Bioprospecting Plant Growth-Promoting Rhizobacteria That Mitigate Drought Stress in Grasses.

ABSTRACT: This study reports the application of a novel bioprospecting procedure designed to screen plant growth-promoting rhizobacteria (PGPR) capable of rapidly colonizing the rhizosphere and mitigating drought stress in multiple hosts. Two PGPR strains were isolated by this bioprospecting screening assay and identified as Bacillus sp. (12D6) and Enterobacter sp. (16i). When inoculated into the rhizospheres of wheat (Triticum aestivum) and maize (Zea mays) seedlings, these PGPR resulted in delays in the onset of plant drought symptoms. The plant phenotype responding to drought stress was associated with alterations in root system architecture. In wheat, both PGPR isolates significantly increased root branching, and Bacillus sp. (12D6), in particular, increased ro

SUBMITTER: Jochum MD 

PROVIDER: S-EPMC6747002 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature