Description of 41 unrecorded bacterial species in Korea, isolated from freshwater in 2021

Here we describe indigenous prokaryotic species in Korea, a total of 41 bacterial strains were isolated from freshwater from the Republic of Korea. From the high 16S rRNA gene sequence similarity (>98.7%) and formation of a robust phylogenetic clade with the closest species, it was determined that each strain belonged to predefined bacterial species. There is no official report that these 41 species belonged to 5 phyla, 10 classes, 18 orders, 23 families, and 29 genera, which were assigned to Streptomyces, Mycolicibacterium, Smaragdicoccus, Nocardiopsis, and Nocardia of the phylum Actinobacteria; Runella, Flavobacterium, Algoriphagus, Sphingobacterium, and Aequorivita of the phylum Bacteroidota; Paenibacillus, Bacillus, Metabacillus, and Fredinandcohnia of the phylum Firmicutes; Sphingobium, Erythrobacter, Duganella, Methylopila, Novosphingobium, Azospirillum, Simplicispira, Corallococcus, Pseudomonas, Devosia, Pseudorhodoferax, Pseudomonas, Prolinoborus, Pectobacterium, and Aquabacterium of the phylum Proteobacteria; Proshecobacter of the phylum Verrucomicrobia. Gram reaction, colony and cell morphology, basic biochemical characteristics, isolation source, and strain IDs are also described in the species description section.