globalchange  > 气候变化事实与影响
DOI: 10.1080/01490451.2019.1583698
WOS记录号: WOS:000461951500001
论文题名:
Reconstruction of Past Dynamics of Methane-Oxidizing Bacteria in Lake Sediments Using a Quantitative PCR Method: Connecting Past Environmental Changes and Microbial Community
作者: Belle, Simon1; Parent, Claire2
通讯作者: Belle, Simon
刊名: GEOMICROBIOLOGY JOURNAL
ISSN: 0149-0451
EISSN: 1521-0529
出版年: 2019
卷: 36, 期:6, 页码:570-579
语种: 英语
英文关键词: Ancient DNA ; methane cycle ; microbial ecology ; paleolimnology ; global change
WOS关键词: DNA EXTRACTION KITS ; 16S RIBOSOMAL-RNA ; METHANOTROPHIC BACTERIA ; PROFUNDAL SEDIMENTS ; DELTA-C-13 VALUES ; ABUNDANCE ; EXPRESSION ; CYCLE ; SOIL ; TEMPERATURE
WOS学科分类: Environmental Sciences ; Geosciences, Multidisciplinary
WOS研究方向: Environmental Sciences & Ecology ; Geology
英文摘要:

In this study, a quantitative PCR (qPCR) method was applied to amplify ancient DNA (aDNA) of different methane-oxidizing bacteria (MOB) types in lake sediments and to reconstruct microbial community dynamics over the last 1200 years. We also used reconstructions of in-lake nutrients concentrations, air temperature fluctuations, and sedimentary organic matter dynamics to study impacts of past environmental and climatic changes on MOB community composition. DNA preservation in lake sediments is sufficient, and qPCR amplification was successfully applied to the analysis of MOB aDNA. Temporal changes in MOB community showed different patterns between lakes, and drivers of past MOB dynamics slightly differed between lakes and among MOB groups. Overall, MOB developments were generally correlated to proxies of organic matter quality/quantity and climate data. Moreover, our results could emphasize the importance of nutrients availability in structuring MOB community, and the higher ability of MOB type 2 to access nutrients under nitrogen/nutrients limited conditions. Therefore, our study provides an operational and time-effective method to reconstruct past CH4 oxidation in lakes and could help to identify the driving factors of past temporal dynamics of MOB community.


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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/131838
Appears in Collections:气候变化事实与影响

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作者单位: 1.Swedish Univ Agr Sci, Dept Aquat Sci & Assessment, S-75007 Uppsala, Sweden
2.Univ Bourgogne Franche Comte, CNRS, UMR 6249, Lab Chronoenvironm, Besancon, France

Recommended Citation:
Belle, Simon,Parent, Claire. Reconstruction of Past Dynamics of Methane-Oxidizing Bacteria in Lake Sediments Using a Quantitative PCR Method: Connecting Past Environmental Changes and Microbial Community[J]. GEOMICROBIOLOGY JOURNAL,2019-01-01,36(6):570-579
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