Abstract
A hyphomyceteous fungus producing light-colored ramoconidia was isolated from midge (Clinodiplosis sp.) in southern China. In this study, this fungus was compared with 16 morphologically similar Cladosporium-like genera, but could not be assigned to any of them due to its distinct morphological characteristics, namely absence of sympodial conidiogenous cells and presence of swollen head-like conidiogenous regions. Moreover, on the basis of phylogenetic analyses of 18S ribosomal DNA (rDNA), 5.8S rDNA, and 28S rDNA, as well as genes for the RNA polymerase II subunit and the translation elongation factor 1-alpha, this fungus was identified as a member of the Ustilaginomycetes in Basidiomycota. Therefore, Capitulocladosporium clinodiplosidis gen. et sp. nov. is proposed to accommodate the new taxon, and its morphology is described and illustrated herein. The new genus is placed in Ustilaginomycetes but without further specification on order and family level (incertae sedis), since its teleomorph and lifestyle are currently unclear.
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Acknowledgements
The authors are thankful to Dr. Qi-Ming Wang, Dr. Fang Liu (State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences), and Jonathan González (Plant Pathology and Plant-Microbe Biology Section of the School of Integrative Plant Sciences, Cornell University) for their suggestions and comments. This work was supported by the National Natural Science Foundation of China (31100016, 31470151) and by Youth Fund of Shandong Province Natural Science Foundation of China (No. ZR2011CQ011).
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The dataset of aligned 18S + 5.8S + 28S + RPB2 + EF1 combined sequences used for phylogenetic analysis. (FASTA 224 kb)
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Sun, LY., Sun, X. & Guo, LD. Capitulocladosporium clinodiplosidis gen. et sp. nov., a hyphomyceteous ustilaginomycete from midge. Mycol Progress 17, 307–318 (2018). https://doi.org/10.1007/s11557-017-1352-7
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DOI: https://doi.org/10.1007/s11557-017-1352-7