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A RAF-SnRK2 kinase cascade mediates early osmotic stress signaling in higher plants.
Nature Communications ( IF 14.7 ) Pub Date : 2020-01-30 , DOI: 10.1038/s41467-020-14477-9 Zhen Lin 1 , Yuan Li 2, 3 , Zhengjing Zhang 1 , Xiaolei Liu 1 , Chuan-Chih Hsu 1, 4 , Yanyan Du 1 , Tian Sang 1 , Chen Zhu 1 , Yubei Wang 1 , Viswanathan Satheesh 1 , Pritu Pratibha 1 , Yang Zhao 1 , Chun-Peng Song 5 , W Andy Tao 6, 7 , Jian-Kang Zhu 1, 3 , Pengcheng Wang 1
Nature Communications ( IF 14.7 ) Pub Date : 2020-01-30 , DOI: 10.1038/s41467-020-14477-9 Zhen Lin 1 , Yuan Li 2, 3 , Zhengjing Zhang 1 , Xiaolei Liu 1 , Chuan-Chih Hsu 1, 4 , Yanyan Du 1 , Tian Sang 1 , Chen Zhu 1 , Yubei Wang 1 , Viswanathan Satheesh 1 , Pritu Pratibha 1 , Yang Zhao 1 , Chun-Peng Song 5 , W Andy Tao 6, 7 , Jian-Kang Zhu 1, 3 , Pengcheng Wang 1
Affiliation
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Osmoregulation is important for plant growth, development and response to environmental changes. SNF1-related protein kinase 2s (SnRK2s) are quickly activated by osmotic stress and are central components in osmotic stress and abscisic acid (ABA) signaling pathways; however, the upstream components required for SnRK2 activation and early osmotic stress signaling are still unknown. Here, we report a critical role for B2, B3 and B4 subfamilies of Raf-like kinases (RAFs) in early osmotic stress as well as ABA signaling in Arabidopsis thaliana. B2, B3 and B4 RAFs are quickly activated by osmotic stress and are required for phosphorylation and activation of SnRK2s. Analyses of high-order mutants of RAFs reveal critical roles of the RAFs in osmotic stress tolerance and ABA responses as well as in growth and development. Our findings uncover a kinase cascade mediating osmoregulation in higher plants.
中文翻译：
RAF-SnRK2激酶级联介导高等植物中的早期渗透胁迫信号转导。
渗透调节对于植物生长，发育和对环境变化的响应很重要。SNF1相关的蛋白激酶2s（SnRK2s）被渗透胁迫快速激活，并且是渗透胁迫和脱落酸（ABA）信号通路中的重要组成部分。然而，SnRK2激活和早期渗透应激信号传导所需的上游组件仍然未知。在这里，我们报道了Raf样激酶（RAFs）的B2，B3和B4亚家族在早期渗透胁迫以及拟南芥中的ABA信号传导中的关键作用。B2，B3和B4 RAF通过渗透胁迫快速激活，是SnRK2s磷酸化和激活所必需的。对RAF的高阶突变体的分析揭示了RAF在渗透胁迫耐受性和ABA响应以及生长和发育中的关键作用。
更新日期：2020-01-31
中文翻译：
RAF-SnRK2激酶级联介导高等植物中的早期渗透胁迫信号转导。
渗透调节对于植物生长，发育和对环境变化的响应很重要。SNF1相关的蛋白激酶2s（SnRK2s）被渗透胁迫快速激活，并且是渗透胁迫和脱落酸（ABA）信号通路中的重要组成部分。然而，SnRK2激活和早期渗透应激信号传导所需的上游组件仍然未知。在这里，我们报道了Raf样激酶（RAFs）的B2，B3和B4亚家族在早期渗透胁迫以及拟南芥中的ABA信号传导中的关键作用。B2，B3和B4 RAF通过渗透胁迫快速激活，是SnRK2s磷酸化和激活所必需的。对RAF的高阶突变体的分析揭示了RAF在渗透胁迫耐受性和ABA响应以及生长和发育中的关键作用。
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