Millimeter-scale genetic gradients and community-level molecular convergence in a hypersaline microbial mat

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Item Type:	Article
Title:	Millimeter-scale genetic gradients and community-level molecular convergence in a hypersaline microbial mat
Creators Name:	Kunin, V., Raes, J., Harris, J.K., Spear, J.R., Walker, J.J., Ivanova, N., von Mering, C., Bebout, B.M., Pace, N.R., Bork, P. and Hugenholtz, P.
Abstract:	To investigate the extent of genetic stratification in structured microbial communities, we compared the metagenomes of 10 successive layers of a phylogenetically complex hypersaline mat from Guerrero Negro, Mexico. We found pronounced millimeter-scale genetic gradients that were consistent with the physicochemical profile of the mat. Despite these gradients, all layers displayed near-identical and acid-shifted isoelectric point profiles due to a molecular convergence of amino-acid usage, indicating that hypersalinity enforces an overriding selective pressure on the mat community.
Keywords:	Amino Acids, Microbial Genetics, Mexico, Salinity, Selection (Genetics)
Source:	Molecular Systems Biology
ISSN:	1744-4292
Publisher:	Nature Publishing Group
Volume:	4
Page Range:	198
Date:	2008
Official Publication:	https://doi.org/10.1038/msb.2008.35
PubMed:	View item in PubMed

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