查看文章

Arsenic (As) contamination is a serious hazard to human health and agriculture. It has emerged as an important threat for rice cultivation mainly in South Asian countries. In this study, we investigated the effect of iron (Fe) supplementation on arsenic (As^V) induced oxidative stress responses in rice (Oryza sativa L.). Rice seedlings treated with As^V for 24 and 48 h in presence or absence of 2.5 mM Fe after which the root and shoot tissues were harvested for analysis. The results indicate significant (p ≤ 0.05) reduction in root and shoot length/dry biomass. Supplementation of Fe showed improved growth responses under stress as compared to As^V alone. The scanning electron microscopy (SEM) analysis of roots under As^V treatment for 48 h showed major alterations in root structure and integrity, although no noticeable changes were observed in Fe – supplemented seedlings. Significantly high (p ≤ 0.05 …