frequent cultivation prior to planting to prevent weed competition results in an opportunity for the use of arbuscular mycorrhizal fungus inoculum. Renewable Agriculture and Food Systems. 27:251-255.
On-farm production and utilization of arbusclar mycorrhizal fungus inoculum - (Abstract Only)
Douds, D.D., Lee, J., Rogers, L. 2011. On-farm production and utilization of arbusclar mycorrhizal fungus inoculum. Meeting Abstract. 1:1.
Influence of mycorrhizal fungi on survival of salmonella and E.coli O157:H7 in soil and translocation into allium porrum roots and stem - (Abstract Only)
Gurtler, J., Douds, D.D., Dirks, B.P., Quinlan, J.J., Niemira, B.A. 2011. Influence of mycorrhizal fungi on survival of salmonella and E.coli O157:H7 in soil and translocation into allium porrum roots and stem. International Association for Food Protection Annual Meeting, Milwaukee, Wisconsin, July 31 - August 3, 2011., Volume 1, P. 1.
Identification of some diterpenoids and hydroxy fatty acids from carrot root cell walls that stimulate the presymbiotic hyphal growth of AM fungi - (Abstract Only)
Strahan, G.D., Nagahashi, G., Douds, D.D. 2011. Identification of some diterpenoids and hydroxy fatty acids from carrot root cell walls that stimulate the presymbiotic hyphal growth of AM fungi. Biophysical Society. 1:1.
The effects of hydroxy fatty acids on the hyphal branching of germinated spores of AM fungi - (Peer Reviewed Journal)
Nagahashi, G., Douds, D.D. 2011. The effects of hydroxy fatty acids on the hyphal branching of germinated spores of AM fungi. Fungal Biology. 115:351-358.
On-farm AM fungus inoculum production: a complete how-to on-farm am fungus inoculum production - (Review Article)
Lohman, M., Ziegler, C., Douds, D.D. 2011. On-farm AM fungus inoculum production: a complete how-to on-farm am fungus inoculum production. Review Article. Available: http://www.rodaleinstitute.org/20101206.
Monitoring the decline in AM fungus populations and efficacy during a long term bare fallow - (Peer Reviewed Journal)
Douds, D.D., Nagahashi, G., Wilson, D.O., Moyer, J. 2011. Monitoring the decline in AM fungus populations and efficacy during a long term bare fallow. Plant and Soil. 342:319-326.
Functional categories of root exudate components and their relevance to AM fungal growth - (Book / Chapter)
Nagahashi, G., Douds, D.D., Yurdagul, F. 2010. Functional categories of root exudate components and their relevance to AM fungal growth. In: Koltai, H., Kapulnik, Y., editors. Arbuscular Mycorrhizas: Physiology and Function. p. 33-56.
Production of inoculum of indigenous AM fungi and options for diluents of compost for on-farm production of AM fungi - (Peer Reviewed Journal)
Douds, D.D., Nagahashi, G., Hepperly, P.R. 2009. Production of inoculum of indigenous AM fungi and options for diluents of compost for on-farm production of AM fungi. Bioresource Technology. 101:2326-2330.
Exploring the role of arbuscular mycorrhizal fungi in carbon sequestration in agricultural soil, Part III - (Abstract Only) - (01-Aug-09)
Influence of farm management upon arbuscular mycorrhizal fungi - (Abstract Only) - (01-Jun-09)
Arbuscular Mycorrhizal Fungi and Glomalin Enhance Carbon Sequestration in Organic Farming Systems - (Abstract Only)
Nichols, K.A., Douds, D.D., Hepperly, P.R., Seidel, R. 2009. Arbuscular Mycorrhizal Fungi and Glomalin Enhance Carbon Sequestration in Organic Farming Systems. Meeting Abstract.
Germinating spores of glomus intraradices can use internal and exogenous nitrogen sources for a de novo biosynthesis of amino acids - (Peer Reviewed Journal)
Jin, H., Pfeffer, P., Govindarajulu, M., Douds, D.D., Piotrowski, E.G., Nagahashi, G., Bucking, H., Lammers, P.J., Shachar-Hill, Y., Gachomo, E. 2009. Germinating spores of glomus intraradices can use internal and exogenous nitrogen sources for a de novo biosynthesis of amino acids. New Phytologist. 184:399-411.
Mid-Infrared and Near Infrared Spectral Properties of Mycorrhizal and Non-Mycorrhizal Root Cultures - (Peer Reviewed Journal)
Calderon, F.J., Acosta Martinez, V., Douds, D.D., Reeves III, J.B., Vigil, M.F. 2009. Mid-Infrared and Near Infrared Spectral Properties of Mycorrhizal and Non-Mycorrhizal Root Cultures. Journal of Applied Spectroscopy. 63(5)494-500.
Utilization of inoculum produced on-farm for production of AM fungus colonized pepper and tomato seedlings under conventional management - (Peer Reviewed Journal)
Douds, D.D. 2009. Utilization of inoculum produced on-farm for production of AM fungus colonized pepper and tomato seedlings under conventional management. Biological Agriculture and Horticulture. 26:353-364.
