Abstract
A new Alcanivorax sp. VBW004 was isolated from a shallow hydrothermal vent in Azores Island, Portugal. In this study, we determined VBW004 was resistant to copper. This strain showed maximum tolerance of copper concentrations up to 600 μg/mL. Based on 16S rRNA gene sequencing and phylogeny revealed that this strain was more closely related to Alcanivorax borkumensis SK2. We sequenced the genome of this strain that consist of 3.8 Mb size with a G + C content of 58.4 %. In addition, digital DNA-DNA hybridizations (dDDH) and the average nucleotide identities (ANI) analysis between Alcanivorax borkumensis SK2 and Alcanivorax jadensis T9 revealed that Alcanivorax sp. VBW004 belongs to new species. Functional annotation revealed that the genome acquired multiple copper resistance encoding genes that could assist VBW004 to respond to high Cu toxicity. Our results from biosorption analysis presumed that the VBW004 is an ecologically important bacterium that could be useful for copper bioremediation.
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