植物对铜的吸收运输及毒害机理研究进展  

Mechanisms of Copper Uptake,Transportation and Detoxification in Plants

作　　者：田生科[1] 李廷轩[1] 杨肖娥[2] 卢玲丽[2] 彭红云[2] 

机构地区：[1]四川农业大学资源与环境学院,四川雅安625014 [2]浙江大学环境与资源学院,浙江杭州310029

出　　处：《土壤通报》2006年第2期387-394,共8页Chinese Journal of Soil Science

基　　金：国家重点基础研究发展规划"973"项目(2002CB410804)

摘　　要：铜是植物生长发育必需的微量元素,但过量的铜对植物有毒害效应。因而植物体在长期的进化过程中形成了一套内稳态机制来调控铜离子在细胞中的浓度;既能满足细胞正常代谢对铜的需求又要使细胞免受铜毒害。植物对铜内稳态机理主要涉及植物对铜运输、螯合和区室化作用等方面,以此来达到对铜离子的吸收、分配和解毒的功能。本文综述了植物对铜的吸收运输与解毒的最新进展。Copper is an essential micronutrient for plant metabolism, but it becomes extremely toxic when presenting in excessive amount. Thus, plants evolve mechanisms to detoxify Cu in the cell by approaches of cellular homeostasis. Plants have the ability to maintain optimal concentrations of copper ions in metabolic parts of the cells . A regulated network of copper transport, chelation and sequestration provides the uptake, distribution and detoxification of copper ions. This review focuses on the recent advances in our understanding of mechanisms of copper uptake, transportation, and detoxification in higher plants.

关 键 词：铜 运输 耐性 解毒 

分 类 号：Q148[生物学—生态学] S154[生物学—普通生物学]