Activation of the phz Operon of Pseudomonas fluorescens 2-79 Requires the LuxR Homolog PhzR, N -(3-OH-Hexanoyl)- l -Homoserine Lactone Produced by the LuxI Homolog PhzI, and a cis -Acting phz Box
نویسندگان
چکیده
منابع مشابه
Phenazine-1-carboxamide production in the biocontrol strain Pseudomonas chlororaphis PCL1391 is regulated by multiple factors secreted into the growth medium.
Pseudomonas chlororaphis PCL1391 controls tomato foot and root rot caused by Fusarium oxysporum f. sp. radicis-lycopersici. The production of phenazine-1-carboxamide (PCN) is crucial for this biocontrol activity. In vitro production of PCN is observed only at high-population densities, suggesting that production is under the regulation of quorum sensing. The main autoinducer molecule produced b...
متن کاملExpI and PhzI Are Descendants of the Long Lost Cognate Signal Synthase for SdiA
SdiA of E. coli and Salmonella is a LuxR homolog that detects N-acyl homoserine lactones (AHLs). Most LuxR homologs function together with a cognate AHL synthase (a LuxI homolog), but SdiA does not. Instead, SdiA detects AHLs produced by other bacterial species. In this report, we performed a phylogenetic analysis of SdiA. The results suggest that one branch of the Enterobacteriaceae obtained a...
متن کاملIdentification, synthesis and regulatory function of the N-acylated homoserine lactone signals produced by Pseudomonas chlororaphis HT66
BACKGROUND Pseudomonas chlororaphis HT66 isolated from the rice rhizosphere is an important plant growth-promoting rhizobacteria that produce phenazine-1-carboxamide (PCN) in high yield. Phenazine production is regulated by a quorum sensing (QS) system that involves the N-acylated homoserine lactones (AHLs)-a prevalent type of QS molecule. RESULTS Three QS signals were detected by thin layer ...
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ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 2005
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.187.18.6517-6527.2005