Shandong Provincial Key Laboratory of Plant Stress, College of Life Sciences, Shandong Normal University, Jinan, 250014, Shandong, China.
State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, 271018, Shandong, China.
Plant Cell Rep. 2021 Feb;40(2):271-282. doi: 10.1007/s00299-020-02612-1. Epub 2020 Oct 6.
Cytokinins are a class of phytohormone that participate in the regulation of the plant growth, development, and stress response. In this review, the potential regulating mechanism during plant growth and stress response are discussed. Cytokinins are a class of phytohormone that participate in the regulation of plant growth, physiological activities, and yield. Cytokinins also play a key role in response to abiotic stresses, such as drought, salt and high or low temperature. Through the signal transduction pathway, cytokinins interact with various transcription factors via a series of phosphorylation cascades to regulate cytokinin-target gene expression. In this review, we systematically summarize the biosynthesis and metabolism of cytokinins, cytokinin signaling, and associated gene regulation, and highlight the function of cytokinins during plant development and resistance to abiotic stress. We also focus on the importance of crosstalk between cytokinins and other classes of phytohormones, including auxin, ethylene, strigolactone, and gibberellin. Our aim is to provide a comprehensive overview of recent findings on the mechanisms by which cytokinins act as central regulators of plant development and stress reactions, and highlight topics for future research.
细胞分裂素是一类参与植物生长、发育和应激反应调节的植物激素。在这篇综述中，讨论了细胞分裂素在植物生长和应激反应中的潜在调节机制。细胞分裂素是一类参与植物生长、生理活动和产量调节的植物激素。细胞分裂素在应对非生物胁迫，如干旱、盐和高低温等方面也起着关键作用。通过信号转导途径，细胞分裂素通过一系列磷酸化级联反应与各种转录因子相互作用，调节细胞分裂素靶基因的表达。在这篇综述中，我们系统地总结了细胞分裂素的生物合成和代谢、细胞分裂素信号转导以及相关基因调控，并强调了细胞分裂素在植物发育和抗非生物胁迫中的功能。我们还重点关注了细胞分裂素与其他植物激素（包括生长素、乙烯、独脚金内酯和赤霉素）之间的相互作用的重要性。我们的目的是提供一个关于细胞分裂素作为植物发育和应激反应中心调节剂的作用机制的最新发现的综合概述，并强调未来研究的主题。
