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1597325 
Journal Article 
Effect of silicate supplementation on the alleviation of arsenite toxicity in 93-11 (Oryza sativa L. indica) 
Hu, H; Zhang, J; Wang, H; Li, R; Pan, F; Wu, J; Feng, Y; Ying, Y; Liu, Q 
In Press 
Yes 
Environmental Science and Pollution Research
ISSN: 0944-1344
EISSN: 1614-7499 
20 
12 
8579-8589 
English 
Chronic exposure to arsenic (As) in rice has raised many health and environmental problems. As reported, great variation exists among different rice genotypes in As uptake, translocation, and accumulation. Under hydroponic culture, we find that the Chinese wild rice (Oryza rufipogon; acc. 104624) takes up the most arsenic among tested genotypes. Of the cultivated rice, the indica cv. 93-11 has the lowest arsenic translocation factor value but accumulates the maximum concentration of arsenic followed by Nipponbare, Minghui 86, and Zhonghua 11. Higher level of arsenite concentration (50 μM) can induce extensive photosynthesis and root growth inhibition, and cause severe oxidative stress. Interestingly, external silicate (Si) supplementation has significantly increased the net photosynthetic rate, and promoted root elongation, as well as strongly ameliorated the oxidative stress by increasing the activities of antioxidant enzymes superoxide dismutase, ascorbate peroxidase, and peroxidase in roots and/or leaves of 93-11 seedlings. Notably, 1.873 mM concentration of Si considerably decreases the total As uptake and As content in roots, but significantly increases the As translocation from roots to shoots. In contrast, Si supplementation with 1.0 mM concentration significantly increases the total As uptake and As concentrations in roots and shoots of 93-11 seedlings after 50 μM arsenite treatment for 6 days. 
Arsenite; Silicate; Rice; Antioxidant enzymes 
• Arsenic Hazard ID
          PubMed
          Considered New
          PubMed
          ToxNet
          Considered New
          PubMed
          WOS
          ToxNet
          Excluded
               Toxnet Duplicates
     2. Lit Search Updates through Oct 2015
          PubMed
          WOS
          ToxNet
          Considered
     7. Other Studies through Oct 2015
          Ecology
• Arsenic (Inorganic)
     1. Literature
          Lit search updates through Oct 2015
     3. Hazard ID Screening
          Other potentially supporting studies
NAAQS
• ISA-Ozone (2020 Final Project Page)
     Literature Search Results
     Literature Search - Included
          Citation Mapping
               Ecology
     Title-Abstract Screening (SWIFT-AS) - Excluded
          SWIFT-AS Excluded