Fungalpedia – Note 1313, Dwiroopaceae
Dwiroopaceae. K.V. Xavier, A.N. Kc, J.Z. Groenew., G.E. Vallad & Crous.
Citation when using this data: Hyde KD et al. 2020 (in prep.) – Fungalpedia, Ascomycota.
Index Fungorum, Facesoffungi, MycoBank, GenBank
Classification: Diaporthales, Diaporthomycetidae, Sordariomycetes, Pezizomycotina, Ascomycota, Fungi
Saprobic or pathogenic on leaves, twigs, branches and fruits. Sexual morph: Undetermined. Asexual morph: Coelomycetous. Conidiomata pycnidial, immersed to semi-immersed, erumpent, solitary, uni- to multiloculate, scattered, globose, black, ostiolate or lacking ostioles. Peridium thick-walled, comprising wall of 3–6 layers of pale brown cells of textura angularis. Conidiophores lining the innermost wall layer of peridium, mostly reduced to conidiogenous cells. Conidiogenous cells holoblastic, ampulliform to subcylindrical, hyaline to pale brown, sometimes proliferating percurrently at apex. Conidia unicellular, solitary, truncate at base, of three types: Macroconidia solitary, dark brown, aseptate, granular at surface, guttulate, thick-walled, broadly ellipsoid to obovoid, with longitudinal striations running along the length of conidia. Mesoconidia hyaline to pale brown, ellipsoid, aseptate and microconidia ellipsoid, hyaline, aseptate (adapted from Xavier et al. 2019).
Notes – Castlebury et al. (2002) placed Harknessia and Dwiroopa in Diaporthales based on LSU phylogeny. Subsequently, Crous et al. (2012d) established Harknessiaceae to include species of Harknessia with wuestneia-like sexual morphs in Diaporthales. Dwiroopaceae was established by Xavier et al. (2019) to accommodate a monotypic genus Dwiroopa including three species in Diaporthales. Dwiroopaceae species share closer characters with taxa of Harknessiaceae and have to sister relation with Harknessiaceae in a multigene phylogenetic analysis.
Type species: Dwiroopa Subram. & Muthumary, Proc. Indian Acad. Sci., Pl. Sci. 96(3): 196 (1986).
References
Entry by
Kevin David Hyde, Institute of Plant Health, Zhongkai University of Agriculture and Engineering, Haizhu District, Guangzhou 510225, P.R. China, Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand, Mushroom Research Foundation, 128 M.3 Ban Pa Deng T. Pa Pae, A. Mae Taeng, Chiang Mai 50150, Thailand, Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand, Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Science, Kunming 650201, Yunnan, P.R. China, School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand, World Agroforestry Centre, East and Central Asia, Kunming 650201, Yunnan, P.R. China
Published online 28 February 2020