Page Banner

United States Department of Agriculture

Agricultural Research Service

Daniel P Roberts
Research Leader


Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Proteomic investigation of Rhizoctonia solani AG 4 identifies secretome and mycelial proteins with roles in plant cell wall degradation and virulence -
Lakshman, D.K., Roberts, D.P., Natarajan, S.S., Garrett, W.M., Alkharouf, N., Darwish, O., Khan, F.H., Paine, A., Mitra, A. 2016. Proteomic investigation of Rhizoctonia solani AG 4 identifies secretome and mycelial proteins with roles in plant cell wall degradation and virulence. Journal of Agricultural and Food Chemistry. 64:3101-3110.
Ethanol extracts of Serratia marcescens are compatible with Trichoderma isolates for control of damping-off of cucumber caused by Pythium ultimum -
Use of formulated Trichoderma sp. Tri-1 in combination with reduced rates of chemical pesticide for control of Sclerotinia sclerotiorium on oilseed rape -
Hu, X., Roberts, D.P., Xie, L., Yu, C., Li, Y., Qin, L., Hu, L., Zhang, Y., Liao, X. 2016. Use of formulated Trichoderma sp. Tri-1 in combination with reduced rates of chemical pesticide for control of Sclerotinia sclerotiorium on oilseed rape. Crop Protection. 79:124-127.
Phosphate solubilization and promotion of maize growth in a calcareous soil by penicillium oxalicum P4 and aspergillus niger P85 -
Yin, Z., Shi, F., Jiang, H., Roberts, D.P., Chen, S., Fan, B. 2015. Phosphate solubilization and promotion of maize growth in a calcareous soil by penicillium oxalicum P4 and aspergillus niger P85. Canadian Journal of Microbiology. 61:913-923.
Components of a rice-oilseed rape production system augmented with trichoderma sp. Tri-1 control sclerotinia sclerotiorum on oilseed rape -
Hu, X., Roberts, D.P., Xie, L., Maul, J.E., Yu, C., Li, Y., Zhang, Y., Qin, L., Liao, X. 2015. Components of a rice-oilseed rape production system augmented with trichoderma sp. Tri-1 control sclerotinia sclerotiorum on oilseed rape. Phytopathology. 105:1325-1333.
Control of damping-off of organic and conventional cucumber with extracts from a plant-associated bacterium rivals a seed treatment pesticide -
Roberts, D.P., Lakshman, D.K., Maul, J.E., McKenna, L.F., Buyer, J.S., Fan, B. 2014. Control of damping-off of organic and conventional cucumber with extracts from a plant-associated bacterium rivals a seed treatment pesticide. Crop Protection. 65:86-94.
Characterization of apoplast phenolics: Invitro oxidation of acetosyringone results in a rapid prolonged increase in the redox potential -
Baker, C.J., Mock, N.M., Whitaker, B.D., Hammond, R., Roberts, D.P., Nemchinov, L.G., Aver'Yanov, A.A. 2014. Characterization of apoplast phenolics: Invitro oxidation of acetosyringone results in a rapid prolonged increase in the redox potential. Physiological and Molecular Plant Pathology. 86:57-63.
Microbial community structure and abundance in the rhizosphere and bulk soil of a tomato cropping system that includes cover crops -
Maul, J.E., Buyer, J.S., Lehman, R.M., Culman, S., Blackwood, C., Roberts, D.P., Zasada, I.A., Teasdale, J.R. 2014. Microbial community structure and abundance in the rhizosphere and bulk soil of a tomato cropping system that includes cover crops. Applied Soil Ecology. 77:42-50. DOI: 10.1016/j.apsoil.2014.01.002.
Formulations of Bacillus subtilis BY-2 suppress Sclerotinia sclerotiorum on oilseed rape in the field -
Hu, X., Roberts, D.P., Xie, L., Maul, J.E., Yu, C., Li, Y., Jing, M., Liao, X., Che, Z., Liao, X. 2014. Formulations of Bacillus subtilis BY-2 suppress Sclerotinia sclerotiorum on oilseed rape in the field. Biological Control. 70:54-64.
Bacillus megaterium A6 suppresses Sclerotinia sclerotiorum on oilseed rape in the field and promotes oilseed rape growth -
Hu, X., Roberts, D.P., Xie, L., Maul, J.E., Yu, C., Li, Y., Zhang, S., Liao, X. 2013. Bacillus megaterium A6 suppresses Sclerotinia sclerotiorum on oilseed rape in the field and promotes oilseed rape growth. Crop Protection. 52:151-158.
Development of a biologically based fertilizer, incorporating Bacillus megaterium A6, for improved phosphorus nutrition of oilseed rape -
Hu, X., Roberts, D.P., Xie, L., Maul, J.E., Yu, C., Li, Y., Zhang, S., Liao, X. 2013. Development of a biologically based fertilizer, incorporating Bacillus megaterium A6, for improved phosphorus nutrition of oilseed rape. Canadian Journal of Microbiology. 59:231-236.
Real-time monitoring of the extracellular redox potential of cell suspensions during plant/bacterial interactions -
Baker, C.J., Kovalskaya, N.Y., Mock, N.M., Deahl, K.L., Owens, R.A., Whitaker, B.D., Roberts, D.P., Hammond, R., Averyanov, A.A. 2013. Real-time monitoring of the extracellular redox potential of cell suspensions during plant/bacterial interactions. Physiological and Molecular Plant Pathology. 82:20-27.
