Auxotrophic mutation and infectivity of Agrobacterium tumefaciens
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چکیده
منابع مشابه
Auxotrophic mutation and infectivity of Agrobacterium tumefaciens.
Pathogenicity of many microorganisms depends on their ability to metabolize and often to multiply in the host (Garber, Ann. N.Y. Acad. Sci. 88:1187, 1960; Panos and Ajl, Ann. Rev. Microbiol. 17:297, 1963). Both of these processes may be altered by mutation of the bacterium to auxotrophy, particularly if the host fails to provide an adequate source of the required metabolite in the infection cou...
متن کاملCharacteristics of Agrobacterium tumefaciens auxotrophic mutant infectivity.
Lippincott, Barbara B. (Northwestern University, Evanston, Ill.), and James A. Lippincott. Characteristics of Agrobacterium tumefaciens auxotrophic mutant infectivity. J. Bacteriol. 92:937-945. 166.-Mutants of Agrobacterium tumefaciens auxotrophic for adenine, methionine, or asparagine are less infectious than the wild-type strain B6 from which they were derived and show increased infectivity o...
متن کاملLight affects motility and infectivity of Agrobacterium tumefaciens.
Response to changes in light conditions involves a variety of receptors that can modulate gene expression, enzyme activity and/or motility. For the study of light-regulated effects of Agrobacterium tumefaciens, we used a global analysis approach - proteomics - and compared the protein patterns of dark- and light-grown bacteria. These analyses revealed a significant reduction of FlaA and FlaB - ...
متن کاملEnhancement of Agrobacterium tumefaciens Infectivity by Chlorpromazine Hydrochloride.
The tumor-initiating ability of Agrobacterium tumefaciens was enhanced two- to threefold after a preinoculation exposure to the phenothiazine derivative chlorpromazine hydrochloride. The mean number of tumors initiated per viable bacterium on pinto bean leaves was greatest after a 1-hr exposure to 15 mug of the drug per ml. Chlorpromazine had no significant effect on tumor initiation when appli...
متن کاملUltraviolet-induced changes in the infectivity of Agrobacterium tumefaciens.
The infectivity of Agrobacterium tumefaciens strain B6 irradiated with short-wavelength ultraviolet light was followed as a function of dose. Previously reported enhancements of B6 infectivity by ultraviolet irradiation, in samples inoculated after 1.75 hr of dark incubation at 27 C, or immediately following irradiation, were found to occur most frequently after losses in cell viability of 60% ...
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ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 1965
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.90.4.1155-1156.1965