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Rudaea cellulosilytica gen. nov., sp. nov., isolated from soil

¹ Mushroom Research Division, National Institute of Horticultural and Medicinal Crop, Rural Development Administration (RDA), Suwon 441-707, Republic of Korea
² Korean Agricultural Culture Collection (KACC), National Agrobiodiversity Center, RDA, Suwon 441-707, Republic of Korea
³ Organic Agriculture Division, National Academy of Agricultural Science, RDA, Suwon 441-707, Republic of Korea

Correspondence
Soon-Wo Kwon
swkwon{at}rda.go.kr

A yellow-pigmented, Gram-negative, aerobic, rod-shaped bacterium, strain KIS3-4^T, was isolated from soil collected on Daechung Island in the West Sea of Korea. Phylogenetic analysis based on the 16S rRNA gene sequence placed strain KIS3-4^T in a distinct lineage in the family Xanthomonadaceae. Strain KIS3-4^T shared 87.3–93.7 % sequence similarity with members of the family Xanthomonadaceae, and was related most closely to the genera Dyella and Dokdonella. In its biochemical characteristics, strain KIS3-4^T was clearly separable from other genera within the family Xanthomonadaceae on the basis of the hydrolysis of cellulose and urea, high G+C content (64 mol%) and fatty acid profile. Major fatty acids (>10 % of the total fatty acids) were iso-C_{17 : 1}9c (32.8 %), iso-C_{17 : 0} (18.0 %) and iso-C_{16 : 0} (12.7 %). Q-8 was the predominant respiratory quinone. Phosphatidylethanolamine and several unidentified aminophospholipids and phospholipids were present. Based on its unique phenotypic, genotypic and phylogenetic features, strain KIS3-4^T represents a novel genus and species, for which the name Rudaea cellulosilytica gen. nov., sp. nov. is proposed. The type strain of Rudaea cellulosilytica is KIS3-4^T (=KACC 12734^T =JCM 15422^T).

Images of cells of strain KIS3-4^T and fatty acid composition by 2-D TLC and a table of fatty acid comparisons are available as supplementary material with the online version of this paper.