Catabolite-repression-like Phenomenon in Rhizobium Meliloti

Overview

Journal J Bacteriol

Publisher American Society for Microbiology

Specialty Microbiology

Date 1978 Dec 1

PMID 214420

Citations 36

Authors

D S Ucker

E R Signer

Affiliations

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Abstract

We report a phenomenon similar to catabolite repression in Rhizobium meliloti. Succinate, which allows the highest observed rate of growth of R. meliloti, caused an immediate reduction of beta-galactosidase activity when added to cells growing in lactose. A Lac- mutant was unaltered in nodulation and nitrogen fixation capacities, but a pleiotropic mutant deficient in several catabolic properties was unable to produce effective nitrogen-fixing nodules.

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References

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