Marinobacterium nitratireducens sp. nov. and Marinobacterium sediminicola sp. nov., isolated from marine sediment

Ying Yi Huo, Xue Wei Xu*, Yi Cao, Chun Sheng Wang, Xu Fen Zhu, Aharon Oren, Min Wu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

Two strains, CN44T and CN47T, isolated from marine sediment of the East China Sea, were characterized by using a polyphasic approach. The isolates were Gram-negative, strictly aerobic, non-spore-forming rods. The chemotaxonomic characteristics of these isolates included the presence of C18:1ω7c, C16:0, iso-C15:0 2-OH and/or C16:1ω7c and C10:0 3-OH as the major cellular fatty acids and Q-8 as the predominant ubiquinone. The DNA G+C contents of strains CN44T and CN47T were 62.5 and 56.3 mol%, respectively. Phylogenetic analyses based on 16S rRNA gene sequences revealed that strain CN44T was related to members of the genus Marinobacterium. The most closely related described organism was the type strain of Marinobacterium rhizophilum (95.3% sequence similarity). Strain CN47T showed the highest sequence similarity to the type strain of Marinobacterium stanieri (97.8 %) and <97% similarity to other type strains of described Marinobacterium species. The level of DNA-DNA relatedness between strain CN47T and M. stanieri DSM 7027T was 46 %. On the basis of phenotypic and genotypic properties, strains CN44T and CN47T represent two novel species within the genus Marinobacterium, for which the names Marinobacterium nitratireducens sp. nov. (type strain, CN44T =CGMCC 1.7286T =JCM 15523T) and Marinobacterium sediminicola sp. nov. (type strain, CN47T =CGMCC 1.7287T =JCM 15524T) are proposed.

Original languageAmerican English
Pages (from-to)1173-1178
Number of pages6
JournalInternational Journal of Systematic and Evolutionary Microbiology
Volume59
Issue number5
DOIs
StatePublished - 2009

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