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Chryseobacterium antibioticum sp. nov. with antimicrobial activity against Gram-negative bacteria, isolated from Arctic soil

Authors
Dahal, Ram HariChaudhary, Dhiraj KumarKim, Dong-UkPandey, Ramesh PrasadKim, Jaisoo
Issue Date
Feb-2021
Publisher
SPRINGERNATURE
Citation
JOURNAL OF ANTIBIOTICS, v.74, no.2, pp 115 - 123
Pages
9
Indexed
SCIE
SCOPUS
Journal Title
JOURNAL OF ANTIBIOTICS
Volume
74
Number
2
Start Page
115
End Page
123
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/190495
DOI
10.1038/s41429-020-00367-1
ISSN
0021-8820
1881-1469
Abstract
A yellow-pigmented, non-motile, Gram-stain-negative, pleomorphic bacterium, designated RP-3-3(T) was obtained from soil sampled at the Arctic region in Cambridge Bay, NU, Canada. The strain is strictly aerobic, psychrotolerant, grow optimally at 15-20 degrees C and produces flexirubin type pigments. The strain is able to hydrolyse CM-cellulose, casein, starch and DNA. Strain RP-3-3(T) showed antimicrobial activity against Gram-negative pathogens. A phylogenetic analysis based on its 16S rRNA gene sequence revealed that strain RP-3-3(T) formed a lineage within the family Weeksellaceae and clustered as members of the genus Chryseobacterium. The closest members were Chryseobacterium shigense DSM 17126(T) (98.7% sequence similarity),Chryseobacterium carnipullorum DSM 25581(T) (98.7%) and Chryseobacterium oncorhychi701B-08(T)(98%). The genome is 4,910,468 bp long with 73 scaffolds and 4300 protein-coding genes. The anti-SMASH analysis of whole genome showed ten putative biosynthetic gene clusters responsible for various secondary metabolites. The sole respiratory quinone is MK-6. The major cellular fatty acids are iso-C-15:0, iso-C-17:1 omega 9c, iso-C(17:0)3-OH, summed feature 3 (iso-C(15 :0)2-OH/C-16 :1 omega 7c) and anteiso-C-15:0. The major polar lipid is phosphatidylethanolamine. The DNA G + C content of the type strain is 36.9 mol%. In addition, the average nucleotide identity andin silicoDNA-DNA hybridization relatedness values between strain RP-3-3(T) and phylogenetically closest members are below the threshold value for species delineation. Based on genomic, chemotaxonomic, phenotypic and phylogenetic analyses, strain RP-3-3(T) represents novel species in the genusChryseobacterium, for which the name Chryseobacterium antibioticumsp. nov. is proposed. The type strain is RP-3-3(T)(=KACC 21620(T) = NBRC 114360(T)).
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