Magnesium Promotes Flagellation of Vibrio fischeri
نویسندگان
چکیده
منابع مشابه
Magnesium promotes flagellation of Vibrio fischeri.
The bacterium Vibrio fischeri requires bacterial motility to initiate colonization of the Hawaiian squid Euprymna scolopes. Once colonized, however, the bacterial population becomes largely unflagellated. To understand environmental influences on V. fischeri motility, we investigated migration of this organism in tryptone-based soft agar media supplemented with different salts. We found that op...
متن کاملDiguanylate cyclases control magnesium-dependent motility of Vibrio fischeri.
Flagellar biogenesis and hence motility of Vibrio fischeri depends upon the presence of magnesium. In the absence of magnesium, cells contain few or no flagella and are poorly motile or nonmotile. To dissect the mechanism by which this regulation occurs, we screened transposon insertion mutants for those that could migrate through soft agar medium lacking added magnesium. We identified mutants ...
متن کاملElectron Microscopy of Flagellation of Vibrio Parahaemolyticus.
The structure of the bacterial flagellum of which diameter lies far below the resolving power of the light microscope came to be observed by the electron microscope. Recently the flagellar structure consisting of the flagellum (central filament or core) and the surrounding sheath has been demonstrated in some bacteria (De Robertis and Franchi. 1951; van Iterson, 1953; Labow, and Mosley. 1955; B...
متن کاملQuorum regulation of luminescence in Vibrio fischeri.
Luminescence in Vibrio fischeri is controlled by a population density-responsive regulatory mechanism called quorum sensing. Elements of the mechanism include: LuxI, an acyl-homoserine lactone (acyl-HSL) synthase that directs synthesis of the diffusible signal molecule, 3-oxo-hexanoyl-HSL (V. fischeri autoinducer-1, VAI-1); LuxR, a transcriptional activator protein necessary for response to VAI...
متن کاملPolyphyly of non-bioluminescent Vibrio fischeri
This study reports the first description and molecular characterization of naturally occurring, nonbioluminescent strains of Vibrio fischeri. These ‘dark’ V. fischeri strains remained non-bioluminescent even after treatment with both autoinducer and aldehyde, substrate additions that typically maximize light production in dim strains of luminous bacteria. Surprisingly, the entire lux locus (eig...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 2005
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.187.6.2058-2065.2005