Paenibacillus shunpengii sp. nov., isolated from farmland soil

A bacterial strain designated YYJ7-1^T was isolated from farmland soil in China and characterized using a polyphasic taxonomic approach. Cells of strain YYJ7-1^T were Gram-staining-positive, aerobic or facultatively anaerobic, rod-shaped, motile and endospore-forming. Growth occurred at 18-42 °C (optimum at 35 °C), at pH 6.0-8.0 (optimum at pH 7.5) and with 0.0-4.0 % NaCl (optimum with 0.5 %). Phylogenetic analysis based on 16S rRNA gene sequences showed that the strain belonged to the genus Paenibacillus and showed high levels of sequence similarity with respect to Paenibacillus provencensis 4401170^T (98.6 %) and Paenibacillus urinalis 5402403^T (98.4 %), while lower 16S rRNA gene sequence similarities were observed with all other type strains (97.0 %). However, strain YYJ7-1^T showed low DNA-DNA relatedness with P. provencensis 4401170^T 48.7±4.5 % (43.6±7.1 % in a reciprocal experiment), and P. urinalis 5402403^T 38.9±5.7 % (35.6±6.8 %). The major cellular fatty acids (>10.0 %) of strain YYJ7-1^T were anteiso-C15 : 0, iso-C16 : 0 and anteiso-C17 : 0. The polar lipid profile consisted of phospholipids, diphosphatidylglycerol, phosphatidylglycerol and phosphatidylethanolamine. The major isoprenoid quinone was MK-7. The DNA G+C content was 39.4 mol%. Based on these results, it is concluded that strain YYJ7-1^T represents a novel species of the genus Paenibacillus, for which the name Paenibacillus shunpengii sp. nov. is proposed, with YYJ7-1^T (=ACCC 19965^T=KCTC 33849^T) as the type strain.