Fungalpedia – Note 437, Suberoteratosphaeria

 

Suberoteratosphaeria 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 combining-loci of ITS, LSU, RPB2, TEF-1α and TUB alignment, Quaedvlieg et al. (2014) introduced Suberoteratosphaeria within Teratosphaeriaceae, Mycosphaerellales in Dothideomycetes with the type species Suberoteratosphaeria suberosa. This type of species was initially described as Mycosphaerella suberosa by Crous et al. (1993) (≡ Teratosphaeria suberosa (Crous et al. 2007). Suberoteratosphaeria has a morphology similar to that of the genus Teratosphaeria and is associated with corky leaf spots. In addition, the genus is plant pathogenic, associated with corky leaf spots, as well as on stems and leaf petioles (Quaedvlieg et al. 2014). Morphological characters of Suberoteratosphaeria was described as ascomata pseudothecial, solitary or aggregated, black, superficial to subepidermal, globose, glabrous; ostiole apical, central, papillate, lined with periphyses; wall of 3–4 layers of medium brown textura angularis, subhymenium of 3–5 layers of hyaline cells; fasciculate asci, bitunicate, aparaphysate, subsessile, 8-spored, ellipsoid to obclavate, straight or curved; bi- to triseriate or irregularly arranged ascospores, oblique, overlapping, straight ellipsoidal, obtuse at each end, hyaline to pale brown, smooth, 1-septate, guttulate, with or without mucoid sheath while, germinating ascospores become brown and verruculose (Quaedvlieg et al. 2014). Members of this genus can be foliicolous, caulicolous, or plant pathogenic (Quaedvlieg et al. 2014). Tree species in this genus have been accepted (S. pseudosuberosa, S. suberosa, and S. xenosuberosa).

Type species: Suberoteratosphaeria suberosa (Crous, F.A. Ferreira, Alfenas & M.J. Wingf.) Quaedvl. & Crous

Other accepted species: Species Fungorum – search Suberoteratosphaeria

 

 

Figure 1 – Suberoteratosphaeria suberosa (PREM 51082, holotype). a Ascus and ascospores. b Darkened ascospores germinating with multiple germ tubes. c Vertical section through an erumpent, subepidermal pseudothecium. Scale bars: a–c = 10 µm. Redrawn from Crous et al. (1993).

 

References

Crous P W, Braun U, Groenewald JZ. 2007 – Mycosphaerella is polyphyletic. Studies in Mycology 58(1), 1–32. 

Crous P W, Ferreira FA, Alfenas A, Wingfield MJ. 1993 – Mycosphaerella suberosa associated with corky leaf spots on Eucalyptus in Brazil. Mycologia 85(4), 705–710.

Quaedvlieg W, Binder M, Groenewald JZ, Summerell BA, Carnegie AJ 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 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

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