1887

Abstract

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 . The name f.a., sp. nov. (EBDCdVMor24-1=CBS 15053=NRRL Y-63972) is proposed to accommodate this new species. was isolated from floral nectar of , and . The ascosporic state of the novel species was not found. 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 , and . The close genealogical relationship of with the clade is also consistent with the striking similarity of their ‘aeroplane’ cells morphologies and the lack of utilization of the α-glucoside trehalose. The ecology of these novel species and its probable endemicity are discussed.

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2018-06-01
2024-12-12
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