Biopolymers and cell. 1990. Volume 6. № 6. 93 - 96

N. A. Kozyrovskaya, V. L. Makitruk, E. Ruckdashell

NITROGEN-FIXING KLEBSIELLA SPECIES PRODUCE INDOLE-3-ACETIC ACID

Summary

    Nitrogen-fixing bacteria isolated from plant K. planticola and K. oxytoca were examined for their ability to produce indole compounds including the plant hormone indole-3-acetic acid. Indoles presented in culture filtrates were identified by thin-layer chromatography and quantitated by high-performance liquid chromatography. Bacteria produced IAA when liquid media were supplemented with L-tryptophan. Additional jndoles were found in culture filtrates: indole-3-lactic acid, indole-3-pyruvic acid, indole-3-acetaldehyde.