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Showing 1 to 13 of 13 for “"Pantoea stewartii"”.
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Investigation of the quorum-sensing regulon in the corn pathogen Pantoea stewartii
Pantoea stewartii subsp. stewartii is a bacterium that causes Stewart’s wilt disease in corn plants. The bacteria are transmitted to the plants via an insect vector, the corn flea beetle Chaetocnema pulicaria. Once in the plant, the bacteria migrate to the xylem and grow to high cell densities, …
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Development of Methods for Structural Characterization of Pantoea stewartii Quorum-Sensing Regulator EsaR
… It controls virulence in the corn pathogen Pantoea stewartii ssp. stewartii. Solubility issues have previously limited structural studies of LuxR homologues as the proteins could not be purified without the AHL ligand. A soluble recombinant EsaR protein, HMGE, is biologically active and can …
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Structure/Function Analysis of the Quorum-sensing Regulator EsaR from the Plant Pathogen Pantoea stewartii
Pantoea stewartii subsp. stewarti is the causative agent of Stewart's wilt disease in maize. Disease symptoms develop after the bacteria grow to high cell densities in the plant xylem and secrete an abundance of exopolysaccharide (EPS). EPS production is regulated by quorum sensing. Two regulatory …
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Analysis of the Quorum Sensing Regulons of Vibrio parahaemolyticus BB22 and Pantoea stewartii subspecies stewartii
… dissertation work, Vibrio parahaemolyticus and Pantoea stewartii subsp. stewartii. V. parahaemolyticus causes acute gastroenteritis in people who eat contaminated raw or undercooked shellfish. It is found in warmer marine waters and in rare cases, causes systemic infections when bacteria enter …
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Investigation of Pantoea stewartii Quorum-Sensing Controlled Regulators and Genes Important for Infection of Corn
… to detrimental. This dissertation focuses on Pantoea stewartii subspecies stewartii (P. stewartii), an endosymbiont in the corn flea beetle gut that causes Stewart's wilt disease in corn. Gaining insights into the interactions occurring between this bacterial pathogen and its plant host may …
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The in planta role of the global regulator Lrp in the bacterial phytopathogen Pantoea stewartii subsp. stewartii
Pantoea stewartii subsp. stewartii is a bacterial phytopathogen that causes the disease Stewart's wilt in corn. The insect vector Chaetocnema pulicaria, the corn flea beetle, transmits P. stewartii into corn plants through wounds in the leaves. The bacteria can then move to the xylem of the plant …
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In planta studies of the corn pathogen Pantoea stewartii subsp. stewartii and applications of a corn-based industrial byproduct
… causal agent of Stewart's wilt disease in corn, Pantoea stewartii subsp. stewartii, is a bacterial phytopathogen that is vectored into the plant by the corn flea beetle, Chaetocnema pulicaria. After entering the apoplast of the leaf, the bacteria cause water soaking symptoms before traveling to …
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Role of the Leucine-responsive Regulatory Protein during growth of the bacterial corn pathogen Pantoea stewartii subspecies stewartii in the xylem environment
… disease Stewart's Wilt reduces crop yield. Pantoea stewartii subsp. stewartii (Pss) is transmitted into corn via the corn flea beetle insect vector, Chaetocnema pulicaria. As the beetle feeds on the corn plant leaves, Pss deposited in beetle feces enter the leaf through lesions. The early …
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Genetic Analysis of the Quorum Sensing Regulator EsaR
Pantoea stewartii subsp. stewartii is the causative agent of Stewart's wilt disease in maize plants. The bacteria are injected into the plant by corn flea beetles during feeding. They colonize the xylem and overproduce a capsular exopolysaccharide (EPS) at high cell densities. The production of EPS …
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Structure-Function Analysis of the EsaR N-terminal Domain
… lactone (AHL). EsaR, from the corn pathogen Pantoea stewartii, represents a subset of LuxR homologues that are active in the absence of AHL and deactivated by its presence. The mechanism by which EsaR responds to AHL in a manner opposite to that of the majority of LuxR homologues remains …
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Dynamic regulation of bacterial metabolic pathways using autonomous, pathway-independent control strategies
… We used parts of the Esa QS system (derived from Pantoea stewartii) to create circuit variants in the Lscherichia cohi genome, which switch off expression of the targeted gene at various times and cell densities. Switching times were varied by modulating the expression of the AHL synthase, and …
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Studies on sweet corn: Stewart's wilt forecasting, the effect of maize dwarf mosaic on foliar diseases, and herbicide sensitivity
… wilt on sweet corn with different reactions to Pantoea stewartii, the effect of maize dwarf mosaic (MDM) on eight foliar diseases, and the effect of hybrid CYP genotype on sweet corn yield following postemergence applications of mesotrione or nicosulfuron. Stewart’s disease can be forecasted …
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Investigation of natural and synthetic coupling of the circadian clock in the cyanobacterium Synechococcus elongatus
… *leguminosarum*; the Esa system from *Pantoea* *stewartii*; the Exp system from *Erwinia* *chrysanthemi*; the Las system from *Pseudomonas* *aeruginosa*; the Lux system from *Vibrio* *fischeri*; the Rhl system from *Pseudomonas* *aeruginosa*; the Rpa system from *Rhodopseudomonas* …