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Título: | Metschnikowia maroccana f.a., sp. nov., a new yeast species associated with floral nectar from Morocco |
Autor: | Vega, Clara de CSIC ORCID; Albaladejo, Rafael G.; Lachance, Marc-André | Palabras clave: | Metschnikowia Flower-associated yeasts Host plant Nectar Novel species Yeast ecology |
Fecha de publicación: | 2018 | Editor: | Society for General Microbiology | Citación: | International Journal of Systematic and Evolutionary Microbiology 68: 2028- 2035 (2018) | Resumen: | Wild flowers, and in particular, nectar of flowers, have been shown to be a rich reservoir of yeast biodiversity. In a taxonomic study of yeasts recovered from floral nectar in Morocco, nine strains were found to represent a novel species. Morphological and physiological characteristics and sequence analyses of the D1/D2 region of the large subunit rRNA gene as well as the internal transcribed spacer region showed that the novel species belonged to the genus Metschnikowia. The name Metschnikowia maroccana f.a., sp. nov. (EBDCdVMor24-1=CBS 15053=NRRL Y-63972) is proposed to accommodate this new species. Metschnikowia maroccana was isolated from floral nectar of Teucrium pseudochamaepitys, Teucrium polium and Gladiolus italicus. The ascosporic state of the novel species was not found. Metschnikowia maroccana was phylogenetically distinct from any currently recognized species and forms a well-supported subclade (bootstrap value 81 %) containing species associated with flowers and flower-visiting insects, including Metschnikowia gruessii, Metschnikowia lachancei and Metschnikowia vanudenii. The close genealogical relationship of M. maroccana with the M. gruessii clade is also consistent with the striking similarity of their ‘aeroplane’ cells morphologies and the lack of utilization of the a-glucoside trehalose. The ecology of these novel species and its probable endemicity are discussed. | Versión del editor: | http://dx.doi.org/10.1099/ijsem.0.002784 | URI: | http://hdl.handle.net/10261/201659 | DOI: | 10.1099/ijsem.0.002784 | Identificadores: | doi: 10.1099/ijsem.0.002784 issn: 1466-5026 |
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