脱落酸
生物
钙调蛋白
磷酸酶
磷酸化
细胞生物学
激酶
信号转导
生物化学
酶
基因
作者
Miguel Ángel Medina Torres,Diego José Berlanga
标识
DOI:10.1016/j.molp.2023.05.002
摘要
Abscisic acid (ABA) is an important hormone that regulates both plant development and stress responses ( Chen et al., 2020 Chen K. Li G.J. Bressan R.A. Song C.P. Zhu J.K. Zhao Y. Abscisic acid dynamics, signaling, and functions in plants. J. Integr. Plant Biol. 2020; 62: 25-54 Crossref PubMed Scopus (610) Google Scholar ). In the absence of ABA, group A PROTEIN PHOSPHATASE 2Cs (PP2Cs) interact with and inhibit SUCROSE-NON-FERMENTING 1-RELATED KINASES 2 (SnRK2s). When ABA is present, ABA receptor PYRABACTIN RESISTANCE 1 and PYRABACTIN RESISTANCE 1-LIKE PROTEINS bind to and inhibit PP2Cs, allowing phosphorylation and activation of SnRK2s that, in turn, phosphorylate downstream targets, such as transcription factors, ion channels, and transporters (Figure 1).
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