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Int J Syst Evol Microbiol 59 (2009), 1122-1125; DOI  10.1099/ijs.0.003384-0
© 2009 International Union of Microbiological Societies

Mucilaginibacter daejeonensis sp. nov., isolated from dried rice straw

Dong-Shan An1,{dagger}, Cheng-Ri Yin2,{dagger}, Sung-Taik Lee1 and Chun-Hwi Cho3,4

1 Department of Biological Sciences, Korea Advanced Institute of Science and Technology, 373-1, Guseong-dong, Yuseong-gu, Daejeon 305-701, Republic of Korea
2 Key Laboratory of Organism Functional Factors of the Changbai Mountain, Ministry of Education, Yanbian University, Yanji 133-002, PR China
3 Korea Agriculture Fertilizer Corporation Biochemistry Research Institute, ChungBuk 373-831, Republic of Korea
4 Department of Bio-Environmental Chemistry, Chungnam National University, Daejeon 305-764, Republic of Korea

Correspondence
Chun-Hwi Cho
kafco1002{at}hanmail.net

A novel strain, designated Jip 10T, isolated from dried rice straw, was characterized by a polyphasic approach to clarify its taxonomic position. The isolate was Gram-negative, facultatively aerobic, heterotrophic, non-motile, non-spore-forming and rod-shaped. Phylogenetic analysis based on 16S rRNA gene sequences indicated that the isolate clustered with the genus Mucilaginibacter in the phylum Bacteroidetes. 16S rRNA gene sequence similarities between strain Jip 10T and the type strains of Mucilaginibacter gracilis and Mucilaginibacter paludis were 93.7 and 93.6 %, respectively. The G+C content of the genomic DNA was 48.1 mol%. Chemotaxonomic data [major menaquinone MK-7 and major fatty acids iso-C15 : 0, iso-C17 : 0 3-OH and summed feature 3 (iso-C15 : 0 2-OH and/or C16 : 1{omega}7c)] supported the affiliation of strain Jip 10T to the genus Mucilaginibacter. However, the results of physiological and biochemical tests allowed phenotypic differentiation of strain Jip 10T from other Mucilaginibacter species with validly published names. Therefore, strain Jip 10T (=KCTC 12639T =LMG 23488T) was classified in the genus Mucilaginibacter as the type strain of a novel species, for which the name Mucilaginibacter daejeonensis sp. nov. is proposed.

{dagger}These authors contributed equally to this work.

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain Jip 10T is AB267717.






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