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Review
. 2024 Oct 25;40(10):3337-3359.
doi: 10.13345/j.cjb.230827.

[Functions and mechanisms of CDPKs in plant responses to abiotic stress]

[Article in Chinese]
Min Li  1 , Guoqiang Wu  1 , Ming Wei  1 , Chen Liu  2
Affiliations
Free article
Review

[Functions and mechanisms of CDPKs in plant responses to abiotic stress]

[Article in Chinese]
Min Li et al. Sheng Wu Gong Cheng Xue Bao. .
Free article

Abstract

Calcium-dependent protein kinases (CDPKs/CPKs) are members of the Ca2+-sensitive Ser/Thr protein kinase family and play a crucial role in plant growth and development and responses to abiotic stress. CDPKs are capable of rapidly sensing changes in intracellular Ca2+ signals and recognizing and phosphorylating specific substrates, thereby transmitting and amplifying Ca2+ signal cascades downstream. They are involved in plant responses to stress conditions such as drought, saline-alkali stress, and injuries and regulate plant growth and development, gene expression, ion channel activity, and stomatal movement. The autophosphorylation of CDPKs can affect their activities and substrate specificity. CDPKs have the ability to bind to and phosphorylate multiple substrates. In addition to participating in respiratory burst oxidase homolog (RBOH), mitogen-activated protein kinase (MAPK), and plant hormone signaling pathways, CDPKs can also bind to 14-3-3 proteins, which enables the regulation of plant responses to stress and promotes plant growth and development. This paper summarized the research findings on the discovery, structure, classification, and roles of CDPKs in plant responses to stress and proposed the future research directions, aiming to provide the genetic resources and a theoretical basis for improving the stress tolerance of crops.

Keywords: calcium-dependent protein kinases; growth and development; signal transduction; stomatal movement; stress tolerance.

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