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E-ISSN : 2713-8615

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Vol.7 No.3

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A report of 22 unrecorded bacterial species in Korea, isolated from the North Han River basin in 2017

Journal of Species Research / Journal of Species Research, (E)2713-8615
2018, v.7 no.3, pp.193-201
https://doi.org/10.12651/JSR.2018.7.3.193
정요찬 (인하대학교)
조장천 (인하대학교)
장혜진 (인하대학교)
정일석 (인하대학교)
박미리 (인하대학교)
정요찬, 조장천, 장혜진, 정일석, & 박미리. (2018). . Journal of Species Research, 7(3), 193-201, https://doi.org/10.12651/JSR.2018.7.3.193

Abstract

Culturable bacterial diversity was investigated using freshwater and sediment samples collected from the North Han River basin in 2017, as a part of the research program ‘Survey of freshwater organisms and specimen collection’. Over a thousand bacterial strains were isolated from the samples and identified based on 16S rRNA gene sequences. Among the bacterial isolates, 22 strains showing higher than 98.7% sequence similarity with validly published bacterial species, but not reported in Korea, were classified as unrecorded species in Korea. The 22 bacterial strains were phylogenetically diverse and assigned to 6 classes, 11 orders, 15 families, and 21 different genera. At the generic level, the unreported species were affiliated with Flavobacterium of the class Flavobacteria, Flexibacter of the class Cytophagia, Blastomonas, Brevundimonas, Elstera, Rhizobium, Roseomonas, Sphingomonas, and Xanthobacter of the class Alphaproteobacteria, Albidiferax, Cupriavidus, Curvibacter, Ferribacterium, Hydrogenophaga, Iodobacter, Limnohabitans, Polaromonas, Undibacterium, and Variovorax of the class Betaproteobacteria, Pseudomonas of the class Gammaproteobacteria, and Arcobacter of the class Epsilonproteobacteria. The unreported bacterial species were further characterized by examining Gram reaction, colonial and cellular morphology, and biochemical properties. The detailed descriptions of 22 strains of the unreported bacterial species are also provided.

keywords
North Han River, unrecorded bacterial species, freshwater, 16S rRNA

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Journal of Species Research

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