DOI: 10.1007/s10533-017-0296-y
Scopus记录号: 2-s2.0-85010754790
论文题名: Successional patterns of key genes and processes involved in the microbial nitrogen cycle in a salt marsh chronosequence
作者: Salles J.F. ; Pereira e Silva M.C. ; Dini-Andreote F. ; Dias A.C.F. ; Guillaumaud N. ; Poly F. ; van Elsas J.D.
刊名: Biogeochemistry
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 132, 期: 2018-01-02 起始页码: 185
结束页码: 201
语种: 英语
英文关键词: Ecological niches
; Environmental microbiology
; Functional genes
; Microbial ecology
; Nitrogen cycling
Scopus关键词: bacterium
; chronosequence
; denitrification
; functional role
; genetic marker
; microbial activity
; microbial community
; microbiology
; niche partitioning
; nitrogen cycle
; nutrient availability
; oxidation
; saltmarsh
; succession
; Archaea
; Bacteria (microorganisms)
英文摘要: Here, we investigated the patterns of microbial nitrogen cycling communities along a chronosequence of soil development in a salt marsh. The focus was on the abundance and structure of genes involved in N fixation (nifH), bacterial and archaeal ammonium oxidation (amoA; AOB and AOA), and the abundances of genes involved in denitrification (nirS, nirK, nosZ). Potential nitrification and denitrification activities were also measured, and increases in nitrification were found in soils towards the end of succession, whereas denitrification became maximal in soils at the intermediate stages. The nifH, nirK and nirS gene markers revealed increases in the sizes of the respective functional groups towards the intermediate stage (35 years), remaining either constant (for nifH) or slightly declining towards the latest stage of succession (for nirK and nirS). Moreover, whereas the AOB abundance peaked in soils at the intermediate stage, that of AOA increased linearly along the chronosequence. The abundance of nosZ was roughly constant, with no significant regression. The drivers of changes in abundance and structure were identified using path analysis; whereas the ammonia oxidizers (AOA and AOB) showed patterns that followed mainly N availability, those of the nitrogen fixers followed plant diversity and soil structure. The patterns of denitrifiers were group-dependent, following the patterns of plant diversity (nirK and nirS) and belowground shifts (nosZ). The variation observed for the microbial groups associated with the same function highlights their differential contribution at different stages of soil development, revealing an interplay of changes in terms of niche complementarity and adaptation to the local environment. © 2017, Springer International Publishing Switzerland. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/83313
Appears in Collections: 气候减缓与适应 气候变化事实与影响
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作者单位: Department of Microbial Ecology, GELIFES, University of Groningen, Groningen, Netherlands; Department of Soil Science, “Luiz de Queiroz” College of Agriculture, University of São Paulo, Piracicaba, São Paulo, Brazil; Microbial Ecology Centre, CNRS-Université Lyon 1, UMR 5557, USC 1364 INRA, Bat G. Mendel 43 bd du 11 novembre 1918, Villeurbanne, France
Recommended Citation:
Salles J.F.,Pereira e Silva M.C.,Dini-Andreote F.,et al. Successional patterns of key genes and processes involved in the microbial nitrogen cycle in a salt marsh chronosequence[J]. Biogeochemistry,2017-01-01,132(2018-01-02)