Fungalpedia – Note 1545, Groveolopsis

 

Groveolopsis. Boedijn.

Index Fungorum, Facesoffungi, MycoBank, GenBank, Fig 1

Classification: Incertae sedis, Incertae sedis, Incertae sedis, Incertae sedis, Pezizomycotina, Ascomycota, Fungi

 

Parasitic on the host plant. The sexual morph is undetermined. The asexual morph is characterised by the immersed pycnidial conidiomata, which are black, glabrous, solitary to aggregated or confluent, thick-walled, unilocular and ostiolate. The ostiole is short, circular to oval and located in the center. The pycnidial wall is comprised of textura globulosa to textura prismatica, thick-walled and brown to hyaline cells. Conidiophores are reduced to conidiogenous cells. Conidiogenous cells are enteroblastic and phialidic, ampulliform to subcylindrical, smooth and hyaline. Conidia are hyaline, guttulate, smooth, obclavate, 0–1-septate, apex attenuated and base narrow and truncate, with a cup-like or irregular, and mucoid at the base and appendage at apex (Boedijn 1951, Li et al. 2020).

Notes: Groveolopsis was introduced by Boedijn (1951) based on G. pandani as the type species. Subsequently, Li et al. (2020) considered one collection as G. pandani based on morphology and ITS sequence data. Based on the NCBI GenBank, the ITS of Li et al. (2020) collection showed the highest similarity to Acrocalymma spp. However, Groveolopsis has obclavate, 0–1-septate conidia, which differs from cylindrical to fusoid and 0–3-septate conidia in Acrocalymma (Trakunyingcharoen et al. 2014). Therefore, Li et al. (2020) regarded G. pandani as a generic taxon in Acrocalymmaceae (Pleosporales). Wijayawardene et al. (2022) estimated that there were six species in Groveolopsis without providing any species names. Species Fungorum (September 2024) lists one species in Groveolopsis. There is one ITS sequence data available for Groveolopsis in GenBank (September 2024). The updated taxonomic treatment of this genus is Acrocalymmaceae, in Pleosporales (Dothideomycetes) (Wijayawardene et al. 2022, Hyde et al. 2024).

 

Type species: Groveolopsis pandani (Höhn.) Boedijn, Sydowia 5(3-6): 225 (1951)

= Septoriopsis pandani Höhn., Sber. Akad. Wiss. Wien, Math.-naturw. Kl., Abt. 1 129: 168 (1920)

= Rhabdospora pandani (Höhn.) Petr., Sydowia 5(3-6): 351 (1951).

 

 

Figure 1 – Groveolopsis pandani (MFLU 13-0309) a, b Herbarium specimens. c, d Appearance of black conidiomata on the host. e, f Vertical sections of conidiomata. g, h Sections of peridium. i–o Conidiogenous cells and developing conidia. p–v Conidia (arrows indicate basal appendages). Scale bars: c = 1000 µm, d–f = 100 µm, g = 20 µm, i–j = 5 µm, k–o, p–v = 10 µm. (Originally published in Li et al. (2020) and republished with authority)

 

References

Boedijn KB. 1951 – Some mycological notes. Sydowia 5(3-6), 211–229.

Hyde KD, Noordeloos MT, Thiyagaraja V, He MQ et al. 2024 – The 2024 Outline of Fungi and fungus-like taxa. Mycosphere 15(1), 5146–6239.

Li WJ, McKenzie EH, Liu JK, Bhat DJ et al. 2020 – Taxonomy and phylogeny of hyaline-spored coelomycetes. Fungal Diversity 100, 279–801.

Trakunyingcharoen T, Lombard L, Groenewald JZ, Cheewangkoon R et al. 2014 – Mycoparasitic species of Sphaerellopsis, and allied lichenicolous and other genera. IMA Fungus 5, 391–414.

Wijayawardene NN, Hyde KD, Dai DQ, Sánchez-García ML et al. 2022 – Outline of Fungi and fungus-like taxa–2021. Mycosphere 13(1), 53–453.

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