Ali Nusrat, Réthoré Elise, Yvin Jean-Claude, Hosseini Seyed Abdollah
Centre Mondial de l'Innovation Roullier, Laboratoire de Nutrition Végétale, Pôle Stress Abiotiques, 18 avenue Franklin Roosevelt, 35400 Saint-Malo, France.
Plants (Basel). 2020 Dec 15;9(12):1779. doi: 10.3390/plants9121779.
It has been long recognized that silicon (Si) plays important roles in plant productivity by improving mineral nutrition deficiencies. Despite the fact that Si is considered as 'quasi-essential', the positive effect of Si has mostly been described in resistance to biotic and tolerance to abiotic stresses. During the last decade, much effort has been aimed at linking the positive effects of Si under nutrient deficiency or heavy metal toxicity (HM). These studies highlight the positive effect of Si on biomass production, by maintaining photosynthetic machinery, decreasing transpiration rate and stomatal conductance, and regulating uptake and root to shoot translocation of nutrients as well as reducing oxidative stress. The mechanisms of these inputs and the processes driving the alterations in plant adaptation to nutritional stress are, however, largely unknown. In this review, we focus on the interaction of Si and macronutrient (MaN) deficiencies or micro-nutrient (MiN) deficiency, summarizing the current knowledge in numerous research fields that can improve our understanding of the mechanisms underpinning this cross-talk. To this end, we discuss the gap in Si nutrition and propose a working model to explain the responses of individual MaN or MiN disorders and their mutual responses to Si supplementation.
长期以来，人们已经认识到硅（Si）通过改善矿物质营养缺乏状况，在植物生产力方面发挥着重要作用。尽管硅被认为是“准必需元素”，但其积极作用大多体现在对生物胁迫的抗性和对非生物胁迫的耐受性方面。在过去十年中，人们付出了很多努力来研究硅在营养缺乏或重金属毒性（HM）情况下的积极作用。这些研究强调了硅对生物量生产的积极影响，包括维持光合机制、降低蒸腾速率和气孔导度、调节养分的吸收和从根到地上部的转运以及减轻氧化应激。然而，这些作用的机制以及驱动植物适应营养胁迫变化的过程在很大程度上尚不清楚。在本综述中，我们关注硅与大量元素（MaN）缺乏或微量元素（MiN）缺乏之间的相互作用，总结众多研究领域的现有知识，以增进我们对这种相互作用背后机制的理解。为此，我们讨论了硅营养方面的差距，并提出一个工作模型来解释个体MaN或MiN紊乱的反应以及它们对硅补充的相互反应。
