| Lactococcus laudensis |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Bacillota (Firmicutes), Class Bacilli, Order Lactobacillales, Family Streptococcaceae, Genus Lactococcus, Lactococcus
laudensis Meucci et al. 2015.
Species description is based on a single isolate.
laudensis Meucci et al. 2015.
Species description is based on a single isolate.
Gram-positive coccoid cells, 1.05 μm in diameter, occuring as single cells, pairs or
chains. Non-motie. Endospores are not formed.
chains. Non-motie. Endospores are not formed.
Grows well anaerobically on M17 agar at 30 ºC. Grows at 10 ºC, but not at 44 ºC. weak
alpha-haemolysis on blood sheep agar is produced. Grows in 3% NaCl (weakly in
4% NaCl) and at pH 5.0 (not at pH 4). Facultatively anaerobic.
alpha-haemolysis on blood sheep agar is produced. Grows in 3% NaCl (weakly in
4% NaCl) and at pH 5.0 (not at pH 4). Facultatively anaerobic.
Isolated from cow milk collected from a bovine herd in Valle Trompia, Italy. Susceptible to ampicillin, chroramphenicol, gentamicin,
kanamycin, streptomycin, erythromycin, clindamycin, tetracycline and vancomycin.
kanamycin, streptomycin, erythromycin, clindamycin, tetracycline and vancomycin.
Undetermined.
- Meucci A, Zago M, Rossetti L, Fornasari ME, Bonvini B, Tidona F, Povolo M, Contarini G, Carminati D, Giraffa G. Lactococcus
hircilactis sp. nov. and Lactococcus laudensis sp. nov., isolated from milk. Int J Syst Evol Microbiol 2015; 65:2091-2096. - Yuki M, Sakamoto M, Nishimura Y, Ohkuma M. Lactococcus reticulitermitis sp. nov., isolated from the gut of the subterranean
termite Reticulitermes speratus. Int J Syst Evol Microbiol 2018; 68:596-601. - Hilgarth M, Werum V, Vogel RF. Lactococcus carnosus sp. nov. and Lactococcus paracarnosus sp. nov., two novel species
isolated from modified-atmosphere packaged beef steaks. Int J Syst Evol Microbiol 2020; 70:5832-5840. - Noda S, Koyama F, Aihara C, Ikeyama N, Yuki M, Ohkuma M, Sakamoto M. Lactococcus insecticola sp. nov. and Lactococcus
hodotermopsidis sp. nov., isolated from the gut of the wood-feeding lower termite Hodotermopsis sjostedti. Int J Syst Evol Microbiol
2020; 70:4515-4522.
Slow milk acidification. Ammonia is produced from arginine.
Positive results for acid phosphatase, chymotrypsin, aesculin hydrolysis, alpha-glucosidase, leucine aminopeptidase, valine
arylamidase, acid production from: amygdalin, fructose, glucose, galactose, glycogen, lactose, maltose, mannose, mannitol, salicin,
sucrose, beta-gentiobiose and D-xylose.
Can oxidize: D- and L-arabinose, D-mannose, D-xylose, D-ribose, D-fructose, L-lyxose, beta-cyclodextrin, 2-deoxy-D-ribose,
D-glucosamine, 5-keto-D-gluconic acid and dihydroxyacetone.
Negative results for alkaline phosphatase, catalase, esterase-lipase, alpha- and beta-galactosidase, beta-glucuronidase, oxidase,
acid production from: L-arabinose, arbutin, glycerol, inulin, melezitose, melibiose, raffinose, turanose, ribose, starch, sorbitol and
trehalose.
Positive results for acid phosphatase, chymotrypsin, aesculin hydrolysis, alpha-glucosidase, leucine aminopeptidase, valine
arylamidase, acid production from: amygdalin, fructose, glucose, galactose, glycogen, lactose, maltose, mannose, mannitol, salicin,
sucrose, beta-gentiobiose and D-xylose.
Can oxidize: D- and L-arabinose, D-mannose, D-xylose, D-ribose, D-fructose, L-lyxose, beta-cyclodextrin, 2-deoxy-D-ribose,
D-glucosamine, 5-keto-D-gluconic acid and dihydroxyacetone.
Negative results for alkaline phosphatase, catalase, esterase-lipase, alpha- and beta-galactosidase, beta-glucuronidase, oxidase,
acid production from: L-arabinose, arbutin, glycerol, inulin, melezitose, melibiose, raffinose, turanose, ribose, starch, sorbitol and
trehalose.
(c) Costin Stoica
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