| Ruoffia halotolerans |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Bacillota (Firmicutes), Class Bacilli, Order Lactobacillales, Family Aerococcaceae, Genus Ruoffia, Ruoffia halotolerans
Fotedar et al. 2021.
Species description is based on a single isolate.
Fotedar et al. 2021.
Species description is based on a single isolate.
Gram-positive, ovoid cells, 0.8-0.9 µm in diameter, occurring in pairs or short chains.
Non-motile. Non-spore-forming.
Non-motile. Non-spore-forming.
Growth on blood agar is poor but good growth is obtained when supplemented with
2% Sea Salts. Colonies are alpha-haemolytic, small (0.5-0.8 mm in diameter after 24
h), circular, entire, shiny, convex and non-pigmented. Grows in 2-8% NaCl (optimum
5% NaCl), at 25 and 40 ºC (optimum at 37 ºC) and at pH 5-11 (optimum pH 7.5).
Facultatively anaerobic.
2% Sea Salts. Colonies are alpha-haemolytic, small (0.5-0.8 mm in diameter after 24
h), circular, entire, shiny, convex and non-pigmented. Grows in 2-8% NaCl (optimum
5% NaCl), at 25 and 40 ºC (optimum at 37 ºC) and at pH 5-11 (optimum pH 7.5).
Facultatively anaerobic.
Isolated from marine water sample collected from Inland Sea, a hyper saline lagoon in Doha, Qatar.
Undetermined.
- Fotedar R, Sankaranarayanan K, Caldwell ME, Zeyara A, Al Malki A, Kaul R, Al Shamari H, Ali M, Al Marri M, Lawson PA.
Reclassification of Facklamia ignava, Facklamia sourekii and Facklamia tabacinasalis as Falseniella ignava gen. nov., comb. nov.,
Hutsoniella sourekii gen. nov., comb. nov., and Ruoffia tabacinasalis gen. nov., comb. nov., and description of Ruoffia halotolerans
sp. nov., isolated from hypersaline Inland Sea of Qatar. Antonie Van Leeuwenhoek 2021; 114:1181-1193.
Positive results for acid phosphatase (weak), alkaline phosphatase, esterase C4 (weak), esterase lipase C8 (weak), gelatinase,
leucine arylamidase (weak), naphthol-AS-BI-phosphohydrolase, valine arylamidase (weak), alpha- and beta-galactosidase,
glycyl-tryptophan-arylamidase, pyroglutamic acid arylamidase, acid production from: maltose (weak), pullulan (weak), sucrose (weak)
and trehalose (weak).
Negative results for arginine dihydrolase, alaninephenylalanine-proline arylamidase, catalase, cystine arylamidase, aesculin
hydrolysis, alpha-fucosidase, alpha- and beta-glucosidase, beta-glucuronidase, hippurate hydrolysis, indole production, lipase C14,
alpha-mannosidase, nitrate reduction, N-acetyl-beta-glucosaminidase, oxidase, trypsin, alpha-chymotrypsin, urease,
Voges-Proskauer test, acid production from: amygdalin, L-arabinose, cyclodextrin, D-arabitol, D-glucose, glycogen, D-lactose,
D-mannitol, D-mannose, melezitose, melibiose, methyl-beta-D-glucopyranoside, N-acetyl-D-glucosaminidase, raffinose, D-ribose,
sorbitol, L-sorbose and D-tagatose.
leucine arylamidase (weak), naphthol-AS-BI-phosphohydrolase, valine arylamidase (weak), alpha- and beta-galactosidase,
glycyl-tryptophan-arylamidase, pyroglutamic acid arylamidase, acid production from: maltose (weak), pullulan (weak), sucrose (weak)
and trehalose (weak).
Negative results for arginine dihydrolase, alaninephenylalanine-proline arylamidase, catalase, cystine arylamidase, aesculin
hydrolysis, alpha-fucosidase, alpha- and beta-glucosidase, beta-glucuronidase, hippurate hydrolysis, indole production, lipase C14,
alpha-mannosidase, nitrate reduction, N-acetyl-beta-glucosaminidase, oxidase, trypsin, alpha-chymotrypsin, urease,
Voges-Proskauer test, acid production from: amygdalin, L-arabinose, cyclodextrin, D-arabitol, D-glucose, glycogen, D-lactose,
D-mannitol, D-mannose, melezitose, melibiose, methyl-beta-D-glucopyranoside, N-acetyl-D-glucosaminidase, raffinose, D-ribose,
sorbitol, L-sorbose and D-tagatose.
(c) Costin Stoica
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