Plants are exposed to an ever-changing environment to which they have to adjust accordingly. Their response is tightly regulated by complex signaling pathways that all start with stimulus perception. Here, we give an overview of the latest developments in the perception of various abiotic stresses, including drought, salinity, flooding, and temperature stress. We discuss whether proposed perception mechanisms are true sensors, which is well established for some abiotic factors but not yet fully elucidated for others. In addition, we review the downstream cellular responses, many of which are shared by various stresses but result in stress-specific physiological and developmental output. New sensing mechanisms have been identified, including heat sensing by the photoreceptor phytochrome B, salt sensing by glycosylinositol phosphorylceramide sphingolipids, and drought sensing by the specific calcium influx channel OSCA1. The simultaneous occurrence of multiple stress conditions shows characteristic downstream signaling signatures that were previously considered general signaling responses. The integration of sensing of multiple stress conditions and subsequent signaling responses is a promising venue for future research to improve the understanding of plant abiotic stress perception.

植物处于不断变化的环境中，必须对其进行相应的调整。它们的反应受到复杂的信号通路的严格调节，这些信号通路均始于刺激感知。在这里，我们概述了对各种非生物胁迫（包括干旱，盐度，洪水和温度胁迫）的最新认识。我们讨论了提议的感知机制是否是真正的传感器，对于某些非生物因素已经建立了良好的传感器，但对于其他非生物因素尚未完全阐明。此外，我们审查了下游细胞的反应，其中许多是由各种压力所共享，但会导致压力特定的生理和发育输出。已经确定了新的传感机制，包括通过感光细胞色素B的热传感，通过糖基肌醇磷酸神经酰胺鞘氨醇盐进行盐感测，通过特定的钙流入通道OSCA1进行干旱感测。多个压力条件的同时出现显示了特征性的下游信号特征，这些特征以前被认为是一般的信号反应。多种胁迫条件的感知和后续信号响应的整合是未来研究的有前途的场所，以提高对植物非生物胁迫感知的理解。