Genes expressed by the biological control bacterium Pseudomonas protegens Pf-5 on seed surfaces under the control of the global regulators GacA and RpoS -
Kidarsa, T.A., Shaffer, B.T., Goebel, N.C., Roberts, D.P., Buyer, J.S., Johnson, A., Kobayashi, D.Y., Paulsen, I., Loper, J.E. 2013. Genes expressed by the biological control bacterium Pseudomonas protegens Pf-5 on seed surfaces under the control of the global regulators GacA and RpoS. Environmental Microbiology. 15:716-735.
Gene expression profiling of the plant pathogenic basidiomycetous fungus Rhizoctonia solani AG 4 reveals putative virulence factors Reprint Icon -
Lakshman, D.K., Roberts, D.P., Alkharouf, N., Mitra, A., Natarajan, S.S. 2012. Gene expression profiling of the plant pathogenic basidiomycetous fungus Rhizoctonia solani AG 4 reveals putative virulence factors. Phytopathology. 104(5):1020-1035.
Effect of overexpressing rsmA from Pseudomonas aeruginosa on virulence of select phytotoxin-producing strains of P. syringae -
Kong, H., Roberts, D.P., Patterson, C.D., Kuehn, S., Heeb, S., Lakshman, D.K., Lydon, J. 2012. Effect of overexpressing rsmA from Pseudomonas aeruginosa on virulence of select phytotoxin-producing strains of P. syringae. Phytopathology. 102:575-587.
An internal standard technique for improved quantitative analysis of apoplastic metabolites in tomato leaves -
Baker, C.J., Kovalskaya, N.U., Mock, N.M., Owens, R.A., Deahl, K.L., Whitaker, B.D., Roberts, D.P., Hammond, R., Averyanov, A.A. 2012. An internal standard technique for improved quantitative analysis of apoplastic metabolites in tomato leaves. Physiological and Molecular Plant Pathology. 78:31-37.
Formulations of the endophytic bacterium Bacillus subtilis Tu-100 suppress Sclerotinia sclerotiorum on oilseed rape and improve plant vigor in field trials conducted at separate locations -
Hu, X., Roberts, D.P., Maul, J.E., Emche, S.E., Liao, X., Gao, X., Gao, Y., Mckenna, L.F., Buyer, J.S., Liu, S. 2011. Formulations of the endophytic bacterium Bacillus subtilis Tu-100 suppress Sclerotinia sclerotiorum on oilseed rape and improve plant vigor in field trials conducted at separate locations. Canadian Journal of Microbiology. 57(7): 539-546.
Detection of bacterial aggregation in cell suspensions treated with pathogenic bacteria -
Baker, C.J., Owens, R.A., Whitaker, B.D., Mock, N.M., Deahl, K.L., Roberts, D.P., Orlandi, E., Averyanov, A.A. 2011. Detection of bacterial aggregation in cell suspensions treated with pathogenic bacteria. Physiological and Molecular Plant Pathology. 75:170-175.
Evaluation of efficacy of microbial biological control agents - commercially acceptable control levels -
Endophytic Trichoderma isolates from tropical environments delay disease onset and induce resistance against Phytophthora capsici in hot pepper using multiple mechanisms -
Bae, H., Roberts, D.P., Lim, H.S., Strem, M.D., Park, S., Ryu, C., Melnick, R., Bailey, B.A. 2011. Endophytic Trichoderma isolates from tropical environments delay disease onset and induce resistance against Phytophthora capsici in hot pepper using multiple mechanisms. Molecular Plant-Microbe Interactions. 24:336-351.
Mutation of a degS homologue in Enterobacter cloacae decreases colonization and biological control of damping-off caused by Pythium ultimum on cucumber -
Roberts, D.P., Lohrke, S.M., Mckenna, L.F., Lakshman, D.K., Kong, H.N., Lydon, J. 2011. Mutation of a degS homologue in Enterobacter cloacae decreases colonization and biological control of damping-off caused by Pythium ultimum on cucumber. Microbiology. 101:271-280.
Impact of the Spatial Heterogeneity of the Spermosphere and Rhizosphere on Performance of Bacterial Biological Control Agents -
Roberts, D.P., Kobayashi, D.Y. 2011. Impact of the Spatial Heterogeneity of the Spermosphere and Rhizosphere on Performance of Bacterial Biological Control Agents. In: Maheshwari, D.K., editor. Bacteria in Agrobiology: Crop Ecosystems. Berlin Heidelberg: Springer. p. 111-130.
Selection of genetically diverse trichoderma spp. isolates for suppression of phytophthora capsici on bell pepper -
Roberts, D.P., Maul, J.E., Mckenna, L.F., Emche, S.E., Meyer, S.L., Collins, R.T., Bowers, J.H. 2010. Selection of genetically diverse trichoderma spp. isolates for suppression of phytophthora capsici on bell pepper. Canadian Journal of Microbiology. 56:864-873.
Effect of viroid infection on the dynamics of phenolic metabolites in the apoplast of tomato Reprint Icon -
Baker, C.J., Owens, R.A., Whitaker, B.D., Mock, N.M., Deahl, K.L., Roberts, D.P., Averyanov, A.A. 2010. Effect of viroid infection on the dynamics of phenolic metabolites in the apoplast of tomato. Physiological and Molecular Plant Pathology. 74:214-220.
Factors Affecting Soil Microbial Community Structure in Tomato Cropping Systems Reprint Icon -
Buyer, J.S., Teasdale, J.R., Roberts, D.P., Zasada, I.A., Maul, J.E. 2010. Factors Affecting Soil Microbial Community Structure in Tomato Cropping Systems. Soil Biology and Biochemistry. 42:831-841.
Factors Affecting Soil Microbial Community Structure in Tomato Cropping Systems Reprint Icon -
Buyer, J.S., Teasdale, J.R., Roberts, D.P., Zasada, I.A., Maul, J.E. 2010. Factors Affecting Soil Microbial Community Structure in Tomato Cropping Systems. Soil Biology and Biochemistry. 42:831-841.
