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http://cicy.repositorioinstitucional.mx/jspui/handle/1003/499| Comparative effects of two species of floricolous Metschnikowia yeasts on nectar | |
| MARIA AZUCENA CANTO AGUILAR | |
| Acceso Abierto | |
| Atribución-NoComercial-SinDerivadas | |
| DOI: 10.3989/ajbm.2396 | |
| BOMBUS TERRESTRIS FRUCTOSE HELLEBORUS FOETIDUS NECTAR-LIVING YEASTS ROSMARINUS OFFICINALIS | |
| Nectar yeast communities in southern Spain are dominated by two closely-related species, Metschnikowia reukaufii Pitt & M.W. Mill. and M. gruessii Gim.-Jurado (Ascomycota, Saccharomycetales), although they tend to be distributed differentially across different host plants. We explore here the possibility that the two yeasts play different functional roles in floral nectar by differing in their impact on sugar concentration and composition of nectar. Experiments were undertaken under controlled conditions using umblebees caught foraging on the flowers of two different host plants each of which is known to harbor predominantly one of the two yeasts. Bumblebees were used as sources of inocula to obtain two groups of samples from the nectar of Helleborus foetidus L. (Ranunculaceae): nectar samples inoculated with M. gruessii and samples inoculated with M. reukaufii. Metschnikowia gruessii was poorly represented in nectar samples, while M. reukaufii was by far the most common and had the highest cell density. Although the two yeasts caused relatively similar changes in nectar sugar composition, which involved increasing fructose and decreasing sucrose proportions, they marginally differed in their quantitative impact on total nectar sugar concentration. Results suggest that differential yeast occurrence across host plants may lead to yeast specialization and modify the outcomes of the plant-pollinator interface. | |
| 2015 | |
| Artículo | |
| Anales del Jardin Botanico de Madrid. 72(1), e019, 2015 | |
| Inglés | |
| Canto, A., Herrera, C.M., García, I.M., García, M., Bazaga, P. 2015. Comparative effects of two species of floricolous Metschnikowia yeasts on nectar. Anales Jard. Bot. Madrid 72(1): e019 | |
| BIOLOGÍA Y QUÍMICA | |
| Versión publicada | |
| publishedVersion - Versión publicada | |
| Aparece en las colecciones: | Artículos de Investigación Arbitrados |
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| 2015_AI_id36977_Azucena_Canto.pdf | 814.49 kB | Adobe PDF | Visualizar/Abrir |