Spodiobacter cordis gen. nov. sp. nov., a member of the family Flavobacteriaceae isolated from patients with infective endocarditis.

Microbiology and Immunology
Junko TomidaYoshiaki Kawamura

Abstract

Two gram-negative, catalase-negative, oxidase-positive strains (PAGU 1467T and PAGU 1468) isolated from patients with infective endocarditis were investigated to determine their taxonomic status. 16S rRNA gene sequence analysis indicated that the two strains were members of the Bergeyella-Chryseobacterium-Riemerella branch of the family Flavobacteriaceae. Strains PAGU 1467T and PAGU 1468 were highly related to each other (98.8% 16S rRNA gene sequence similarity). Phylogenetically closely-related species to PAGU 1467T comprised Bergeyella zoohelcum (95.0% 16S rRNA gene sequence similarity), Riemerella anatipestifer (94.3%) and Cloacibacterium normanense (94.3%). The major fatty acids of the two isolates were iso-C15:0 , iso-C17:0 3-OH and iso-C15:0 3-OH. The presence of C16:0 3-OH and iso-C15:0 2-OH allowed these isolates to be distinguished from B. zoohelcum. Menaquinone MK-6 was the only respiratory quinone in these organisms; this is a consistent characteristic of the family Flavobacteriaceae. The guanine-plus-cytosine content of the genomic DNA was 42.0%, which is higher than that of other close phylogenetic relatives. On the basis of their phenotypic properties and genetic distinctiveness, isolates PAGU 1467T and PAGU 1468 ...Continue Reading

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Citations

May 22, 2020·Frontiers in Microbiology·Xuewei WangYuan Fan

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