Abstract
A Gram-negative, aerobic, motile, non-spore-forming and rod-shaped bacterium, designated strain B18-69 T, was isolated from oil-well production liquid in Baolige oilfield, China. The strain was able to grow at pH 6–9.5 (optimum at pH 7), in 0–4% (w/v) NaCl (optimum at 0.5–1%, w/v) and at 35–60 °C (optimum at 55 °C). Major cellular fatty acids were C16:0, C19:0 cyclo ω8c, C17:0 cyclo and C18:1 ω7c. The predominant respiratory quinone was ubiquinone 8. Major polar lipids were phosphatidylethanolamine (PE), phosphatidylglycerol (PG), diphosphatidylglycerol (DPG) and phosphatidylcholine (PC). Phylogenetic analysis based on 16S rRNA gene sequences revealed that strain B18-69 T was most closely related to Tepidiphilus margaritifer DSM 15129 T (98.8% similarity). The draft genome of strain B18-69 T was composed of 2,250,419 bp, and the G+C content was 64.6 mol%. Average nucleotide identity (ANI) and digital DNA–DNA hybridization (dDDH) values between strain B18-69 T and T. margaritifer DSM 15129 T were 90.9% and 68.9%, respectively. Genotypic and phenotypic features indicate that strain B18-69 T represents a novel species of the genus Tepidiphilus, for which the name Tepidiphilus baoligensis sp. nov. is proposed. The type strain is B18-69 T (= CGMCC 1.13573 T = KCTC 62782 T).
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Data Availability
The GenBank accession numbers for the 16S rRNA gene sequence and the draft genome of strain B18-69T are MH209249 and JAAAUB000000000, respectively.
Abbreviations
- dDDH:
-
Digital DNA–DNA hybridization
- GGDC:
-
Genome-to-genome distance calculation
- ANI:
-
Average nucleotide identity
- ML:
-
Maximum-likelihood
- MP:
-
Maximum-parsimony
- NJ:
-
Neighbor-joining
- DPG:
-
Diphosphatidylglycerol
- PC:
-
Phosphatidylcholine
- PE:
-
Phosphatidylethanolamine
- PG:
-
Phosphatidylglycerol
- HPLC:
-
High-performance liquid chromatography
- TSA:
-
Tryptic soy agar
- CHES:
-
2-(Cyclohexylamino)ethanesulfonic acid
- MES:
-
2-(N-Morpholino)ethanesulfonic acid
- MOPS:
-
3-(N-Morphine)propanesulfonic acid
- TAPS:
-
N-Tris(hydroxymethyl)methyl-3-aminopropanesulfonic acid
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Acknowledgements
This work was supported by the National Key R&D Program of China (2018YFA0902101) and the Huabei Oilfield Company (2017-HB-B19).
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XZ and XM tested the phenotypic and chemotaxonomic characteristics. GW and JLY isolated the strain, and participated in the morphology investigation and the 16S rRNA gene and genome sequence. YX designed the tests, analyzed the data and prepared the manuscript. JY and YM conceived of the study and participated in the data analysis and paper writing. All authors approved the manuscript and its submission.
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Zhang, X., Wang, G., Ma, X. et al. Tepidiphilus baoligensis sp. nov., a Novel Bacterium of the Family Hydrogenophilaceae Isolated from an Oil Reservoir. Curr Microbiol 77, 1939–1944 (2020). https://doi.org/10.1007/s00284-020-01983-8
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DOI: https://doi.org/10.1007/s00284-020-01983-8