Reduced carbon utilization, competitive colonization of the spermosphere, and disease suppression by Enterobacter cloacae -
Roberts, D.P., Mckenna, L.F., Buyer, J.S. 2009. Reduced carbon utilization, competitive colonization of the spermosphere, and disease suppression by Enterobacter cloacae [abstract]. International Plant Growth Promoting Rhizobacteria Workshop.
Differential induction of redox sensitive extracellular phenolic amides in potato -
Baker, C.J., Whitaker, B.D., Mock, N.M., Rice, C., Roberts, D.P., Deahl, K.L., Ueng, P.P., Aver'Yanov, A.A. 2009. Differential induction of redox sensitive extracellular phenolic amides in potato. Physiological and Molecular Plant Pathology. 73:109-115.
Influence of host seed on metabolic activity by Enterobacter cloacae in the spermosphere Reprint Icon -
Roberts, D.P., Baker, C.J., Mckenna, L.F., Liu, S., Buyer, J.S., Kobayashi, D.Y. 2009. Influence of host seed on metabolic activity by Enterobacter cloacae in the spermosphere. Soil Biology and Biochemistry. 41:754-761.
Suppression of Phytophthora capsici on bell pepper with isolates of Trichoderma -
Roberts, D.P., Mckenna, L.F. 2008. Suppression of Phytophthora capsici on bell pepper with isolates of Trichoderma [abstract]. Proceedings of International Research Conference on Methyl Bromide Alternatives.
Evidence that a DEGS homologue in Enterobacter clocae is important for colonization and disease suppression on cucumber -
Roberts, D.P., Lohrke, S.M., Mckenna, L.F., Lakshman, D.K. 2008. Evidence that a DEGS homologue in Enterobacter clocae is important for colonization and disease suppression on cucumber [abstract]. Microbial Ecology International Symposium.
Effects of cover cropping on soil and rhizosphere microbial community structure in tomato production systems -
Buyer, J.S., Zasada, I.A., Roberts, D.P., Teasdale, J.R. 2008. Effects of cover cropping on soil and rhizosphere microbial community structure in tomato production systems [abstract]. Microbial Ecology International Symposium. p. 51.
ISOLATION AND PARTIAL CHARACTERIZATION OF BACILLUS SUBTILIS ME488 FOR SUPPRESSION OF SOILBORNE PATHOGENS OF CUCUMBER AND PEPPER -
Chung, S., Kong, H., Buyer, J.S., Lakshman, D.K., Lydon, J., Kim, S., Roberts, D.P. 2008. Isolation and partial characterization of bacillus subtilis me488 for suppression of soilborne pathogens of cucumber and pepper. Applied Microbiology and Biotechnology. 80(1):115-23.
Metabolic behavior of bacterial biological control agents in soil and plant rhizospheres -
Pielach, C.A., Roberts, D.P., Kobayashi, D.Y. 2008. Metabolic behavior of bacterial biological control agents in soil and plant rhizospheres. Advances in Applied Microbiology. 65:199-215.
EFFECTS OF COVER CROPPING AND PLASTICULTURE ON SOIL AND RHIZOSPHERE MICROBIAL COMMUNITY STRUCTURE IN TOMATO PRODUCTION SYSTEMS -
Buyer, J.S., Roberts, D.P., Zasada, I.A., Teasdale, J.R. 2007. Effects of cover cropping and plasticulture on soil and rhizosphere microbial community structure in tomato production systems [abstract]. ASA-CSSA-SSSA Annual Meeting Abstracts.
ISOLATION AND IDENTIFICATION OF MYCOPARASITIC ISOLATES OF TRICHODERMA ASPERELLUM WITH POTENTIAL FOR SUPRESSION OF BLACK POD DISEASE OF CACAO IN CAMEROON -
Tondje, P., Roberts, D.P., Bon, M., Widmer, T., Samuels, G.J., Ismaiel, A.A., Begoude, A.D., Tchana, T., Nyemb-Tshomb, E., Ndoumbe-Nkeng, M., Bateman, R., Fontem, D., Hebbar, K.P. 2007. Isolation and identification of mycoparasitic isolates of trichoderma asperellum with potential for supression of black pod disease of cacao in cameroon. Biological Control. 43:202-212.
Isolation and identification of mycoparasitic isolates of Trichoderma asperellum with potential for suppression of black pod disease of cacao in Cameroon -
Tondje, P., Roberts, D.P., Bon, M., Widmer, T.L., Samuels, G.J., Ismaiel, A.A., Begoude, A., Tchana, T., Nyemb-Tshomb, E., Ndoumbe-Nkeng, M., Bateman, D., Fontem, D., Hebbar, K. 2007. Isolation and identification of mycoparasitic isolates of Trichoderma asperellum with potential for suppression of black pod disease of cacao in Cameroon. Biocontrol.
MUTATION IN A DEGS HOMOLOGUE IN ENTEROBACTER CLOACAE RESULTS IN DECREASED SEEDLING AND ROOT COLONIZATION BY THIS BACTERIUM -
Roberts, D.P., Lohrke, S.M., Lakshman, D.K., Mckenna, L.F. 2007. Mutation in a degs homologue in enterobacter cloacae results in decreased seedling and root colonization by this bacterium [abstract]. International Congress on Molecular Plant-Microbe Interactions.
Effects of RsmA on phytotoxin production by Pseudomonas syringae pathovars -
Kong, H., Patterson, C.D., Roberts, D.P., Heeb, S., Kuehne, S., Lydon, J. 2007. Effects of rsma on phytotoxin production by pseudomonas syringae pathovars [abstract]. American Society for Microbiology. p. 88.
