Maribacter cobaltidurans sp. nov., a heavy-metal-tolerant bacterium isolated from deep-sea sediment

International Journal of Systematic and Evolutionary Microbiology
Chen FangXue-Wei Xu

Abstract

A Gram-stain-negative, aerobic, non-motile and rod-shaped bacterium, designated B1T, was isolated from deep-sea sediment collected from the South Atlantic Ocean. Cells of strain B1Tgrew in medium containing 0.5-6.0 % (w/v) NaCl (optimum 1.0-2.0 %), at pH 5.5-7.5 (optimum pH 7.0) and at 15-37 °C (optimum 30 °C). Aesculin, starch and Tweens 20, 40 and 60 were hydrolysed. The strain was able to grow in medium containing a high concentration of Co2+(10 mM). The 16S rRNA gene sequence of strain B1Tshared high similarity with respect to Maribacter orientalis DSM 16471T(97.7 %), and exhibited less than 97.0 % sequence similarity with the type strains of other species with validly published names. Phylogenetic analyses revealed that strain B1Tfell within the cluster comprising Maribacter species and formed an independent lineage. The average nucleotide identity and in silico DNA-DNA hybridization values between strain B1Tand M. orientalis DSM 16471Twere 72.0 % and 17.6 %, respectively. Strain B1Tcontained menaquinone 6 (MK-6) as the sole isoprenoid quinone and iso-C17 : 0 3-OH, iso-C15 : 0 and iso-C15 : 1 G as the predominant cellular fatty acids. The major polar lipids were phosphatidylethanolamine, one unidentified aminolipid and two...Continue Reading

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Citations

Jun 13, 2018·International Journal of Systematic and Evolutionary Microbiology·Heeyoung KangKiseong Joh
Sep 18, 2018·International Journal of Systematic and Evolutionary Microbiology·Dong Wan LeeJae-Jin Kim
Apr 4, 2019·International Journal of Systematic and Evolutionary Microbiology·Fan-Xu MengXue-Wei Xu
Feb 3, 2021·International Journal of Systematic and Evolutionary Microbiology·Yan GaoXue-Wei Xu
Feb 2, 2022·International Journal of Systematic and Evolutionary Microbiology·Yunjeong LeeWonyong Kim

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