期刊
PLANTS-BASEL
卷 10, 期 7, 页码 -出版社
MDPI
DOI: 10.3390/plants10071443
关键词
abscisic acid; osmotic stress; protein kinase; growth promotion; SnRK2; Raf
Recent studies have shown that SnRK2s play a central role in modulating plant growth and osmotic stress signaling through various pathways, including activation mechanisms independent of ABA and regulation through TOR signaling. These findings provide important insights for further research on plant growth and stress responses.
Reversible phosphorylation is a major mechanism for regulating protein function and controls a wide range of cellular functions including responses to external stimuli. The plant-specific SNF1-related protein kinase 2s (SnRK2s) function as central regulators of plant growth and development, as well as tolerance to multiple abiotic stresses. Although the activity of SnRK2s is tightly regulated in a phytohormone abscisic acid (ABA)-dependent manner, recent investigations have revealed that SnRK2s can be activated by group B Raf-like protein kinases independently of ABA. Furthermore, evidence is accumulating that SnRK2s modulate plant growth through regulation of target of rapamycin (TOR) signaling. Here, we summarize recent advances in knowledge of how SnRK2s mediate plant growth and osmotic stress signaling and discuss future challenges in this research field.
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