Improved biocontrol of fruit decay fungi with Pichia pastoris recombinant strains expressing Psd1 antifungal peptide -
Janisiewicz, W.J., Pereira, I., Almeida, M.S., Roberts, D.P., Wisniewski, M.E., Kurtenbach, E. 2008. Improved biocontrol of fruit decay fungi with Pichia pastoris recombinant strains expressing Psd1 antifungal peptide. Postharvest Biology and Technology. 47:218-225.
Role of sdhA and pfkA and catabolism of reduced carbon during colonization of cucumber roots by Enterobacter cloacae -
Liu, S., Hu, X., Lohrke, S.M., Baker, C.J., Buyer, J.S., De Souza, J.T., Roberts, D.P. 2007. Role of sdhA and pfkA and catabolism of reduced carbon during colonization of cucumber roots by Enterobacter cloacae. Microbiology. 153:3197-3210.
SUPPRESSION OF DAMPING-OFF OF CUCUMBER CAUSED BY PYTHIUM ULTIMUM WITH LIVE CELLS AND EXTRACTS OF SERRATIA MARCESCENS N4-5 -
Roberts, D.P., Mckenna, L.F., Lakshman, D.K., Meyer, S.L., Kong, H.N., De Souza, J.T., Lydon, J., Baker, C.J., Buyer, J.S., Chung, S. 2007. Suppression of damping-off of cucumber caused by pythium ultimum with live cells and extracts of serratia marcescens n4-5. Soil Biology and Biochemistry. 39:2275-2288.
PYRUVATE DEHYDROGENASE ACTIVITY IS IMPORTANT FOR COLONIZATION OF SEEDS AND ROOTS BY ENTEROBACTER CLOACAE -
Roberts, D.P., Mckenna, L.F., Lohrke, S.M., Rehner, S.A., De Souza, J.T. 2007. Pyruvate dehydrogenase activity is important for colonization of seeds and roots by enterobacter cloacae. Soil Biology and Biochemistry. 39:2150-2159.
Interference by morpholine ethanesulfonic acid (MES) and related buffers in phenolic oxidation by peroxidase -
Baker, C.J., Mock, N.M., Roberts, D.P., Deahl, K.L., Hapeman, C.J., Schmidt, W.F., Kochansky, J.P. 2007. Interference by morpholine ethanesulfonic acid (MES) and related buffers in phenolic oxidation by peroxidase. Biochemical and Biophysical Research Communications. 43:1322-1327.
USE OF NATURAL PRODUCTS FOR SUPPRESSION OF SOILBORNE DISEASES OF CUCUMBER -
Roberts, D.P., Mckenna, L.F. 2006. Use of natural products for suppression of soilborne diseases of cucumber. International Conference on Methyl Bromide Alternatives and Emissions Reductions. Available: http://www.mbao.org/2006/06Proceedings/mbrpro06.html.
EFFECTS OF COVER CROPPING AND PLASTICULTURE ON SOIL AND RHIZOSPHERE MICROBIAL COMMUNITY STRUCTURE IN TOMATO PRODUCTION SYSTEMS -
Buyer, J.S., Roberts, D.P., Zasada, I.A., Teasdale, J.R. 2006. Effects of cover cropping and plasticulture on soil and rhizosphere microbial community structure in tomato production systems [abstract]. ASA-CSSA-SSSA Annual Meeting Abstracts.
MUTATION IN CYAA IN ENTEROBACTER CLOACAE DECREASES CUCUMBER ROOT COLONIZATION -
Roberts, D.P., Mckenna, L.F., Hu, X., Lohrke, S.M., Kong, H.N., De Souza, J.T., Baker, C.J., Lydon, J. 2006. Mutation in cyaa in enterobacter cloacae decreases cucumber root colonization. Archives Of Microbiology. 187:101-115.
PLANTAGO LANCEOLATA AND PLANTAGO RUGELII EXTRACTS ARE TOXIC TO MELOIDOGYNE INCOGNITA BUT NOT TO CERTAIN MICROBES -
Meyer, S.L., Zasada, I.A., Roberts, D.P., Vinyard, B.T., Lakshman, D.K., Lee, J., Chitwood, D.J., Carta, L.K. 2006. Plantago lanceolata and plantago rugelii extracts are toxic to meloidogyne incognita but not to certain microbes. Journal of Nematology 38(3):333-338.
INFLUENCE OF CATABOLIC CAPABILITIES OF ENTEROBACTER CLOACAE ON COLONIZATION OF CUCUMBER RHIZOSPHERE BY THIS BACTERIUM -
Roberts, D.P., Mckenna, L.F., Lohrke, S.M., Buyer, J.S., Liu, S., Hu, X., De Souza, J.T. 2006. Influence of catabolic capabilities of enterobacter cloacae on colonization of cucumber rhizosphere by this bacterium [abstract]. International Plant Growth Promoting Rhizobacteria Workshop.
BIOCONTROL ACTIVITY OF RECOMBINANT PICHIA PASTORIS CONSTITUTIVELY EXPRESSING PEA DEFENSIN AGAINST BLUE MOLD OF APPLE -
Janisiewicz, W.J., Pereira, I.B., Almeida, M.S., Roberts, D.P., Wisniewski, M.E., Kurtenbach, E. 2006. Biocontrol activity of recombinant Pichia pastoris constitutively expressing pea defensin against blue mold of apple. Phytopathology. 96:S53.
APOPLASTIC REDOX METABOLISM: SYNERGISTIC PHENOLIC OXIDATION -
Baker, C.J., Roberts, D.P., Whitaker, B.D., Mock, N.M., Deahl, K.L., Aver'Yanov, A.A. 2005. Apoplastic redox metabolism: synergistic phenolic oxidation and a novel oxidative burst. Physiological and Molecular Plant Pathology. 67:296-303.
