根际促生菌在植物修复重金属污染土壤中的应用研究进展  

Research Progress on the Applications of Plant Growth-promoting Rhizobacteria in Phytoremediation of Heavy Metals-contaminated Soil

作　　者：能凤娇[1,2] 刘鸿雁[3] 马莹[2] 吴龙华[2] 

机构地区：[1]贵州大学农学院,贵阳550025 [2]中国科学院南京土壤研究所土壤环境与污染修复重点实验室,南京210008 [3]贵州大学资源与环境工程学院,贵阳550003

出　　处：《中国农学通报》2013年第5期187-191,共5页Chinese Agricultural Science Bulletin

基　　金：国家高技术研究发展计划"863"重大项目"农业种植园区肥料与农药污染土壤修复技术及示范"(2012AA06A204);中国科学院知识创新工程重要方向项目"污泥生物处置的土壤环境效应与生物修复技术评价"(KSCX2-YW-G053)

摘　　要：近年来,由于土壤的重金属污染问题日益严重,迫切需要研发出高效的重金属污染土壤修复技术。植物修复技术与传统方法相比以其经济、环保与安全的特点,已成为解决土壤重金属污染问题的重要手段,特别是植物根际促生菌联合植物修复技术。评价了如何利用植物根际促生菌来提高植物对重金属的抗性、吸收与转运以及植物的生物量,从而提高植物修复重金属污染土壤的效率。简述了植物根际促生菌不仅可以分泌有机酸、生物表面活性剂等来提高土壤中重金属的生物有效性,从而直接影响植物对重金属的吸收,还可通过分泌植物生长激素吲哚-3-乙酸(IAA)、1-氨基环丙烷-1-羧酸脱氨酶(ACCD)、铁载体以及促进植物对矿物元素(磷)吸收等促进了植物的生长和对重金属的抗性、间接提高植物对重金属的吸收、富集。对近年来国内外根际促生菌在植物修复中的应用进行了综述,并对其研究前景进行了展望。In recent years,since soil contaminated with heavy metals has become more serious,the appropriate technology to rehabilitate heavy-metal contaminated soil was urgently needed.Phytoremediation is recognized as a cost-effective and environmental friendly method to remediate metal contaminated soil.Due to its great potential as a viable alternative to traditional remediation methods,phytoremediation,especially PGPR-assisted phytoremediation,is currently an exciting area of active research.Plant growth promoting rhizobacteria(PGPR) play an important role in phytoremediation process.It can either increase metal bioavailability in soil,uptake and translocation of metals in plants by secreting organic acid and biosurfacatant,or promote plant growth by producing phytohormone [indole-3-acetic acid(IAA)],1-aminocyclopropane-1-carboxylic acid(ACC) deaminase,siderophores and solubilizing phosphate.The applications of PGPR in phytoremedying heavy metal contaminated soil have been extensively reviewed in this paper and the suggestions have been also given for future work.

关 键 词：植物根际促生菌 植物修复 重金属 

分 类 号：S3[农业科学—农艺学]