重金属污染土壤植物根系分泌物研究进展  

Research progress of soil plant root exudates in heavy metal contaminated soil

作　　者：徐炜杰 郭佳 赵敏 王任远 侯淑贞 杨芸 钟斌[1,2] 郭华 刘晨[1,2] 沈颖 柳丹[1,2] 

机构地区：[1]浙江农林大学省部共建亚热带森林培育国家重点实验室,浙江杭州311300 [2]浙江农林大学环境与资源学院浙江省土壤污染生物修复重点实验室,浙江杭州311300 [3]浙江诚邦园林规划设计院有限公司,浙江杭州310008 [4]浙江省温岭市环境保护局,浙江温岭317500

出　　处：《浙江农林大学学报》2017年第6期1137-1148,共12页Journal of Zhejiang A&F University

基　　金：国家自然科学基金面上基金资助项目(31670617);浙江省科学技术重点研发项目(2015C03020-2)

摘　　要：根系分泌物不仅是植物与根际进行物质交换的载体,还参与植物修复污染土壤的各个环节。通过查阅1992-2016年国内外关于根系分泌物的研究成果,对根系分泌物分类的依据、常用收集鉴定方法的适用性,及其在土壤修复中的作用方面等进行了综述。通过植物根系分泌物的提取鉴定方法以及对污染土壤修复机理影响等方面的系统梳理,揭示了目前中国在植物根系分泌物研究的研究体系以及在今后的研究中所需要突破的方向。植物修复作为典型的绿色、环保的修复技术近年来应用广泛,但修复效率低、耗时长等一系列现实问题,一直是困扰该技术大面积应用的重要瓶颈,而加强根系分泌物在植物修复中作用的研究是解决这一问题的关键。通过对以往该领域的研究文献的分析,系统阐明了根系分泌物在土壤中的物理、化学、生物作用,为重金属污染土壤的植物修复工程的研究提供理论支撑和技术指导。Root ex udates are the carrier of material exchange between plant and rhizosphere, which are also involved in phytoremediation of contaminated soil links. The classification basis, methods applicability and remediation effects of root exudates in soil were reviewed among the literature of China and abroad in 1992-2016 in present paper. Through the systematic analysis on the extraction and identification methods of plant root exudates and its effect on contaminated soil remediation mechanism, the present research system and breakthrough in the future was revealed. Phytoremediation is a green and environmental remediation technology, and which was used widely in recent years. However, low efficiency and long time-consuming were its important bottleneck. The key to solving these problems is to accelerate the study of the role of root exudates in phytoremediation. Through the analysis of the previous research literature in this field, the physical, chemical and biological effects of root exudates were clarified systematically, which provide theoretical support technical guidance for the study of phytoremediation of heavy metal contaminated soil in the future.

关 键 词：土壤学 植物修复 根系分泌物 土壤重金属 综述 

分 类 号：S154.4[农业科学—土壤学] X53[农业科学—农业基础科学]