The phylogenetic position of the Thermococcus isolate AN1 based on 16S rRNA gene sequence analysis: a proposal that AN1 represents a new species, Thermococcus zilligii sp. nov. |
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| Authors: | R. S. Ronimus A.-L. Reysenbach D. R. Musgrave H. W. Morgan |
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| Affiliation: | (1) Thermophile Research Unit, University of Waikato, Private Bag 3105, Hamilton, New Zealand Tel. +64-07-856-2889 ext. 8266; Fax +64-07-838-4324 e-mail: ronimus@waikato.ac.nz, NZ;(2) Department of Biochemistry and Microbiology, Lipman Hall, Cook College, Rutgers University, New Brunswick, NJ, USA Tel. +1-908-932-6555 ext. 373; Fax +1-908-932-6557, CK;(3) Biological Sciences, University of Waikato, Private Bag 3105, Hamilton, New Zealand Fax +64-07-838-4324, NZ |
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| Abstract: | The 16S rRNA gene from the Thermococcus New Zealand isolate AN1 was cloned and sequenced. Analysis of the gene revealed the presence of signature sequences, indicating that strain AN1 represents a new species of the genus Thermococcus. Since the isolate AN1 differed from other thermococci in both its lower optimal NaCl concentration and generally lower optimal temperature for growth, in its unusual lipid membrane composition, and in its sensitivity to antibiotics, we propose that strain AN1 represents a new species of Thermococcus. The proposed name is Thermococcus zilligii, and the type strain is DSM 2770. Received: 13 February 1997 / Accepted: 30 May 1997 |
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| Keywords: | Thermophile Thermococcus Pyrococcus 16S rRNA Archaea Euryarchaeota Extremophile Phylogeny Taxonomy |
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