Physiological and Transcriptome Analysis Reveal the Underlying Mechanism of Salicylic Acid-Alleviated Drought Stress in Kenaf (Hibiscus cannabinus L.).

ABSTRACT: Salicylic acid (SA) plays a crucial role in alleviating drought stress in plants. However, little is known about the molecular mechanisms underlying exogenous SA on the drought tolerance of kenaf. In this study, the kenaf seedlings were subjected to physiological and transcriptomic analysis under control (CK), moderate drought stress (D), and moderate drought stress with 1 mM SA (D_SA). Under drought conditions, SA significantly improved the plant biomass, leaf area, antioxidant enzyme activities (SOD, POD, and CAT), soluble sugars, starch and proline contents, and photosynthesis, while the contents of MDA, H₂O₂, and O₂^- were significantly decreased. A total of 3430 (1118 up-regulated and 2312 down-regulated) genes were differentially expressed i

SUBMITTER: Zhang H 

PROVIDER: S-EPMC11856667 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature