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植物修复重金属污染及内生细菌效应 被引量:11

Phytoremediation of heavy metals and its endophytic bacteria effects
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摘要 土壤和水体的重金属污染已严重危害人类生存环境与健康。由于受重金属污染的环境分布广泛,迫切需要开发经济的清除环境重金属的技术。植物修复是通过绿色植物降解或移除环境污染物,有望成为重金属污染环境的原位修复技术。植物内生菌是指定殖于健康植物的各种组织和器官内部的细菌,被感染的宿主植物不表现出外在病症,耐重金属的内生菌在多种超富集植物中存在。在植物修复过程中,野生型内生菌或基因工程内生菌的抗性系统能降低重金属植物毒性,促进其迁移金属。耐重金属内生菌还可以通过固氮、溶解矿物元素及产生类植物激素、铁载体和ACC脱氨酶等产物促进植物的生长。主要综述目前植物-内生菌相互作用及其潜在的促进植物修复重金属污染的研究进展。 Pollution of soils and water with heavy metals is becoming one of the most severe environ-mental and human health hazards.Innovative ways are pressed for cleaning widespread heavy metals contamination.Phytoremediation is a remediation technology that requires the use of green plants to remove pollutants from the environment.Endophytic bacteria colonize within plant hosts without caus-ing symptoms of infection or negative effects.The metal resistant endophytes are present in various hyperccumulatorplants.During phytoremediation of metals,the wild-type or engineered endophytes can lower metal phytotoxicity and enhance heavy metal translocation to plant through its metal-resistance system.Moreover,the metal resirtant endophytes can indirectly benefit plant growth by various mecha-nisms such as nitrogen fixation,solubilization of minerals production of phytohormines,siderophors,1-aminocyclopropane-1-carboxylate(ACC) deaminase.This review describes the potential for exploit-ing plant-endophyte pertnerships to improve phytoremediation of heavy metals.
出处 《微生物学通报》 CAS CSCD 北大核心 2011年第6期921-927,共7页 Microbiology China
基金 国家自然科学基金项目(No.31070296) 福建省高校服务海西建设重点项目(No.A102)
关键词 植物修复 内生菌 重金属 Phytoremediation Endophytic bacteria Heavy metal
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二级参考文献2

  • 1Brett H. Robinson,Marc Leblanc,Daniel Petit,Robert R. Brooks,John H. Kirkman,Paul E.H. Gregg.The potential of Thlaspi caerulescens for phytoremediation of contaminated soils[J].Plant and Soil.1998(1)
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