Identification of novel transporters involved in toxic metals

我们鉴定了几个与镉、砷和铝等有毒金属的积累和解毒有关的转运蛋白基因。从Cd超积累菌中分离出的TcHMA3是耐高Cd所必需的，水稻中的OsHMA3参与了Cd在籽粒中的积累。我们还发现，Lsi1，一个硅内流转运体，能够运输甲基化的砷(DMA和MMA)。此外，我们还发现了一些与水稻、拟南芥和荞麦耐铝相关的新的转运蛋白基因。

We identified several transporter genes involved in accumulation and detoxification of toxic metals including Cd, As and Al. TcHMA3 isolated from a Cd hyperaccumulator is required for tolerating high Cd and OsHMA3 from rice is involved in Cd accumulation in grain. We also found that Lsi1, a silicon influx transporter, is able to transport methylated arsenic(DMA and MMA). Furthermore, we have identified several novel transporter genes involved in Al tolerance in rice, Arabidopsis and buckwheat.