1887

Abstract

A Gram-stain-positive, aerobic, rod-shaped, endospore-forming bacterium, designated strain M4BSY-1, was originally isolated from a surface-sterilized leaf of Paeonia lactiflora Pall. in Guizhou, China. The bacterium was characterized by a polyphasic approach to determine its taxonomic position. 16S rRNA gene sequence comparison revealed that strain M4BSY-1 belongs to the genus Paenibacillus and most closely to Paenibacillus pinioli NB5 (98.31 % similarity). Neither substrate nor aerial mycelia formed, and no diffusible pigments were observed on the media tested. Strain M4BSY-1 grew in the pH range 7.0–13.0 (optimum, 7.0–8.0), at temperatures between 10–37 °C (optimum, 30 °C) and at 0–5 % (w/v) NaCl (optimum, 1–2 %). The predominant menaquinone was MK-7. The major fatty acids were anteiso-C15 : 0, C16 : 0 and iso-C16 : 0. The polar lipids comprised diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine, two unidentified unknown aminophospholipids and three unidentified phospholipids. The DNA G+C content was 48.8 mol%. According to the phylogenetic, phenotypic and chemotaxonomic evidence, strain M4BSY-1 was clearly distinguishable from other species with validly published names in the genus Paenibacillus and should therefore be classified as a novel species, and we suggest the name Paenibacillus paeoniae sp. nov. The type strain is M4BSY-1 (=KCTC 33997=CGMCC 1.13667).

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2018-09-25
2019-08-18
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