| Vagococcus silagei |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Bacillota (Firmicutes), Class Bacilli, Order Lactobacillales, Family Enterococcaceae, Genus Vagococcus, Vagococcus silagei
Wu et al. 2020.
Species description is based on a single isolate.
Wu et al. 2020.
Species description is based on a single isolate.
Gram-positive ovoid cocci, 0.8 x 1.5-2.0 µm, occurring singly or in pairs, rarely in chains.
Non-motile. Non-spore-forming.
Non-motile. Non-spore-forming.
Colonies on TSA are 0.5-1 mm in diameter, grey-white, convex, sticky and circular to
slightly irregular after 3 days incubation at 30 ºC. In TSB, growth occurs at 10-37 ºC (not
at 4, 40 and 45 ºC), at pH 6-11 (not at pH 3-5) and in the presence of 1-6% (w/v) NaCl
(not in 7 and 8% (w/v) NaCl). Facultatively anaerobic.
slightly irregular after 3 days incubation at 30 ºC. In TSB, growth occurs at 10-37 ºC (not
at 4, 40 and 45 ºC), at pH 6-11 (not at pH 3-5) and in the presence of 1-6% (w/v) NaCl
(not in 7 and 8% (w/v) NaCl). Facultatively anaerobic.
Isolated from a brewer’s grain used to make silage at the Hsinchu branch of the Livestock Research Institute, Taiwan.
Undetermined.
- Wu YC, Lin ST, Guu JR, Tamura T, Mori K, Wang LT, Huang L, Watanabe K. Vagococcus silagei sp. nov., isolated from brewer's
grain used to make silage in Taiwan. Int J Syst Evol Microbiol 2020; 70:1953-1960.
Positive results for acid and alkaline phosphatase, arginine dihydrolase, ammonia production from arginine,
alanyl-phenylalanyl-proline arylamidase, cystine arylamidase, esterase (C4), esterase lipase (C8), glycyl-tryptophan arylamidase,
leucine arylamidase, naphthol-AS-BI-phosphohydrolase, pyroglutamic acid arylamidase, valine arylamidase, acid production from
alpha-cyclodextrin, glucose (without gas production), maltose, D-ribose, and D-tagatose.
Negative results for catalase, alpha-fucosidase, alpha-glucosidase, alpha- and beta-galactosidase, beta-glucuronidase, hippurate
hydrolysis, alpha-mannosidase, N-acetyl-beta-glucosaminidase, H2S production, indole production, nitrate reduction, oxidase,
trypsin, alpha-chymotrypsin, urease, Voges-Proskauer test, acid production from L-arabinose, D-arabitol,
N-acetyl-beta-glucosaminidase, glycogen, lactose, melibiose, melezitose, methyl beta-D-glucopyranoside, pullulan, raffinose,
D-sorbitol, sucrose, and trehalose.
alanyl-phenylalanyl-proline arylamidase, cystine arylamidase, esterase (C4), esterase lipase (C8), glycyl-tryptophan arylamidase,
leucine arylamidase, naphthol-AS-BI-phosphohydrolase, pyroglutamic acid arylamidase, valine arylamidase, acid production from
alpha-cyclodextrin, glucose (without gas production), maltose, D-ribose, and D-tagatose.
Negative results for catalase, alpha-fucosidase, alpha-glucosidase, alpha- and beta-galactosidase, beta-glucuronidase, hippurate
hydrolysis, alpha-mannosidase, N-acetyl-beta-glucosaminidase, H2S production, indole production, nitrate reduction, oxidase,
trypsin, alpha-chymotrypsin, urease, Voges-Proskauer test, acid production from L-arabinose, D-arabitol,
N-acetyl-beta-glucosaminidase, glycogen, lactose, melibiose, melezitose, methyl beta-D-glucopyranoside, pullulan, raffinose,
D-sorbitol, sucrose, and trehalose.
(c) Costin Stoica
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