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 concern, in 2001, the Codex Committee on ...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 concern, 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 con- centration in soybean grain （Codex Alimentrius Commission, 2001）. There are cultivar differences in seed Cd concentration in soybean and some cultivars accumulate high Cd concen- trations in seed when grown on Cd-contaminated soils （Arao et al., 2003）. These cultivars can exceed the proposed Codex upper limit. Cdal, a major gene controlling seed Cd accumu- lation, has been mapped on linkage group K by Jegadeesan et al. （2010）. The molecular mechanism of the Cdal gene underlyincl Cd accumulation in soybean seed is unknown.展开更多
文摘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 concern, 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 con- centration in soybean grain （Codex Alimentrius Commission, 2001）. There are cultivar differences in seed Cd concentration in soybean and some cultivars accumulate high Cd concen- trations in seed when grown on Cd-contaminated soils （Arao et al., 2003）. These cultivars can exceed the proposed Codex upper limit. Cdal, a major gene controlling seed Cd accumu- lation, has been mapped on linkage group K by Jegadeesan et al. （2010）. The molecular mechanism of the Cdal gene underlyincl Cd accumulation in soybean seed is unknown.
