Cyclopropane fatty acids of rugose Vibrio cholerae
نویسندگان
چکیده
منابع مشابه
Sugars inhibit expression of the rugose phenotype of Vibrio cholerae.
Vibrio cholerae can shift to a rugose colony phenotype, reflecting expression of an exopolysaccharide that provides protection against a variety of environmental stresses. Our data indicate that expression of the rugose phenotype is inhibited by a variety of sugars, including sucrose, dextrose, arabinose, fructose, and maltose. Inhibition by sucrose may be one factor in explaining the failure o...
متن کاملIdentification of genes involved in the switch between the smooth and rugose phenotypes of Vibrio cholerae.
Vibrio cholerae can switch to a 'rugose' phenotype characterized by an exopolysaccharide (EPS) matrix, wrinkled colony morphology, increased biofilm formation and increased survival under specific conditions. The vps gene cluster responsible for the biosynthesis of the rugose EPS (rEPS) is positively regulated by VpsR. We recently identified media (APW#3) promoting EPS production and the rugose...
متن کاملSequence analysis of TnphoA insertion sites in Vibrio cholerae mutants defective in rugose polysaccharide production.
Vibrio cholerae can switch from a smooth to a wrinkled or rugose colony phenotype characterized by the secretion of a polysaccharide that enables the bacteria to survive harsh environmental conditions. In order to understand the genetic basis of rugosity, we isolated TnphoA-induced stable, smooth mutants of two O1 El Tor rugose strains and mapped the insertion sites in several of the mutants us...
متن کاملIsolation and characterization of rugose form of Vibrio cholerae O139 strain MO10.
An extracellular exopolysaccharide (slime) is produced by Vibrio cholerae O139 MO10 in response to nutrient starvation. The presence of this slime layer on the cell surface and its subsequent release have been shown to be associated with biofilm formation and the change from a normal smooth colony morphology to a rugose one. An immunoelectron microscopic examination demonstrated that there is a...
متن کاملThe rbmBCDEF gene cluster modulates development of rugose colony morphology and biofilm formation in Vibrio cholerae.
Vibrio cholerae, the causative agent of cholera, can undergo phenotypic variation generating rugose and smooth variants. The rugose variant forms corrugated colonies and well-developed biofilms and exhibits increased levels of resistance to several environmental stresses. Many of these phenotypes are mediated in part by increased expression of the vps genes, which are organized into vps-I and v...
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ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 1968
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.96.6.2181-2182.1968