Abstract
A Gram-stain-positive, facultatively anaerobic, endospore-forming, irregular rod-shaped bacterium, designated DB13260T, was isolated from tropical rainforest soil in Jianfengling Nature Reserve in Hainan, China. The isolate was found to grow with 0-4 % (w/v) NaCl, at 5-40 °C and pH 6.0-10.5, with an optimum of 0 % NaCl, 30-37 °C and pH 8.5-9.0, respectively. The predominant isoprenoid quinone was menaquinone 7 (MK-7), and the major fatty acids were anteiso-C15 : 0, iso-C16 : 0 and C16 : 0. The G+C content of the genomic DNA was 53.7 mol%. Analysis of the 16S rRNA gene sequence of strain DB13260T showed an affiliation of the strain with the genus Paenibacillus, sharing 98.3 % and 97.8 % 16S rRNA gene sequence similarities with the closest relatives Paenibacillus anaericanus MH21T and Paenibacillus selenii W126T, respectively. The DNA-DNA hybridization values between strain DB13260T and the two type strains were 60.4 % and 42.6 %, respectively. The combined phenotypic and DNA-DNA hybridization data supported the conclusion that strain DB13260T represents a novel species of the genus Paenibacillus, for which the name Paenibacillussegetis sp. nov. is proposed. The type strain is DB13260T (=CGMCC 1.12769T=DSM 28014T).
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