Functional analysis of potassium transporters interacting with SnRK2 protein kinases in Arabidopsis.

SnRK2家族是植物细胞胁迫反应的重要信号因子。本研究通过酵母双杂交分析筛选SnRK2的相互作用伙伴，分离出两个钾转运蛋白样蛋白。为了研究它们的功能，我们建立了拟南芥基因敲除突变体，并检查了突变体的表型变化。这些突变体在盐胁迫下表现出显著的钾吸收变化。研究结果表明，SnRK2和钾转运蛋白共同参与了根组织的胁迫反应。

SnRK2 family act as an important signaling factor for stress responses in plant cells. Here, we screened interacting partners of SnRK2 by yeast two-hybrid analysis, and isolated two potassium transporter-like proteins. To investigate their functions, we established Arabidopsis knockout mutants and checked any phenotypic changes in the mutants. These mutants showed a significant changes in potassium uptake under salt stress. Our results suggested SnRK2 and potassium transporters cooperatively functions in stress responses in root tissues.