Halorhabdus tiamatea sp nov., a non-pigmented, extremely halophilic archaeon from a deep-sea, hypersaline anoxic basin of the Red Sea, and emended description of the genus Halorhabdus

Antunes, Andre and Taborda, Marco and Huber, Robert and Moissl, Christine and Nobre, M. Fernanda and da Costa, Milton S. (2008) Halorhabdus tiamatea sp nov., a non-pigmented, extremely halophilic archaeon from a deep-sea, hypersaline anoxic basin of the Red Sea, and emended description of the genus Halorhabdus. INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY, 58. pp. 215-220. ISSN 1466-5026,

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Abstract

An extremely halophilic archaeon was isolated from a sample of the brine-sediment interface of the Shaban Deep in the northern Red Sea. Phylogenetic analysis of the 16S rRNA gene sequence revealed a close proximity to Halorhabdus utahensis (99.3%), the sole species of the genus Halorhabdus. Strain SARL4B(T) formed non-pigmented colonies and showed optimum growth at 45 degrees C, in 27% (w/v) NaCl and at pH 6.5 - 7.0. This organism utilized a few complex substrates, such as yeast extract and starch, for growth. Strain SARL4B(T) grew under anaerobic and microaerophilic conditions but grew extremely poorly under aerobic conditions. The ether lipids were diphytanyl derivatives. The DNA G+C content of the type strain was 61.7 mol%. On the basis of the phylogenetic data and physiological and biochemical characteristics, strain SARL4B(T) represents a novel species of the genus Halorhabdus, for which the name Halorhabdus tiamatea is proposed. The type strain is SARL4B(T) (=DSM 18392(T)=JCM 1447 1 T). An emended description of the genus Halorhabdus is also proposed.

Item Type: Article
Uncontrolled Keywords: BRINE-SEAWATER INTERFACE; SHABAN DEEP; KEBRIT DEEP; DIVERSITY; HYBRIDIZATION; SEQUENCES; COMMUNITY; DNA;
Subjects: 500 Science > 570 Life sciences
Divisions: Biology, Preclinical Medicine > Institut für Biochemie, Genetik und Mikrobiologie > Lehrstuhl für Mikrobiologie (Archaeenzentrum)
Depositing User: Dr. Gernot Deinzer
Date Deposited: 13 Nov 2020 12:55
Last Modified: 13 Nov 2020 12:55
URI: https://pred.uni-regensburg.de/id/eprint/31664

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