气候变化领域集成服务门户(CCPortal): Microbial metabolic limitation of rhizosphere under heavy metal stress: Evidence from soil ecoenzymatic stoichiometry

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DOI	10.1016/j.envpol.2022.118978
	Microbial metabolic limitation of rhizosphere under heavy metal stress: Evidence from soil ecoenzymatic stoichiometry
	Duan, Chengjiao; Wang, Yuhan; Wang, Qiang; Ju, Wenliang; Zhang, Zhiqin; Cui, Yongxing; Beiyuan, Jingzi; Fan, Qiaohui; Wei, Shiyong; Li, Shiqing; Fang, Linchuan
通讯作者	Fang, LC (通讯作者)，Inst Soil & Water Conservat CAS & MWR, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China.
发表日期	2022
ISSN	0269-7491
EISSN	1873-6424
卷号	300
英文摘要	Slow nutrient turnover and destructed soil function were the main factors causing low efficiency in phytoremediation of heavy metal (HM)-contaminated soil. Soil ecoenzymatic stoichiometry can reflect the ability of soil microorganisms to acquire energy and nutrients, and drive nutrient cycling and carbon (C) decomposition in HM contaminated soil. Therefore, for the first time, we used the enzymatic stoichiometry modeling to examine the microbial nutrient limitation in rhizospheric and bulk soil of different plants (Medicago sativa, Halogeton arachnoideus and Agropyron cristatum) near the Baiyin Copper Mine. Results showed that the main pollutants in this area were Cu, Zn, Cd, and Pb, while Cd and Zn have the greatest contribution according to the analysis of pollution load index (PLI). The activities of soil C-, nitrogen (N)-, and phosphorus (P)-acquiring enzymes in the rhizosphere of plants were significantly greater than that in bulk soil. Moreover, microbial C and P limitations were observed in all plant treatments, while the lower limitation was generally in the rhizosphere compared to bulk soil. The HM stress significantly increased microbial C limitation and decreased microbial P limitation, especially in the rhizospheric soil. The partial least squares path modeling (PLS-PM) further indicated that HM concentration has the greatest effects on microbial P limitation (-0.64). In addition, the highest enzyme activities and the lowest P limitation were observed in the rhizospheric and bulk soil of M. sativa, thereby implying that soil microbial communities under the remediation of M. sativa were steadier and more efficient in terms of their metabolism. These findings are important for the elucidation of the nutrient cycling and microbial metabolism of rhizosphere under phytoremediation, and provide guidance for the restoration of HM-contaminated soil.
关键词	VEGETATION RESTORATION FUNCTIONAL DIVERSITY NUTRIENT LIMITATION COMMUNITY STRUCTURE ENZYME-ACTIVITIES LOESS PLATEAU CARBON CONTAMINATION AVAILABILITY GRASSLAND
英文关键词	Potentially toxic elements; Phytoremediation; Rhizosphere; Ecoenzymatic stoichiometry; Microbial metabolic limitation
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:000758466100002
来源期刊	ENVIRONMENTAL POLLUTION
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/255159
作者单位	[Duan, Chengjiao; Ju, Wenliang; Cui, Yongxing; Wei, Shiyong; Li, Shiqing; Fang, Linchuan] Inst Soil & Water Conservat CAS & MWR, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China; [Duan, Chengjiao] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Wang, Yuhan; Wang, Qiang; Zhang, Zhiqin] Northwest A&F Univ, Coll Nat Resources & Environm, Yangling 712100, Shaanxi, Peoples R China; [Ju, Wenliang] Tsinghua Univ, Sch Environm, Beijing 100084, Peoples R China; [Cui, Yongxing] Peking Univ, Coll Urban & Environm Sci, Sino French Inst Earth Syst Sci, Beijing 100871, Peoples R China; [Beiyuan, Jingzi] Foshan Univ, Sch Environm & Chem Engn, Foshan 528000, Peoples R China; [Fan, Qiaohui] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Peoples R China; [Fang, Linchuan] CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China
推荐引用方式 GB/T 7714	Duan, Chengjiao,Wang, Yuhan,Wang, Qiang,et al. Microbial metabolic limitation of rhizosphere under heavy metal stress: Evidence from soil ecoenzymatic stoichiometry[J]. 中国科学院西北生态环境资源研究院,2022,300.
APA	Duan, Chengjiao.,Wang, Yuhan.,Wang, Qiang.,Ju, Wenliang.,Zhang, Zhiqin.,...&Fang, Linchuan.(2022).Microbial metabolic limitation of rhizosphere under heavy metal stress: Evidence from soil ecoenzymatic stoichiometry.ENVIRONMENTAL POLLUTION,300.
MLA	Duan, Chengjiao,et al."Microbial metabolic limitation of rhizosphere under heavy metal stress: Evidence from soil ecoenzymatic stoichiometry".ENVIRONMENTAL POLLUTION 300(2022).