On-farm Production and Utilization of AM Fungus Inoculum - (Peer Reviewed Journal)
Douds, D.D., Lee, J. 2008. On-farm Production and Utilization of AM Fungus Inoculum. eOrganic.http://www.extension.org.
Metabolite fingerprinting of exudates from carrot roots grown under phosphorus stress - (Book / Chapter) - (13-Jul-08)
Inoculation of strawberries with AM fungi produced on-farm increased yield - (Peer Reviewed Journal)
Douds, D.D., Nagahashi, G., Shenk, J.E., Demchak, K. 2009. Inoculation of strawberries with AM fungi produced on-farm increased yield. Biological Agriculture and Horticulture. 26:209-219.
Organic farming enhances soil carbon and its benefits - (Book / Chapter)
Hepperly, P., Seidel, R., Pimentel, D., Hanson, J., Douds, D.D. 2007. Organic farming enhances soil carbon and its benefits. Soil Carbon Management, Economic, Environmental and Societal Benefits, Kimble, Rice, Read, Mooney, Follet, and Lal (Eds.) CRC Press. p.129-153.
Choosing a mixture ratio for the on-farm production of AM fungus inoculum in mixtures of compost and vermiculite - (Peer Reviewed Journal)
Douds, D.D., Nagahashi, G., Reider, C., Hepperly, P. 2008. Choosing a mixture ratio for the on-farm production of AM fungus inoculum in mixtures of compost and vermiculite. Compost Science and Utilization. 16(1):52-60.
Inoculation with Am Fungi Increases the Yield of Potatoes in a High P Soil - (Peer Reviewed Journal)
Douds, D.D., Nagahashi, G., Reider, C., Hepperly, P. 2007. Inoculation with am fungi increases the yield of potatoes in a high p soil. Biological Agriculture and Horticulture. 25:67-78.
Separated Components of Root Exudates and Cytosol Stimulate Different Morphologically Identifiable Types of Branching Responses by Arbuscular Mycorrhizal Fungi - (Peer Reviewed Journal)
Nagahashi, G., Douds, D.D. 2007. Separated components of carrot root exudates are specifically exuded and stimulate two different types of hyphal branching responses of an arbuscular mycorrhizal fungus. Mycological Research. 111:487-492.
The Rodale Institute Farming Systems Trial 1981 to 2005: Long Term Analysis of Organic and Conventional Maize and Soybean Cropping Systems - (Review Article)
Hepperly, P.R., Douds, D.D., Seidel, R. 2006. The Rodale Institute Farming Systems Trial 1981 to 2005: Long Term Analysis of Organic and Conventional Maize and Soybean Cropping Systems. Long-Term Field Experiments in Organic Farming. p.15-31
The Form of Nitrogen Stored and Transported by the Extraradical Hyphae of An Arbuscular Mycorrhizal Symbiosis - (Peer Reviewed Journal)
Jin, H., Pfeffer, P.E., Douds, D.D., Piotrowski, E.G., Lammers, P.J., Shachar-Hill, Y. 2005. The form of nitrogen stored and transported by the extraradical hyphae of an arbuscular mycorrhizal symbiosis. New Phytologist. 435. pp. 819-823.
Nitrogen Transfer in Arbuscular Mycorrhizal Symbiosis - (Peer Reviewed Journal)
Govindarajulu, M., Pfeffer, P.E., Jin, H., Abubaker, J., Douds, D.D., Allen, J.W., Bucking, H., Lammers, P.J., Shachar-Hill, Y. 2005. Nitrogen transfer in arbuscular mycorrhizal symbiosis. Nature Magazine. 435. pp. 819-823.
Environment, Energy and Economic Comparisons of Organic and Conventional Farming Systems - (Review Article)
Pimentel, D., Hanson, J., Seidel, R., Douds, D.D., Hepperly, P. 2005. Environment, energy and economic comparisons of organic and conventional farming systems. Bioscience. July 2005. v. 55. #7. pp. 573-582.
The Form of Nitrogen Stored and Transported to the RI T-Dna Carrot Root by the Extradical Hyphae of Am Fungi - (Abstract Only)
Jin, H., Pfeffer, P.E., Shachar-Hill, Y., Douds, D.D., Piotrowski, E.G., Lammers, P.J. 2004. The form of nitrogen stored and transported to the ri t-dna carrot root by the extradical hyphae of am fungi. Meeting Abstract #581.
Bidirectional Transfer of Carbon and Nitrogen Between Fungus and Host in the Arbuscular Mycorrhizal Symbiosis - (Abstract Only)
Pfeffer, P.E., Douds, D.D., Schwartz, D.P., Govindarajulu, M., Bucking, W., Shachar-Hill, Y. 2004. Bidirectional transfer of carbon and nitrogen between fungus and host in the arbuscular mycorrhizal symbiosis. Meeting Abstract.