FUNGAL AND PLANT GENE EXPRESSION DURING THE COLONIZATION OF THEOBROMA CACAO SEEDLINGS BY ISOLATES OF FOUR TRICHODERMA SPECIES -
Bailey, B.A., Bae, H., Strem, M.D., Roberts, D.P., Thomas, S.E., Samuels, G.J., Choi, I., Holmes, K.A. 2006. Fungal and plant gene expression during the colonization of theobroma cacao seedlings by isolates of four trichoderma species. Planta. 224(6):1449-1464.
PLANT-DERIVED COMPOUNDS ACTIVE AGAINST MELOIDOGYNE INCOGNITA -
Meyer, S.L., Zasada, I.A., Roberts, D.P., Vinyard, B.T., Lakshman, D.K., Lee, J.K., Chitwood, D.J., Carta, L.K. 2006. Plant-derived compounds active against meloidogyne incognita [abstract]. Journal of Nematology. 38:283.
MUTATION OF A CYAA HOMOLOGUE IN ENTEROBACTER CLOACAE RESULTS IN REDUCED COLONIZATION OF CUCUMBER SEEDLINGS AND ROOTS -
Roberts, D.P., Hu, X., Mckenna, L.F., Lohrke, S., Kong, H.N., Desouza, J.T., Lydon, J. 2006. Mutation of a cyaa homologue in enterobacter cloacae results in reduced colonization of cucumber seedlings and roots [abstract]. International Union of Microbiological Societies Proceedings/Abstracts.
BIOLOGICALLY BASED TECHNOLOGIES FOR THE SUPPRESSION OF SOILBORNE PATHOGENS OF VEGETABLES -
Roberts, D.P., Abdul Baki, A.A., Zasada, I.A., Meyer, S.L., Waldy, K. 2005. Biologically based technologies for the suppression of soilborne pathogens of vegetables. Review Article. Recent Res. Develop. Applied Microbiol. Biotechnol. 2:51-67.
DIFFERENTIAL INDUCTION OF EXTRACELLULAR BIOACTIVE PHENOLICS THAT ARE REDOX SENSITIVE -
Baker, C.J., Whitaker, B.D., Mock, N.M., Rice, C., Deahl, K.L., Roberts, D.P., Ueng, P.P., Averyanov, A.A. 2005. Differential induction of extracellular bioactive phenolics that are redox sensitive. Physiological and Molecular Plant Pathology. 66:90-98.
EFFECTS OF N-VIRO SOIL(TM), CALCIUM HYDROXIDE, AND A STREPTOMYCES SP. ON MELOIDOGYNE INCOGNITA POPULATIONS ON CANTALOUPE -
Meyer, S.L., Zasada, I.A., Tenuta, M., Roberts, D.P. 2005. Effects of n-viro soil(tm), calcium hydroxide, and a streptomyces sp. on meloidogyne incognita populations on cantaloupe. Phytopathology (Supplement). 95:S70.
APPLICATION OF A BIOSOLID SOIL AMENDMENT, CALCIUM HYDROXIDE, AND STREPTOMYCES SP. FOR MANAGEMENT OF ROOT-KNOT NEMATODE ON CANTALOUPE -
Meyer, S.L., Zasada, I.A., Tenuta, M., Roberts, D.P. 2005. Application of a biosolid soil amendment, calcium hydroxide, and streptomyces sp. for management of root-knot nematode on cantaloupe. Hortechnology 15(3): 635-641.
DECREASED INCIDENCE OF DISEASE CAUSED BY SCLEROTINIA SCLEROTIORUM AND IMPROVED PLANT VIGOR OF OILSEED RAPE WITH BACILLUS SUBTILIS TU-100 -
Hu, X., Roberts, D.P., Jiang, M., Zhang, Y. 2005. Decreased incidence of disease caused by Sclerotinia sclerotiorum and improved plant vigor of oilseed rape with Bacillus subtilis Tu-100. Applied Microbiology and Biotechnology. 68:802-807.
INVOLVEMENT OF ACETOSYRINGONE IN PLANT/PATHOGEN RECOGNITION -
Baker, C.J., Mock, N.M., Whitaker, B.D., Roberts, D.P., Rice, C., Deahl, K.L., Averyanov, A.A. 2005. Involvement of Acetosyringone in plant/pathogen recognition. Biochemical and Biophysical Research Communications. 328:130-136.
BIOCONTROL AGENTS APPLIED INDIVIDUALLY AND IN COMBINATION FOR SUPPRESSION OF SOILBORNE DISEASES OF CUCUMBER -
Roberts, D.P., Lohrke, S.M., Meyer, S.L., Buyer, J.S., Bowers, J.H., Baker, C.J., Li, W., Desouza, J., Lewis, J.A., Chung, S. 2005. Biocontrol agents applied individually and in combination for suppression of soilborne diseases of cucumber. Crop Protection. 24:135-141.
STIMULATORY EFFECT OF ACETOSYRINGONE ON PLANT/PATHOGEN RECOGNITION -
Baker, C.J., Whitaker, B.D., Mock, N.M., Rice, C., Roberts, D.P., Deahl, K.L., Averyanov, A.A. 2004. Stimulatory effect of acetosyringone on plant/pathogen recognition. Free Radical Biology and Medicine.
USE OF A LUXGFP BIOREPORTER SYSTEM TO DETERMINE METABOLIC ACTIVITY OF AN ANTAGONIST IN FRUIT WOUNDS -
Janisiewicz, W.J., Bassett, C.L., Wisniewski, M.E., Conway, W.S., Roberts, D.P. Use of a luxgfp bioreporter system to determine metabolic activity of an antagonist in fruit wounds. American Phytopathological Society Abstracts.Abstract to be presented at Annual Meeting of the American Phytopathological Society, July 31 - August 4, 2004 in Anaheim, CA.
