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Science. 2003 Aug 15;301(5635):976-8. Epub 2003 Jul 24.

Geographic barriers isolate endemic populations of hyperthermophilic archaea.

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  • 1Department of Plant and Microbial Biology, University of California, 111 Koshland Hall, Berkeley, CA 94720, USA. rwhitaker@nature.berkeley.edu

Abstract

Barriers to dispersal between populations allow them to diverge through local adaptation or random genetic drift. High-resolution multilocus sequence analysis revealed that, on a global scale, populations of hyperthermophilic microorganisms are isolated from one another by geographic barriers and have diverged over the course of their recent evolutionary history. The identification of a biogeographic pattern in the archaeon Sulfolobus challenges the current model of microbial biodiversity in which unrestricted dispersal constrains the development of global species richness.

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PMID:
12881573
[PubMed - indexed for MEDLINE]
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