Abstract:
:Microbial community structure can be analyzed by quantifying cell numbers or by quantifying biomass for individual populations. Methods for quantifying cell numbers are already available (e.g., fluorescence in situ hybridization, 16-S rRNA gene amplicon sequencing), yet high-throughput methods for assessing community structure in terms of biomass are lacking. Here we present metaproteomics-based methods for assessing microbial community structure using protein abundance as a measure for biomass contributions of individual populations. We optimize the accuracy and sensitivity of the method using artificially assembled microbial communities and show that it is less prone to some of the biases found in sequencing-based methods. We apply the method to communities from two different environments, microbial mats from two alkaline soda lakes, and saliva from multiple individuals. We show that assessment of species biomass contributions adds an important dimension to the analysis of microbial community structure.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Kleiner M,Thorson E,Sharp CE,Dong X,Liu D,Li C,Strous Mdoi
10.1038/s41467-017-01544-xsubject
Has Abstractpub_date
2017-11-16 00:00:00pages
1558issue
1issn
2041-1723pii
10.1038/s41467-017-01544-xjournal_volume
8pub_type
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