Deprogrammed sporulation inStreptomyces
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منابع مشابه
Deprogrammed sporulation in Streptomyces.
The bacterial genus Streptomyces forms chains of spores by septation at intervals in aerial hyphae and subsequent maturation on solid medium. Substrate hyphae undergo extensive lysis, liberating nutrients on which aerial hyphae develop. Some mutant strains, however, ectopically form spores by septation in substrate hyphae on solid medium or in vegetative hyphae in liquid medium, which suggests ...
متن کاملhmgA, transcriptionallyactivated byHpdA, in£uences the biosynthesis ofactinorhodin inStreptomyces coelicolor
Homogentisate 1,2-dioxygenase (HmgA) converts homogentisate to maleylacetoacetate in the pathway of tyrosine catabolism in living organisms. Studies published to date have not elucidated the transcriptional regulation of hmgA and its biological function in Streptomyces spp. Here it is shown that the transcription of hmgA in Streptomyces coelicolor was activated by HpdA, an AsnC-type activator, ...
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The ability of vegetative cells to sporulate in water was first reported by Buchner ( 1890) and confirmed by Schreiber (1896) and Knaysi (1945). More recently, the replacement of a complex sporulation broth by water has proved to be a useful procedure for a variety of purposes (Grelet, 1951, 1955; Hardwick and Foster, 1952; Powell and Hunter, 1953; Foster and Perry, 1954; Perry and Foster, 1954...
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Mycobacteria owe their success as pathogens to their ability to persist for long periods within host cells in asymptomatic, latent forms before they opportunistically switch to the virulent state. The molecular mechanisms underlying the transition into dormancy and emergence from it are not clear. Here we show that old cultures of Mycobacterium marinum contained spores that, upon exposure to fr...
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A broth medium containing tryptone and manganese sulfate supported heavy sporulation of Bacillus stearothermophilus ATCC 7953 (NCA 1518) and four isolates identified as B. stearothermophilus. Maximal spore yields were obtained by use of inocula grown anaerobically in a medium containing glucose with aeration of sporulation medium via bubbling. After an extended stationary period, sporulation oc...
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ژورنال
عنوان ژورنال: FEMS Microbiology Letters
سال: 2002
ISSN: 0378-1097,1574-6968
DOI: 10.1111/j.1574-6968.2002.tb11406.x