1887

Abstract

Ethanol production at high temperatures has garnered much interest in recent years and a key factor is the availability of thermotolerant yeasts. During an investigation on the diversity of thermotolerant yeasts from different habitats, a novel yeast species from the spent wash of a distillery unit associated with a sugar factory was isolated. Phylogenetic analysis of D1/D2 large subunit and ITS rRNA genes placed this species in the ascomycetous genus . The novel species can be distinguished from the closely related species using these rRNA gene regions. The cells of the new species are ovoid to ellipsoid with a diameter of 3.5–6.0×2.4–3.10 µm, while cells are cylindrical with a cell diameter of 1.5–3.0×6–23 µm. This novel species represents, together with , one of the two most thermotolerant yeast species in the genus , able to grow at 42 °C sp. nov. is proposed during this study.

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2019-07-25
2019-08-25
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