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Issue: Vol. 406 No. 4: 19 June 2019
Type: Article
Published: 2019-06-19
DOI: 10.11646/phytotaxa.406.4.1
Page range: 218–236
Abstract views: 32
PDF downloaded: 1

The holomorph of Neoroussoella alishanense sp. nov. (Roussoellaceae, Pleosporales) on Pennisetum purpureum (Poaceae)

Department of Plant Medicine, National Chiayi University, 300 Syuefu Road, Chiayi City 60004, Taiwan. Centre of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand. Department of Entomology and Plant Pathology, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand. Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, 132 Lanhei Road, Kunming 650201, People’s Republic of China.
Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, 132 Lanhei Road, Kunming 650201, People’s Republic of China. World Agroforestry Centre, East and Central Asia, 132 Lanhei Road, Kunming 650201, Yunnan, People’s Republic of China.
Centre of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand. Centre of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand.
Department of Entomology and Plant Pathology, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand.
Centre of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand. Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, 132 Lanhei Road, Kunming 650201, People’s Republic of China. World Agroforestry Centre, East and Central Asia, 132 Lanhei Road, Kunming 650201, Yunnan, People’s Republic of China.
Department of Plant Medicine, National Chiayi University, 300 Syuefu Road, Chiayi City 60004, Taiwan.
1 new species Dothideomycetes graminicolous fungi phylogeny taxonomy

Abstract

A new species of Neoroussoella (Roussoellaceae) collected in Taiwan is introduced from Pennisetum purpureum with both asexual and sexual morphs. Phylogenetic analysis of a concatenated LSU-ITS-SSU-TEF1-α-RPB2 sequence dataset reveals that the new species forms a distinct sister clade with N. bambusae with high statistical support (100% ML/ 1.00 BYPP). Neoroussoella alishanense is morphologically similar with the generic type, N. bambusae, but N. alishanense is distinct in having larger ascomata and its ascospores lack a mucilaginous sheath. While, N. bambusae has smaller ascomata and its ascospores are surrounded by a mucilaginous sheath. A comparison of ITS, RPB2 and TEF1-α nucleotide bases shows that they are distinct species.