Insights into Metabolic Reactions of Semi-Dwarf, Barley Brassinosteroid Mutants to Drought.

ABSTRACT: The roles of endogenous brassinosteroids (BRs) in the modulation of reaction to drought and genetic regulation of this process are still obscure. In this study, a multidirectional analysis was performed on semi-dwarf barley (Hordeum vulgare) Near-Isogenic Lines (NILs) and the reference cultivar "Bowman" to get insights into various aspects of metabolic reaction to drought. The NILs are defective in BR biosynthesis or signaling and displayed an enhanced tolerance to drought. The BR metabolism perturbations affected the glucose and fructose accumulation under the control and stress conditions. The BR metabolism abnormalities negatively affected the sucrose accumulation as well. However, during drought, the BR-deficient NILs accumulated higher contents of sucrose than the "Bowman" cultivar. U

SUBMITTER: Gruszka D 

PROVIDER: S-EPMC7404083 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature