Metabolism of Tryptophan and Tryptophan Analogs by Rhizobium meliloti.
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.
Williams
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MN
Department of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139.
Signer
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