A dynamic rhizosphere interplay between tree roots and soil bacteria under drought stress.

ABSTRACT: Root exudates are thought to play an important role in plant-microbial interactions. In return for nutrition, soil bacteria can increase the bioavailability of soil nutrients. However, root exudates typically decrease in situations such as drought, calling into question the efficacy of solvation and bacteria-dependent mineral uptake in such stress. Here, we tested the hypothesis of exudate-driven microbial priming on Cupressus saplings grown in forest soil in custom-made rhizotron boxes. A 1-month imposed drought and concomitant inoculations with a mix of Bacillus subtilis and Pseudomonas stutzeri, bacteria species isolated from the forest soil, were applied using factorial design. Direct bacteria counts and visualization by confocal microscopy showed that both bacteri

SUBMITTER: Oppenheimer-Shaanan Y 

PROVIDER: S-EPMC9385208 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature