Effect of maize root exudates on indole-3-acetic acid production by rice endophytic bacteria under influence of L-tryptophan.

ABSTRACT: Background: It is assumed that plant growth regulators produced by beneficial bacterial species could also influence plant growth. IAA is a major plant growth regulator responsible for stimulation of plant growth. There are several microorganisms which are naturally responsible for L- tryptophan metabolism. Methods: In total, 56 indigenous morphologically distinct isolates from rice roots were selected and subsequently characterized with biochemical tests, 16S rRNA sequencing and plant growth promoting activities. Pseudomonasfluorescens RE1 (GenBank: MF102882.1) and RE17 (GenBank: MF103672.1) endophytes resulted in better PGP activity against the other 54 isolates. Both endophytes were tested to screen indole-3-acetic acid production ability in pure culture cond

SUBMITTER: Karnwal A 

PROVIDER: S-EPMC5829522 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature