Environmental and genetic control of arsenic accumulation and speciation in rice grain: comparing a range of common cultivars grown in contaminated sites across Bangladesh, China, and India.

Environmental Science & Technology
Gareth J NortonAndrew A Meharg

Abstract

The concentration of arsenic (As) in rice grains has been identified as a risk to human health. The high proportion of inorganic species of As (As(i)) is of particular concern as it is a nonthreshold, class 1 human carcinogen. To be able to breed rice with low grain As, an understanding of genetic variation and the effect of different environments on genetic variation is needed. In this study, 13 cultivars grown at two field sites each in Bangladesh, India, and China are evaluated for grain As. There was a significant site, genotype, and site by genotype interaction for total grain As. Correlations were observed only between sites in Bangladesh and India, not between countries or within the Chinese sites. For seven cultivars the As was speciated which revealed significant effects of site, genotype, and site by genotype interaction for percentage As(i). Breeding low grain As cultivars that will have consistently low grain As and low As(i), over multiple environments using traditional breeding approaches may be difficult, although CT9993-5-10-1-M, Lemont, Azucena, and Te-qing in general had low grain As across the field sites.

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Sep 8, 2009·Environmental Science & Technology·Gareth J NortonAndrew A Meharg

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Citations

Nov 10, 2012·Archives of Environmental Contamination and Toxicology·Richa DaveRudra Deo Tripathi
May 31, 2013·Environmental Geochemistry and Health·Pengjie HuPeter Christie
Nov 30, 2012·Molecular Biology Reports·Patrik MészárosIldikó Matušíková
Sep 6, 2013·Environmental Science and Pollution Research International·Chuan WuMing Hung Wong
Feb 23, 2012·Environmental Science & Technology·Dipti HalderProsun Bhattacharya
Jul 7, 2012·Environmental Science & Technology·Antonino SpanuGavino Sanna
Dec 4, 2012·Environmental Science & Technology·Dipti HalderProsun Bhattacharya
Mar 26, 2013·Environmental Science & Technology·Fang-Jie ZhaoAndrew A Meharg
May 15, 2013·Environmental Science & Technology·Andrew A MehargM Rafiqul Islam
Oct 2, 2013·Journal of Agricultural and Food Chemistry·Rima JuskelisJack C Cappozzo
Feb 18, 2012·Environmental Health Perspectives·Brian P JacksonKathryn L Cottingham
Feb 11, 2014·Journal of Environmental Management·Shahedur RahmanDipak Kumar Paul
Dec 14, 2011·Analytical and Bioanalytical Chemistry·Anne-Marie CareyAndrew A Meharg
Mar 3, 2010·Annual Review of Plant Biology·Fang-Jie ZhaoAndrew A Meharg
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Nov 18, 2017·Environmental Monitoring and Assessment·Ha-Il JungYoo-Hak Kim
Dec 5, 2014·Metallomics : Integrated Biometal Science·Deepika SharmaPrabodh Kumar Trivedi

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