Analysis of Active Methylotrophic Communities: When DNA-SIP Meets High-Throughput Technologies.
Analysis of Active Methylotrophic Communities: When DNA-SIP Meets High-Throughput Technologies.
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活跃甲基营养群落分析:当 DNA-SIP 遇到高通量技术时。
DOI:
10.1007/978-1-4939-3369-3_14
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发表时间:
2016
期刊:
影响因子:
--
通讯作者:
Taubert M
中科院分区:
文献类型:
--
作者:
Taubert M
Methylotrophs are microorganisms ubiquitous in the environment that can metabolize one-carbon (C1) compounds as carbon and/or energy sources. The activity of these prokaryotes impacts biogeochemical cycles within their respective habitats and can determine whether these habitats act as sources or sinks of C1 compounds. Due to the high importance of C1 compounds, not only in biogeochemical cycles, but also for climatic processes, it is vital to understand the contributions of these microorganisms to carbon cycling in different environments. One of the most challenging questions when investigating methylotrophs, but also in environmental microbiology in general, is which species contribute to the environmental processes of interest, or “who does what, where and when?” Metabolic labeling with C1 compounds substituted with13C, a technique called stable isotope probing, is a key method to trace carbon fluxes within methylotrophic communities. The incorporation of13C into the biomass of active methylotrophs leads to an increase in the molecular mass of their biomolecules. For DNA-based stable isotope probing (DNA-SIP), labeled and unlabeled DNA is separated by isopycnic ultracentrifugation. The ability to specifically analyze DNA of active methylotrophs from a complex background community by high-throughput sequencing techniques, i.e. targeted metagenomics, is the hallmark strength of DNA-SIP for elucidating ecosystem functioning, and a protocol is detailed in this chapter.
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DOI:
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发表时间:
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期刊:
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