RRC ID 80631
Author Saticioglu IB, Ay H, Altun S, Duman M.
Title Genomic insight into Chryseobacterium turcicum sp. nov. and Chryseobacterium muglaense sp. nov. isolated from farmed rainbow trout in Turkey.
Journal Syst Appl Microbiol
Abstract Four strains, designated as C-2, C-17T, C-39T and Ch-15, were isolated from farmed rainbow trout samples showing clinical signs during an investigation for a fish-health screening study. The pairwise 16S rRNA gene sequence analysis showed that strain C-17T shared the highest identity level of 98.1 % with the type strain of Chryseobacterium piscium LMG 23089T while strains C-2, C-39T and Ch-15 were closely related to Chryseobacterium balustinum DSM 16775T with an identity level of 99.3 %. A polyphasic approach involving phenotypic, chemotaxonomic and genome-based analyses was employed to determine the taxonomic provenance of the strains. The overall genome relatedness indices including dDDH and ANI analyses confirmed that strains C-2, C-17T, C-39T and Ch-15 formed two novel species within the genus Chryseobacterium. Chemotaxonomic analyses showed that strains C-17T and C-39T have typical characteristics of the genus Chryseobacterium by having phosphatidylethanolamine in their polar lipid profile, MK-6 as only isoprenoid quinone and the presence of iso-C15:0 as major fatty acid. The genome size and G + C content of the strains ranged between 4.4 and 5.0 Mb and 33.5 - 33.6 %, respectively. Comprehensive genome analyses revealed that the strains have antimicrobial resistance genes, prophages and horizontally acquired genes in addition to secondary metabolite-coding gene clusters. In conclusion, based on the polyphasic analyses conducted on the present study, strains C-17T and C-39T are representatives of two novel species within the genus Chryseobacterium, for which the names Chryseobacterium turcicum sp. nov. and Chryseobacterium muglaense sp. nov. with the type strains C-17T (=JCM 34190T = KCTC 82250T) and C-39T (=JCM 34191T = KCTC 822251T), respectively, are proposed.
Volume 46(1)
Pages 126385
Published 2023-1-1
DOI 10.1016/j.syapm.2022.126385
PII S0723-2020(22)00092-3
PMID 36410095
MeSH Animals Bacterial Typing Techniques Chryseobacterium* / genetics DNA, Bacterial / genetics Fatty Acids / analysis Genomics Nucleic Acid Hybridization Oncorhynchus mykiss* / microbiology Phylogeny RNA, Ribosomal, 16S / genetics Sequence Analysis, DNA Turkey
General Microbes JCM 34190 JCM 34191