Fungalpedia – Note 435, Parateratosphaeria
Parateratosphaeria Quaedvl. & Crous
Citation when using this data: Tibpromma et al. 2024 (in prep.) – Fungalpedia, Ascomata.
Index Fungorum, Facesoffungi, MycoBank, GenBank, Fig. 1
Classification: Teratosphaeriaceae, Mycosphaerellales, Dothideomycetidae, Dothideomycetes, Pezizomycotina, Ascomycota, Fungi.
Based on phylogenies of LSU and RPB2 alignment, Quaedvlieg et al. (2014) introduced Parateratosphaeria within Teratosphaeriaceae, Mycosphaerellales in Dothideomycetes with the type species Parateratosphaeria bellula and type species was initially described as Mycosphaerella bellula (Crous & Wingfield 1993). In addition, P. altensteinii, P. karinae, P. marasasii and P. persoonii were introduced in the same study as combination novel which transfer from Teratosphaeria (Quaedvlieg et al. 2014). Parateratosphaeria is named after its similarity to the Teratosphaeria, but can be indistinguishable by ascospores turn brown and verruculose during germination and some species also have a mucoid sheath and can be distinguished based on DNA sequence data (Quaedvlieg et al. 2014). The members of Parateratosphaeria can be foliicolous or plant pathogenic and are characterized by amphigenous, immersed ascomata, substomatal, black, singular, gregarious; pyriform or globose, with a non-periphysate to periphysate papillate ostiole, becoming erumpent through the stomatal pore, with 3–4 layers of compressed textura angularis celled, without paraphyses, obclavate to cylindrical asci, pedicel short, straight, tapering to a narrow rounded apex with an indistinct ocular chamber, 8-spored, bitunicate with fissitunicate dehiscence, fusiform to ellipsoidal ascospores, 1-septate, with obtuse ends, straight, hyaline, guttulate, surrounded by an inconspicuous mucilaginous sheath while, germinating ascospores become brown and verruculose (Quaedvlieg et al. 2014). The fifth species (Parateratosphaeria stirlingiae) was introduced by Crous et al. (2017) from leaf spots of Stirlingia sp. in Australia.
Type species: Parateratosphaeria bellula (Crous & M.J. Wingf.) Quaedvl. & Crous
Other accepted species: Species Fungorum – search Parateratosphaeria
Figure 1 – Parateratosphaeria bellula (PREM 51028, holotype). a Vertical section through pseudothecium. b Ascospores. c Asci. Scale bars: a-c = 10 μm. Redrawn from Crous et al. (1993).
References
Crous PW, Wingfield MJ. 1993 – Additions to Mycosphaerella in the fynbos biome. Mycotaxon 46, 19–26.
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