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<p>During the course of independent studies, three conspecific yeast strains were obtained from insect frass, berries and mosses in different regions of Russia. Phylogenetic analysis of two DNA-barcoding regions (internal transcribed spacer and the D1/D2 domain of the LSU rRNA gene) revealed that they belong to undescribed <i>Curvibasidium</i> species with basal position to other species. Mating tests of the strains revealed true mycelium with clamp connections and teliospores. The teliospore germination and basidia-like structures were also characterised, which is distinguished from other teleomorphic species of the genus. The new species differs genetically from other closely related <i>Curvibasidium</i> species by other genes studied (RPB1, RPB2 and TEF1) and can also be distinguished from them by physiological characteristics. Based on these results, the new species <i>Curvibasidium golubevii</i> sp. nov. (holotype: KBP Y-6775 and allotype: KBP Y-7399, MycoBank no.: MB860467) is formally described.</p>

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Curvibasidium golubevii sp. nov., a new dimorphic basidiomycetous fungus from different habitats

  • 期刊论文

  • 发表日期：

    2026年1月5日

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  • Aleksey Kachalkin,
  • Aleksandra Bekkarevich,
  • Maria Tomashevskaya,
  • Anna Glushakova

摘要

During the course of independent studies, three conspecific yeast strains were obtained from insect frass, berries and mosses in different regions of Russia. Phylogenetic analysis of two DNA-barcoding regions (internal transcribed spacer and the D1/D2 domain of the LSU rRNA gene) revealed that they belong to undescribed Curvibasidium species with basal position to other species. Mating tests of the strains revealed true mycelium with clamp connections and teliospores. The teliospore germination and basidia-like structures were also characterised, which is distinguished from other teleomorphic species of the genus. The new species differs genetically from other closely related Curvibasidium species by other genes studied (RPB1, RPB2 and TEF1) and can also be distinguished from them by physiological characteristics. Based on these results, the new species Curvibasidium golubevii sp. nov. (holotype: KBP Y-6775 and allotype: KBP Y-7399, MycoBank no.: MB860467) is formally described.