Journal
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
Volume 65, Issue -, Pages 2091-2096Publisher
SOC GENERAL MICROBIOLOGY
DOI: 10.1099/ijs.0.000225
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Two strains of lactic acid bacteria, designated 117(T) and 4195(T), were isolated from goat milk in Valtellina, Italy and from cow milk in Valle Trompia, Italy, respectively, and characterized taxonomically by a polyphasic approach. The strains were Gram-stain-positive, coccoid, non-spore-forming and catalase-negative bacteria Morphological, physiological and phylogenetic data indicated that these isolates belonged to the genus Lactococcus. Strain 117(T) was closely related to Lactococcus fujiensis, Lactococcus lactis subsp. lactis, L. lactis subsp. cremoris, L. lactis subsp. hordniae, L. lactis subsp. tructae and Lactococcus taiwanensis, showing 93-94% and 82-89% 16S rRNA and rpoB gene sequence similarities, respectively. Strain 4195(T) was closely related to Lactococcus chungangensis, Lactococcus raffinolactis, Lactococcus plantarum and Lactococcus piscium, showing 92-98% and 86-99% 16S rRNA and rpoB gene sequence similarities, respectively. Based on this evidence and the data obtained in the present study, the milk isolates represent two novel species of the genus Lactococcus, for which the names Lactococcus hircilactis sp. nov., and Lactococcus laudensis sp. nov. are proposed. The respective type strains are 117(T) (=LMG 28352(T)=DSM 28960(T)) and 4195(T) (=LMG 28353(T)=DSM 28961(T)).
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