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学科主题: 生物科学::普通生物学
题名: Salinity Affects the Composition of the Aerobic Methanotroph Community in Alkaline Lake Sediments from the Tibetan Plateau
作者: Deng, YC (Deng, Yongcui)1, 2, 3; Liu, YQ (Liu, Yongqin)4; Dumont, M (Dumont, Marc)5; Conrad, R (Conrad, Ralf)2
通讯作者: Liu, YQ
关键词: FRESH-WATER LAKES ; 16S RIBOSOMAL-RNA ; SODA LAKES ; METHANE OXIDATION ; MESSENGER-RNA ; ZOIGE WETLAND ; LONAR LAKE ; MONO LAKE ; DIVERSITY ; BACTERIA
刊名: MICROBIAL ECOLOGY
发表日期: 2017
DOI: 10.1007/s00248-016-0879-5
卷: 73, 期:1, 页:101-110
收录类别: SCI
合作性质: 国际
文章类型: Article
类目[WOS]: Ecology; Marine & Freshwater Biology; Microbiology ; Environmental Sciences & Ecology; Marine & Freshwater Biology; Microbiology
研究领域[WOS]: Environmental Sciences & Ecology; Marine & Freshwater Biology; Microbiology
英文摘要: Lakes are widely distributed on the Tibetan Plateau, which plays an important role in natural methane emission. Aerobic methanotrophs in lake sediments reduce the amount of methane released into the atmosphere. However, no study to date has analyzed the methanotroph community composition and their driving factors in sediments of these high-altitude lakes (> 4000 m). To provide new insights on this aspect, the abundance and composition in the sediments of six high-altitude alkaline lakes (including both freshwater and saline lakes) on the Tibetan Plateau were studied. The quantitative PCR, terminal restriction fragment length polymorphism, and 454-pyrosequencing methods were used to target the pmoA genes. The pmoA gene copies ranged 10(4)-10(6) per gram fresh sediment. Type I methanotrophs predominated in Tibetan lake sediments, with Methylobacter and uncultivated type Ib methanotrophs being dominant in freshwater lakes and Methylomicrobium in saline lakes. Combining the pmoA-pyrosequencing data from Tibetan lakes with other published pmoA-sequencing data from lake sediments of other regions, a significant salinity and alkalinity effect (P = 0.001) was detected, especially salinity, which explained similar to 25% of methanotroph community variability. The main effect was Methylomicrobium being dominant (up to 100%) in saline lakes only. In freshwater lakes, however, methanotroph composition was relatively diverse, including Methylobacter, Methylocystis, and uncultured type Ib clusters. This study provides the first methanotroph data for high-altitude lake sediments (> 4000 m) and shows that salinity is a driving factor for the community composition of aerobic methanotrophs.
语种: 英语
WOS记录号: WOS:000392130400010
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.itpcas.ac.cn/handle/131C11/8401
Appears in Collections:图书馆_期刊论文

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作者单位: 1.Nanjing Normal Univ, Coll Geog Sci, 1 Wenyuan Rd, Nanjing 210023, Jiangsu, Peoples R China.
2.Max Planck Inst Terr Microbiol, Karl von Frisch Str 10, D-35043 Marburg, Germany.
3.Jiangsu Ctr Collaborat Innovat Geog Informat Reso, 1 Wenyuan Rd, Nanjing 210023, Jiangsu, Peoples R China.
4.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100085, Peoples R China.
5.Univ Southampton, Biol Sci, Southampton SO17 1BJ, Hants, England.

Recommended Citation:
Deng, YC ,Liu, YQ ,Dumont, M ,et al. Salinity Affects the Composition of the Aerobic Methanotroph Community in Alkaline Lake Sediments from the Tibetan Plateau[J]. MICROBIAL ECOLOGY,2017,73(1):101-110.
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文件名: V.73(1) 101-110 2017.pdf
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