OsASR5 enhances drought tolerance through a stomatal closure pathway associated with ABA and H₂ O₂ signalling in rice.

ABSTRACT: Drought is one of the major abiotic stresses that directly implicate plant growth and crop productivity. Although many genes in response to drought stress have been identified, genetic improvement to drought resistance especially in food crops is showing relatively slow progress worldwide. Here, we reported the isolation of abscisic acid, stress and ripening (ASR) genes from upland rice variety, IRAT109 (Oryza sativa L. ssp. japonica), and demonstrated that overexpression of OsASR5 enhanced osmotic tolerance in Escherichia coli and drought tolerance in Arabidopsis and rice by regulating leaf water status under drought stress conditions. Moreover, overexpression of OsASR5 in rice increased endogenous ABA level and showed hypersensitive to exogenous ABA treatment at both germination and post

SUBMITTER: Li J 

PROVIDER: S-EPMC5258865 | biostudies-literature | 2017 Feb

REPOSITORIES: biostudies-literature