Role and Regulation of Cytokinins in Plant Response to Drought Stress

Plants

NguyenPhuong Thao¹  NguyenNgoc Hai¹  NguyenNguyen Chuong¹  XuanLan Thi Hoang¹  NguyenHuu Cam Tu¹  Anna Kisiala² 

[1] Applied Biotechnology for Crop Development Research Unit, School of Biotechnology, International University, Ho Chi Minh City 700000, Vietnam;Department of Biology, Trent University, Peterborough, ON K9L 0G2, Canada;

关键词: abscisic acid;    CK metabolic genes;    CK signaling genes;    cytokinin;    drought tolerance;   

DOI  :  10.3390/plants9040422

来源: DOAJ

【 摘 要 】

Cytokinins (CKs) are key phytohormones that not only regulate plant growth and development but also mediate plant tolerance to drought stress. Recent advances in genome-wide association studies coupled with in planta characterization have opened new avenues to investigate the drought-responsive expression of CK metabolic and signaling genes, as well as their functions in plant adaptation to drought. Under water deficit, CK signaling has evolved as an inter-cellular communication network which is essential to crosstalk with other types of phytohormones and their regulating pathways in mediating plant stress response. In this review, we revise the current understanding of CK involvement in drought stress tolerance. Particularly, a genetic framework for CK signaling and CK crosstalk with abscisic acid (ABA) in the precise monitoring of drought responses is proposed. In addition, the potential of endogenous CK alteration in crops towards developing drought-tolerant crops is also discussed.

【 授权许可】

Unknown