| Ileibacterium valens |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Bacillota (Firmicutes), Class Erysipelotrichia, Order Erysipelothrichales, Family Erysipelotrichaceae, Genus Ileibacterium,
Ileibacterium valens Cox et al. 2017, type species of the genus.
Ileibacterium valens Cox et al. 2017, type species of the genus.
Gram-positive, short rods and cocci, appearing singly, in pairs and in chains.
Non-spore-forming. Non-motile.
Non-spore-forming. Non-motile.
Colonies on Brucella agar supplemented with blood are grey-coloured and 0.5mm in
24h and 2-3mm in 48-72h. Grows in MTGE broth, but not in Brucella broth, chopped
meat broth or thioglycolate broth. Growth is optimal at 37C; weak growth occurs at 30
ºC and no growth at 42 ºC. Strictly anaerobic.
24h and 2-3mm in 48-72h. Grows in MTGE broth, but not in Brucella broth, chopped
meat broth or thioglycolate broth. Growth is optimal at 37C; weak growth occurs at 30
ºC and no growth at 42 ºC. Strictly anaerobic.
Isolated from murine intestinal contents.
Undetermined.
- Cox LM, Sohn J, Tyrrell KL, Citron DM, Lawson PA, Patel NB, Iizumi T, Perez-Perez GI, Goldstein EJC, Blaser MJ. Description of two
novel members of the family Erysipelotrichaceae: Ileibacterium valens gen. nov., sp. nov. and Dubosiella newyorkensis, gen. nov.,
sp. nov., from the murine intestine, and emendation to the description of Faecalibaculum rodentium. Int J Syst Evol Microbiol
2017; 67:1247-1254.
Positive results for alpha-galactosidase, beta-galactosidase and beta-glucosidase.
Negative results for alkaline phosphatase, arginine dihydrolase, arginine arylamidase, alpha-arabinosidase, catalase, lipase,
N-acetyl-beta-glucosaminidase, alanine arylamidase, alpha-fucosidase, alpha-glucosidase, 6-phospho-beta-galactosidase,
beta-glucuronidase, glycine arylamidase, glutamic acid decarboxylase, histidine arylamidase, indole production, leucine
arylamidase, leucyl-glycine arylamidase, nitrate reduction, phenylalanine arylamidase, proline arylamidase, serine arylamidase,
tyrosine arylamidase and urease.
Variable results for alpha-glucosidase, pyroglutamic acid arylamidase, acid production from D-mannose and raffinose.
Negative results for alkaline phosphatase, arginine dihydrolase, arginine arylamidase, alpha-arabinosidase, catalase, lipase,
N-acetyl-beta-glucosaminidase, alanine arylamidase, alpha-fucosidase, alpha-glucosidase, 6-phospho-beta-galactosidase,
beta-glucuronidase, glycine arylamidase, glutamic acid decarboxylase, histidine arylamidase, indole production, leucine
arylamidase, leucyl-glycine arylamidase, nitrate reduction, phenylalanine arylamidase, proline arylamidase, serine arylamidase,
tyrosine arylamidase and urease.
Variable results for alpha-glucosidase, pyroglutamic acid arylamidase, acid production from D-mannose and raffinose.
(c) Costin Stoica
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