Fungalpedia – Note 521, Xenomycosphaerella

 

Xenomycosphaerella Quaedvl. & Crous

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

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

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

Quaedvlieg et al. (2014) introduced Xenomycosphaerella in Mycosphaerellaceae to accommodate Xenomycosphaerella elongata, based on combined ITS and LSU sequence data. Xenomycosphaerella is characterized by dark brown, pseudothecial ascomata, fasciculate, subsessile, bitunicate, obovoid to broadly ellipsoidal, aparaphysate asci, thin- or thick-walled, bi-to-multiseriate, fusoid-ellipsoidal with obtuse ends, and medianly or unequally 1-septate ascospores (Quaedvlieg et al. 2014). Currently, three species (Xenomycosphaerella elongata, X. yunnanensis, X. diplazii) were described from leaves of Diplazium sp., Eucalyptus camaldulensis and E. urophylla in Brazil, China, and Venezuela (Quaedvlieg et al. 2014, Guatimosim et al. 2016).

Type species: Xenomycosphaerella elongata (Crous & M.J. Wingf.) Quaedvl. & Crous

Other accepted species: Species Fungorum – search Xenomycosphaerella

Figure 1 – Morphology of Xenomycosphaerella elongata. a Ascus. b Ascospores. Scale bars: a–c = 10 μm. Redrawn from Crous et al. (2019).

 

References

Crous PW, Wingfield MJ, Cheewangkoon R, Carnegie AJ et al. 2019 – Foliar pathogens of eucalypts. Studies in Mycology 94, 125–298.

Guatimosim E, Schwartsburd PB, Barreto RW, Crous PW. 2016 – Novel fungi from an ancient niche: cercosporoid and related sexual morphs on ferns. Persoonia 37, 106–141.

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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