Fungalpedia – Note 525, Euteratosphaeria

 

Euteratosphaeria Quaedvl. & Crous

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

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

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

 Based on DNA sequence and morphology analyses, Quaedvlieg et al. (2014) introduced Euteratosphaeria within Teratosphaeriaceae in Mycosphaerellales with the type species E. verrucosiafricana. Euteratosphaeria is a monotypic genus that is characterized by solitary, immersed, erumpent ascomata, fasciculate, subsessile, bitunicate, obovoid to narrowly ellipsoid asci, overlapping, tri- to multiseriate, ellipsoid with obtuse ends, medianly 1-septate, tapering towards both ends, but more prominently towards the lower end ascospores (Quaedvlieg et al. 2014). Morphologically, Euteratosphaeria is similar to Teratosphaeria species but can be distinguished from Teratosphaeria species in that ascospores turn brown and verruculose upon germination, but germinate with more than two germ tubes (which remain hyaline), and grow irregularly along the long axis of the spore (Quaedvlieg et al. 2014). Currently, only one species (Euteratosphaeria verrucosiafricana, type species) is accepted and has been described in the dead leaves of Eucalyptus sp. in Indonesia (Quaedvlieg et al. 2014).

Type species: Euteratosphaeria verrucosiafricana (Crous & M.J. Wingf.) Quaedvl. & Crous

Other accepted species: This genus is monotypic.

Figure 1 – Morphology of Euteratosphaeria verrucosiafricana. a-b Asci. c-d Ascospores Scale bars: a-d = 3 μm. Redrawn from Crous et al. (2006).

 

References

Crous PW, Wingfield MJ, Mansilla JP, Alfenas AC et al. 2006 – Phylogenetic reassessment of Mycosphaerella spp. and their anamorphs occurring on Eucalyptus. II. Studies in Mycology 55(1), 99–131.

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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