Paenibacillus Cucumis Sp Nov., Isolated From A Cucumber Plant
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY(2016)
摘要
A Gram-positive-staining, aerobic, endospore-forming bacterial strain, isolated from the stem of a cucumber plant, was studied in detail for its taxonomic position. Based on 16S rRNA gene sequence similarity comparisons, strain AP-115(T) was grouped into the genus Paenibacillus, most closely related to Paenibacillus amylolyticus (98.8 %), Paenibacillus tundrae and Paenibacillus barcinonensis (both 98.4%). The 16S rRNA gene sequence similarity to other species of the genus Paenibacillus was <= 98.4%. Chemotaxonomic characterization supported allocation of the strain to the genus Paenibacillus. The quinone system contained exclusively menaquinone MK-7, and in the polar lipid profile diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine and phosphatidylserine were predominating. The major component in the polyamine pattern was spermidine, and the diagnostic diamino acid of the peptidoglycan was meso-diaminopimelic acid. The major fatty acids were iso- and anteiso-branched fatty acids. The results of physiological and biochemical tests allowed phenotypic differentiation of strain AP-115(T) from closely related species. Thus, AP-115(T) represents a novel species of the genus Paenibacillus, for which the name Paenibacillus cucumis sp. nov. is proposed, with AP-115(T) (=LMG 29222(T)=CCM 8653(T)) as the type strain.
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关键词
Paenibacillus,cucumis,endophyte,plant-associated,taxonomy
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