Zhu Dan, Hu Xiaobing, Wang Hailong, Zhang Yonghu, Li Xianglong, Song Wenqing, Wen Rui, Feng Feng, Chai Ran, Wei Jianhua, Zhang Jiewei
School of Environmental Engineering, Yellow River Conservancy Technical University, Kaifeng 475004, China.
Beijing Key Laboratory of Agricultural Genetic Resources and Biotechnology, Beijing Key Laboratory of Crop Molecular Design and Intelligent Breeding, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China.
Plants (Basel). 2025 Jun 26;14(13):1960. doi: 10.3390/plants14131960.
Foxtail millet (), a significant C4 model crop known for its exceptional photosynthetic efficiency and robust environmental adaptability, serves as an excellent model for investigating C4 photosynthesis and crop stress resilience. When subjected to abiotic stress, foxtail millet employs a sophisticated signal transduction network to regulate its physiological processes, ensuring sustained high photosynthetic efficiency and normal growth. The mitogen-activated protein kinase (MAPK) family plays a key role in plant growth, development, and stress response. Here, we identified and named a MAPK in as SiMPK6. Fluorescence quantitative PCR analysis revealed that SiMPK6 is mainly expressed in the leaves during the early shooting stage, with induction under various abiotic stresses such as low temperature, high osmotic pressure, high salt, high temperature, and high light. Overexpressing the in mitigated damage to photosystem II induced by stress, underscoring the gene's crucial role in foxtail millet's stress signal transduction and maintenance of high photosynthetic efficiency.
谷子（）是一种重要的C4模式作物，以其卓越的光合效率和强大的环境适应性而闻名，是研究C4光合作用和作物胁迫抗性的优秀模式。在遭受非生物胁迫时，谷子利用复杂的信号转导网络来调节其生理过程，确保持续的高光合效率和正常生长。丝裂原活化蛋白激酶（MAPK）家族在植物生长、发育和胁迫反应中起关键作用。在此，我们在中鉴定并命名了一个MAPK为SiMPK6。荧光定量PCR分析表明，SiMPK6在拔节初期主要在叶片中表达，在低温、高渗透压、高盐、高温和高光等各种非生物胁迫下被诱导。在中过表达减轻了胁迫诱导的对光系统II的损伤，突出了该基因在谷子胁迫信号转导和维持高光合效率中的关键作用。
