首页|Hydrology driven vertical distribution of prokaryotes and methane functional groups in a subtropical peatland
Hydrology driven vertical distribution of prokaryotes and methane functional groups in a subtropical peatland
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NSTL
Elsevier
Microbiomes play fundamental roles in ecological function of peatlands. Despite the confirmed role of hydrology in the modulation of microbial communities in peatlands, its impact on microbial functional groups involved in methane cycle has remained poorly defined particularly at subtropical peatlands. To this end, prokaryotic communities and methane related functional groups from two peat profiles were investigated in the Dajiuhu Peatland, a subtropical peatland in central China; via high throughput sequencing of the 16S rRNA genes, quantitative PCR, and clone library construction for functional genes for methanogens (mcrA) and methanotrophs (pmoA). Results showed that depth to water table (DWT), indicator for water table variation, significantly impacted the vertical distribution of prokaryotic communities, especially Acidobacteria and Bathyarchaeota, and methane functional groups. FenC, RC I and RRC I dominated methanogens in middle and bottom samples of the profiles, whereas Methylocystis dominated methanotrophic communities in surface and middle samples. Quantitatively methanogens decreased with increasing DWT, whereas reverse pattern was seen for methanotrophs. Aerobic or anaerobic OTUs clustered into different modules in the co-occurrence network, indicating a strongly oxygen-dependent niche preference. Collectively, our observations demonstrated important ecological regulation of DWT on prokaryotes and CH4 related microbiomes in subtropical peatlands, which expanding our understanding of microbial responses and CH4 cycles in the context of environmental changes globally.
Depth to water tableMicrobiomesmcrApmoAThe Dajiuhu Peatland16S RIBOSOMAL-RNAGREENHOUSE-GAS FLUXESWATER-TABLEMICROBIAL COMMUNITIESCARBON-DIOXIDEMETHANOTROPH DIVERSITYSOIL RESPIRATIONACIDIC PEATLANDSBOREAL FENTEMPERATURE
Wang, Ruicheng、Wang, Hongmei、Xi, Zhiqin、Tuovinen, Olli H.、Gong, Linfeng、Huang, Xianyu
NSTL
Elsevier
