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Arsenic influence on genetic variation in grain trace-element nutrient content in Bengal delta grown rice

Norton, G.J.; Dasgupta, T.; Islam, M.R.; Islam, S.; Deacon, C.M.; Zhao, F.-J.; Stroud, J.L.; McGrath, S.P.; Feldmann, J.; Price, A.H.; Meharg, A.A.

Environmental Science and Technology 44(21): 8284-8288

2010


ISSN/ISBN: 1520-5851
PMID: 21028809
DOI: 10.1021/es101487x
Accession: 051636827

It has previously been shown that across different arsenic (As) soil environments, a decrease in grain selenium (Se), zinc (Zn), and nickel (Ni) concentrations is associated with an increase in grain As. In this study we aim to determine if there is a genetic element for this observation or if it is driven by the soil As environment. To determine the genetic and environmental effect on grain element composition, multielement analysis using ICP-MS was performed on rice grain from a range of rice cultivars grown in 4 different field sites (2 in Bangladesh and 2 in West Bengal). At all four sites a negative correlation was observed between grain As and grain Ni, while at three of the four sites a negative correlation was observed between grain As and grain Se and grain copper (Cu). For manganese, Ni, Cu, and Se there was also a significant genetic interaction with grain arsenic indicating some cultivars are more strongly affected by arsenic than others.

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