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Applied and Environmental Microbiology, July 2006, p. 5077-5082, Vol. 72, No. 7
0099-2240/06/$08.00+0     doi:10.1128/AEM.00052-06
Copyright © 2006, American Society for Microbiology. All Rights Reserved.

SHORT REPORT

16S rRNA Phylogenetic Investigation of the Candidate Division "Korarchaeota"

Thomas A. Auchtung,1 Cristina D. Takacs-Vesbach,2 and Colleen M. Cavanaugh1*

Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, Massachusetts 02138,1 Department of Biology, University of New Mexico, Albuquerque, New Mexico 871312

Received 9 January 2006/ Accepted 15 April 2006

The environmental distribution and phylogeny of "Korarchaeota," a proposed ancient archaeal division, was investigated by using the 16S rRNA gene framework. Korarchaeota-specific primers were designed based on previously published sequences and used to screen a variety of environments. Korarchaeota 16S rRNA genes were amplified exclusively from high temperature Yellowstone National Park hot springs and a 9°N East Pacific Rise deep-sea hydrothermal vent. Phylogenetic analyses of these and all available sequences suggest that Korarchaeota exhibit a high level of endemicity.

* Corresponding author. Mailing address: Harvard University, Biological Laboratories 4083, 16 Divinity Ave., Cambridge, MA 02138. Phone: (617) 495-2177. Fax: (617) 496-6933. E-mail: cavanaug{at}fas.harvard.edu.

Applied and Environmental Microbiology, July 2006, p. 5077-5082, Vol. 72, No. 7
0099-2240/06/$08.00+0     doi:10.1128/AEM.00052-06
Copyright © 2006, American Society for Microbiology. All Rights Reserved.



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