Cellulomonas xylanilytica sp. nov., a cellulolytic and xylanolytic bacterium isolated from a decayed elm tree

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Abstract
A Gram-positive, aerobic, non-motile bacterium was isolated from a decayed elm tree. Phylogenetic analysis based on 16S rDNA sequences revealed 99·0 % similarity toCellulomonas humilata. Chemotaxonomic data that were determined for this isolate included cell-wall composition, fatty acid profiles and polar lipids; the results supported the placement of strain XIL11Tin the genusCellulomonas. The DNA G+C content was 73 mol%. The results of DNA–DNA hybridization withC. humilataATCC 25174T, in combination with chemotaxonomic and physiological data, demonstrated that isolate XIL11Tshould be classified as a novelCellulomonasspecies. The nameCellulomonas xylanilyticasp. nov. is proposed, with strain XIL11T(=LMG 21723T=CECT 5729T) as the type strain.