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A report of 9 unrecorded radiation resistant bacterial species in Korea

Journal of Species Research / Journal of Species Research, (E)2713-8615
2017, v.6 no.2, pp.91-100
Myung-Suk Kang
Srinivasan Sathiyaraj

Abstract

Five bacterial strains, ES10-3-3-1, KKM10-2-2-1, Ant11, JM10-4-1-3, and KMS4-11 assigned to the genus Deinococcus were isolated from soil samples collected from Namyangju-si in Gyeonggi-do, Gangnam-gu and Dongdaemun-gu in Seoul, Korea. In addition, four bacterial strains, KKM10-2-7-2, JM10-2-5, JM10-2-6-2, and KKM10-2-3 assigned to the genus Hymenobacter were isolated from soil samples collected from Gangnam-gu and Dongdaemun-gu in Seoul, in South Korea. The five Deinococcus species were Gram-stain positive, pink-pigmented, and short-rod or coccus shaped. The four Hymenobacter species were Gram-stain negative, red-pigmented, and short-rod shaped. Phylogenetic analysis based on 16S rRNA gene sequences revealed that strains ES10-3-3-1, KKM10-2-2-1, Ant11, JM10-4-1-3, and KMS4-11 were most closely related to Deinococcus citri NCCP-154T (with 99.8% similarity), Deinococcus grandis DSM 12784T (99.0%), Deinococcus marmoris DSM 12784T (98.8%), Deinococcus claudionis PO-04-19-125T (98.7%), and Deinococcus radioresistens 8AT (99.8%), respectively. KKM10-2-7-2, JM10-2-5, JM10-2-6-2, and KKM10-2-3 were most closely related to Hymenobacter algoricola VUG-A23aT (99.1% similarity), Hymenobacter elongatus VUG-A112T (99.1% similarity), Hymenobacter gelipurpurascens Txg1T (99.1% similarity), and Hymenobacter psychrotolerans Tibet-IIU11T (99.3% similarity), respectively. These nine species have never been reported in Korea; thus, five Deinococcus species are reported in the family Deinococcaceae, order Deinococcales, class Deinococci, phylum Deinococcus-Thermus and four Hymenobacter species are reported in the family Cytophagaceae, order Cytophagales, class Cytophagia, phylum Bacteroidetes.

keywords
16S rRNA gene, Bacteroidetes, Deinococcus, Deinococcaceae, Deinococcus-Thermus, Hymenobacter, unrecorded species in Korea

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Journal of Species Research