Jb. Jensen et al., CATABOLISM OF INDOLE-3-ACETIC-ACID AND 4-CHLOROINDOLE-3-ACETIC AND 5-CHLOROINDOLE-3-ACETIC ACID IN BRADYRHIZOBIUM-JAPONICUM, Journal of bacteriology, 177(20), 1995, pp. 5762-5766
Some strains of Bradyrhizobium japonicum have the ability to cataboliz
e indole-3-acetic acid, Indoleacetic acid (IAA), 4-chloro-IAA (4-Cl-IA
A), and 5-Cl-IAA were metabolized to different extents by strains 61A2
4 and 110, Metabolites were isolated and analyzed by high-performance
liquid chromatography and conventional mass spectrometry (MS) methods,
including MS-mass spectroscopy, UV spectroscopy, and high-performance
liquid chromatography-MS. The identified products indicate a novel me
tabolic pathway in which IAA is metabolized via dioxindole 3-acetic ac
id, dioxindole, isatin, and 2-aminophenyl glyoxylic acid (isatinic aci
d) to anthranilic acid, which is further metabolized, Degradation of 4
-Cl-IAA apparently stops at the 4-Cl-dioxindole step in contrast to 5-
Cl-IAA which is metabolized to 5-Cl-anthranilic acid.