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Abstract

A novel Gram-stain-positive, white-pigmented, non-motile, non-sporulating, catalase- and oxidase-positive, strictly aerobic coccus, designated strain ZXM223, was isolated from a seawater sample collected from the coast of Qingdao, PR China, during a green algal bloom. It grew at pH 6.0–10.5 and 0–25.0 % (w/v) NaCl, with optimum growth at pH 8.5 and 3.0 % (w/v) NaCl. Growth occurred at 16–42 °C (optimum at 28 °C). The major fatty acids were anteiso-C and iso-C. Menaquinone 6 (MK-6) was the major respiratory quinone. The polar lipids were phosphatidylglycerol, three unidentified phospholipids and two unknown glycolipids. The peptidoglycan type was -Lys–Gly The genomic DNA G+C content was 43.5 mol%. Phylogenetic analysis of the 16S rRNA gene sequence placed strain ZXM223 within the genus , with sequence similarity of 92.2–97.1 % between ZXM223 and the type strains of this genus. The closest relatives were YIM Y15, ‘’ YIM-C678 and . T8. The DNA–DNA relatedness between strain ZXM223 and CGMCC 1.6302 and ‘’ CGMCC 1.6299 ( = YIM-C678) was 37±3 and 30±2 %, respectively. The phenotypic, chemotaxonomic and phylogenetic characteristics and low DNA–DNA relatedness support the proposal of a novel species of the genus , sp. nov., with the type strain ZXM223 ( = LMG 24855  = CGMCC 1.8895).

Funding
This study was supported by the:
  • National High Technology R&D Program of China (Award 2007AA09Z434)
  • National Natural Science Foundation of China (Award 40876067)
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2012-03-01
2024-03-29
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