Index Catalog // ScholarsArchive@OSU

Creator:: Lim, Chee Kent, Penesyan, Anahit, Hassan, Karl A., Loper, Joyce E., and Paulsen, Ian T.
Abstract:: Tannins are a diverse group of plant-produced, polyphenolic compounds with metal-chelating and antimicrobial properties that are prevalent in many soils. Using transcriptomics, we determined that tannic acid, a form of hydrolysable tannin, broadly affects the expression of genes involved in iron and zinc homeostases, sulfur metabolism, biofilm formation, motility, and...
Resource Type:: Article
Full Text:: Bacterium Pseudomonas protegens Pf-5 Chee Kent Lim,a* Anahit Penesyan,a Karl A. Hassan,a Joyce E. Loper,b

Creator:: Yan, Qing, Philmus, Benjamin, Hesse, Cedar, Kohen, Max, Chang, Jeff H., and Loper, Joyce E.
Abstract:: The soil bacterium Pseudomonas protegens Pf-5 can colonize root and seed surfaces of many plants, protecting them from infection by plant pathogenic fungi and oomycetes. The capacity to suppress disease is attributed to Pf-5's production of a large spectrum of antibiotics, which is controlled by complex regulatory circuits operating at...
Full Text:: *Correspondence: Joyce E. Loper loperj@science.oregonstate.edu Specialty section: This article was submitted

Creator:: Cheng, Xu, de Bruijn, Irene, van der Voort, Menno, Loper, Joyce E., and Raaijmakers, Jos M.
Abstract:: Transcriptome analysis of Pseudomonas fluorescensSBW25 showed that 702 genes were differentially regulated in a gacS::Tn5 mutant, with 300 and 402 genes up- and downregulated respectively. Similar to the Gac regulon of other Pseudomonas species, genes involved in motility, biofilm formation, siderophore biosynthesis and oxidative stress were differentially regulated in the...
Resource Type:: Article
Full Text:: regulon of Pseudomonas fluorescens SBW25 Xu Cheng,1† Irene de Bruijn,1† Menno van der Voort,1† Joyce E

Creator:: Lim, Chee Kent, Hassan, Karl A., Penesyan, Anahit, Loper, Joyce E., and Paulsen, Ian T.
Abstract:: Zinc is an important nutrient but can be lacking in some soil environments, influencing the physiology of soil-dwelling bacteria. Hence, we studied the global effect of zinc limitation on the transcriptome of the rhizosphere biocontrol strain Pseudomonas protegens Pf-5 (formerly Pseudomonas fluorescens). We observed that the expression of the putative...
Resource Type:: Article
Full Text:: Chee Kent Lim,1 Karl A. Hassan,1 Anahit Penesyan,1 Joyce E. Loper2 and Ian T. Paulsen1* 1Department of

Creator:: Lim, Chee Kent, Hassan, Karl A., Tetu, Sasha G., Loper, Joyce E., and Paulsen, Ian T.
Abstract:: One of the most important micronutrients for bacterial growth is iron, whose bioavailability in soil is limited. Consequently, rhizospheric bacteria such as Pseudomonas fluorescens employ a range of mechanisms to acquire or compete for iron. We investigated the transcriptomic and proteomic effects of iron limitation on P. fluorescens Pf-5 by...
Resource Type:: Article
Full Text:: , Joyce E. Loper2, Ian T. Paulsen1* 1 Department of Chemistry and Biomolecular Sciences, Macquarie

Creator:: Yan, Qing, Philmus, Benjamin, Hesse, Cedar, Kohen, Max, Chang, Jeff H., and Loper, Joyce E.
Abstract:: The soil bacterium Pseudomonas protegens Pf-5 can colonize root and seed surfaces of many plants, protecting them from infection by plant pathogenic fungi and oomycetes. The capacity to suppress disease is attributed to Pf-5's production of a large spectrum of antibiotics, which is controlled by complex regulatory circuits operating at...

Creator:: Yan, Qing, Philmus, Benjamin, Hesse, Cedar, Kohen, Max, Chang, Jeff H., and Loper, Joyce E.
Abstract:: The soil bacterium Pseudomonas protegens Pf-5 can colonize root and seed surfaces of many plants, protecting them from infection by plant pathogenic fungi and oomycetes. The capacity to suppress disease is attributed to Pf-5's production of a large spectrum of antibiotics, which is controlled by complex regulatory circuits operating at...

Creator:: Yan, Qing, Philmus, Benjamin, Hesse, Cedar, Kohen, Max, Chang, Jeff H., and Loper, Joyce E.
Abstract:: The soil bacterium Pseudomonas protegens Pf-5 can colonize root and seed surfaces of many plants, protecting them from infection by plant pathogenic fungi and oomycetes. The capacity to suppress disease is attributed to Pf-5's production of a large spectrum of antibiotics, which is controlled by complex regulatory circuits operating at...
Resource Type:: Article

Creator:: Quecine, Maria Carolina, Kidarsa, Teresa A., Goebel, Neal C., Shaffer, Brenda T., Henkels, Marcella D., Zabriskie, T. Mark, and Loper, Joyce E.
Abstract:: Pseudomonas protegens strain Pf-5 is a rhizosphere bacterium that suppresses soilborne plant diseases and produces at least seven different secondary metabolites with antifungal properties. We derived mutants of Pf-5 with single and multiple mutations in biosynthesis genes for seven antifungal metabolites: 2,4-diacetylphoroglucinol (DAPG), pyrrolnitrin, pyoluteorin, hydrogen cyanide, rhizoxin, orfamide A,...
Full Text:: , Neal C. Goebel, Brenda T. Shaffer, Marcella D. Henkels, T. Mark Zabriskie, and Joyce E. Loper

Creator:: Quecine, Maria Carolina, Kidarsa, Teresa A., Goebel, Neal C., Shaffer, Brenda T., Henkels, Marcella D., Zabriskie, T. Mark, and Loper, Joyce E.
Abstract:: Pseudomonas protegens strain Pf-5 is a rhizosphere bacterium that suppresses soilborne plant diseases and produces at least seven different secondary metabolites with antifungal properties. We derived mutants of Pf-5 with single and multiple mutations in biosynthesis genes for seven antifungal metabolites: 2,4-diacetylphoroglucinol (DAPG), pyrrolnitrin, pyoluteorin, hydrogen cyanide, rhizoxin, orfamide A,...
Full Text:: Zabriskie,c Joyce E. Loperb,d Department of Genetics, College of Agriculture Luiz de Queiroz, ESALQ

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