Impact of 36 years of nitrogen fertilization on microbial community composition and soil carbon cycling-related enzyme activities in rhizospheres and bulk soils in northeast China

Wang, Q.; Ma, Mingchao; Jiang, X.; Guan, D.; Wei, D.; Zhao, B.; Chen, S.; Cao, F.; Li, L.; Yang, X.; Li, J.

doi:10.1016/j.apsoil.2018.12.019

Article (Scientific journals)

Impact of 36 years of nitrogen fertilization on microbial community composition and soil carbon cycling-related enzyme activities in rhizospheres and bulk soils in northeast China

Wang, Q.; Ma, Mingchao; Jiang, X. et al.

2019 • In Applied Soil Ecology, 136, p. 148-157

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https://hdl.handle.net/2268/266307

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10.1016/j.apsoil.2018.12.019

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Keywords :

Black soil; Decomposition; Enzyme activities; Nitrogen fertilization; Rhizosphere

Abstract :

[en] Nitrogen (N) deposition can change ecosystem functions but little is known of long-term N-deposition and rhizosphere effects on the microbial community composition and enzymes activities related to the carbon (C) cycle in the black soil common to northeastern China. Here, we studied two enzyme activities involved in C cycles and microbial community composition in both the rhizosphere and bulk soil from a long-term (36-year) fertilization field experiment. N-addition significantly decreased bacterial abundance and phenol oxidase activity, but enhanced fungal abundance and peroxidase activity, in both the rhizosphere and bulk soil. The fungal diversity exhibited more obvious shifts than the bacterial diversity after long-term N-addition, resulting in significantly decreased bacterial and fungal diversity levels, except for bacterial diversity in the rhizosphere, which was not significantly changed. Moreover, the enzyme activities and the bacterial and fungal abundance levels were higher in the rhizosphere than in the bulk soil, suggesting a rhizosphere effect on microbial activities involved in the C cycle. There was a significant difference in the microbial community compositions among different N-addition levels. A lesser β-diversity response to N-addition was observed in the rhizosphere than in the bulk soil, and the responses of fungal communities were greater than those of bacterial communities. Our findings suggested that rhizosphere effects and fertilization regimes both have significant influences on microbial communities and soil enzyme activities, and that fungi were more sensitive than bacteria in responding to N-deposition. © 2018

Disciplines :

Microbiology

Author, co-author :

Wang, Q.; Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, China, College of Biological Sciences, China Agricultural University, Beijing, 100094, China

Ma, Mingchao ; Université de Liège - ULiège

Jiang, X.; Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, China, Laboratory of Quality & Safety Risk Assessment for Microbial Products (Beijing), Ministry of Agriculture, Beijing, 100081, China

Guan, D.; Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, China

Wei, D.; The Institute of Soil Fertility and Environmental Sources, Heilongjiang Academy of Agricultural Sciences, Harbin, 150086, China

Zhao, B.; Laboratory of Quality & Safety Risk Assessment for Microbial Products (Beijing), Ministry of Agriculture, Beijing, 100081, China

Chen, S.; College of Biological Sciences, China Agricultural University, Beijing, 100094, China

Cao, F.; Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, China, Laboratory of Quality & Safety Risk Assessment for Microbial Products (Beijing), Ministry of Agriculture, Beijing, 100081, China

Li, L.; Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, China

Yang, X.; Laboratory of Quality & Safety Risk Assessment for Microbial Products (Beijing), Ministry of Agriculture, Beijing, 100081, China

Li, J.; Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, China, Laboratory of Quality & Safety Risk Assessment for Microbial Products (Beijing), Ministry of Agriculture, Beijing, 100081, China

Language :

English

Title :

Impact of 36 years of nitrogen fertilization on microbial community composition and soil carbon cycling-related enzyme activities in rhizospheres and bulk soils in northeast China

Publication date :

2019

Journal title :

Applied Soil Ecology

ISSN :

0929-1393

Publisher :

Elsevier, Netherlands

Volume :

136

Pages :

148-157

Peer reviewed :

Peer Reviewed verified by ORBi

Available on ORBi :

since 21 December 2021

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