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Comparative metagenomics and population dynamics of the gut microbiota in mother and infant.
MedLine Citation:
PMID:  20333224     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
Colonization of the gastrointestinal tract (GIT) of human infants with a suitable microbial community is essential for numerous aspects of health, but the progression of events by which this microbiota becomes established is poorly understood. Here, we investigate two previously unexplored areas of microbiota development in infants: the deployment of functional capabilities at the community level and the population genetics of its most abundant genera. To assess the progression of the infant microbiota toward an adult-like state and to evaluate the contribution of maternal GIT bacteria to the infant gut, we compare the infant's microbiota with that of the mother at 1 and 11 months after delivery. These comparisons reveal that the infant's microbiota rapidly acquires and maintains the range of gene functions present in the mother, without replicating the phylogenetic composition of her microbiota. Microdiversity analyses for Bacteroides and Bifidobacterium, two of the main microbiota constituents, reveal that by 11 months, the phylotypes detected in the infant are distinct from those in the mother, although the maternal Bacteroides phylotypes were transiently present at 1 month of age. The configuration of genetic variants within these genera reveals populations far from equilibrium and likely to be undergoing rapid growth, consistent with recent population turnovers. Such compositional turnovers and the associated loss of maternal phylotypes should limit the potential for long-term coadaptation between specific bacterial and host genotypes.
Authors:
Parag A Vaishampayan; Jennifer V Kuehl; Jeffrey L Froula; Jenna L Morgan; Howard Ochman; M Pilar Francino
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Publication Detail:
Type:  Journal Article     Date:  2010-01-06
Journal Detail:
Title:  Genome biology and evolution     Volume:  2     ISSN:  1759-6653     ISO Abbreviation:  Genome Biol Evol     Publication Date:  2010  
Date Detail:
Created Date:  2010-03-24     Completed Date:  2010-05-20     Revised Date:  2013-10-24    
Medline Journal Info:
Nlm Unique ID:  101509707     Medline TA:  Genome Biol Evol     Country:  England    
Other Details:
Languages:  eng     Pagination:  53-66     Citation Subset:  -    
Affiliation:
Present address: Jet Propulsion Laboratory, NASA Biotechnology and Planetary Protection Group, Pasadena, California, USA.
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