Additions to Phaeosphaeriaceae (Pleosporales): Elongaticollum gen. nov., Ophiosphaerella taiwanensis sp. nov., Phaeosphaeriopsis beaucarneae sp. nov. and a new host record of Neosetophoma poaceicola from Musaceae

Danushka S Tennakoon; Kasun M Thambugala; Dhanushka N Wanasinghe; Eleni Gentekaki; Itthayakorn Promputtha; Chang-Hsin Kuo; Kevin D Hyde

doi:10.3897/mycokeys.70.53674

Additions to Phaeosphaeriaceae (Pleosporales): Elongaticollum gen. nov., Ophiosphaerella taiwanensis sp. nov., Phaeosphaeriopsis beaucarneae sp. nov. and a new host record of Neosetophoma poaceicola from Musaceae

MycoKeys. 2020 Jul 27:70:59-88. doi: 10.3897/mycokeys.70.53674. eCollection 2020.

Authors

Danushka S Tennakoon^{1

2

3}, Kasun M Thambugala⁴, Dhanushka N Wanasinghe⁵, Eleni Gentekaki^{2

3}, Itthayakorn Promputtha^{6

7}, Chang-Hsin Kuo¹, Kevin D Hyde^{2

3

5

6

8}

Affiliations

¹ Department of Plant Medicine, National Chiayi University, 300 Syuefu Road, Chiayi City 60004, Taiwan.
² School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand.
³ Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai, 57100, Thailand.
⁴ Genetics and Molecular Biology Unit, Faculty of Applied Sciences, University of Sri Jayewardenepura, Gangodawila, Nugegoda, Sri Lanka.
⁵ CAS Key Laboratory for Plant Biodiversity and Biogeography of East Asia (KLPB), Kunming Institute of Botany, Chinese Academy of Science, Kunming 650201, Yunnan, China.
⁶ Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand.
⁷ Environmental Science Research Center, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand.
⁸ Institute of Plant Health, Zhongkai University of Agriculture and Engineering, Haizhu District, Guangzhou 510225, China.

Abstract

A novel ascomycetous genus, Elongaticollum, occurring on leaf litter of Hedychium coronarium (Zingiberaceae) in Taiwan, is described and illustrated. Elongaticollum is characterized by dark brown to black, superficial, obpyriform, pycnidial conidiomata with a distinct elongate neck, and oval to oblong, hyaline, aseptate conidia. Phylogenetic analyses (maximum likelihood, maximum parsimony and Bayesian) of combined ITS, LSU, SSU and tef1-α sequence data revealed Elongaticollum as a distinct genus within the family Phaeosphaeriaceae with high statistical support. In addition, Ophiosphaerella taiwanensis and Phaeosphaeriopsis beaucarneae are described as new species from dead leaves of Agave tequilana and Beaucarnea recurvata (Asparagaceae), respectively. Neosetophoma poaceicola is reported as a new host record from dead leaves of Musa acuminata (Musaceae). Newly described taxa are compared with other similar species and comprehensive descriptions and micrographs are provided.

Keywords: Zingiberaceae; Asparagaceae, Dothideomycetes; leaf litter; new taxa.

Danushka S. Tennakoon, Kasun M. Thambugala, Dhanushka N. Wanasinghe, Eleni Gentekaki, Itthayakorn Promputtha, Chang- Hsin Kuo, Kevin D. Hyde.