Treponema rectale sp. Nov., a spirochete isolated from the bovine rectum

Staton, Gareth J., Newbrook, Kerry, Clegg, Simon R. , Birtles, Richard J., Evans, Nicholas J. and Carter, Stuart D. (2017) Treponema rectale sp. Nov., a spirochete isolated from the bovine rectum. International Journal of Systematic and Evolutionary Microbiology, 67 (7). pp. 2470-2475. ISSN 1466-5026

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A Gram-stain-negative, obligatory anaerobic spirochete, CHPAT, was isolated from the rectal tissue of a Holstein-Friesian cow. On the basis of 16S rRNA gene comparisons, CHPAT was most closely related to the human oral spirochete, Treponema parvum, with 88.8 sequence identity. Further characterisation on the basis of recA gene sequence analysis, cell morphology, pattern of growth and physiological profiling identified marked differences with respect to other recognised species of the genus Treponema. Microscopically, the helical cells measured approximately 1–5μm long and 0.15–0.25μm wide, with two to five irregular spirals. Transmission electron microscopy identified four periplasmic flagella in a 2 : 4 : 2 arrangement. CHPAT grew independently of serum, demonstrated no evidence of haemolytic activity and possessed an in vitro enzyme activity profile that is unique amongst validly named species of the genus Treponema, exhibiting C4 esterase, α-galactosidase and β-galactosidase activity. Taken together, these data indicate that CHPAT represents a novel species of the genus Treponema, for which the name Treponema rectale is proposed. The type strain of Treponema rectale is CHPAT (=DSM 103679T=NCTC 13848T). © 2017 IUMS.

Keywords:alpha galactosidase, beta galactosidase, c4 esterase, esterase, RNA 16S, unclassified drug, bacterial DNA, RNA 16S, Article, bacterial growth, bacterium isolate, bovine, cell structure, enzyme activity, gene sequence, in vitro study, nonhuman, priority journal, rectum, sequence analysis, transmission electron microscopy, Treponema, Treponema rectale, animal, bacterium identification, classification, DNA sequence, genetics, isolation and purification, microbiology, phylogeny, United Kingdom, alpha-Galactosidase, Animals, Bacterial Typing Techniques, beta-Galactosidase, Cattle, DNA, Bacterial, Esterases, RNA, Ribosomal, 16S, Sequence Analysis, DNA, United Kingdom
Subjects:D Veterinary Sciences, Agriculture and related subjects > D420 Livestock
C Biological Sciences > C522 Veterinary Microbiology
Divisions:College of Science > School of Life Sciences
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ID Code:29851
Deposited On:06 Dec 2017 15:29

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