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Type: Article
Published: 2014-09-26
Page range: 1–33
Abstract views: 25
PDF downloaded: 1

Roussoellaceae, a new pleosporalean family to accommodate the genera Neoroussoella gen. nov., Roussoella and Roussoellopsis

Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, 132 Lanhei Road, Kunming 650201, China. Institute of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand. School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand.
Institute of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand. School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand.
Institute of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand. School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand.
Faculty of Agriculture and Life Sciences, Hirosaki University, Bunkyo-cho 3, Hirosaki, Aomori 036-8561, Japan.
Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Kingdom of Saudi Arabia.
World Agroforestry Centre, East and Central Asia, Kunming 650201, Yunnan, China.
Institute of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand. School of Science, 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, China. Institute of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand. School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand.
Asexual morphs Epitype Phylogeny Pleosporales Taxonomy Type

Abstract

Roussoella and Roussoellopsis species are mostly known from monocotyledons (large grasses, bamboo and palms). Detailed phylogenies for this group are lacking and thus their family placement and relationships with other genera are unclear. Fresh collections of several Roussoella-like species, including the type species Roussoella nitidula were made from bamboo and palms in Thailand. In order to obtain a phylogenetic understanding of Roussoella-like species within the order Pleosporales, we carried out the phylogenetic analyses of ITS, LSU, TEF1α and RPB2 loci. The 15 target strains formed a well-supported clade (100% BS/1.00 PP) in phylogenetic reconstructions of individual and combined datasets, supporting the introduction of a new family Roussoellaceae. The Roussoellaceae clade can be distinguished into three well-supported sections, namely Roussoella/Roussoellopsis (93% BS/1.00 PP), Roussoella (88% BS/1.00 PP) and Neoroussoella. Based on both morphology and phylogenetic analyses, we introduce Neoroussoella gen. nov., epitypify Roussoella nitidula which is the type species of the genus, and introduce the new species Neoroussoella bambusae, Roussoella chiangraina, R. japanensis, R. neopustulans, R. siamensis, R. thailandica and R. verrucispora.