Characterization of plant growth-promoting rhizobacteria (PGPR) in Persian walnut associated with drought stress tolerance.

ABSTRACT: There is a lack of information on the rhizosphere of nut-bearing trees where microbial populations can benefit roots and tree growth. The current research aimed at discovering plant growth-promoting rhizobacteria (PGPR) in the rhizosphere of soil samples from around the root zone of six walnut trees, each of which was considered as a genotype, i.e. 'TT1', 'TT2', 'SS2', 'ZM1', 'Chandler' and 'Haward'. The trees grew in different arid and semiarid regions of Iran and Turkey. The strains were isolated and identified based on different morphological and biochemical markers. Drought-stress tolerance was assessed in the case of each isolate through their transfer to culture medium, containing polyethylene glycol (PEG₆₀₀₀) at 0 and 373.80 g L^-1. Resilient strains were analyz

SUBMITTER: Lotfi N 

PROVIDER: S-EPMC9325983 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature