IJSEM Sign up for IJSEM eTOCs
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

This Article
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Supplementary Figures
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Right arrow Citation Map
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via CrossRef
Google Scholar
Right arrow Articles by Nunoura, T.
Right arrow Articles by Horikoshi, K.
PubMed
Right arrow PubMed Citation
Right arrow Articles by Nunoura, T.
Right arrow Articles by Horikoshi, K.
Agricola
Right arrow Articles by Nunoura, T.
Right arrow Articles by Horikoshi, K.
Int J Syst Evol Microbiol 58 (2008), 676-681; DOI  10.1099/ijs.0.64615-0
© 2008 International Union of Microbiological Societies

Hydrogenivirga okinawensis sp. nov., a thermophilic sulfur-oxidizing chemolithoautotroph isolated from a deep-sea hydrothermal field, Southern Okinawa Trough

Takuro Nunoura, Masayuki Miyazaki, Yohey Suzuki, Ken Takai and Koki Horikoshi

Subground Animalcule Retrieval (SUGAR) Program, Extremobiosphere Research Center, Japan Agency for Marine-Earth Science & Technology (JAMSTEC), 2-15 Natsushima-cho, Yokosuka 237-0061, Japan

Correspondence
Takuro Nunoura
takuron{at}jamstec.go.jp

A novel extremely thermophilic sulfur-oxidizing bacterium, strain LS12-2T, was isolated from a deep-sea hydrothermal field at the Yonaguni Knoll IV, Southern Okinawa Trough. Cells of strain LS12-2T were motile rods, 1.5–4.0 µm in length and 0.4–0.5 µm in width. Strain LS12-2T was an obligate chemolithoautotroph that could utilize elemental sulfur or thiosulfate as an electron donor and nitrate or oxygen as an electron acceptor. Growth was observed at 65–85 °C (optimum 70–75 °C), pH 5.8–8.3 (optimum pH 6.9–7.5), 1.0–4.0 % (w/v) NaCl (optimum 2.5 %) and 1.0–7.0 % O2 in the gas phase (optimum 3.0 %). Fatty acids detected were C16 : 0 (8.0 %), C18 : 0 (9.0 %), C18 : 1 (62.5 %) and C20 : 1 (20.5 %). The genomic DNA G+C content was 51.3 mol%. 16S rRNA gene sequence analysis indicated that strain LS12-2T belonged to the genus Hydrogenivirga. Based on physiological and phylogenetic characteristics of the isolate, it is proposed that this strain represents a novel species in the genus Hydrogenivirga, Hydrogenivirga okinawensis sp. nov. The type strain of Hydrogenivirga okinawensis is LS12-2T (=JCM 13302T=DSM 17378T).

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain LS12-2T is AB235314.

An electron micrograph of a negatively stained cell of LS12-2T and graphs showing the effects of temperature, pH, NaCl and O2 on growth of strain LS12-2T are available with the online version of this paper.






HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
INT J SYST EVOL MICROBIOL MICROBIOLOGY J GEN VIROL
J MED MICROBIOL ALL SGM JOURNALS
Copyright © 2008 by the International Union of Microbiological Societies.