Roseovarius pelagicus sp. nov., a facultatively anaerobic bacterium with potential for degrading polypropylene, isolated from Arctic seawater.
Int J Syst Evol Microbiol
; 73(8)2023 Aug.
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| MEDLINE
| ID: mdl-37561014
ABSTRACT
A Gram-stain-negative, facultatively anaerobic, non-motile, rod-shaped bacterial strain, designated HL-MP18T, was isolated from Arctic seawater after a prolonged incubation employing polypropylene as the sole carbon source. Phylogenetic analyses of the 16S rRNA gene sequence revealed that strain HL-MP18T was affiliated to the genus Roseovarius with close relatives Roseovarius carneus LXJ103T (96.8â%) and Roseovarius litorisediminis KCTC 32327T (96.5â%). The complete genome sequence of strain HL-MP18T comprised a circular chromosome of 3.86 Mbp and two circular plasmids of 0.17 and 0.24 Mbp. Genomic comparisons based on average nucleotide identity and digital DNA-DNA hybridization showed that strain HL-MP18T was consistently discriminated from its closely related taxa in the genus Roseovarius. Strain HL-MP18T showed optimal growth at 25 °C, pH 7.0 and 2.5â% (w/v) sea salts. The major cellular fatty acids were C18ââ1 ω6c and/or C18ââ1 ω7c (49.6â%), C19ââ0 cyclo ω8c (13.5â%), and C16ââ0 (12.8â%). The major respiratory quinone was ubiquinone-10. The polar lipids consisted of phosphatidylcholine, phosphatidylglycerol, an unidentified aminolipid and three unidentified lipids. The genomic DNA G+C content of the strain was 59.2âmol%. The phylogenetic, genomic, phenotypic and chemotaxonomic results indicate that strain HL-MP18T is distinguishable from the recognized species of the genus Roseovarius. Therefore, we propose that strain HL-MP18T represents a novel species belonging to the genus Roseovarius, for which the name Roseovarius pelagicus sp. nov. is proposed. The type strain is HL-MP18T (=KCCM 90405T=JCM 35639T).
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MEDLINE
Asunto principal:
Polipropilenos
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Rhodobacteraceae
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Bacterias Anaerobias Gramnegativas
Idioma:
En
Revista:
Int J Syst Evol Microbiol
Asunto de la revista:
MICROBIOLOGIA
Año:
2023
Tipo del documento:
Article