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A bacterial strain designated PALXIL08T was isolated from the phyllosphere of Phoenix dactylifera bracts. A phylogenetic analysis based on the 16S rRNA gene sequence placed the isolate within the genus Paenibacillus in the same subgroup as Paenibacillus kobensis and Paenibacillus curdlanolyticus (98.9 and 97.9 % sequence similarity, respectively). The DNA hybridization values between the isolate and the type strains of Paenibacillus kobensis and Paenibacillus curdlanolyticus were found to be 27.4 and 17.6 %, respectively. The isolate comprised Gram-variable, facultatively anaerobic, motile, sporulating rods. Catalase and oxidase were produced and cellulose, xylan, starch and aesculin were hydrolysed. Many carbohydrates served as carbon sources for growth. MK-7 was the predominant menaquinone, and anteiso-C15 : 0 and iso-C16 : 0 were the major fatty acids. The DNA G+C content was 51 mol%. DNA relatedness data and the results of phylogenetic and phenotypic analyses showed that strain PALXIL08T should be considered as the type strain of a novel species of the genus Paenibacillus, for which the name Paenibacillus cellulosilyticus sp. nov. is proposed. The type strain is PALXIL08T (=LMG 22232T=CECT 5696T).
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