植物渗透胁迫信号转导：MAPKKKs 遇见 SnRK2s。

Plant Osmotic Stress Signaling: MAPKKKs Meet SnRK2s.

机构信息

Instituto de Biología Molecular y Celular de Plantas, Consejo Superior de Investigaciones Científicas - Universidad Politécnica de Valencia, 46022, Valencia, Spain.

Zoology Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia.

出版信息

Trends Plant Sci. 2020 Dec;25(12):1179-1182. doi: 10.1016/j.tplants.2020.09.003. Epub 2020 Sep 21.

DOI:10.1016/j.tplants.2020.09.003

PMID:32972846

Abstract

Osmotic stress signaling in higher plants is crucial to cope with abiotic stress. RAF-like MAPKKKs are activated by hyperosmotic stress and activate downstream ABA-unresponsive and ABA-activated SnRK2s, integrating early osmotic stress and ABA signaling cascades. The connection of B2/B3/B4 RAF-like MAPKKKs with SnRK2s is a new paradigm in signal transduction.

摘要

高等植物的渗透胁迫信号转导对于应对非生物胁迫至关重要。RAF 样 MAPKKKs 被高渗胁迫激活，并激活下游对 ABA 无反应和 ABA 激活的 SnRK2s，整合早期渗透胁迫和 ABA 信号级联。B2/B3/B4 RAF 样 MAPKKKs 与 SnRK2s 的连接是信号转导中的一个新范例。