Title |
Description of Flavobacterium cyclinae sp. nov. and Flavobacterium channae sp. nov., isolated from the intestines of Cyclina sinensis (Corb shell) and Channa argus (Northern snakehead) |
Author |
Seomin Kang, Jae-Yun Lee, Jeong Eun Han, Yun-Seok Jeong, Do-Hun Gim, and Jin-Woo Bae* |
Address |
Department of Biology, Department of Biomedical and Pharmaceutical Sciences, and Department of Life and Nanopharmaceutical Sciences, Kyung Hee University, Seoul 02447, Republic of Korea |
Bibliography |
Journal of Microbiology, 60(9),890-898, 2022,
|
DOI |
10.1007/s12275-022-2075-2
|
Key Words |
Flavobacterium, Flavobacterium cyclinae, Flavobacterium
channae, Cyclina sinensis, Channa argus, taxonomy,
gut microbiota |
Abstract |
Two novel bacterial strains, KSM-R2A25T and KSM-R2A30T,
were isolated from intestines of Cyclina sinensis (corb shell)
and Channa argus (northern snakehead), respectively. Both
specimens were collected in Korea. The strains were Gramstain-
negative, non-motile, and strictly aerobic. According
to phylogenetic analyses based on 16S rRNA gene sequences,
strains belonged to the genus Flavobacterium within the family
Flavobacteriaceae. 16S rRNA gene sequences of strains KSMR2A25T
and KSM-R2A30T were closely related to Flavobacterium
cucumis DSM 18830T and Flavobacterium aquaticum
JC164T with sequence similarities of 97.77% and 98.54%, respectively.
Further genomic analyses including reconstruction
of the UBCG tree and overall genome-related indices suggested
them as novel species of the genus Flavobacterium.
Both strains contained menaquinone with six isoprene units
(MK-6) as a major isoprenoid quinone and iso-C15:1 G, iso-
C15:0, and iso-C16:0 as major cellular fatty acids. The major polar
lipid in both strains was phosphatidylethanolamine. The
genomic G + C contents of strains KSM-R2A25T and KSMR2A30T
were 31.7 and 31.9%, respectively. Based on the polyphasic
taxonomic study presented here, strains KSM-R2A25T
and KSM-R2A30T represent novel species of the genus Flavobacterium,
for which the names Flavobacterium cyclinae sp.
nov and Flavobacterium channae sp. nov are proposed. The
type strains of F. cyclinae sp. nov and F. channae sp. nov
are KSM-R2A25T (= KCTC 82978T = JCM 34997T) and KSMR2A30T
(= KCTC 82979T = JCM 34998T), respectively. |