MILLIMETER-SCALE GENETIC GRADIENTS AND COMMUNITY-LEVEL MOLECULAR CONVERGENCE IN A HYPERSALINE MICROBIAL MAT
Journal Article
·
· Molecular Systems Biology
OSTI ID:929406
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 are 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.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- Genomics Division
- DOE Contract Number:
- DE-AC02-05CH11231
- OSTI ID:
- 929406
- Report Number(s):
- LBNL-327E; TRN: US200814%%135
- Journal Information:
- Molecular Systems Biology, Vol. 4, Issue 198; Related Information: Journal Publication Date: 06/03/2008
- Country of Publication:
- United States
- Language:
- English
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Tue Jan 01 00:00:00 EST 1985
· Geol. Soc. Am., Abstr. Programs; (United States)
·
OSTI ID:929406