| 摘要: |
| 土壤重金属污染已经成为一个全球性问题。重金属超积累植物在修复土壤重金属污染中具有重要的应用前景。重金属超积累植物通常具备三个基本特征,即：根系具有从土壤中吸收重金属的强大能力、能从根到地上部分高效转运重金属、在叶片中能解毒和隔离大量重金属。本文总结了重金属超积累植物吸收、转运、隔离和解毒重金属的生理机制研究进展，以期为进一步阐明植物超积累重金属的机制及其在植物修复中的应用提供参考。 |
| 关键词: 重金属 超积累植物 植物修复 吸收 转运 解毒 隔离 |
| DOI：10.14188/j.ajsh.2019.04.002 |
| 分类号:Q945.78 |
| 基金项目:国家自然科学基金面上项目 31671601;湖南省教育厅科学研究重点项目 16A223;湖南省教育厅科学研究创新平台开放基金项目 17K035国家自然科学基金面上项目（编号：31671601）；湖南省教育厅科学研究重点项目（编号：16A223）；湖南省教育厅科学研究创新平台开放基金项目（编号：17K035）。 |
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| Advances in physiological mechanisms of heavy metal hyperaccumulation by plants |
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XUE Huan1,LIU Zhixiang1,2,3,YAN Mingli4
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1.Hunan Provincial Key Laboratory of Forestry Biotechnology, Central South University of Forestry and Technology, Changsha 410004, Hunan, China;2.International Cooperation Base of Science and Technology Innovation on Forestry Resource Biotechnology of Hunan Province, Central South University of Forestry and Technology, Changsha 410004, Hunan, China;3.Hunan Provincial Key Laboratory for Control of Forest Diseases and Pests, Central South University of Forestry and Technology, Changsha 410004, Hunan, China;4.College of Life Science, Hunan University of Science and Technology, Xiangtan 411201, Hunan, China
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| Abstract: |
| Heavy metal pollution in soil has become a global problem. Heavy metal hyperaccumulators have important application prospects in phytoremediation. They usually have the following three basic characteristics: the strong ability of roots to absorb heavy metals from the soil, efficient transportation of heavy metals from the roots to the aboveground parts, detoxification and isolation of large amounts of heavy metals in the leaves. This paper summarizes the research progress on the physiological mechanism of the absorption, transportation, isolation and detoxification of heavy metals in hyperaccumulating plants, in order to further elucidate the mechanism of heavy metal hyperaccumulation by plants and provide reference for its application in phytoremediation. |
| Key words: heavy metal hyperaccumulator phytoremediation absorption transportation detoxification sequestration |