Effect of Hydrophilic Zein Films on the Growth of Tomato Plants and Evaporative Water Loss - (Abstract Only)
Parris, N., Douds, D.D., Dickey, L.C., Moreau, R.A., Phillips, J.G. 2004. Effect of hydrophilic zein films on the growth of tomato plants and evaporative water loss. Meeting Abstract.95th American Oil Chemists' Society Annual Meeting and Exposition, Cincinnati, Ohio, May 9-12, 2004. Book of Abstracts. p.123.
Effect of Hydrophilic Zein Films on the Growth of Tomato Plants and Evaporative Water Loss - (Peer Reviewed Journal)
Parris, N., Douds, D.D., Dickey, L.C., Moreau, R.A., Phillips, J.G. 2004. Effect of hydrophilic zein films on the growth of tomato plants and evaporative water loss. Hort Science.39(6).p.1324-1326.
On-Farm Production of Am Fungus Inoculum in Compost-Vermiculite Mixtures - (Peer Reviewed Journal)
Douds, D.D., Nagahashi, G., Pfeffer, P.E., Reider, C., Kayser, W. 2005. On-farm production of am fungus inoculum in compost-vermiculite mixtures. Applied and Environmental Microbiology. 2005. p. 15-21.
On-Farm Production and Utilization of Mycorrhizal Fungus Inoculum - (Peer Reviewed Journal)
Douds, D.D., Nagahashi, G., Pfeffer, P.E., Kayser, W.M., Reider, C. 2005. On-farm production and utilization of mycorrhizal fungus inoculum. Canadian Journal of Plant Science v.85. pp.15-21.
Root Exudate of Pmi Tomato Mutant M161 Reduces Am Fungal Proliferation in Vitro - (Peer Reviewed Journal)
DAVID-SCHWARTZ, R., GADKAR, V., NAGAHASHI, G., DOUDS, D.D., WININGER, S., KAPULNIK, Y. ROOT EXUDATE OF PMI TOMATO MUTANT M161 REDUCES AM FUNGAL PROLIFERATION IN VITRO. FEDERATION OF EUROPEAN MICROBIOLOGICAL SOCIETIES MICROBIOL LETTERS. v. 223. p. 193-198. 2003
On-Farm Production and Utilization of Mycorrhizal Fungus Inocula - (Abstract Only)
DOUDS, D.D., NAGAHASHI, G., PFEFFER, P.E., KAYSER, W., REIDER, C. ON-FARM PRODUCTION AND UTILIZATION OF MYCORRHIZAL FUNGUS INOCULA. INTERNATIONAL CONFERENCE ON MYCORRHIZA. 2003. ABSTRACT #147. P. 198.
Exploring the Bidirectional Transfer of Carbon and Nitrogen Between Fungus and Host in the Arbuscular Mycorrhizal Symbiosis - (Abstract Only)
PFEFFER, P.E., DOUDS, D.D., SCHWARTZ, D.P., GOVINDARAJULU, M., BUCKING, H., SHACHAR-HILL, Y. EXPLORING THE BIDIRECTIONAL TRANSFER OF CARBON AND NITROGEN BETWEEN FUNGUS AND HOST IN THE ARBUSCULAR MYCORRHIZAL SYMBIOSIS. INTERNATIONAL CONFERENCE ON MYCORRHIZA. 2003.
The Fungus Does Not Transfer Carbon to Or Between Roots in An Arbuscular Mycorrhizal Symbiosis - (Peer Reviewed Journal)
Pfeffer, P.E., Douds, D.D., Schwartz, D.P., Govindarajulu, M., Shachar-Hill, Y. 2004. The fungus does not transfer carbon to or between roots in an arbuscular mycorrhizal symbiosis. New Phytologist. v. 163. pp.617-627.
Carbon Export from Arbuscular Mycorrhizal Roots Involves the Translocation of Carboyhdrate As Well As Lipid - (Peer Reviewed Journal)
BAGO, B., PFEFFER, P.E., ABUBAKER, J., JUN, J., ALLEN, J.W., BROUILLETTE, J.N., DOUDS, D.D., LAMMERS, P.J., SHACHAR-HILL, Y. CARBON EXPORT FROM ARBUSCULAR MYCORRHIZAL ROOTS INVOLVES THE TRANSLOCATION OF CARBOYHDRATE AS WELL AS LIPID. PLANT PHYSIOLOGY. 2003. v. 131. p. 1-12.
Inoculation with Mycorrhizal Fungi Inreases Teh Yield of Green Peppers in a High P Soil - (Peer Reviewed Journal)
DOUDS, D.D., REIDER, C. INOCULATION WITH MYCORRHIZAL FUNGI INREASES TEH YIELD OF GREEN PEPPERS IN A HIGH P SOIL. Biological Agriculture and Horticulture. v. 21. p. 91-102. 2003.
Contributions of Arbuscular Mycorrhizas to Soil Biological Fertility - (Book / Chapter)
Douds, D.D., Johnson, N.C. 2003. Contributions of arbuscular mycorrhizas to soil biological fertility. Book Chapter.
ARS News Articles
Last Modified: 9/29/2014