Silicon nanoparticles alleviate arsenic toxicity in rice (Oryza sativa L.)
Publish place: Journal of Plant Physiology and Breeding، Vol: 12، Issue: 1
Publish Year: 1401
نوع سند: مقاله ژورنالی
زبان: English
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JR_BREDNG-12-1_007
تاریخ نمایه سازی: 11 آذر 1402
Abstract:
Arsenic (As) is one of the most hazardous metalloids for plants, however, little is understood about the role of silicon nanoparticles (Si-NPs) in improving rice tolerance under As toxicity. An experiment was conducted in ۲۰۲۰ at Islamshahr Branch, Islamic Azad University, Islamshahr, Iran, to examine the impacts of As (۵۰ M) and Si-NPs (۵۰ and ۱۰۰ mg/L) on rice growth, chlorophyll and proline metabolism, antioxidant defense system, ionic homeostasis, and expression of Si/As transporters under hydroponic conditions. The results showed that Si-NPs by boosting the activities of antioxidant enzymes, diminished hydrogen peroxide and superoxide anion, and hence, protected the photosynthetic apparatus and enhanced plant growth during As toxicity. Si-NPs increased Si uptake and declined As uptake in As-treated seedlings by adjusting the relative expression of Si/As transporters (Lsi۱, Lsi۲, Lsi۶). Si-NPs maintained ionic homeostasis under As stress by increasing the uptake of mineral nutrients. In general, Si-NPs increased rice growth and biomass during As toxicity, which might be exploited to develop effective fertilizers to improve crop growth and yield in As-contaminated areas.
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Authors
Tahereh Kiany
Department of Biology, Islamshahr Branch, Islamic Azad University, Islamshahr, Iran
Leila Pishkar
Department of Biology, Islamshahr Branch, Islamic Azad University, Islamshahr, Iran
Nasrin Sartipnia
Department of Biology, Islamshahr Branch, Islamic Azad University, Islamshahr, Iran
Alireza Iranbakhsh
Department of Biology, Science and Research Branch, Islamic Azad University, Teheran, Iran
Giti Barzin
Department of Biology, Islamshahr Branch, Islamic Azad University, Islamshahr, Iran
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