RESUMEN
Nocardia ignorata is a recently described species identified on the basis of a single isolate of unknown origin. Here we describe the epidemiological, phenotypic, and phylogenetic characteristics of this new species, based on five new clinical and soil isolates.
Asunto(s)
Nocardiosis/microbiología , Nocardia/clasificación , Nocardia/aislamiento & purificación , Sistema Respiratorio/microbiología , Microbiología del Suelo , Proteínas Bacterianas/genética , Técnicas de Tipificación Bacteriana , ADN Bacteriano/análisis , ADN Ribosómico/análisis , Europa (Continente)/epidemiología , Proteínas de Choque Térmico/genética , Humanos , Kuwait/epidemiología , Nocardia/genética , Nocardia/fisiología , Nocardiosis/epidemiología , Fenotipo , Filogenia , Reacción en Cadena de la Polimerasa/métodos , ARN Ribosómico 16S/genéticaRESUMEN
Three isolates collected from human mycetomas and showing an unusual brownish purple pigmentation on Bennett agar plates were analyzed by a polyphasic taxonomic approach, including morphological, biochemical, physiological, and chemotaxonomic properties coupled with genomic and phylogenetic analysis. It clearly appeared that these microorganisms were distinct from their closest phenotypic and genetic match, the most related species according to 16S rRNA gene sequence analysis being Nocardia pseudobrasiliensis. The data obtained indicated that the three clinical strains should be recognized as a new species for which the name Nocardia mexicana sp. nov. is proposed.