| Arcobacter parvus |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Pseudomonadota (Proteobacteria), Class Epsilonproteobacteria, Order Campylobacterales, Family Arcobacteraceae, Genus
Arcobacter, Arcobacter parvus (Kim et al. 2021) On et al. 2021.
Synonym: Poseidonibacter parvus Kim et al. 2021.
Arcobacter, Arcobacter parvus (Kim et al. 2021) On et al. 2021.
Synonym: Poseidonibacter parvus Kim et al. 2021.
Gram-negative, shortcurved rods, 0.5-0.9 x 0.6-1.5 µm. Motile by a single polar
flagellum.
flagellum.
Colonies are circular, convex and pinkish-brown on MA. Grows on MA and MA with
0.04% TTC (weak), but not on MA with 1% glycine. Does not grow on R2A, TSA,
MacConkey agar or NA supplemented with 4% sea salt. Grows at 10-25 ºC (optimum,
25 ºC), pH 6.0–9.0 (optimum, pH 7.0) and in 2-4.5% (w/v) NaCl (optimum, 3.5%).
Grows aerobically and microaerobically, but not under anaerobic conditions with
nitrate as an electron acceptor.
0.04% TTC (weak), but not on MA with 1% glycine. Does not grow on R2A, TSA,
MacConkey agar or NA supplemented with 4% sea salt. Grows at 10-25 ºC (optimum,
25 ºC), pH 6.0–9.0 (optimum, pH 7.0) and in 2-4.5% (w/v) NaCl (optimum, 3.5%).
Grows aerobically and microaerobically, but not under anaerobic conditions with
nitrate as an electron acceptor.
Isolated from a squid caught in Jumunjin Port, Republic of Korea.
Intermediate resistance to nalidixic acid (30 µg). Sensitive to cephalothin (30 µg).
Intermediate resistance to nalidixic acid (30 µg). Sensitive to cephalothin (30 µg).
Undetermined.
- Kim MJ, Baek MG, Shin SK, Yi H. Poseidonibacter parvus sp. nov., isolated from a squid. Int J Syst Evol Microbiol 2021; 71:4590.
- On SLW, Miller WG, Biggs PJ, Cornelius AJ, Vandamme P. Aliarcobacter, Halarcobacter, Malaciobacter, Pseudarcobacter and
Poseidonibacter are later synonyms of Arcobacter: transfer of Poseidonibacter parvus, Poseidonibacter antarcticus,
'Halarcobacter arenosus', and 'Aliarcobacter vitoriensis' to Arcobacter as Arcobacter parvus comb. nov., Arcobacter antarcticus
comb. nov., Arcobacter arenosus comb. nov. and Arcobacter vitoriensis comb. nov. Int J Syst Evol Microbiol 2021; 71:5133.
Positive results for acid phosphatase (weak), alkaline phosphatase, catalase, esterase lipase (C8) (weak), hippurate hydrolysis,
indole production, naphthol-AS-BI-phosphohydrolase (weak), nitrate reduction and oxidase.
Negative results for arginine dihydrolase, adenine hydrolysis, alginic acid hydrolysis, cystine arylamidase, chitinase, CM-cellulose
hydrolysis, caseinase, DNase, esterase (C4), alpha-fucosidase, aesculin hydrolysis, gelatinase, alpha- and beta-galactosidase,
beta-glucuronidase, alpha- and beta-glucosidase, indoxyl acetate hydrolysis, lipase (C14), leucine arylamidase, alpha-mannosidase,
N-acetyl-beta-glucosaminidase, starch hydrolysis, selenite reduction, L-tyrosine hydrolysis, trypsin, alpha-chymotrypsin, Tween 20,
40, 60 or 80 hydrolysis, urease, xanthine hydrolysis, hypoxanthine hydrolysis, valine arylamidase, acid production from: glucose.
indole production, naphthol-AS-BI-phosphohydrolase (weak), nitrate reduction and oxidase.
Negative results for arginine dihydrolase, adenine hydrolysis, alginic acid hydrolysis, cystine arylamidase, chitinase, CM-cellulose
hydrolysis, caseinase, DNase, esterase (C4), alpha-fucosidase, aesculin hydrolysis, gelatinase, alpha- and beta-galactosidase,
beta-glucuronidase, alpha- and beta-glucosidase, indoxyl acetate hydrolysis, lipase (C14), leucine arylamidase, alpha-mannosidase,
N-acetyl-beta-glucosaminidase, starch hydrolysis, selenite reduction, L-tyrosine hydrolysis, trypsin, alpha-chymotrypsin, Tween 20,
40, 60 or 80 hydrolysis, urease, xanthine hydrolysis, hypoxanthine hydrolysis, valine arylamidase, acid production from: glucose.
(c) Costin Stoica
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