Exogenous Calcium Enhances Castor Tolerance to Saline-Alkaline Stress by Regulating Antioxidant Enzyme Activity and Activating Ca²⁺ and ROS Signaling Crosstalk.

ABSTRACT: Saline-alkaline stress is a major factor limiting agricultural development, with calcium (Ca²⁺) playing a role in regulating plant tolerance through multiple signaling pathways. However, the specific mechanisms by which Ca²⁺ mediates saline-alkaline stress tolerance at the molecular level remain incompletely understood. This study investigates the effects of exogenous Ca²⁺ application on enhancing plant tolerance to saline-alkaline stress, focusing on its impact on the antioxidant system and Ca²⁺ and reactive oxygen species (ROS) signaling pathways. Through physiological assays and transcriptomic analyses, we evaluated oxidative damage markers, antioxidant enzyme activities, and the expression of key Ca²⁺ and ROS signaling genes. The r

SUBMITTER: Hao F 

PROVIDER: S-EPMC11641542 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature