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Co-inoculation effect of plant-growth-promoting rhizobacteria and rhizobium on EDDS assisted phytoremediation of Cu contaminated soils

文献类型：期刊论文

作者Ju, Wenliang1,3,4; Liu, Lei2; Jin, Xiaolian1; Duan, Chengjiao1,4; Cui, Yongxing1,4; Wang, Jie1; Ma, Dengke1,4; Zhao, Wei1; Wang, Yunqiang3,5; Fang, Linchuan1,3
刊名CHEMOSPHERE
出版日期2020-09-01
卷号254页码:13
ISSN号0045-6535
关键词Chelant Rhizobacteria Alfalfa Plant tolerance Soil quality Phytoremediation
DOI10.1016/j.chemosphere.2020.126724
通讯作者Fang, Linchuan(flinc629@hotmail.com)
英文摘要Chelants application can increase the bioavailability of metals, subsequently limiting plant growth and reducing the efficiency of phytoremediation. Plant growth-promoting rhizobacteria (PGPRs) and rhizobium have substantial potential to improve plant growth and plant tolerance to metal stress. We evaluated the effects of co-inoculation with a PGPR strain (Paenibacillus mucilaginosus) and a Cu-resistant rhizobium strain (Sinorhizobium meliloti) on the efficiency of biodegradable chelant (S,S-ethylenediaminedisuccinic acid; EDDS) assisted phytoremediation of a Cu contaminated soil using alfalfa. The highest total Cu extraction by alfalfa was observed in the EDDS-treated soil upon co-inoculation with the PGPR and rhizobium strains, which was 1.2 times higher than that without co-inoculation. Partial least squares path modeling identified plant oxidative damage and soil microbial biomass as the key variables influencing Cu uptake by alfalfa roots. Co-inoculation significantly reduced the oxidative damage to alfalfa by mitigating the accumulation of malondialdehyde and reactive oxygen species, and improving the antioxidation capacity of the plant in the presence of EDDS. EDDS application decreased microbial diversity in the rhizosphere, whereas co-inoculation increased microbial biomass carbon and nitrogen, and microbial community diversity. Increased relative abundances of Actinobacteria and Bacillus and the presence of Firmicutes taxa as potential biomarkers demonstrated that co-inoculation increased soil nutrient content, and improved plant growth. Co-inoculation with PGPR and rhizobium can be useful for altering plant-soil biochemical responses during EDDS-enhanced phytoremediation to alleviate phytotoxicity of heavy metals and improve soil biochemical activities. This study provides an effective strategy for improving phytoremediation efficiency and soil quality during chelant assisted phytoremediation of metal-contaminated soils. (C) 2020 Elsevier Ltd. All rights reserved.
WOS关键词ENHANCED PHYTOEXTRACTION ; MICROBIAL COMMUNITIES ; EXTRACTION METHOD ; VIGNA-RADIATA ; METAL ; EDTA ; EFFICIENCY ; COPPER ; ACCUMULATION ; TOLERANCE
资助项目National Natural Science Foundation of China[41571314] ; National Natural Science Foundation of China[41671406] ; CAS Light ofWest China Program[XAB2016A03] ; Education Department Foundation of Zhejiang Province[Y201738652]
WOS研究方向Environmental Sciences & Ecology
语种英语
出版者PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号WOS:000538150400015
资助机构National Natural Science Foundation of China ; CAS Light ofWest China Program ; Education Department Foundation of Zhejiang Province
源URL[http://ir.ieecas.cn/handle/361006/14926]  
专题地球环境研究所_生态环境研究室
第四纪科学与全球变化卓越创新中心
通讯作者Fang, Linchuan
作者单位1.Chinese Acad Sci, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Minist Water Resources, Yangling 712100, Shaanxi, Peoples R China
2.Univ Groningen, Univ Med Ctr Groningen, Dept Med Microbiol, Hanzepl 1, NL-9713 GZ Groningen, Netherlands
3.Chinese Acad Sci, CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
5.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China
推荐引用方式
GB/T 7714		 Ju, Wenliang,Liu, Lei,Jin, Xiaolian,et al. Co-inoculation effect of plant-growth-promoting rhizobacteria and rhizobium on EDDS assisted phytoremediation of Cu contaminated soils[J]. CHEMOSPHERE,2020,254:13.
APA Ju, Wenliang.,Liu, Lei.,Jin, Xiaolian.,Duan, Chengjiao.,Cui, Yongxing.,...&Fang, Linchuan.(2020).Co-inoculation effect of plant-growth-promoting rhizobacteria and rhizobium on EDDS assisted phytoremediation of Cu contaminated soils.CHEMOSPHERE,254,13.
MLA Ju, Wenliang,et al."Co-inoculation effect of plant-growth-promoting rhizobacteria and rhizobium on EDDS assisted phytoremediation of Cu contaminated soils".CHEMOSPHERE 254(2020):13.

入库方式： OAI收割

来源：地球环境研究所

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