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Paenibacillus gansuensis sp. nov., isolated from desert soil of Gansu Province in China

¹ Korea Research Institute of Bioscience and Biotechnology, 52 Oeundong, Yusong, Daejeon 305-333, Republic of Korea
² Division of Applied Life Science, EB-NCRC, PMBBRC, Gyeongsang National University, 660-701, Republic of Korea
³ Yunnan Institute of Microbiology, Yunnan University, Kunming, Yunnan, 650091, People's Republic of China

Correspondence
Chang-Jin Kim
changjin{at}kribb.re.kr

A Gram-positive, endospore-forming, rod-shaped bacterium, designated strain B518^T, was isolated from a desert-soil sample from Gansu Province in China. The isolate was strictly aerobic and was motile by means of several flagella. The strain grew optimally at 35–40 °C and at pH 7.0–7.5. The predominant fatty acids of strain B518^T were anteiso-C_{15 : 0}, C_{16 : 0}, anteiso-C_{17 : 0}, iso-C_{16 : 0} and iso-C_{15 : 0}. The G+C content of the genomic DNA was 50 mol% and the predominant quinone was MK-7. Comparative 16S rRNA gene sequence analyses showed that strain B518^T formed a distinct phyletic line within the genus Paenibacillus and was most closely related to Paenibacillus chitinolyticus IFO 15660^T, with a 16S rRNA gene sequence similarity of 95.8 %. The levels of 16S rRNA gene sequence similarity with respect to other type strains of Paenibacillus species were below 95.1 %. On the basis of the chemotaxonomic data and molecular properties, strain B518^T represents a novel species within the genus Paenibacillus, for which the name Paenibacillus gansuensis sp. nov. is proposed. The type strain is B518^T (=KCTC 3950^T=DSM 16968^T).

Transmission electron micrographs showing the morphology, cell wall and spore structures of strain B518^T, and a neighbour-joining phylogenetic tree for strain B518^T and related taxa are available as supplementary figures in IJSEM Online.

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