Competition of Octopine-Catabolizing Pseudomonas spp. and Octopine-Type Agrobacterium tumefaciens for Octopine in Chemostats
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چکیده
منابع مشابه
Growth of Octopine-Catabolizing Pseudomonas spp. under Octopine Limitation in Chemostats and Their Potential To Compete with Agrobacterium tumefaciens.
The growth characteristics of five octopine-catabolizing pseudomonads have been determined in batch and continuous cultures. All five strains belonged to rRNA homology group I and showed a more psychrotrophic growth pattern than did Agrobacterium tumefaciens B6 and ATCC 15955. In chemostats limited by octopine, either as the source of carbon and nitrogen or the sole source of nitrogen, maximum ...
متن کاملGenome Sequence of the Octopine-Type Agrobacterium tumefaciens Strain Ach5
We have sequenced the complete genome of the plant pathogen Agrobacterium tumefaciens strain LBA4213, a derivative of the wild-type strain A. tumefaciens Ach5 and the ancestor of A. tumefaciens strain LBA4404 used in genetic engineering. The genome consists of a circular chromosome and a linear chromosome, as well as a megaplasmid and a tumor-inducing plasmid.
متن کاملDual control of quorum sensing by two TraM-type antiactivators in Agrobacterium tumefaciens octopine strain A6.
Agrobacterium tumefaciens wild-type strains have a unique quorum-sensing (QS)-dependent Ti plasmid conjugative transfer phenotype in which QS signaling is activated by corresponding conjugative opine inducers. Strain K588, with a nopaline-type chromosomal background harboring an octopine-type Ti plasmid, however, is a spontaneous mutant displaying a constitutive phenotype in QS. In this study, ...
متن کاملAgrobacterium tumefaciens mutants affected in crown gall tumorigenesis and octopine catabolism.
Mutants of Agrobacterium tumefaciens which affect virulence or the ability to catabolize octopine were isolated after Tn5-induced mutagenesis. Of 8,900 colonies tested, 7 mutants with Tn5 insertions in a specific region of other Ti plasmid unable to catabolize octopine were isolated. Thirty-seven mutants affected in tumorigenesis resulted from insertions in the Ti plasmid and the Agrobacterium ...
متن کاملIdentification of Agrobacterium tumefaciens genes that direct the complete catabolism of octopine.
Agrobacterium tumefaciens R10 was mutagenized by using the promoter probe transposon Tn5-gusA7, and a library of approximately 5,000 transcriptional fusions was screened for octopine-inducible patterns of gene expression. Twenty-one mutants carrying strongly inducible gusA fusions, 20 of which showed defects in the catabolism of octopine or its metabolites, were obtained. One group of mutants c...
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ژورنال
عنوان ژورنال: Applied and Environmental Microbiology
سال: 1990
ISSN: 0099-2240,1098-5336
DOI: 10.1128/aem.56.9.2840-2846.1990