Comparative physiological and root proteome analyses of two sorghum varieties responding to water limitation.

ABSTRACT: When exposed to drought stress many plants reprogram their gene expression to activate adaptive biochemical and physiological responses for survival. However, most of the well-studied adaptive responses are common between drought-sensitive and drought-tolerant species, making it difficult to identify the key mechanisms underpinning successful drought tolerance in crops. We developed a sorghum experimental system that compares between drought-sensitive (ICSB338) and enhanced drought-tolerant (SA1441) varieties. We show that sorghum activates a swift and robust stomatal shutdown to preserve leaf water content when water stress has been sensed. Water uptake is enhanced via increasing root cell water potential through the rapid biosynthesis of predominantly glycine betaine and an increased roo

SUBMITTER: Goche T 

PROVIDER: S-EPMC7366710 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature