Occultifur kilbournensis f.a. sp. nov., a new member of the Cystobasidiales associated with maize (Zea mays) cultivation

Antonie van Leeuwenhoek
Cletus P Kurtzman, Christie J Robnett

Abstract

During a study of microorganisms associated with maize (Zea mays) cultivation, yeasts were isolated from overwintered stalks, cobs and surrounding soil, which were collected from an agricultural field in south-central Illinois, USA. Predominant among isolates were two species of Cryptococcus (Cr. flavescens, Cr. magnus) and a red yeast that D1/D2 LSU rRNA gene sequences revealed to be a new species of the basidiomycete yeast genus Occultifur. The species, which was not detected in the same field during the growing season, is described here as Occultifur kilbournensis (MycoBank number MB 811259; type strain NRRL Y-63695, CBS 13982, GenBank numbers, D1/D2 LSU rRNA gene, KP413160, ITS, KP413162; allotype strain NRRL Y-63699, CBS 13983). Mixture of the type and allotype strains resulted in formation of hyphae with clamp connections and a small number of apparent basidia following incubation on 5% malt extract agar at 15 °C for 2 months. In view of the uncertainty of the life cycle, the new species is being designated as forma asexualis. From analysis of D1/D2 and ITS nucleotide sequences, the new species is most closely related to Occultifur externus.

References

Apr 1, 1997·Canadian Journal of Microbiology·M J NoutD T Wicklow
Feb 26, 2015·International Journal of Systematic and Evolutionary Microbiology·Pannida KhunnamwongSavitree Limtong

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Citations

May 29, 2018·International Journal of Systematic and Evolutionary Microbiology·Nataša ŠibancIrena Maček
Jan 17, 2019·FEMS Yeast Research·Andrey M Yurkov, Cletus P Kurtzman
Aug 5, 2017·International Journal of Systematic and Evolutionary Microbiology·Pannida KhunnamwongSavitree Limtong

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