Evolutionary dynamics of the calcium/cation antiporter superfamily in Brassicaceae: codon usage, selection pressure, and <i>BnCaCAs</i> role in abiotic stress response.

ABSTRACT: Calcium (Ca²⁺) serves as a crucial intracellular messenger in plant signaling, particularly during stress responses. Precise regulation of calcium levels by transporters such as calcium/cation (CaCA) antiporters is essential for its effective function. However, the evolutionary dynamics and stress-related roles of the CaCA superfamily remain underexplored in key Brassicaceae crops. This study aimed to address this gap by investigating the hypothesis that CaCA genes in Brassica napus, B. rapa, and B. oleracea have undergone distinct evolutionary trajectories influencing their roles in abiotic stress responses, using Arabidopsis thaliana for comparison. Using Hidden Markov Model (HMM) profiling, 93 CaCA genes were identified across these species.

SUBMITTER: Abedi A 

PROVIDER: S-EPMC12279817 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature