A Gram-stain-negative, rod-shaped and aerobic bacterium, designated K20C18050901T, was isolated from forest soil collected on 11 September 2017 from Dinghushan Biosphere Reserve, Guangdong Province, PR China (23° 10' 24'' N; 112° 32' 10'' E). Phylogenetic analysis based on 16S rRNA gene sequences revealed that strain K20C18050901T belongs to the genus Chitinophaga, and showed the highest similarities to Chitinophaga sancti NBRC 15057T (98.6 %) and Chitinophaga oryziterrae JCM 16595T (96.9 %). The major fatty acids (>10 %) were iso-C15 : 0, C16 : 1ω5c, summed feature 3 (C16 : 1ω6c and/or C16 : 1ω7c) and iso-C17 : 0 3-OH. The predominant respiratory quinone was menaquinone-7. The major polar lipid was phosphatidylethanolamine. The draft genome size of strain K20C18050901T was 8.36 Mb with a DNA G+C content of 44.7 mol%. The digital DNA-DNA hybridization and average nucleotide identity values between strain K20C18050901T and C. sancti NBRC 15057T were 31.40 and 85.82 %, respectively. On the basis of phenotypic, genotypic and phylogenetic analysis, strain K20C18050901T represents a novel species of the genus Chitinophaga, for which the name Chitinophagasilvisoli sp. nov. is proposed. The type strain is K20C18050901T (=GDMCC 1.1411T=KCTC 62860T).
Keywords: Bacteroidetes; Chitinophaga; phylogenetic tree.