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Pseudomonas helmanticensis sp. nov., isolated from a forest soil

AutorRamírez Bahena, M. Helena ; Cuesta Sánchez, M. José ; Flores Félix, José David; Mulas, Rebeca; Rivas, Raúl ; Castro Pinto, João; Brañas, Javier; Mulas, Daniel; González Andrés, Fernando; Velázquez, Encarna ; Peix, Álvaro
Palabras clavePseudomonas
Forest soil
Phosphate solubilizing bacteria
Fecha de publicación2014
EditorMicrobiology Society
CitaciónInternational Journal of Systematic and Evolutionary Microbiology 64(7): 2338-2345 (2014)
ResumenA bacterial strain named OHA11T was isolated in the course of a study of phosphate solubilizing bacteria occurring in a forest soil from Salamanca, Spain. The 16S rRNA gene sequence had 99.1% identity with respect to the closest relative Pseudomonas baetica a390T, and the following closest related species with 98.9 % similarity were P. jessenii, P. moorei, P. umsongensis, P. mohnii and P. koreensis, for which OHA11T was classified within genus Pseudomonas. The analysis of housekeeping genes rpoB, rpoD and gyrB confirmed its phylogenetic affiliation and showed identities lower than 95% in almost all cases with respect to the mentioned closest relatives. The strain has two polar flagella. The respiratory quinone is Q9. The major fatty acids are 16:0, 18:1 ω7c and 16:1 ω7c/ 15:0 iso 2OH in summed feature 3. The strain is oxidase, catalase and urease positive, the arginine dihydrolase system is present but nitrate reduction, β–galactosidase production and esculine hydrolysis are negative. It can grow at 31ºC and at pH 11. The DNA G+C content was 58.1 mol %. DNA-DNA hybridization results showed values lower than 49% relatedness with respect to the type strains of the seven closest related species. Therefore, the combined results of genotypic, phenotypic and chemotaxonomic data support the classification of strain OHA11 into a novel species of Pseudomonas, for which the name P. helmanticensis sp. nov. is proposed. The type strain is OHA11T (=LMG 28168T, CECT 8548T).
Descripción18 páginas, 2 figuras, 2 tablas. – The definitive versión is available at http://ijs.microbiologyresearch.org/content/journal/ijsem/10.1099/ijs.0.063560-0 -- MHRB is recipient of a JAE-Doc researcher contract from CSIC cofinanced by ERDF. MJC, JDFF and RM are recipients of contracts supported by this project
Versión del editorhttp://dx.doi.org/10.1099/ijs.0.063560-0
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