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. 1990 Apr;92(4):1009–1013. doi: 10.1104/pp.92.4.1009

Metabolism of Tryptophan and Tryptophan Analogs by Rhizobium meliloti1

Myron N V Williams 1,2, Ethan R Signer 1
PMCID: PMC1062409  PMID: 16667364

Abstract

The alfalfa symbiont Rhizobium meliloti Rm1021 produces indole-3-acetic acid in a regulated manner when supplied with exogenous tryptophan. Mutants with altered response to tryptophan analogs still produce indole-3-acetic acid, but are Fix because bacteria do not fully differentiate into the nitrogen-fixing bacteriod form. These mutations are in apparently essential genes tightly linked to a dominant streptomycin resistance locus.

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Selected References

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