Oceanicella actignis gen. nov., sp. nov., a halophilic slightly thermophilic member of the Alphaproteobacteria

Two isolates, designated PRQ-67T and PRQ-68, with an optimum growth temperature of about 50°C, growth range in medium containing between 1 and 9% NaCl and an optimum pH for growth between 7.5 and 8.0, were recovered from a shallow marine hot spring on a beach, Praia do Fogo, at Ribeira Quente, on th...

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Bibliographic Details
Published in:Systematic and applied microbiology 2012-09, Vol.35 (6), p.385-389
Main Authors: Albuquerque, Luciana, Rainey, Fred A., Nobre, M. Fernanda, da Costa, Milton S.
Format: Article
Language:English
Subjects:
Alphaproteobacteria
Animal, plant and microbial ecology
Azores
Bacteriology
Biological and medical sciences
Chromatography, Thin Layer
Fundamental and applied biological sciences. Psychology
Genes, Bacterial - genetics
Hot Springs - microbiology
Lipids - analysis
Lipids - chemistry
Microbial ecology
Microbiology
Molecular Sequence Data
New taxa
Oceanicella actignis
Rhodobacteraceae - chemistry
Rhodobacteraceae - classification
Rhodobacteraceae - genetics
Rhodobacteraceae - isolation & purification
RNA, Ribosomal, 16S - genetics
Seawater - microbiology
Systematics
Various environments (extraatmospheric space, air, water)
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Summary:Two isolates, designated PRQ-67T and PRQ-68, with an optimum growth temperature of about 50°C, growth range in medium containing between 1 and 9% NaCl and an optimum pH for growth between 7.5 and 8.0, were recovered from a shallow marine hot spring on a beach, Praia do Fogo, at Ribeira Quente, on the Island of São Miguel in the Azores. Comparisons of 16S rRNA gene sequences show these strains to be most closely related (93.1–94.7% similarity) to species of the genus Amaricoccus, within the family Rhodobacteraceae. Strains are non-pigmented and form non-motile pleomorphic cells that stain Gram-negative, are aerobic, oxidase and catalase positive. The major fatty acids are C18:1ω7c and C18:1ω7c 11-methyl. Ubiquinone 10 is the major respiratory quinone. Major polar lipids are phosphatidylcholine, phosphatidylglycerol and one aminolipid. Based on 16S rRNA gene sequence analysis, physiological and biochemical characteristics we describe a new species of a novel genus represented by strain PRQ-67T (=DSM 22673T=LMG 25334T) for which we propose the name Oceanicella actignis.
ISSN:0723-2020
1618-0984
DOI:10.1016/j.syapm.2012.07.001