A Core Metabolome Response of Maize Leaves Subjected to Long-Duration Abiotic Stresses.

ABSTRACT: Abiotic stresses reduce crop growth and yield in part by disrupting metabolic homeostasis and triggering responses that change the metabolome. Experiments designed to understand the mechanisms underlying these metabolomic responses have usually not used agriculturally relevant stress regimes. We therefore subjected maize plants to drought, salt, or heat stresses that mimic field conditions and analyzed leaf responses at metabolome and transcriptome levels. Shared features of stress metabolomes included synthesis of raffinose, a compatible solute implicated in tolerance to dehydration. In addition, a marked accumulation of amino acids including proline, arginine, and γ-aminobutyrate combined with depletion of key glycolysis and tricarboxylic acid cycle intermediates indicated a shift in bal

SUBMITTER: Joshi J 

PROVIDER: S-EPMC8625080 | biostudies-literature | 2021 Nov

REPOSITORIES: biostudies-literature