Fungalpedia – Note 439, Teratosphaeriopsis

 

Teratosphaeriopsis Quaedvl. & Crous

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

Index Fungorum, Facesoffungi, MycoBank, GenBank, Fig. 1 

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

Based on phylogenies of ITS, LSU, RPB2, TEF-1α and BUT sequences, Quaedvlieg et al. (2014) introduced Teratosphaeriopsis as a monotypic genus within Teratosphaeriaceae, Mycosphaerellales in Dothideomycetes with type species Teratosphaeriopsis pseudoafricana. Teratosphaeriopsis pseudoafricana was originally identified as Amycosphaerella africana (= Mycosphaerella africana) based on morphology (Crous & Wingfield 1996). Teratosphaeriopsis pseudoafricana isolated as foliicolous and plant pathogenic. Morphologically, Teratosphaeriopsis species similar to Teratosphaeria sensu stricto but can only be distinguished via phylogenetic data (Wijayawardene et al. 2014). Teratosphaeriopsis is characterized by black ascomata, erumpent, globose, solitary or in clusters of up to three, with papillate apex and central ostiole; wall consisting of 2–3 layers of medium brown textura angularis; obovoid to broadly ellipsoid asci, aparaphysate, fasciculate, subsessile, bitunicate, 8-spored, straight to slightly incurved; obovoid with rounded ends ascospores with tri- to multiseriate, hyaline, medianly 1-septate, slightly constricted at the septum, straight to slightly curved, guttulate, thin-walled, widest in middle of apical cell; ascospores are brown and verruculose at germination (Quaedvlieg et al. 2014). No further species have been introduced to this genus, which remains monotypic.

Type species: Teratosphaeriopsis pseudoafricana Quaedvl. & Crous 

Other accepted species: This genus is monotypic.

 

 

Figure 1 – Teratosphaeriopsis pseudoafricana (CBS H-21137, holotype). a Asci. b Ascospores. Scale bars: b–c = 10 µm, d = 7 µm. Redrawn from Quaedvlieg et al. (2014).

 

References

Crous PW, Wingfield MJ. 1996 – Species of Mycosphaerella and their anamorphs associated with leaf blotch disease of Eucalyptus in South Africa. Mycologia 88, 441–458.

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. 

Wijayawardene NN, Crous PW, Kirk PM, Hawksworth DL et al. 2014 – Naming and outline of Dothideomycetes–2014 including proposals for the protection or suppression of generic names.  Fungal Diversity 69, 1–55.

 

Entry by

Zhang GQ, Center for Yunnan Plateau Biological Resources Protection and Utilization, College of Biological Resource and Food Engineering, Qujing Normal University, Qujing, Yunnan 655011, P.R. China.

 

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

 

Published online 2 December 2024

Back to Glossary Index Page