Microbacterium profundi sp. nov., isolated from deep-sea sediment of polymetallic nodule environments

Yue Hong Wu, Min Wu, Chun Sheng Wang, Xiao Gu Wang, Jun Yi Yang, Aharon Oren, Xue Wei Xu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

A Gram-positive, aerobic, neutrophilic and rod-shaped bacterium, strain Shh49T, was isolated from a deep-sea sediment sample collected from the East Pacific polymetallic nodule region. The strain was able to grow within a temperature range of 4-35 °C and tolerated up to 7.5% (w/v) NaCl. Strain Shh49T was characterized chemotaxonomically by having MK-12 and MK-13 as predominant isoprenoid quinones, anteiso-C15:0, iso-C15:0, iso-C16:0 and anteiso-C17:0 as major fatty acids and ornithine as cell-wall diamino acid. The genomic DNA G+C content was 66.8 mol%. On the basis of 16S rRNA gene sequence similarities, the closest phylogenetic neighbours were the type strains of Microbacterium phyllosphaerae (98.3%) and Microbacterium keratanolyticum (98.0%), but strain Shh49T could be clearly distinguished from its phylogenetic relatives with reference to a broad range of physiological and biochemical markers. DNA-DNA relatedness of strain Shh49T with M. phyllosphaerae DSM 13468T and M. keratanolyticum DSM 8606T was 56 and 31%, respectively. On the basis of phenotypic and genotypic data presented in this study, strain Shh49T represents a novel species of the genus Microbacterium, for which the name Microbacterium profundi sp. nov. is proposed. The type strain is Shh49T (=CGMCC 1.6777T =JCM 14840T).

Original languageAmerican English
Pages (from-to)2930-2934
Number of pages5
JournalInternational Journal of Systematic and Evolutionary Microbiology
Volume58
Issue number12
DOIs
StatePublished - 2008

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