转mMT-I基因F_3代烟草金属结合特性研究

METAL COMBINING CHARACTERISTIC OF TRANSGENIC mMT-I F 3 GENERATION TOBACCO PLANTS

研究表明，转ｍＭＴ－Ｉ基因Ｆ３代烟草金属结合特性有以下４点：①单元素处理转基因烟草元素吸收量远远大于多元素处理，并且比对照烟草能结合更多的金属；②混合元素处理的方差分析结果显示，转基因烟草根及茎叶中的Ｃｄ、Ｚｎ和Ｃｕ含量均比对照烟草高，以Ｃｄ的吸收最显著；③在酸性土壤中，转基因烟草吸收Ｃｄ、Ｚｎ的量大于碱性土壤，Ｃｕ则相反，在中性土壤中吸收量最高；

There are four aspects of metal combining characteristics of transgenic MT-I F 3 generation tobacco plants. ① The atom absorption of single element treated transgenic tobacco plants is much more than of the multi element treated ones. They also combine more metal elements than the controls. ② The result of the mean square deviation analysis of the mixed elements treated show that Cd、Zn and Cu content in the root and stem leaf of transgenic tobacco plants was more than in controls, the absorption of Cd being the most marked. ③ The quantity of Cd and Zn absorbed in acidic soil was more than in basic soil and the opposite for Cu. ④ The quantity of metal combined by the transgenic tobacco plants increases with the rise of MT content.