Gorgues Lucille, Li Xuelian, Maurel Christophe, Martinière Alexandre, Nacry Philippe
IPSiM, CNRS, INRAE, Institut Agro, Univ Montpellier, 34060, Montpellier, France.
Stress Biol. 2022 Sep 5;2(1):36. doi: 10.1007/s44154-022-00054-1.
Plants face a constantly changing environment, requiring fine tuning of their growth and development. Plants have therefore developed numerous mechanisms to cope with environmental stress conditions. One striking example is root response to water deficit. Upon drought (which causes osmotic stress to cells), plants can among other responses alter locally their root system architecture (hydropatterning) or orientate their root growth to optimize water uptake (hydrotropism). They can also modify their hydraulic properties, metabolism and development coordinately at the whole root and plant levels. Upstream of these developmental and physiological changes, plant roots must perceive and transduce signals for water availability. Here, we review current knowledge on plant osmotic perception and discuss how long distance signaling can play a role in signal integration, leading to the great phenotypic plasticity of roots and plant development.
植物面临着不断变化的环境，这就需要对其生长和发育进行精细调节。因此，植物已经进化出多种机制来应对环境胁迫条件。一个显著的例子是根系对水分亏缺的响应。在干旱（这会给细胞造成渗透胁迫）时，植物除了其他反应外，还可以局部改变其根系结构（水分模式形成），或者使根系生长定向以优化水分吸收（向水性）。它们还可以在整个根系和植株水平上协调改变其水力特性、代谢和发育。在这些发育和生理变化的上游，植物根系必须感知并传递水分可利用性的信号。在这里，我们综述了关于植物渗透感知的现有知识，并讨论了长距离信号传导如何在信号整合中发挥作用，从而导致根系和植物发育具有巨大的表型可塑性。
