Dabravolski Siarhei A, Isayenkov Stanislav V
Department of Biotechnology Engineering, Braude Academic College of Engineering, Snunit 51, Karmiel 2161002, Israel.
International Research Centre for Environmental Membrane Biology, Foshan University, Foshan 528000, China.
Plants (Basel). 2024 Feb 15;13(4):525. doi: 10.3390/plants13040525.
Salinity is one of the most common abiotic stress factors affecting different biochemical and physiological processes in plants, inhibiting plant growth, and greatly reducing productivity. During the last decade, silicon (Si) supplementation was intensively studied and now is proposed as one of the most convincing methods to improve plant tolerance to salt stress. In this review, we discuss recent papers investigating the role of Si in modulating molecular, biochemical, and physiological processes that are negatively affected by high salinity. Although multiple reports have demonstrated the beneficial effects of Si application in mitigating salt stress, the exact molecular mechanism underlying these effects is not yet well understood. In this review, we focus on the localisation of Si transporters and the mechanism of Si uptake, accumulation, and deposition to understand the role of Si in various relevant physiological processes. Further, we discuss the role of Si supplementation in antioxidant response, maintenance of photosynthesis efficiency, and production of osmoprotectants. Additionally, we highlight crosstalk of Si with other ions, lignin, and phytohormones. Finally, we suggest some directions for future work, which could improve our understanding of the role of Si in plants under salt stress.
盐度是影响植物不同生化和生理过程的最常见非生物胁迫因素之一，它抑制植物生长，并大幅降低生产力。在过去十年中，硅（Si）添加受到了深入研究，现在被认为是提高植物耐盐胁迫能力最具说服力的方法之一。在这篇综述中，我们讨论了最近研究硅在调节受高盐度负面影响的分子、生化和生理过程中作用的论文。尽管多项报告已证明施用硅在减轻盐胁迫方面的有益效果，但其作用的确切分子机制尚未完全清楚。在这篇综述中，我们重点关注硅转运蛋白的定位以及硅的吸收、积累和沉积机制，以了解硅在各种相关生理过程中的作用。此外，我们讨论了添加硅在抗氧化反应、维持光合作用效率和渗透保护剂产生中的作用。此外，我们强调了硅与其他离子、木质素和植物激素之间的相互作用。最后，我们提出了一些未来工作的方向，这可能会增进我们对盐胁迫下硅在植物中作用的理解。
