{"title":"Phylogenetic and Taxonomic Study of <i>Asteroconium saccardoi</i>: A Fungal Species with Aster-shaped Spores Infecting <i>Machilus thunbergii</i>.","authors":"Dong Jae Lee, Ji-Hyun Park, Young-Joon Choi","doi":"10.1080/12298093.2025.2457192","DOIUrl":null,"url":null,"abstract":"<p><p>Small galls and white blisters with cup-like fungal structures were observed on the leaves of <i>Machilus thunbergii</i> (Lauraceae), a tree species native to East Asia. Based on its distinctive symptoms and aster-shaped spores, the causal agent was identified as <i>Asteroconium saccardoi</i>. Despite its unique characteristics, the genus <i>Asteroconium</i> remains taxonomically unresolved (incertae sedis) within the phylum Ascomycota due to the absence of both sequence data and available culture. The present study successfully obtained ITS and LSU rDNA sequences from its fresh spore masses formed on <i>M. thunbergii</i>. Phylogenetic analysis revealed that <i>A. saccardoi</i> belongs to the order Exobasidiales under Basidiomycota. Detailed morphological characteristics of basidia and basidiospores were documented, providing comprehensive insights into the taxonomy and phylogeny of <i>Asteroconium</i> within Exobasidiales.</p>","PeriodicalId":18825,"journal":{"name":"Mycobiology","volume":"53 1","pages":"128-133"},"PeriodicalIF":2.0000,"publicationDate":"2025-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11841111/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Mycobiology","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.1080/12298093.2025.2457192","RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/1/1 0:00:00","PubModel":"eCollection","JCR":"Q2","JCRName":"AGRONOMY","Score":null,"Total":0}
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Abstract
Small galls and white blisters with cup-like fungal structures were observed on the leaves of Machilus thunbergii (Lauraceae), a tree species native to East Asia. Based on its distinctive symptoms and aster-shaped spores, the causal agent was identified as Asteroconium saccardoi. Despite its unique characteristics, the genus Asteroconium remains taxonomically unresolved (incertae sedis) within the phylum Ascomycota due to the absence of both sequence data and available culture. The present study successfully obtained ITS and LSU rDNA sequences from its fresh spore masses formed on M. thunbergii. Phylogenetic analysis revealed that A. saccardoi belongs to the order Exobasidiales under Basidiomycota. Detailed morphological characteristics of basidia and basidiospores were documented, providing comprehensive insights into the taxonomy and phylogeny of Asteroconium within Exobasidiales.
期刊介绍：
Mycobiology is an international journal devoted to the publication of fundamental and applied investigations on all aspects of mycology and their traditional allies. It is published quarterly and is the official publication of the Korean Society of Mycology. Mycobiology publishes reports of basic research on fungi and fungus-like organisms, including yeasts, filamentous fungi, lichen fungi, oomycetes, moulds, and mushroom. Topics also include molecular and cellular biology, biochemistry, metabolism, developmental biology, environmental mycology, evolution, ecology, taxonomy and systematics, genetics/genomics, fungal pathogen and disease control, physiology, and industrial biotechnology using fungi.
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