Fungalpedia – Note 469, Dominikia 

 

Dominikia Błaszk., Chwat & Kovács

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

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

Classification: Glomeraceae, Glomerales, Incertae sedis, Glomeromycetes, Glomeromycotina, Glomeromycota, Fungi.

Based on morphological studies of spores and mycorrhizal structures and phylogenetic analyses of DNA sequences, Błaszkowski et al. (2014) revised Glomus achrum, G. iranicum, and G. minutum and transferred them to a new genus Dominikia, with D. minutum as type species. Dominikia is an arbuscular mycorrhizal (AM) fungus genera of the phylum Glomeromycota, there are 16 epithets (13 species) deposited in Index Fungroum (2024). Oehl et al. (2015) summarized that Dominikia spp. do not only form colorless to very pale colored spores but also bright yellow to golden yellow spores of small spore sizes. Later, Błaszkowski et al. (2021) amended the description of Dominikia based on new species. Therefore, the genus is characterized by fungi forming glomoid-like spores in soil or epigeous glomerocarps (sporocarps), with hyaline to yellow-brown spores, small, and globose. Spore wall with two–three layers. Spore subtending hypha cylindrical to funnel-shaped with a pore open or occluded by a septum, forming vesiculararbuscular or only arbuscular mycorrhiza stained dark in Trypan blue (Błaszkowski et al. 2014, Błaszkowski et al. 2021).

 Type species: Dominikia minuta (Błaszk., Tadych & Madej) Błaszk., Chwat & Kovács

Other accepted species: Species Fungorum – search Dominikia

 

Figure 1 – Morphology of Dominikia (redrawn from Błaszkowski et al. 2014, Oehl et al. 2015, Błaszkowski et al. 2021 and Yu et al. 2022). a–e Spore wall layers 1–3 and spore subtending hypha. Scale bars: a, d-f = 10 μm, b = 25.

 

References 

Błaszkowski J, Chwat G, Góralska A, Ryszka P. et al. 2014 – Two new genera, Dominikia and Kamienskia, and D. disticha sp. nov. in Glomeromycota. Nova Hedwigia, 100(1–2), 225–238.

Błaszkowski J, Jobim K, Niezgoda P, Meller E. et al. 2021 – New Glomeromycotan Taxa, Dominikia glomerocarpica sp. nov. and Epigeocarpum crypticum gen. nov. et sp. nov. From Brazil, and Silvaspora gen. nov. From New Caledonia. Frontiers in Microbiology, 12, 704.

Oehl F, Sanchez-Castro I, de Sousa NMF, Silva G. et al. 2015 – Dominikia bernensis, a new arbuscular mycorrhizal fungus from a swiss no-till farming site, and D. aurea, D. compressa and D. indica, three new combinations in Dominikia. Nova Hedwigia, 101(1/2), 65–76.

Yu F, Goto BT, Magurno F, Błaszkowski J. et al. 2022 – Glomus chinense and Dominikia gansuensis, two new Glomeraceae species of arbuscular mycorrhizal fungi from high altitude in the Tibetan Plateau. Mycological Progress, 21(2), 32.

 

Entry by

Lu L, Center for Yunnan Plateau Biological Resources Protection and Utilization, College of Biological Resource and Food Engineering, Qujing Normal University, Qujing, Yunnan 655011, China; Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand; School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand.

 

(Edited by Saowaluck Tibpromma, Samaneh Chaharmiri-Dokhaharani, & Achala R. Rathnayaka)

 

Published online 3 December 2024

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