Description of <i>Thermococcus kodakaraensis</i> sp. nov., a well studied hyperthermophilic archaeon previously reported as <i>Pyrococcus</i> sp. KOD1

Atomi, Haruyuki; Fukui, Toshiaki; Kanai, Tamotsu; Morikawa, Masaaki; Imanaka, Tadayuki

doi:https://doi.org/10.1155/2004/204953

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Research Article | Open Access

Volume 1 | Article ID 204953 | https://doi.org/10.1155/2004/204953

Description of Thermococcus kodakaraensis sp. nov., a well studied hyperthermophilic archaeon previously reported as Pyrococcus sp. KOD1

Haruyuki Atomi,¹Toshiaki Fukui,¹Tamotsu Kanai,¹Masaaki Morikawa,²and Tadayuki Imanaka¹

Received12 Dec 2003

Accepted10 Mar 2004

Abstract

A hyperthermophilic archaeal strain, KOD1, isolated from a solfatara on Kodakara Island, Japan, has previously been reported as Pyrococcus sp. KOD1. However, a detailed phylogenetic tree, made possible by the recent accumulation of 16S rRNA sequences of various species in the order Thermococcales, indicated that strain KOD1 is a member of the genus Thermococcus. We performed DNA–DNA hybridization tests against species that displayed high similarity in terms of 16S ribosomal DNA sequences, including Thermococcus peptonophilus and Thermococcus stetteri. Hybridization results and differences in growth characteristics and substrate utilization differentiated strain KOD1 from T. peptonophilus and T. stetteri at the species level. Our results indicate that strain KOD1 represents a new species of Thermococcus, which we designate as Thermococcus kodakaraensis KOD1 sp. nov.

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Copyright © 2004 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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