Terrisporobacter hibernicus sp. nov., isolated from bovine faeces in Northern Ireland

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Abstract

A new species of Terrisporobacter, a Gram-positive, spore-forming anaerobic group, proposed name Terrisporobacter hiberni-cus sp. nov., was isolated in Northern Ireland from bovine faeces collected in 2016. Designated as MCA3T, cells of T. hibernicus sp. nov. are rod shaped and motile. Cells tolerate NaCl from 0.5 to 5.5 % (w/v), with a pH tolerance between pH 6 and 9. The optimal temperature for growth is 35–40 °C, and temperatures from 20 to 30 °C are tolerated. The polar lipid profile displays diphosphatidylglycerol, phosphatidylglycerol, two aminoglycolipids, one glycophospholipid, one aminolipid, three glycolipids, five phospholipids and one lipid. No respiratory quinones are detected. The predominant fatty acid profile includes C16: 0 at 22.8 %. Strain MCA3T is positive for glucose and maltose acidification, as well as glycerol and sorbitol. The biochemical results from a VITEK2 assay of strain MCA3T, Terrisporobacter petrolearius LAM0A37T and Terrisporobacter mayombei DSM 6539T are also included for the first time. The closed and complete genome of strain MCA3T from a hybrid Oxford Nanopore Technology MinION/Illumina assembly reveals no evidence for known virulence genes. Draft genome sequencing of T. mayombei DSM 6539T and T. petrolearius LAM0A37T, as performed by Illumina MiSeq, provides reference genomes for these respective species of Terrisporobacter for the first time. DNA–DNA hybridization values (d4) of MCA3T to Terrisporobacter glycolicus ATCC 14880T, T. petrolearius LAM0A37T and T. mayombei DSM 6539T are 48.8, 67.4 and 46.3 %, with cutoff value at 70 %. The type strain for T. hibernicus sp. nov. is MCA3T (=NCTC 14625T=LMG 32430T).

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Mitchell, M., Nguyen, S. V., Connor, M., Fairley, D. J., Donoghue, O., Marshall, H., … Fanning, S. (2023). Terrisporobacter hibernicus sp. nov., isolated from bovine faeces in Northern Ireland. International Journal of Systematic and Evolutionary Microbiology, 73(1). https://doi.org/10.1099/ijsem.0.005667

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