Nitrogen cycle induced by plant growth-promoting rhizobacteria drives "microbial partners" to enhance cadmium phytoremediation
文献类型： 外文期刊
作者： Chi, Yaowei 1 ; Ma, Xianzhong 1 ; Chu, Shaohua 1 ; You, Yimin 6 ; Chen, Xunfeng 7 ; Wang, Juncai 8 ; Wang, Renyuan 1 ; Zhang, Xia 1 ; Zhang, Dongwei 1 ; Zhao, Ting 1 ; Zhang, Dan 1 ; Zhou, Pei 1 ;
作者机构： 1.Shanghai Jiao Tong Univ, Sch Agr & Biol, Shanghai 200240, Peoples R China
2.Minist Agr & Rural Affairs, Key Lab Urban Agr, Shanghai 200240, Peoples R China
3.Minist Educ, Minist Sci & Technol, Shanghai Yangtze River Delta Ecoenvironm Change &, Shanghai 200240, Peoples R China
4.Bor S Luh Food Safety Res Ctr, Shanghai 200240, Peoples R China
5.Shanghai Jiao Tong Univ, Yunnan Dali Res Inst, Shanghai 200240, Peoples R China
6.Jilin Agr Univ, Coll Forestry & Grassland, Jilin Prov Key Lab Tree & Grass Genet & Breeding, Changchun 130118, Peoples R China
7.Jiangsu Univ, Biofuels Inst, Sch Environm & Safety Engn, Zhenjiang 212013, Peoples R China
8.Guizhou Acad Sci, Guiyang 550001, Guizhou, Peoples R China
9.Inner Mongolia Acad Agr & Anim Husb Sci, Hohhot 010000, Peoples R China
关键词： Plant growth-promoting rhizobacteria; Phytoremediation; Heavy metal; Soil nitrate reductase; Microbiota; Synthetic community
期刊名称：MICROBIOME （ 影响因子：12.7； 五年影响因子：16.6 ）
ISSN： 2049-2618
年卷期： 2025 年 13 卷 1 期
页码：
收录情况： SCI
摘要： BackgroundUsing plant growth-promoting rhizobacteria (PGPR) combined with hyperaccumulator is an ecologically viable way to remediate cadmium (Cd) pollution in agricultural soil. Despite recent advances in elucidating PGPR-enhanced phytoremediation, the response of plant-associated microbiota to PGPR remains unclear.ResultsHere, we found that the effective colonization of PGPR reshaped the rhizosphere nutrient microenvironment, especially driving the nitrogen cycle, primarily mediated by soil nitrate reductase (S-NR). Elevated S-NR activity mobilized amino acid metabolism and synthesis pathways in the rhizosphere, subsequently driving a shift in life history strategies of the rhizosphere microbiota, and enriching specific rare taxa. The reconstructed synthetic community (SynCom3) confirmed that the inclusion of two crucial collaborators (Lysobacter and Microbacterium) could efficiently foster the colonization of PGPR and aid PGPR in executing phytoremediation enhancement. Finally, the multi-omics analysis highlighted the critical roles of phenylpropanoid biosynthesis and tryptophan metabolism pathways in inducing SynCom3 reorganization and PGPR-enhanced phytoremediation.ConclusionsOur results underscore the significance of the rhizosphere microenvironment modification by PGPR for its colonization and efficacy, and highlight the collaborative role of rare microbiota in the context of PGPR-enhanced phytoremediation.C2EXD-tFkSizBxTQQLWFPwVideo AbstractConclusionsOur results underscore the significance of the rhizosphere microenvironment modification by PGPR for its colonization and efficacy, and highlight the collaborative role of rare microbiota in the context of PGPR-enhanced phytoremediation.C2EXD-tFkSizBxTQQLWFPwVideo Abstract
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