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Jennwenomyces, a new hyphomycete genus segregated from Belemnospora, producing versicolored phragmospores from percurrently extending conidiophores

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Abstract

Jennwenomyces, a new hyphomycete genus segregated from Belemnospora, is proposed to accommodate Belemnospora navicularis, based on morphological and molecular data. Jennwenomyces navicularis is described and illustrated based on two specimens collected on decaying culms of Miscanthus floridulus submerged in freshwater streams of Alishan area, Chiayi County, Taiwan. Jennwenomyces produces dematiaceous, versicolored, straight, navicular to cylindrical euseptate phragmospores borne on multiple percurrently extending, annellate conidiophores. Conidial secession is schizolytic, leaving a protuberant hilum at the base of the conidium. The genus is compared with Belemnospora and other morphologically similar hyphomycete genera with percurrent conidiophores such as Endophragmiella, Junewangia, Repetophragma, and Sporidesmiella. Phylogenetic analysis inferred from nuclear ribosomal DNA sequence data placed Jennwenomyces within the Sordariomycetes, clustered with species of Dictyosporella, Junewangia, and Sporidesmiella in the family Junewangiaceae.

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Acknowledgments

We are utmost grateful to Dr. Jenn-Wen Huang, Professor of Department of Plant Pathology, National Chung Hsing University, Taichung, Taiwan, who has been our teacher and mentor, for his love, passion, and guidance in our mycological career and personal development. We wish to thank Dr. Sung-Yuan Hsieh of Bioresource Collection and Research Centre, Food Industry Research and Development Institute, Hsinchu, for his help in scanning electron microscopy. We would like to thank Dr. Jie-Hao Ou for a discussion on the phylogeny of Jennwenomyces. We appreciate all the anonymous reviewers of this paper for giving us valuable comments and constructive input to our work. Mr. Liang-Yung Chen is thanked for his help in collecting plant materials in the field. Dr. Kun-Cheng Chang of the Department of Forestry and Natural Resources, National Chiayi University, is thanked for confirming the identity of the host material. Thanks are extended to Ms. Shing-Yu Lin and Ms. Hsin-Yi Peng for general technical support.

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This research was financially supported by the Ministry of Science and Technology of Taiwan (Grant Number 108-2621-B-415-001).

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Correspondence to Chang-Hsin Kuo.

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Goh, TK., Kuo, CH. Jennwenomyces, a new hyphomycete genus segregated from Belemnospora, producing versicolored phragmospores from percurrently extending conidiophores. Mycol Progress 19, 869–883 (2020). https://doi.org/10.1007/s11557-020-01602-7

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