Discovery of two new Cystobasidiaceae species (Cystobasidiales, Cystobasidiomycetes) on phylloplane from western China

2026/04/29 by Peng Wang, Bing-yan SONG, Chun-Yue Chai +2 · 1 voice
Agricultural and Biological Sciences · Biochemistry, Genetics and Molecular Biology · #Mycorrhizal Fungi and Plant Interactions #Plant Pathogens and Fungal Diseases #Yeasts and Rust Fungi Studies

paper · doi:10.3897/mycokeys.131.185583

openalex publication_date 2026/04/29 · openalex created_date 2026/05/01 · openalex updated_date 2026/07/02

Abstract

The fungal family Cystobasidiaceae, which includes the genera Begerowomyces , Cystobasidium , Cystastrum , Halobasidium , Robertozyma , and Queiroziella , comprises species that are predominantly associated with plants in tropical to cold regions. However, members of the genera Queiroziella and Robertozyma remain poorly studied. In the present study, fungal species were identified using a polyphasic approach combining phenotypic characterization and molecular phylogenetic analyses based on the D1/D2 domain of the large subunit (LSU) rRNA gene, the internal transcribed spacer (ITS) region, and the second largest subunit of RNA polymerase II ( RPB2 ) gene. As a result, two novel species, Queiroziella pini sp. nov . (holotype CICC 33638 T ) and Robertozyma xinjiangensis sp. nov . (holotype GDMCC 2.525 T ), are proposed and described herein. Detailed descriptions, illustrations, and phylogenetic analyses of the novel taxa are provided, and comparisons with closely related species are presented. This study expands the known diversity of the family Cystobasidiaceae in China and provides a basis for future taxonomic and ecological investigations on this family.

Citations

• Examination of mycoparasites reveals a new type of host-parasite interface and rearranges the taxonomy of <i>Occultifur</i> and <i>Microsporomyces</i> ( <i>Cystobasidiomycetes</i> , <i>Basidiomycota</i> )
• Diversity and phylogeny of basidiomycetous yeasts from plant leaves and soil: Proposal of two new orders, three new families, eight new genera and one hundred and seven new species
• MEGA7: Molecular Evolutionary Genetics Analysis Version 7.0 for Bigger Datasets
• <i>Moniliellomycetes</i> and <i>Malasseziomycetes</i>, two new classes in <i>Ustilaginomycotina</i>
• Resolving the phylogenetic position of the Wallemiomycetes: an enigmatic major lineage of Basidiomycota
• CONFIDENCE LIMITS ON PHYLOGENIES: AN APPROACH USING THE BOOTSTRAP

Discussions

• 🍄 Two previously unknown fungal species, Queiroziella pini and Robertozyma xinjiangensis, have been identified in China. 🌲 These findings broaden the documented diversity of the Cystobasidiaceae fa [bsky, 1 points, 0 comments]

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