期刊
MICROBIOLOGY
卷 70, 期 4, 页码 392-397出版社
MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1023/A:1010469708107
关键词
aerobic methylotrophic bacteria; Methylobacterium; Aminobacter; Methylovorus; Paracoccus; auxins; indole-3-acetic acid
类别
Obligately and facultatively methylotrophic bacteria with different pathways of C1 metabolism were found to be able to produce auxins, particularly indole-3-acetic acid (IAA), in amounts of 3-100 mug/ml. Indole-3-pyruvic acid and indole-3-acetamide were detected only in methylobacteria with the serine pathway of C1 metabolism (Methylobacterium mesophilicum and Aminobacter aminovorans). The production of auxins by methylobacteria was stimulated by the addition of L-tryptophan to the growth medium and was inhibited by ammonium ions. The methylobacteria under study lacked tryptophan decarboxylase and tryptophan side-chain oxidase. At the same time, they were found to contain several aminotransferases. IAA is presumably synthesized by methylobacteria through indole-3-pyruvic acid.
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