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Genomes and Genes | David M WellerSummaryAffiliation: Washington State University Country: USA Publications
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Publications
Microbial populations responsible for specific soil suppressiveness to plant pathogensDavid M Weller
USDA, Agricultural Research Service, Root Disease and Biological Control Research Unit, Washington State University, Pullman 99164 6430, USA
Annu Rev Phytopathol 40:309-48. 2002..By coupling molecular technologies with traditional approaches used in plant pathology and microbiology, it is possible to dissect the microbial composition and complex interactions in suppressive soils...
Diversity and evolution of the phenazine biosynthesis pathwayDmitri V Mavrodi
Department of Plant Pathology, Washington State University, Pullman, WA 99164 6430, USA
Appl Environ Microbiol 76:866-79. 2010....- Quantification of 2,4-diacetylphloroglucinol-producing Pseudomonas fluorescens strains in the plant rhizosphere by real-time PCROlga V Mavrodi
Department of Plant Pathology, Washington State University, Pullman, Washington 99164 6430, USA
Appl Environ Microbiol 73:5531-8. 2007..The greatest advantage of the developed real-time PCR is culture independence, which allows determination of population densities and the genotype composition of 2,4-DAPG producers directly from the plant rhizospheres and soil... - Accumulation of the antibiotic phenazine-1-carboxylic acid in the rhizosphere of dryland cerealsDmitri V Mavrodi
Department of Plant Pathology, Washington State University, Pullman, Washington, USA
Appl Environ Microbiol 78:804-12. 2012..Our results strongly suggest that natural antibiotics can transiently accumulate in the plant rhizosphere in amounts sufficient not only for inter- and intraspecies signaling but also for the direct inhibition of sensitive organisms... - Role of ptsP, orfT, and sss recombinase genes in root colonization by Pseudomonas fluorescens Q8r1-96Olga V Mavrodi
Department of Plant Pathology, Washington State University, Pullman, WA 99164-6430, USA
Appl Environ Microbiol 72:7111-22. 2006..However, all three mutants were less competitive than wild-type P. fluorescens Q8r1-96 in the wheat rhizosphere when they were introduced into the soil by paired inoculation with the parental strain... - Irrigation differentially impacts populations of indigenous antibiotic-producing pseudomonas spp. in the rhizosphere of wheatOlga V Mavrodi
Department of Plant Pathology, Washington State University, Pullman, Washington, USA
Appl Environ Microbiol 78:3214-20. 2012..These results demonstrate how crop management practices can influence indigenous populations of antibiotic-producing pseudomonads with the capacity to suppress soilborne diseases of wheat... - Structural and functional analysis of the type III secretion system from Pseudomonas fluorescens Q8r1-96Dmitri V Mavrodi
Department of Plant Pathology, Washington State University, Pullman, Washington 99164 6430, USA
J Bacteriol 193:177-89. 2011..The Q8r1-96 type III effectors RopAA, RopB, and RopM were capable of suppressing the hypersensitive response and production of reactive oxygen species, two plant immune responses... 
