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Lactococcus reticulitermitis sp. nov., isolated from the gut of the subterranean termite Reticulitermes speratus.

Yuki, Masahiro; Sakamoto, Mitsuo; Nishimura, Yuki; Ohkuma, Moriya.
Int J Syst Evol Microbiol; 68(2): 596-601, 2018 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-29300157
Strain Rs-Y01T was isolated from the gut of the wood-feeding subterranean termite Reticulitermes speratus. Phylogenetic analysis based on 16S rRNA gene sequence indicated that the strain Rs-Y01T belonged to the genus Lactococcus and was most closely related to Lactococcus raffinolactis JCM 5706T with 98.1 % similarity in the 16S rRNA gene, followed by Lactococcus piscium JCM 16647T (97.2 %). Genomic comparisons of strain Rs-Y01T with L. raffinolactis JCM 5706Twere made using the Genome-to-Genome Distance Calculator and average nucleotide identity analysis (values indicated 29.2 and 84.6 %, respectively). Strain Rs-Y01T was a Gram-stain-positive, facultatively anaerobic, non-motile coco-bacilli and formed l-lactic acid. The sugar fermentation and enzyme reactions of strain Rs-Y01T differed from those of other species of the genus Lactococcus. The major cellular fatty acids were summed feature 8 (C18  1ω7c/C18  1ω6c; 32.0 %), C16  0 (29.7 %) and C14  0 (18.1 %). Based on these characteristics, strain Rs-Y01T represents a novel species of the genus Lactococcus, for which the name Lactococcusreticulitermitis sp. nov. is proposed. The type strain is Rs-Y01T (=JCM 32106T=DSM 105715T).
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