| 超积累植物吸收重金属的生理及分子机制 |
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| 引用本文： | 杨肖娥,龙新宪,倪吾钟. 超积累植物吸收重金属的生理及分子机制[J]. 植物营养与肥料学报, 2002, 8(1): 8-15. DOI: 10.11674/zwyf.2002.0102 |
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| 作者姓名： | 杨肖娥 龙新宪 倪吾钟 |
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| 作者单位： | 1.浙江大学环境与资源学院农业化学研究所 浙江杭州310029 |
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| 基金项目： | 国家杰出青年基金(39925024)资助. |
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| 摘 要： | 超积累植物从根际吸收重金属 ,并将其转移和积累到地上部 ,这一过程包括跨根细胞质膜运输、从根表皮细胞向中柱的横向运输、从根系的中柱薄壁细胞装载到木质部导管、木质部长途运输、从木质部卸载到叶细胞 (跨叶细胞膜运输 )、跨叶细胞的液泡膜运输等主要环节和调控位点。本文就近十年来这方面的研究进展作一综述
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| 关 键 词： | 超积累植物 重金属 吸收 |
| 文章编号： | 1008-505X(2002)01-0008-08 |
Physiological and molecular mechanisms of heavy metal uptake by hyperaccumulting plants |
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| Yang Xiao-e,Long Xin-xian,Ni Wu-zhong. Physiological and molecular mechanisms of heavy metal uptake by hyperaccumulting plants[J]. Plant Nutrition and Fertilizer Science, 2002, 8(1): 8-15. DOI: 10.11674/zwyf.2002.0102 |
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| Authors: | Yang Xiao-e Long Xin-xian Ni Wu-zhong |
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| Affiliation: | 1.Institute of Agric. Chem.;College of Natural Resou.and Envir. Sci.;Zhejiang Univ.;Hangzhou 310029;China |
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| Abstract: | The mechanisms of heavy metal hyperaccumulation in the leaf cells by the hyperaccumulating plant species are not fully understood. Heavy metal transport from the rhizosphere to the shoots could be regulated at several different sites within the plant. These processes include metal ion influx across root plasma membrane, transport within the root symplasm, loading into xylem vessels in the stele of the root, long distance translocation in the xylem (and possibly phloem), transports across the leaf cell membrane and the leaf cell tonoplast, and storage in the vacuole. In this paper, recent advances in understanding physiological and molecular mechanisms of heavy metal absobtion, transport and accumulation by the hyperaccumulating plants were reviewed. |
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