文献类型：期刊文献

英文题名：Plant-associated Microbe System in Treatment of Heavy Metals-contaminated Soil: Mechanisms and Applications

作者：Ren, Zhiming[1];Cheng, Rui[1];Chen, Peng[1];Xue, Yuanyuan[1];Xu, Hong[1];Yin, Yao[2];Huang, Guangtuan[1,3];Zhang, Wei[1,3,4];Zhang, Lehua[1,3,4]

机构：[1]East China Univ Sci & Technol, Natl Engn Lab Ind Wastewater Treatment, Shanghai 200237, Peoples R China;[2]Shanghai Municipal Engn Design Inst Grp Co Ltd, Shanghai 200092, Peoples R China;[3]East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asses, Shanghai 200237, Peoples R China;[4]Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China

年份：2023

卷号：234

期号：1

外文期刊名：WATER AIR AND SOIL POLLUTION

收录：;EI(收录号：20230213375553);WOS:【SCI-EXPANDED(收录号:WOS:000909974300002)】；

基金：This work was supported by the National key research and development plans of special project for site soils (2018YFC1800600), the National Key R&D Program of China, High efficient Development and Utilization of Water Resource (2019YFC0408202), the National Natural Science Foundation of China (NSFC) (21876050), Shanghai Rising-Star Program (19QB1405300).

语种：英文

外文关键词：Plant growth-promoting rhizobacteria; Phytoremediation; Plant-associated microbe systems; Heavy metal pollution

摘要：Owing to the ecological applicability, phytoremediation has attracted extensive attention in the remediation of heavy metals-contaminated soil, but the slow plant growth and low remediation efficiency limit its application. Recently, the developed plant-associated microbes has opened up promising areas of research in the field of phytoremediation technology. Various plant growth-promoting rhizobacterias (PGPR) are suggested to be involved in the phytoremediation of heavy metals-contaminated soils, thereby significantly enhancing the removal efficiency of heavy metals. Currently, the published reviews focus on the resistance mechanism of plants and microorganisms to heavy metals, but the function and regulatory machinery of PGPR on phytoremediation have been overlooked. This paper will give a critical review on the processes of PGPR in phytoremediation, including both direct and indirect mechanisms such as (i) the secretion of siderophores, organic acids, biosurfactants, and redox processes and (ii) stimulating plant growth or enhancing their resistance via N fixation, P solubilization, and phytohormone and aminocyclopropane-1-carboxylic acid deaminase synthesis. Moreover, the development of PGPR in phytoremediation is prospected. This work would help readers and researchers better understand the principle and application of PGPR in promoting phytoremediation heavy metals-contaminated soil.