Gigli-Bisceglia Nora, Testerink Christa
Laboratory of Plant Physiology, Wageningen University and Research, Wageningen, 6708 PB, the Netherlands.
Curr Opin Plant Biol. 2021 Dec;64:102120. doi: 10.1016/j.pbi.2021.102120. Epub 2021 Nov 30.
Plants react to a myriad of biotic and abiotic environmental signals through specific cellular mechanisms required for survival under stress. Although pathogen perception has been widely studied and characterized, salt stress perception and signaling remain largely elusive. Recent observations, obtained in the model plant Arabidopsis thaliana, show that perception of specific features of pathogens also allows plants to mount salt stress resilience pathways, highlighting the possibility that salt sensing and pathogen perception mechanisms partially overlap. We discuss these overlapping strategies and examine the emerging role of A. thaliana cell wall and plasma membrane components in activating both salt- and pathogen-induced responses, as part of exquisite mechanisms underlying perception of damage and danger. This knowledge helps understanding the complexity of plant responses to pathogens and salinity, leading to new hypotheses that could explain why plants evolved similar strategies to respond to these, at first sight, very different types of stimuli.
植物通过在胁迫下生存所需的特定细胞机制对无数生物和非生物环境信号做出反应。尽管病原体感知已得到广泛研究和表征，但盐胁迫感知和信号传导在很大程度上仍然难以捉摸。最近在模式植物拟南芥中获得的观察结果表明，对病原体特定特征的感知也使植物能够启动盐胁迫抗性途径，这突出了盐感知和病原体感知机制部分重叠的可能性。我们讨论了这些重叠策略，并研究了拟南芥细胞壁和质膜成分在激活盐诱导和病原体诱导反应中的新作用，这是损伤和危险感知精细机制的一部分。这些知识有助于理解植物对病原体和盐度反应的复杂性，从而产生新的假设，解释为什么植物进化出相似的策略来应对乍一看非常不同类型的刺激。
