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Taxonomy and phylogenetic appraisal of Spegazzinia musae sp. nov. and S. deightonii (Didymosphaeriaceae, Pleosporales) on Musaceae from Thailand

Binu C. SamarakoonCenter of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, ThailandRungtiwa PhookamsakHonghe Center for Mountain Futures, Kunming Institute of Botany, Chinese Academy of Sciences, Honghe County, Yunnan, ChinaDhanushka N. WanasingheHonghe Center for Mountain Futures, Kunming Institute of Botany, Chinese Academy of Sciences, Honghe County, Yunnan, ChinaPutarak ChomnuntiCenter of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, ThailandKevin D. HydeInstitute of Plant Health, Zhongkai University of Agriculture and Engineering, Guang Dong Province, ChinaEric H. C. McKenzieLandcare Research Manaaki Whenua, Private Bag 92170, Auckland, New ZealandItthayakorn PromputthaDepartment of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, ThailandJianchu XuEast and Central Asia Regional Office, World Agroforestry Centre (ICRAF), Kunming 650201, Yunnan, ChinaYunju LiThe State Phosphorus Resource Development and Utilization Engineering Technology Research Centre, Yunnan Phosphate Chemical Group Co. Ltd, Kunming 650201, China

2020en

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Annotatsiya

Tropical plants host a range of fungal niches including endophytes, pathogens, epiphytes and saprobes. A study undertaken to discover the saprobic fungal species associated with Musa sp. (banana) from northern Thailand found two hyphomycetous taxa of Spegazzinia (Didymosphaeriaceae, Pleosporales). These were collected during the dry season and their morpho-molecular taxonomic relationships were investigated. Based on phylogenetic analysis of combined SSU, LSU, ITS and TEF1-α sequence data (77% ML, 0.99 BYPP) and contrasting morphological features to the sister taxon, we introduce Spegazzinia musae as a novel species from a decaying leaf of Musa sp. Details on the taxonomy, ecology and geographical distribution of Spegazzinia species are provided. In addition, we report S. deightonii as a new host record from Musa sp. Our data further validate the taxonomic placement of Spegazzinia in Didymosphaeriaceae.

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DOI: 10.3897/mycokeys.70.52043

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