INDUCTION OF REDOX SENSITIVE EXTRACELLULAR PHENOLICS DURING PLANT-BACTERIAL INTERACTIONS -
Baker, C.J., Whitaker, B.D., Mock, N.M., Rice, C., Roberts, D.P., Deahl, K.L., Averyanov, A.A. 2005. Induction of redox sensitive extracellular phenolics during plant-bacterial interactions. Physiological and Molecular Plant Pathology. 66:90-98.
METABOLIC ACTIVITY OF ENTEROBACTER CLOACAE IN CUCUMBER AND PEA SPERMOSPHERE -
A NOVEL NONINVASIVE TECHNIQUE TO MONITOR REAL-TIME OXYGEN UPTAKE DURING SEED GERMINATION -
Baker, C.J., Roberts, D.P., Mock, N.M., Blount, V.L. 2004. A novel noninvasive technique to monitor real-time oxygen uptake during seed germination. Seed Science Research. 14:17-26.
INCREASED INCIDENCE OF ERWINIA SOFT-ROT ON CALLA LILIES IN THE PRESENCE OF PHOSPHORUS -
Gracia-Garza, J.A., Blom, T.J., Brown, W., Roberts, D.P., Schneider, K., Freisen, M., Gombert, D. 2004. Increased incidence of erwinia soft-rot on calla lilies in the presence of phosphorus. European Journal of Plant Pathology. 110:293-298.
MUTATION OF A DEGS HOMOLOG IN ENTEROBACTER CLOACAE DECREASES SEED AND ROOT COLONIZATION BUT DOES NOT AFFECT BIOCONTROL OF DAMPING-OFF CAUSED BY PYTHIUM ULTIMUM ON CUCUMBER -
COLONIZATION OF SUBTERRANEAN PLANT SURFACES AND SUPPRESSION OF SOILBORNE PLANT PATHOGENS: STUDIES WITH ENTEROBACTER CLOACAE -
Roberts, D.P., Lohrke, S.M., Buyer, J.S., Baker, C.J., Liu, S. 2003. Colonization of subterranean plant surfaces and suppression of soilborne plant pathogens: Studies with Enterobacter cloacae. Recent Research in Develop. Microbiology. 7:161-174.
RHIZOSPHERE COLONIZATION OF OILSEED RAPE BY PSEUDOMONAS ALCALIGENES A9(LACZ) -
Hu, X., Liu, S., Roberts, D.P. 2002. Rhizosphere colonization of oilseed rape by pseudomonas alcaligenes a9(lacz). Chinese Journal of Oil Crops Sciences. 24:54-56.
A NOVEL TECHNIQUE TO MONITOR OXYGEN CONSUMPTION DURING EARLY STAGES OF SEED GERMINATION -
SOIL AND PLANT EFFECTS ON MICROBIAL COMMUNITY STRUCTURE -
BUYER, J.S., ROBERTS, D.P., RUSSEK-COHEN, E. SOIL AND PLANT EFFECTS ON MICROBIAL COMMUNITY STRUCTURE. CANADIAN JOURNAL OF MICROBIOLOGY. 48:955-964. 2002.
AHL-DEFICIENT MUTANTS OF BURKHOLDERIA AMBIFARIA BC-F HAVE DECREASED ANTIFUNGAL ACTIVITY -
Zhou, H., Yao, F., Roberts, D.P., Lessie, T.G. 2003. Ahl-deficient mutants of burkholderia ambifaria bc-f have decreased antifungal activity. Current Microbiology. 47:174-179.
ARS RESEARCH PROGRAMS IN BIOLOGICAL CONTROL OF PLANT DISEASES -
ROBERTS, D.P., LOHRKE, S.M. ARS RESEARCH PROGRAMS IN BIOLOGICAL CONTROL OF PLANT DISEASES. PEST MANAGEMENT SCIENCE. 59:654-664. 2003.
CURRENT RESEARCH IN BIOLOGICAL CONTROL OF PLANT DISEASES -
ROBERTS, D.P., LOHRKE, S.M., CHUNG, S. CURRENT RESEARCH IN BIOLOGICAL CONTROL OF PLANT DISEASES. Korean Monthly Agriculture and Horticulture. 2002.
MICROBIAL COMMUNITY STRUCTURE AND THE RHIZOSPHERE EFFECT -
BUYER, J.S., BLACKWOOD, C.B., ROBERTS, D.P., PAUL, E.A. MICROBIAL COMMUNITY STRUCTURE AND THE RHIZOSPHERE EFFECT. AGRONOMY ABSTRACTS. 2002. S03-buyer 123344-Poster.
MUTATION IN AN SDHA HOMOLOGUE IN ENTEROBACTER CLOACAE RESULTS IN REDUCED COLONIZATION BUT DOES NOT AFFECT BIOCONTROL OF DAMPING OFF ON CUCUMBER -
MUTATION IN AN CYAA HOMOLOGUE IN ENTEROBACTER CLOACAE RESULTS IN REDUCED COLONIZATION BUT DOES NOT AFFECT DAMPING-OFF ON CUCUMBER -
DETECTION OF ROOT-ASSOCIATED MICROBES THAT PRODUCE COMPOUNDS ACTIVE AGAINST PLANT-PARASITIC NEMATODES -
Meyer, S.L., Roberts, D.P., Nitao, J.K., Chitwood, D.J. Detection of root-associated microbes that produce compounds active against plant-parasitic nematodes. 2002. Phytopathology 92(suppl): S55-S56.
