A calcium-dependent lipid binding protein, OsANN10, is a negative regulator of osmotic stress tolerance in rice
2020
Gao, Shuxin | Song, Tao | Han, Jianbo | He, Mengli | Zhang, Qian | Zhu, Ying | Zhu, Zhengge
Annexin, a multi-gene family in plants, is essential for plant growth and stress responses. Recent studies demonstrated a positive effect of annexin in abiotic stress responses. Interestingly, we found OsANN10, a putative annexin gene in rice, negatively regulated plant responses to osmotic stress. Knocking down OsANN10 significantly decreased the content of H₂O₂ by increasing Peroxidase (POD) and Catalase (CAT) activities, further reducing oxidative damage in rice leaves, suggesting a negative regulation of OsANN10 in protecting cell membrane against oxidative damage via scavenging ROS under osmotic stress.
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