1887

Abstract

Fourteen yeast isolates comprising three taxa were cultured from digestive tracts of adult species (Neuroptera: Chrysopidae) and their eggs. The yeast taxa were distinguished based on an estimated molecular phylogeny, DNA sequences and traditional taxonomic criteria. The new yeasts are closely related to but are sufficiently distinguished by sequence comparison of rRNA gene sequences to consider them as novel species. Here, three novel species are described and their relationships with other taxa in the Saccharomycetes are discussed. sp. nov. (type strain, NRRL Y-27615=CBS 9803) produced needle-shaped ascospores and was the only teleomorph found. Large numbers of chlamydospores similar to those observed in were also produced. The other two novel species are asexual yeasts, sp. nov. (type strain, NRRL Y-27607=CBS 9804) and sp. nov. (type strain, NRRL Y-27619=CBS 9805), sister taxa of and . A specialized relationship between yeasts and lacewing hosts may exist, because the yeasts were isolated consistently from lacewings only. Although was isolated from eggs and adult lacewings, suggesting the possibility of vertical transmission, no yeast was isolated from larvae.

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2004-09-01
2019-12-06
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