MUTATION IN THE SDHA HOMOLOGUE IN ENTEROBACTER CLOACAE RESULTS IN COLONIZATION OF CUCUMBER ROOTS BUT DOES NOT AFFECT BIOCONTROL OF DAMPING-OFF ON CUCUMBER CAUSED BY PYTHIUM ULTIMUM -
MUTATION IN RPIA HOMOLOGUE IN ENTEROBACTER CLOACAE DECREASES COLONIZATION AND BIOCONTROL OF DAMPING-OFF BY PYTHIUM ULTIMUM -
ANALYSIS OF MUTANT DERIVATIVES OF BURKHOLDERIA AMBIFARIA AND B. MULTIMORANS ALTERED WITH RESPECT TO FORMATION OF N-ACYL HOMOSERINE LACTONES -
EXAMINATION OF RHIZOSPHERE-ASSOCIATED MICROBES FOR PRODUCTION OF COMPOUNDS ACTIVE AGAINST PLANT-PARASITIC NEMATODES -
Meyer, S.L., Roberts, D.P., Nitao, J.K., Chitwood, D.J. 2002. Examination of rhizosphere-associated microbes for production of compounds active against plant-parasitic nematodes. 2002. Nematology 4: 288.
BIOLOGICAL CONTROL FOR CONTROL OF SOILBORNE PATHOGENS -
Chung, S., Roberts, D.P. 2002. Biological control for control of soilborne pathogens. Korean Monthly Agriculture and Horticulture. March, 2002.
FIELD EVALUATION OF SELECTED BACTERIAL ISOLATES AND SEED TREATMENT FUNGICIDES FOR THE CONTROL OF TAKE-ALL IN ROANE SOFT RED WINTER WHEAT IN VIRGINIA, 2001 -
PRODUCTION OF EXTRACELLULAR PHENOLIC ANTIOXIDANTS PROVIDES A BUFFER AGAINST LOW-LEVEL BUILDUP OF ROS IN PLANTS -
BIOCONTROL OF SEEDLING PATHOGENS AND ROOT-KNOT ON VEGETABLES -
COMBINATIONS OF BIOCONTROL AGENTS FOR MANAGEMENT OF PLANT-PARASITIC NEMATODES AND SOILBORNE PLANT-PATHOGENIC FUNGI -
Meyer, S.L., Roberts, D.P. 2002. Combinations of biocontrol agents for management of plant-parasitic nematodes and soilborne plant-pathogenic fungi. Journal of Nematology 34: 1-8.
INCREASED SEVERITY OF ERWINA SOFT ROT ON CALLAS IN THE PRESENCE OF PHOSPHATE -
BIOCONTROL OF ROOT-KNOT NEMATODE ON PEPPER -
MUTATION IN AN RPIAHOMOLOGUE IN ENTEROBACTER CLOACAE AFFECTS CUCUMBER SEED COLONIZATION AND BIOCONTROL OF DAMPING OFF ON CUCUMBER CAUSED BY PYTHIUM ULTIMUM -
BROAD SPECTRUM ANTI-BIOTIC ACTIVITY AND DISEASE SUPPRESSION BY THE POTENTIAL BIOCONTROL AGEN BURKHOLDERIA AMBIFARIA BC-F -
Li, W., Roberts, D.P., Dery, P.D., Meyer, S.L., Lohrke, S.M., Lumsden, R.D., Hebbar, K.P. 2002. Broad spectrum anti-biotic activity and disease suppression by the potential biocontrol agen burkholderia ambifaria BC-F. Crop Protection. 21:129-135.
IDENTIFICATION OF A LOCUS IN ENTEROBACTER CLOACAE IMPORTANT FOR SEED COLONIZATION AND BIOCONTROL OF DAMPING-OFF IN CUCUMBER -
FIELD EVALUATION OF SELECTED BACTERIAL ISOLATES AND SEED TREATMENT FUNGICIDES FOR THE CONTROL OF TAKE-ALL IN MADISON SOFT RED WINTER WHEAT, 2000 -
APPLICATION OF BURKHOLDERIA CEPACIA AND TRICHODERMA VIRENS, ALONE AND IN COMBINATIONS, AGAINST MELOIDOGYNE INCOGNITA ON BELL PEPPER -
APPLICATION OF BURKHOLDERIA CEPACIA AND TRICHODERMA VIRENS, ALONE AND IN COMBINATIONS, AGAINST MELOIDOIGYNE INCOGNITA ON BELL PEPPER -
ANALYSIS OF FUNGAL COMMUNITIES BY SOLE CARBON SOURCE UTILIZATION PROFILES -
TOTAL CATABOLIC CAPABILITIES OF ENTEROBACTER CLOACAE ARE NOT REQUIRED FOR BENEFICIAL ACTIVITIES OF THIS BACTERIUM IN THE SPERMOSPHERE -
CHARACTERIZING THE OXYGEN UPTAKE RESPONSE DURING PLANT/BACTERIA RECOGNITION -
EFFECT OF DECREASED CATABOLIC CAPABILITY OF ENTEROBACTER CLOACAE STRAIN A-11 ON ROOT COLONIZATION AND SUPPRESSION OF DAMPING-OFF OF CUCUMBER CAUSED BY PYHTIUM ULTIMUM -
EVALUATION OF TRICHODERMA VIRENS AND BURKHOLDERIA CEPACIA FOR ANATGONISTIC ACTIVITY AGAINST ROOT-KNOT NEMATODE, MELOIDOGYNE INCOGNITA -
