Abstract：
:Most microbes in the biosphere remain unculturable. Whole genome shotgun (WGS) sequencing of environmental DNA (metagenomics) can be used to study the genetic and metabolic properties of natural microbial communities. However, in communities of high complexity, metagenomics fails to link specific microbes to specific ecological functions. To overcome this limitation, we developed a method to target microbial subpopulations by labeling DNA through stable isotope probing (SIP), followed by WGS sequencing. Metagenome analysis of microbes from Lake Washington in Seattle that oxidize single-carbon (C1) compounds shows specific sequence enrichments in response to different C1 substrates, revealing the ecological roles of individual phylotypes. We also demonstrate the utility of our approach by extracting a nearly complete genome of a novel methylotroph, Methylotenera mobilis, reconstructing its metabolism and conducting genome-wide analyses. This high-resolution, targeted metagenomics approach may be applicable to a wide variety of ecosystems.
journal_name
Nat Biotechnoljournal_title
Nature biotechnologyauthors
Kalyuzhnaya MG,Lapidus A,Ivanova N,Copeland AC,McHardy AC,Szeto E,Salamov A,Grigoriev IV,Suciu D,Levine SR,Markowitz VM,Rigoutsos I,Tringe SG,Bruce DC,Richardson PM,Lidstrom ME,Chistoserdova Ldoi
10.1038/nbt.1488subject
Has Abstractpub_date
2008-09-01 00:00:00pages
1029-34issue
9eissn
1087-0156issn
1546-1696pii
nbt.1488journal_volume
26pub_type
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