ZmCIPK21, A Maize CBL-Interacting Kinase, Enhances Salt Stress Tolerance in Arabidopsis thaliana
AbstractSalt stress represents an increasing threat to crop growth and yield in saline soil. In this study, we identified a maize calcineurin B-like protein-interacting protein kinase (CIPK), ZmCIPK21, which was primarily localized in the cytoplasm and the nucleus of cells and displayed enhanced expression under salt stress. Over-expression of ZmCIPK21 in wild-type Arabidopsis plants increased their tolerance to salt, as supported by the longer root lengths and improved growth. The downstream stress-response genes, including dehydration-responsive element-binding (DREB) genes were also activated in transgenic plants over-expressing ZmCIPK21. In addition, introduction of the transgenic ZmCIPK21 gene into the Arabidopsis mutant cipk1-2 rescued the salt-sensitive phenotype under high salt stress. Measurement of Na+ and K+ content in transgenic plants showed that over-expression of ZmCIPK21 decreased accumulation of Na+ and allowed retention of relatively high levels of K+, thereby enhancing plant tolerance to salt conditions. View Full-Text
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Chen, X.; Huang, Q.; Zhang, F.; Wang, B.; Wang, J.; Zheng, J. ZmCIPK21, A Maize CBL-Interacting Kinase, Enhances Salt Stress Tolerance in Arabidopsis thaliana. Int. J. Mol. Sci. 2014, 15, 14819-14834.
Chen X, Huang Q, Zhang F, Wang B, Wang J, Zheng J. ZmCIPK21, A Maize CBL-Interacting Kinase, Enhances Salt Stress Tolerance in Arabidopsis thaliana. International Journal of Molecular Sciences. 2014; 15(8):14819-14834.Chicago/Turabian Style
Chen, Xunji; Huang, Quansheng; Zhang, Fan; Wang, Bo; Wang, Jianhua; Zheng, Jun. 2014. "ZmCIPK21, A Maize CBL-Interacting Kinase, Enhances Salt Stress Tolerance in Arabidopsis thaliana." Int. J. Mol. Sci. 15, no. 8: 14819-14834.