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The Role of Cytokinins in Plant Under Salt Stress

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Abstract

The plant hormone cytokinins (CKs) were generally considered associated with plant development. More recently, functions of CKs in plant stress defense including salt have been increasingly characterized. Under saline conditions, not only CKs homeostasis but also its signal transduction pathway is disturbed in a plant species-dependent manner. In turn, through manipulating exogenous CKs application or endogenous CKs metabolism or signaling, plant behavior can also be diverse across species. In this review, we systematically summarized this mutual regulation between CKs and salt stress. Considering the senescence-delaying effect of CKs, its roles in mitigating salt-induced senescence and maintaining crop yields are specifically highlighted. We also discussed here how CKs crosstalk with other phytohormones, including ABA and ethylene, to mediate salt response. In sum, this review provides a comprehensive integration of current knowledge on the regulatory role of CKs upon salt stress and puts forward research directions for future studies.

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Acknowledgements

This work was supported by the Natural Science Foundation of Heilongjiang Province of China (YQ2019C027) and the National Natural Science Foundation of China (Project 31900249).

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  1. Yang Yu and Yanli Li have contributed equally to this work.

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  1. College of Life Science and Engineering, Shenyang University, Shenyang, Liaoning, China

    Yang Yu & Xiangbo Duan

  2. School of Life Sciences, Shandong University, Qingdao, Shandong, China

    Yanli Li & Zhenwei Yan

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  1. Yang Yu
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  2. Yanli Li
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  3. Zhenwei Yan
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  4. Xiangbo Duan
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XD and ZY conceived the review’s outline; YY and LY access information; XD, YY, and LY wrote the manuscript; XD and ZY edited the manuscript. All authors have read and agreed to the published version of the manuscript.

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Correspondence to Zhenwei Yan or Xiangbo Duan.

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Yu, Y., Li, Y., Yan, Z. et al. The Role of Cytokinins in Plant Under Salt Stress. J Plant Growth Regul 41, 2279–2291 (2022). https://doi.org/10.1007/s00344-021-10441-z

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