Spiribacter aquaticus sp. nov., a novel member of the genus Spiribacter isolated from a saltern
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Título: | Spiribacter aquaticus sp. nov., a novel member of the genus Spiribacter isolated from a saltern |
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Autor/es: | León, María José | Aldeguer-Riquelme, Borja | Anton, Josefa | Sánchez-Porro, Cristina | Ventosa, Antonio |
Grupo/s de investigación o GITE: | Ecología Microbiana Molecular |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Fisiología, Genética y Microbiología |
Palabras clave: | Hypersaline habitats | Extremophiles | Spiribacter | Saltern | Halophilic bacteria |
Área/s de conocimiento: | Microbiología |
Fecha de publicación: | 18-ago-2017 |
Editor: | Microbiology Society |
Cita bibliográfica: | International Journal of Systematic and Evolutionary Microbiology. 2017, 67: 2947-2952. doi:10.1099/ijsem.0.002053 |
Resumen: | A moderately halophilic bacterium, designated strain SP30T, was isolated from a solar saltern located in Santa Pola, Alicante, on the East coast of Spain. It was a Gram-stain-negative, strictly aerobic bacterium, able to grow in 7.5–25 % (w/v) NaCl and optimally in 12.5 % (w/v) NaCl. Phylogenetic analyses, based on 16S rRNA gene sequences, showed that the novel isolate is a member of the genus Spiribacter , with the most closely related species being Spiribacter roseus SSL50T (99.9 % sequence similarity) and Spiribacter curvatus UAH-SP71T (99.4 % sequence similarity). The 16S rRNA gene sequence similarity with the type species Spiribacter salinus M19-40T was 96.6 %. The DNA–DNA relatedness value between strain SP30T and S. roseus SSL50T and S. curvatus UAH-SP71T was 40 and 55 %, respectively; these values are lower than the 70 % threshold accepted for species delineation. The major fatty acids were C16:0, C18 : 1ω7c, C19 : 0 cyclo ω8c and C12 : 0. Similarly to other species of the genus Spiribacter , strain SP30Twas observed as curved rods and spiral cells. Metabolic versatility was reduced to the utilization of a few organic compounds as the sole carbon and energy sources, as with other members of Spiribacter. However, it differed in terms of colony pigmentation (brownish-yellow instead of pink) and in having a higher growth rate. Based on these data and on the phenotypic, genotypic and chemotaxonomic characterization, we propose the classification of strain SP30T as a novel species within the genus Spiribacter , with the name Spiribacter aquaticus sp. nov. The type strain is SP30T (=CECT 9238T=LMG 30005T). |
Patrocinador/es: | This work was supported by grants CGL2013-46941-P and CGL2015-66686-C3-3-P from the Spanish Ministerio de Economía y Competitividad, with European funds (FEDER). |
URI: | http://hdl.handle.net/10045/69074 |
ISSN: | 1466-5026 (Print) | 1466-5034 (Online) |
DOI: | 10.1099/ijsem.0.002053 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2017 IUMS |
Revisión científica: | si |
Versión del editor: | http://dx.doi.org/10.1099/ijsem.0.002053 |
Aparece en las colecciones: | INV - EMM - Artículos de Revistas |
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2017_Leon_etal_IntJSystEvolMicrobiol_final.pdf | Versión final (acceso restringido) | 176,31 kB | Adobe PDF | Abrir Solicitar una copia |
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