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Paenibacillus woosongensis sp. nov., a xylanolytic bacterium isolated from forest soil

¹ Korea Research Institute of Bioscience and Biotechnology, 52 Oeun-dong, Yusong-gu, Daejeon 305-333, Republic of Korea
² School of Food Science and Biotechnology, Woosong University,17-2, Jayang-dong, Dong-gu Daejeon 300-718, Republic of Korea

Correspondence
Ki-Hong Yoon
ykh{at}lion.woosong.ac.kr

A novel xylan-degrading bacterium, YB-45^T, was isolated from forest soil. The organism is a facultatively anaerobic, Gram-variable, motile, endospore-forming, rod-shaped bacterium. It grew optimally at 37 °C and pH 7.5 in the presence of 3 % (w/v) NaCl. The predominant cellular fatty acids were anteiso-C_{15 : 0}, iso-C_{15 : 0} and C_{16 : 0}. The DNA G+C content was 51.7 mol% and the predominant menaquinone was MK-7. Growth was observed with many carbohydrates, including xylan, as sole carbon sources. Strain YB-45^T produces a wide variety of hydrolytic enzymes, such as xylanase, cellulase, amylase, β-mannanase, β-mannosidase, β-xylosidase, -galactosidase, β-galactosidase and β-glucosidase. Phylogenetic analyses based on 16S rRNA gene sequences showed that strain YB-45^T belongs to the genus Paenibacillus, sharing sequence similarity that was <96 %. It was related most closely to Paenibacillus jamilae DSM 13815^T, with 95.7 % sequence similarity. On the basis of morphological, chemotaxonomic, physiological and phylogenetic properties, strain YB-45^T represents a novel species of the genus Paenibacillus, for which the name Paenibacillus woosongensis sp. nov. is proposed. The type strain is YB-45^T (=KCTC 3953^T=DSM 16971^T).