Metabolism of Tryptophan and Tryptophan Analogs by Rhizobium meliloti | Zendy

Myron N. V. Williams | Zendy; Ethan R. Signer | Zendy

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Metabolism of Tryptophan and Tryptophan Analogs by Rhizobium meliloti

Author(s) -

Myron N. V. Williams,

Ethan R. Signer

Publication year - 1990

Publication title -

plant physiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.554

H-Index - 312

eISSN - 1532-2548

pISSN - 0032-0889

DOI - 10.1104/pp.92.4.1009

Subject(s) - tryptophan , rhizobium , mutant , indole test , biochemistry , biology , streptomycin , bacteria , tryptophan synthase , chemistry , gene , amino acid , genetics , antibiotics

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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