Department of Biosciences, Integral University, Lucknow, India.
Department of Botany, Jamia Hamdard, New Delhi, India.
Chemosphere. 2022 Jan;287(Pt 2):132142. doi: 10.1016/j.chemosphere.2021.132142. Epub 2021 Sep 10.
Green synthesis of nanoparticles (NPs) is competent in inducing physiological responses in plants for combating the abiotic stresses. Considering this, salt stress is one of the most alarming conditions that exerts complex and polygenic impacts on morph-physiological functioning of plants; resulting in reduced crop productivity and yield. Therefore, understanding the salt responses and tolerance mechanisms are important for sustaining crop productivity. In the current study, we have examined the effects of biosynthesized gold nanoparticles (AuNPs) on wheat (Triticum aestivum) plants under salt stress. Green-synthesized AuNPs were found beneficial in modulating the K/Na ratio, chlorophyll concentration, defense systems, nitrogen assimilation, stomatal dynamics and growth traits under salt stress condition. Furthermore, the excessive accumulation of oxidative stress markers including reactive oxygen/nitrogen species was controlled in response of AuNPs treatment under salt stress. Overall, modulation of these traits commanded to induce salt stress tolerance in wheat plants.
纳米粒子（NPs）的绿色合成能够在植物中诱导生理反应，以对抗非生物胁迫。考虑到这一点，盐胁迫是对植物形态-生理功能施加复杂和多基因影响的最令人担忧的条件之一；导致作物生产力和产量下降。因此，了解盐响应和耐受机制对于维持作物生产力很重要。在本研究中，我们研究了生物合成的金纳米粒子（AuNPs）在盐胁迫下对小麦（Triticum aestivum）植物的影响。绿色合成的 AuNPs 被发现有利于在盐胁迫条件下调节 K/Na 比、叶绿素浓度、防御系统、氮同化、气孔动态和生长特性。此外，在盐胁迫下，AuNPs 处理可以控制活性氧/氮物种等氧化应激标志物的过度积累。总的来说，这些性状的调节有助于诱导小麦植株的耐盐性。
