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- Intestinibaculum porci gen. nov., sp. nov., a new member of the family Erysipelotrichaceae isolated from the small intestine of a swine
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Ji-Sun Kim , Hanna Choe , Yu-Ri Lee , Kyung Mo Kim , Doo-Sang Park
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J. Microbiol. 2019;57(5):381-387. Published online February 22, 2019
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DOI: https://doi.org/10.1007/s12275-019-8631-8
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Abstract
- A strictly anaerobic, Gram-stain-positive, catalase-negative,
non-motile, rod-shaped bacterium, designated SG0102T, was
isolated from the small intestine of a swine. Optimal growth
occurred at 37°C and pH 7.0. Furthermore, growth was observed
in the presence of up to 3% (w/v) NaCl but not at
salinity levels higher than 4%. The comparative analysis of
16S rRNA gene sequences showed that strain SG0102T was
most closely related to Kandleria vitulina DSM 20405T (93.3%),
followed by Catenibacterium mitsuokai KCTC 5053T (91.1%),
Sharpea azabuensis KCTC 15217T (91.0%), and Eggerthia catenaformis
DSM 5348T (89.6%). The average nucleotide identity
values between strain SG0102T and related species, K. vitulina
DSM 20405T, C. mitsuokai KCTC 5053T, S. azabuensis
KCTC 15217T, and E. catenaformis DSM 5348T, were 71.0,
69.3, 70.0, and 69.2%, respectively. The phylogenetic analysis
based on 16S rRNA gene sequence revealed that strain
SG0102T belonged to the family Erysipelotrichaceae in the
class Erysipelotrichia. The DNA G+C content of the strain
SG0102T was 39.5 mol%. The major cellular fatty acids (> 10%)
of strain SG0102T were C16:0, C16:0 dimethyl acetal, and C18:2
ω9/12c. The cell wall peptidoglycan of strain SG0102T contained
the meso-diaminopimelic acid. The strain SG0102T
produced lactic acid as a major end product of fermentation.
These distinct phenotypic and phylogenetic properties suggest
that strain SG0102T represents a novel species in a novel
genus of the family Erysipelotrichaceae, for which the name
Intestinibaculum porci gen. nov. sp. nov. is proposed. The
type strain is SG0102T (= KCTC 15725T = NBRC 113396T).
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