EFFECT OF DECREASED CATABOLIC CAPABILITY OF ENTEROBACTER CLOACAE STRAIN A-11 ON ROOT COLONIZATION AND SUPPRESSION OF DAMPING-OFF CAUSED BY PYTHIUM ULTIMUM ON CUCUMBER -
LYSIS OF PLANT PATHOGENIC FUNGI AND BIOCONTROL -
WHEAT (TRITICUM AESTIVUM CV MADISON) TAKE-ALL, GUEUMANNOMYCES GRAMINIS VAR TRITICI -
ASSOCIATION OF THE PLANT-BENEFICIAL FUNGUS VERTICILLIUM LECANII WITH SOYBEAN ROOTS AND RHIZOSPHERE -
ROLE OF THE PFKA GENE OF ENTEROBACTER CLOACAE IN COLONIZATION OF RADISH, SOYBEAN, SUNFLOWER AND SWEET CORN SEEDS -
SEEDLING DISEASES -
NEMATODE-ANTAGONISTIC ACTIVITY OF GLIOCLADIUM VIRENS AND BURKHOLDERIA CEPACIA -
EFFECT OF N SOURCE ON ROOT EXUDATES AND YIELD OF EGGPLANTS GROWN IN VERTICILLIUM INFESTED SOIL -
BIOLOGICAL DISEASE CONTROL: CONSIDERATIONS FOR SEED TREATMENTS AND STAND ESTABLISHMNENT -
CHARACTERISTICS OF THE CUCUMBER SEED COLONIZATION MUTANT ENTEROBACTER CLOACAE A-11 -
THE TOTAL CATABOLIC CAPABILITIES OF ENTEROBACTER CLOACAE ARE NOT REQUIRED FOR SUPPRESSION OF DAMPING-OFF OF CUCUMBER CAUSED BY PYTHIUM ULTIMUM -
BIOLOGICAL DISEASE CONTROL: CONSIDERATIONS FOR SEED TREATMENT AND STAND ESTABLISHMENT -
FIELD EVALUATION OF SELECTED BACTERIAL ISOLATES AND SEED TREATMENT FUNGICIDES FOR THE CONTROL OF TAKE-ALL IN JACKSON SOFT RED WINTER WHEAT, 1998 -
ISOLATION OF A MUTANT OF ENTEROBACTER CLOACAE REDUCED IN COLONIZATION AND IN BIOCONTROL -
USDA, ARS, BELTSVILLE AREA PROGRAMS DIRECTED AT DEVELOPMENT OF METHYL BROMIDE ALTERNATIVES FOR PRE-PLANT APPLICATIONS -
USDA, ARS, BELTSVILLE AREA PROGRAMS DIRECTED AT DEVELOPMENT OF METHYL BROMIDE ALTERNATIVES FOR PRE-PLANT APPLICATIONS -
USE OF COLONIZATION-IMPAIRED STRAIN OF ENTEROBACTER CLOACAE IN BIOCONTROL OF PYTHIUM ULTIMUM DAMPING-OFF OF CUCUMBER AND IN SEED TREATMENTS CONTAINING COMBINATIONS OF BIOCONTROL AGENTS. -
SPATIAL ANALYSIS OF ENTEROBACTER CLOACAE IN CUCUMBER RHIZOSPHERE USING DIGITAL IMAGE PROCESSING -
SPATIAL AND TEMPORAL INTERACTIONS OF VERTICILLIUM LECANII WITH HETERODERA GLYCINES AND WITH SOYBEAN ROOTS -
BIOLOGICAL CONTROL OF FUNGAL DISEASES -
GENETIC ANALYSIS OF THE SEED COLONIZATION MUTANT ENTEROBACTER CLOACAE A-11 -
POPULATION DYMANICS OF THE CARBOHYDRATE-UTILIZATION-MUTANT NTEROBACTER CLOACAE A-11 AND SEED EXUDATION -
RHIZOSPHERE ACTIVITY OF THE NEMATODE-ANTAGONISTIC FUNGUS VERTICILLIUM LECANII -
EFFECT OF SCLEROTIAL DAMAGE OF SCLEROTINIA SCLEROTIORUM ON THE MYCOPARASITIC ACTIVITY OF TRICHODERMA HAMATUM -
USE OF A COLONIZATION-DEFICIENT STRAIN OF ENTEROBACTER CLOACAE IN STRAIN COMBINATIONS FOR ENHANCED BIOCONTROL OF CUCUMBER SEEDLING DISEASES -
BIOLOGICAL CONTROL OF DAMPING-OFF OF CUCUMBER CAUSED BY PYTHIUM ULTIMUM WITH A ROOT-COLONIZATION-DEFICIENT STRAIN OF ENTEROBACTER CLOACAE -
BEHAVIOR OF BIOCONTROL BACTERIA IN THE SPERMOSPHERE AND RHIZOSPHERE -
POPULATION DYNAMICS OF THE BIOCONTROL AGENT ENTEROBACTER CLOACAE 501R3 AND THE CARBOHYDRATE-UTILIZATION MUTANT A-11 IN VARIOUS SPERMOSPHERES -
IN VITRO ANALYSIS OF THE ROLE OF GLUCOSE OXIDASE FROM TALAROMYCES FLAVUS INBIOCONTROL OF THE PLANT PATHOGEN VERTICILLIUM DAHLIAE -
GENETIC APPROACHES FOR ANALYSIS AND MANIPULATION OF RHIZOSPHERE COLONIZATION BY BACTERIAL BIOCONTROL AGENTS -
PEPTIDE UTILIZATION AND PROLIFERATION IN CORN, RADISH, AND WHEAT SPERMOSPHERE BY ENTEROBACTER CLOACAE -
POTENTIAL USES FOR GENETICALLY-MODIFIED, COLONIZATION-DEFICIENT PLANT-BENEFICIAL BACTERIA IN BIOLOGICAL CONTROL OF SOILBORNE PLANT PATHOGENS -
Last Modified: 8/26/2016
Footer Content Back to Top of Page