【摘 要】
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Dear Editor,Soybean can absorb and accumulate Cd from soils in their seed.Consumption,either directly or indirectly,of seed with high levels of Cd could be a hu
【机 构】
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Greenhouse and Processing Crops Research Centre, Agriculture and Agri-Food Canada, 2585 County Road
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Dear Editor,Soybean can absorb and accumulate Cd from soils in their seed.Consumption,either directly or indirectly,of seed with high levels of Cd could be a human health conce.In 2001,the Codex Committee on Food Additives and Contaminants of the Codex Alimentarius Commission established by the Food and Agriculture Organization and the World Health Organization proposed an upper limit of 0.2 mg kg-1 Cd concentration in soybean grain (Codex Alimentrius Commission,2001).There are cultivar differences in seed Cd concentration in soybean and some cultivars accumulate high Cd concentrations in seed when grown on Cd-contaminated soils (Arao et al.,2003).These cultivars can exceed the proposed Codex upper limit.Cda1,a major gene controlling seed Cd accumulation,has been mapped on linkage group K by Jegadeesan et al.(2010).The molecular mechanism of the Cda1 gene underlying Cd accumulation in soybean seed is unknown.
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