Primary root response to combined drought and heat stress is regulated via salicylic acid metabolism in maize.

ABSTRACT: The primary root is the first organ to perceive the stress signals for abiotic stress. In this study, maize plants subjected to drought, heat and combined stresses displayed a significantly reduced primary root length. Metabolic and transcriptional analyses detected 72 and 5,469 differentially expressed metabolites and genes in response to stress conditions, respectively. The functional annotation of differentially expressed metabolites and genes indicated that primary root development was mediated by pathways involving phenylalanine metabolism, hormone metabolism and signaling under stress conditions. Furthermore, we found that the concentration of salicylic acid and two precursors, shikimic acid and phenylalanine, showed rapid negative accumulation after all three stresses. The expressio

SUBMITTER: Yang X 

PROVIDER: S-EPMC9425997 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature