Fungalpedia – Note 83 Pleopunctum
Pleopunctum N.G. Liu, K.D. Hyde & J.K. Liu
Citation when using this entry: Liu et al., in prep – Taxonomy and phylogeny of brown-spored hyphomycetes. Fungal Diversity, in review.
Based on phylogenetic analyses of combined LSU, SSU, ITS and tef1-α sequence data, Liu et al. (2019) introduced Pleopunctum with the type species P. ellipsoideum and P. pseudoellipsoideum in the family Phaeoseptaceae (Pleosporales, Dothideomycetes). Subsequently, seven other Pleopunctum species were described in China and Thailand (Phukhamsakda et al. 2020, Boonmee et al. 2021, Senwanna et al. 2021, Wanasinghe et al. 2022, Xu et al. 2023). Pleopunctum is a saprobic genus in terrestrial habitats. The sexual morph of Pleopunctum has not been reported. The asexual state is characterized by macronematous, mononematous, short conidiophores, monoblastic, integrated conidiogenous cells and oval to ellipsoidal, brown, muriform conidia often with a hyaline, globose to ellipsoidal basal cell (Liu et al. 2019, Phukhamsakda et al. 2020, Boonmee et al. 2021, Senwanna et al. 2021, Wanasinghe et al. 2022, Xu et al. 2023). Hyaline phragmosporous or dictyosporous conidia has been reported in this genus (Phukhamsakda et al. 2020, Senwanna et al. 2021, Wanasinghe et al. 2022).
Type species: Pleopunctum ellipsoideum N.G. Liu, K.D. Hyde & J.K. Liu
Other accepted species:
Pleopunctum bauhiniae (Phukhams., D.J. Bhat & K.D. Hyde) Koukol & G. Delgado
Pleopunctum heveae Senwanna, Cheew. & K.D. Hyde
Pleopunctum megalosporum R.J. Xu, Q. Zhao & Boonmee
Pleopunctum menglaense Wanas.
Pleopunctum multicellularum R.J. Xu, Q. Zhao & Boonmee
Pleopunctum pseudoellipsoideum N.G. Liu, K.D. Hyde & J.K. Liu
Pleopunctum rotundatum R.J. Xu, Q. Zhao & Boonmee
Pleopunctum thailandicum J.Y. Zhang, Y.Z. Lu & K.D. Hyde
Figure 1 – Pleopunctum ellipsoideum a, b Colonies on natural substrate. c Conidial mass. d-g Conidia with short conidiophores. h-l Conidia with or without hyaline basal cell. m Germinated conidium. Scale bars: a = 200 μm, b = 100 μm, c = 50 μm, d-l = 15 μm.
Boonmee S, Wanasinghe DN, Calabon MS, Huanraluek N et al. 2021 – Fungal diversity notes 1387–1511: taxonomic and phylogenetic contributions on genera and species of fungal taxa. Fungal Diversity 111, 1–335.
Phukhamsakda C, McKenzie EHC, Phillips AJL, Jones EBG et al. 2020 – Microfungi associated with Clematis (Ranunculaceae) with an integrated approach to delimiting species boundaries. Fungal Diversity 102, 1–203.
Wanasinghe DN, Ren GC, Xu JC, Cheewangkoon R et al. 2022 – Insight into the taxonomic resolution of the pleosporalean species associated with dead woody litter in natural forests from Yunnan, China. Journal of Fungi 8, 375.
Liu NG, Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai, Thailand.
(Edited by Kevin D. Hyde & Eric H.C. McKenzie)