Reference : Phenotypic differentiation of gastrointestinal microbes is reflected in their encoded...
Scientific journals : Article
Life sciences : Microbiology
http://hdl.handle.net/10993/23291
Phenotypic differentiation of gastrointestinal microbes is reflected in their encoded metabolic repertoires
English
Bauer, Eugen mailto [University of Luxembourg > Luxembourg Centre for Systems Biomedicine (LCSB) > >]
Laczny, Cédric mailto [University of Luxembourg > Luxembourg Centre for Systems Biomedicine (LCSB) > >]
Magnusdottir, Stefania mailto [University of Luxembourg > Luxembourg Centre for Systems Biomedicine (LCSB) > >]
Wilmes, Paul mailto [University of Luxembourg > Luxembourg Centre for Systems Biomedicine (LCSB) > >]
Thiele, Ines mailto [University of Luxembourg > Luxembourg Centre for Systems Biomedicine (LCSB) > >]
2015
Microbiome
BioMed Central
3
55
1-13
Yes (verified by ORBilu)
2049-2618
London
United Kingdom
[en] Genome-scale metabolic reconstructions ; Metabolic modeling ; Metagenomics ; Intestinal microbiota ; Evolution ; Ecology
[en] Background: The human gastrointestinal tract harbors a diverse microbial community, in which metabolic phenotypes play important roles for the human host. Recent developments in meta-omics attempt to unravel metabolic roles of microbes by linking genotypic and phenotypic characteristics. This connection, however, still remains poorly understood with respect to its evolutionary and ecological context.
Results: We generated automatically refined draft genome-scale metabolic models of 301 representative intestinal microbes in silico. We applied a combination of unsupervised machine-learning and systems biology techniques to study individual and global differences in genomic content and inferred metabolic capabilities. Based on the global metabolic differences, we found that energy metabolism and membrane synthesis play important roles in delineating different taxonomic groups. Furthermore, we found an exponential relationship between phylogeny and the reaction composition, meaning that closely related microbes of the same genus can exhibit pronounced differences with respect to their metabolic capabilities while at the family level only marginal metabolic differences can be observed. This finding was further substantiated by the metabolic divergence within different genera. In particular, we could distinguish three sub-type clusters based on membrane and energy metabolism within the Lactobacilli as well as two clusters within the Bifidobacteria and Bacteroides.
Conclusions: We demonstrate that phenotypic differentiation within closely related species could be explained by their metabolic repertoire rather than their phylogenetic relationships. These results have important implications in our understanding of the ecological and evolutionary complexity of the human gastrointestinal microbiome.
Luxembourg Centre for Systems Biomedicine (LCSB): Eco-Systems Biology (Wilmes Group) ; Luxembourg Centre for Systems Biomedicine (LCSB): Molecular Systems Physiology (Thiele Group)
http://hdl.handle.net/10993/23291
10.1186/s40168-015-0121-6

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Open access
Bauer-2015-Phenotypic differentiation of gastrointestinal microbes is reflected in their encoded metabolic repertoires.pdfPublisher postprint3.89 MBView/Open

Bookmark and Share SFX Query

All documents in ORBilu are protected by a user license.