Zinc Oxide Nanoparticles Application Alleviates Arsenic (As) Toxicity in Soybean Plants by Restricting the Uptake of as and Modulating Key Biochemical Attributes, Antioxidant Enzymes, Ascorbate-Glutathione Cycle and Glyoxalase System

Plants

Parvaiz Ahmad¹  MohammedNasser Alyemeni¹  MoneerahA. Alqahtani¹  AsmaA. Al-Huqail¹  Leonard Wijaya¹  Andrzej Bajguz²  Cengiz Kaya³  Muhammad Ashraf⁴ 

[1] Botany and Microbiology Department, College of Science, King Saud University, 11451 Riyadh, Saudi Arabia;Department of Biology and Ecology of Plants, Faculty of Biology, University of Bialystok, 15-245 Bialystok, Poland;Soil Science and Plant Nutrition Department, Agriculture Faculty, Harran University, 63210 Sanliurfa, Turkey;University of Agriculture Faisalabad, Faisalabad 38040, Pakistan;

关键词: arsenic stress;    soybean;    growth;    antioxidant enzymes;    ascorbate–glutathione cycle;    glyoxalase system;   

DOI  :  10.3390/plants9070825

来源: DOAJ

【 摘 要 】

Accumulation of arsenic (As) in soils is increasing consistently day-by-day, which has resulted in increased toxicity of this element in various crop plants. Arsenic interferes with several plant metabolic processes at molecular, biochemical and physiological levels, which result in reduced plant productivity. Hence, the introduction of novel ameliorating agents to combat this situation is the need of the hour. The present study was designed to examine the effect of zinc oxide nanoparticles (ZnO–NPs) in As-stressed soybean plants. Various plant growth factors and enzymes were studied at varying concentrations of As and ZnO–NPs. Our results showed that with the application of ZnO–NPs, As concentration declined in both root and shoot of soybean plants. The lengths of shoot and root, net photosynthetic rate, transpiration, stomatal conductance, photochemical yield and other factors declined with an increase in external As level. However, the application of ZnO–NPs to the As-stressed soybean plants resulted in a considerable increase in these factors. Moreover, the enzymes involved in the ascorbate–glutathione cycle including superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX) and glutathione reductase (GR) showed a significant increase in their activity with the application of ZnO–NPs to the As-stressed plants. Hence, our study confirms the significance of ZnO–NPs in alleviating the toxicity of As in soybean plants.

【 授权许可】

Unknown