Rubritalea squalenifaciens sp. nov., a squalene-producing marine bacterium belonging to subdivision 1 of the phylum ‘Verrucomicrobia’
Kasai, Hiroaki and Katsuta, Atsuko and Sekiguchi, Hiroshi and Matsuda, Satoru and Adachi, Kyoko and Shindo, Kazutoshi and Yoon, Jaewoo and Yokota, Akira and Shizuri, Yoshikazu,, 57, 1630-1634 (2007),
doi = https://doi.org/10.1099/ijs.0.65010-0,
publicationName = Microbiology Society,
issn = 1466-5026,
abstract= A taxonomic study was carried out to clarify the status of a Gram-negative, heterotrophic mesophile that was isolated from the marine sponge Halichondria okadai. The strain, designated HOact23T, was a non-motile, rod-shaped (0.44–0.53×0.65–0.79 μm) bacterium. The strain produced squalene and a red–pink carotenoid pigment. The cell-wall peptidoglycan contained meso-diaminopimelic acid, glutamic acid and alanine. The G+C content of the genomic DNA was 52.4 mol%. The major fatty acids were iso-C14 : 0 (43.1 %), iso-C16 : 0 (20.6 %) and anteiso-C15 : 0 (18.1 %), and the major isoprenoid quinone was MK-9 (90.8 %). Based on 16S rRNA gene sequence data, the strain formed a distinct group within subdivision 1 in the phylum ‘Verrucomicrobia’. It showed a range of phenotypic properties that distinguished it from its closest relative, Rubritalea marina Pol012T (94.3 % 16S rRNA gene sequence similarity). On the basis of polyphasic taxonomic evidence, it was concluded that strain HOact23T should be classified within a novel species in the genus Rubritalea. The name proposed for the taxon is Rubritalea squalenifaciens sp. nov., with the type strain HOact23T (=MBIC08254T=DSM 18772T).,
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