A Gram-positive, coccus-shaped, lactic acid bacterium, strain NGRI 0510Q, was isolated from ryegrass silage produced in Okinawa Prefecture, Japan. The cell is non-spore-forming, non-motile, and occurs in pairs or tetrads. The strain is homofermentative and produces - and -lactic acid from glucose. Phylogenetic analysis based on 16S rRNA gene sequences revealed that strain NGRI 0510Q belongs to the genus and clusters within the and group, with 98.2 and 96.9 % sequence identity, respectively. DNA–DNA relatedness between strain NGRI 0510Q and JCM 8797 and JCM 5890 was 19.3 and 17.3 %, respectively. Based on its phenotypic characteristics, phylogenetic relationship and DNA–DNA relatedness, NGRI 0510Q (=JCM 15055=DSM 19927) represents the type strain of a novel species, for which the name sp. nov. is proposed.


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