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Coraliomargarita akajimensis gen. nov., sp. nov., a novel member of the phylum ‘Verrucomicrobia’ isolated from seawater in Japan

Jaewoo Yoon¹, Mina Yasumoto-Hirose^2,, Atsuko Katsuta², Hiroshi Sekiguchi², Satoru Matsuda², Hiroaki Kasai² and Akira Yokota¹

¹ Institute of Molecular and Cellular Biosciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-Ku, Tokyo 113-0032, Japan
² Marine Biotechnology Institute Co. Ltd, 3-75-1, Heita, Kamaishi, Iwate 026-0001, Japan

Correspondence
Jaewoo Yoon
aa57058{at}mail.ecc.u-tokyo.ac.jp

An obligately aerobic, Gram-negative, non-spore-forming, non-motile, spherical bacterium, designated strain 04OKA010-24^T, was isolated from seawater surrounding the hard coral Galaxea fascicularis L., collected at Majanohama, Akajima, Japan, and was subjected to a polyphasic taxonomic study. Phylogenetic analyses based on the 16S rRNA gene sequence indicated that the new strain represented a member of the phylum ‘Verrucomicrobia’ and shared 84–95 % sequence similarity with cultivated strains of ‘Verrucomicrobia’ subdivision 4. Amino acid analysis of the cell-wall hydrolysate indicated the absence of muramic acid and diaminopimelic acid, which suggested that the strain did not contain peptidoglycan in the cell wall. The G+C content of the DNA was 53.9 mol%. MK-7 was the major menaquinone and C_{14 : 0}, C_{18 : 1}9c and C_{18 : 0} were the major fatty acids. On the basis of these data, it was concluded that strain 04OKA010-24^T represents a novel species in a new genus in subdivision 4 of the phylum ‘Verrucomicrobia’, for which the name Coraliomargarita akajimensis gen. nov., sp. nov. is proposed. The type strain of Coraliomargarita akajimensis is 04OKA010-24^T (=MBIC06463^T=IAM 15411^T=KCTC 12865^T).

Present address: Okinawa Prefecture Collaboration of Regional Entities for the Advancement of Technological Excellence, JST. Okinawa Health Biotechnology Research Development Center, 12-75 Suzaki, Uruma Okinawa 904-2234, Japan.

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