Fungalpedia – Note 522, Mucomycosphaerella

 

Mucomycosphaerella Quaedvl. & Crous

Citation when using this data: Tibpromma et al. 2024 (in prep.) – Fungalpedia, Ascomata.

Index Fungorum, Facesoffungi, MycoBank, GenBank

Classification: Mycosphaerellaceae, Mycosphaerellales, Dothideomycetidae, Dothideomycetes, Pezizomycotina, Ascomycota, Fungi.

Based on combined LSU and RPB2 sequence data and morphological analyses, Quaedvlieg et al. (2014) introduced Mucomycosphaerella to Mycosphaerellaceae to accommodate Mucomycosphaerella eurypotami. Mucomycosphaerella is a monotypic genus, and characterized by depressed ellipsoidal, immersed becoming erumpent, solitary or in clusters of two or more joined together ascomata, sparse hamathecium, indistinctly pedicellate, bitunicate, fissitunicate, thick-walled, expanding endotunica, tough ectotunica and a thick gelatinous asci, elongate ellipsoidal, 1-septate, bi- to triseriate, slightly constricted at the septum, with one additional pseudoseptum in each cell, surrounded by a gelatinous sheath that is constricted around the septum ascospores (Quaedvlieg et al. 2014). In addition, Mucomycosphaerella was distinguished from Mycosphaerella s. str. with well-developed, persistent mucoid sheaths around ascospores and the absence of Ramularia asexual morphs. In addition, depressed ascomata with a pale, thin-walled lower half and a hamathecium of loosely branched, anastomosing hyphae in a hymenial gel, with hyaline ascospores (Kohlmeyer et al. 1999). Only one species (Mucomycosphaerella eurypotami, a type species) was introduced, which was collected from the leaves of Juncus roemerianu in the United States (Quaedvlieg et al. 2014).

Type species: Mucomycosphaerella eurypotami (Kohlm., Volkm.-Kohlm. & O.E. Erikss.) Quaedvl. & Crous

Other accepted species: This genus is monotypic.

 

References

Kohlmeyer J, Volkmann-Kohlmeyer B, Eriksson OE. 1999 – Fungi on Juncus roemerianus 12. Two new species of Mycosphaerella and Paraphaeosphaeria (Ascomycotina). Botanica Marina 42, 505–511. 

Quaedvlieg W, Binder M, Groenewald JZ, Summerell BA et al. 2014 – Introducing the consolidated species concept to resolve species in the Teratosphaeriaceae. Persoonia-Molecular Phylogeny and Evolution of Fungi 33(1), 1–40.

 

Entry by

Zhang X, Excellence Center of Microbial Diversity and Sustainable Utilization, Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand; Center for Yunnan Plateau Biological Resources Protection and Utilization, College of Biological Resource and Food Engineering, Qujing Normal University, Qujing, Yunnan 655011, China

 

(Edited by Saowaluck Tibpromma, Samaneh Chaharmiri-Dokhaharani, & Achala R. Rathnayaka)

 

Published online 9 December 2024

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