Isolation, characterization, and sensitivity to 2,4-diacetylphloroglucinol of isolates of Phialophora spp. from Washington wheat fieldsYoun Sig Kwak
Department of Plant Pathology, Washington State University, Pullman, WA 99164 6430, USA
Phytopathology 100:404-14. 2010..tritici. To our knowledge, this study provides the first report of an avenacinase-like gene in Phialophora spp. and demonstrated that the fungus is significantly less sensitive to 2,4-DAPG than G. graminis var. tritici...- Population structure and diversity of phenazine-1-carboxylic acid producing fluorescent Pseudomonas spp. from dryland cereal fields of central Washington State (USA)James A Parejko
School of Molecular Biosciences, Washington State University, Pullman, WA 99164 4234, USA
Microb Ecol 64:226-41. 2012..In summary, this study revealed a genotypically and phenotypically diverse group of phenazine producers with a population structure not seen before in indigenous rhizosphere-inhabiting Phz(+) Pseudomonas spp... - phlD-based genetic diversity and detection of genotypes of 2,4-diacetylphloroglucinol-producing Pseudomonas fluorescensLeonardo De La Fuente
Department of Plant Pathology, Washington State University, Pullman, WA, USA
FEMS Microbiol Ecol 56:64-78. 2006..The allele-specific primer-based technique is a rapid method for studies of the interactions between genotypes of 2,4-diacetylphloroglucinol producers in natural environments... - Enrichment and genotypic diversity of phlD-containing fluorescent Pseudomonas spp. in two soils after a century of wheat and flax monocultureBlanca B Landa
Department of Plant Pathology, Washington State University, Pullman, WA 99164-6430, USA
FEMS Microbiol Ecol 55:351-68. 2006.... - Recent insights into the diversity, frequency and ecological roles of phenazines in fluorescent Pseudomonas sppDmitri V Mavrodi
Department of Plant Pathology, Washington State University, Pullman, WA 99164 6430, USA
Environ Microbiol 15:675-86. 2013..This minireview highlights some recent and exciting insights into the diversity, frequency and ecological roles of phenazines produced by fluorescent Pseudomonas spp... - Saccharomyces cerevisiae genome-wide mutant screen for sensitivity to 2,4-diacetylphloroglucinol, an antibiotic produced by Pseudomonas fluorescensYoun Sig Kwak
P O Box 646430, 367 Johnson Hall, Washington State University, Pullman, WA 99164 6430, USA
Appl Environ Microbiol 77:1770-6. 2011..Collectively, these findings indicate that 2,4-DAPG acts on multiple basic cellular processes... - Diversity, virulence, and 2,4-diacetylphloroglucinol sensitivity of Gaeumannomyces graminis var. tritici isolates from Washington stateYoun Sig Kwak
Department of Plant Pathology, Washington State University, Pullman, WA 99164 6430, USA
Phytopathology 99:472-9. 2009..These results indicate that G. graminis var. tritici does not become less sensitive to 2,4-DAPG during extended wheat monoculture... - The role of dsbA in colonization of the wheat rhizosphere by Pseudomonas fluorescens Q8r1-96Olga V Mavrodi
Department of Plant Pathology, Washington State University, Pullman, WA, USA
Microbiology 152:863-72. 2006..The results also suggest that exoenzymes and multimeric cell surface structures are unlikely to have a critical role in root colonization by this strain... - Induced systemic resistance in arabidopsis thaliana against Pseudomonas syringae pv. tomato by 2,4-diacetylphloroglucinol-producing Pseudomonas fluorescensDavid M Weller
United States Department of Agriculture Agricultural Research Service, Root Disease and Biological Control Research Unit, Pullman, WA 99164 6430, USA
Phytopathology 102:403-12. 2012..fluorescens, that the genotype of the strain does not affect its ISR activity, and that the activity induced by these bacteria operates through the ethylene- and jasmonic acid-dependent signal transduction pathway... - Differential ability of genotypes of 2,4-diacetylphloroglucinol-producing Pseudomonas fluorescens strains to colonize the roots of pea plantsBlanca B Landa
Root Disease and Biological Control Research Unit, Agricultural Research Service, U.S. Department of Agriculture, Pullman, WA 99164-6430, USA
Appl Environ Microbiol 68:3226-37. 2002..Genetic profiles generated by rep-PCR or restriction fragment length polymorphism analysis of the 2,4-DAPG biosynthetic gene phlD were predictive of the rhizosphere competence of the introduced 2,4-DAPG-producing strains... - Identification and manipulation of soil properties to improve the biological control performance of phenazine-producing Pseudomonas fluorescensBonnie H Ownley
Department of Entomology and Plant Pathology, The University of Tennessee, Knoxville, Tennessee 37996, USA
Appl Environ Microbiol 69:3333-43. 2003..We then investigated the negative correlation of OM with disease suppression and found that addition of OM (as wheat straw) at rates typical of high-OM soils significantly reduced biocontrol activity of 2-79RN(10)...