Institut für Biologie und Biotechnologie der Pflanzen, WWU Münster, Münster, Germany.
Department of Botany & Microbiology, College of Science, King Saud University, Riyadh, Saudi Arabia.
Plant Biol (Stuttg). 2019 Jan;21 Suppl 1:39-48. doi: 10.1111/plb.12704. Epub 2018 Mar 8.
Soil salinity adversely affects plant growth, crop yield and the composition of ecosystems. Salinity stress impacts plants by combined effects of Na toxicity and osmotic perturbation. Plants have evolved elaborate mechanisms to counteract the detrimental consequences of salinity. Here we reflect on recent advances in our understanding of plant salt tolerance mechanisms. We discuss the embedding of the salt tolerance-mediating SOS pathway in plant hormonal and developmental adaptation. Moreover, we review newly accumulating evidence indicating a crucial role of a transpiration-dependent salinity tolerance pathway, that is centred around the function of the NADPH oxidase RBOHF and its role in endodermal and Casparian strip differentiation. Together, these data suggest a unifying and coordinating role for Ca signalling in combating salinity stress at the cellular and organismal level.
土壤盐度会对植物生长、作物产量和生态系统组成产生不利影响。盐胁迫通过钠毒性和渗透胁迫的综合作用影响植物。植物已经进化出了精细的机制来对抗盐度的不利影响。在这里，我们反思了我们对植物耐盐机制理解的最新进展。我们讨论了盐耐受介导的 SOS 途径在植物激素和发育适应中的嵌入。此外，我们还回顾了新积累的证据，表明蒸腾依赖性耐盐途径在 NADPH 氧化酶 RBOHF 的功能及其在内皮层和凯氏带分化中的作用方面起着关键作用。这些数据表明，钙信号在细胞和生物体水平上对抗盐胁迫具有统一和协调的作用。
