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Bulletin of Botanical Research ›› 2024, Vol. 44 ›› Issue (5): 641-654.doi: 10.7525/j.issn.1673-5102.2024.05.001

• Review •     Next Articles

Research Progress of Ca2+-ATPase Involved in Regulation of Plant Salt Tolerance

Xiuying MA1,2, Jinke LI3, Xiaoyang ZHOU3, Shaoliang CHEN2()   

  1. 1.College of Life Science and Biological Engineering,Jining University,Qufu 273155
    2.Beijing Advanced Innovation Center for Tree Breeding by Molecular Design,College of Biological Sciences and Technology,Beijing Forestry University,Beijing 100083
    3.Laboratory and Equipment Management Office,Beijing Forestry University,Beijing 100083
  • Received:2024-02-19 Online:2024-09-20 Published:2024-09-23
  • Contact: Shaoliang CHEN E-mail:lschen@bjfu.edu.cn

Abstract:

When cytosolic Ca2+ concentration is increased under salt stress, cells would activate Ca2+-regulated target enzymes or induce Ca2+ bind to Ca2+ high-affinity receptor proteins. Among them, plant Ca2+-ATPases are P-type ATPases, including endoplasmic reticulum Ca2+-ATPase(ECAs) and plasma membrane Ca2+-ATPase(ACAs); they are able to translocate Ca2+ from the cytosol to apoplast or compartmentalize Ca2+ in organelles. Numerous studies have shown that salt tolerance of plants is largely related to their ability to maintain the activities of calcium pump, namely Ca2+-ATPases. The activities of Ca2+-ATPases in various plant species were sensitive to salt stress; exogenous Ca2+ application can alleviate cell injury by salt stress, suggesting that exogenous calcium -mediated Ca2+-ATPase might play an important role in intracellular calcium homeostasis and signal transduction. Therefore, this review summarized the types, structures and properties of plant Ca2+-ATPase, and the involvement of Ca2+-ATPase of subcellular localization in plant response to salt tolerance and the research progress of exogenous calcium and Ca2+-ATPase in regulation on plant salt tolerance. It emphasized potential roles of Ca2+-ATPases of plant plasma membrane, tonoplast, nuclear membrane, endoplasmic reticulum and Golgi in regulation of salt tolerance in plants, and presented an outlook in the field. This work provided help for a better understanding of physiological and molecular mechanisms of plant salt tolerance and provided new ideas for crop salt-tolerance cultivation.

Key words: Ca2+-ATPase, plasma membrane, tonoplast, endoplasmic reticulum, nuclear envelope, salt stress

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