Report of 21 unrecorded bacterial species in Korea belonging to Betaproteobacteria and Epsilonproteobacteria Author Kim, Min-Kyeong Department of Microbiology and Molecular Biology, Chungnam National University, Daejeon 34134, Republic of Korea Author Seong, Chi-Nam Department of Biology, Sunchon National University, Suncheon 57922, Republic of Korea Author Jahng, Kwangyeop Department of Biological Sciences, Chonbuk National Universty, Jeonju 54896, Republic of Korea Author Cha, Chang-Jun Department of Biotechnology, Chung-Ang University, Anseong 17546, Republic of Korea Author Joh, Ki-seong Department of Biotechnology, Hankuk University of Foreign Studies, Yongin 17035, Republic of Korea Author Bae, Jin-Woo Department of Biology, Kyung Hee University, Seoul 02447, Republic of Korea Author Cho, Jang-Cheon Department of Biological Sciences, Inha University, Incheon 22212, Republic of Korea Author Kim, Wan-Taek Im and Seung-Bum text Journal of Species Research 2017 6 1 15 24 journal article 10.12651/JSR.2017.6.1.015 2713-8615 12753540 Description of Sphaerotilus natans subsp. natans HMF2472 Cells are Gram negative and rod shaped. Grows on R 2A at 25°C. Colonies are beige colored, and filamentous, flat and wooly. Diffusible pigment is not produced. Based on API20NE, cytochrome oxidase, urease, β-glucosidase, protease and β-galactosidase activities are positive, but nitrate reduction, indole production, glucose fermentation and arginine dihydrolase activities are negative. D-Glucose, L-arabinose, D-mannose and N ­acetyl­glucosamine are assimilated, but not D­mannitol, Dmaltose, potassium gluconate, capric acid, adipic acid, malic acid, trisodium citrate and phenylacetic acid. Strain HMF2472 ( = NIBRBA 0000114996) was isolated from freshwater. The 16S rRNA gene sequence accession number is KP099955.