Fungalpedia – Note 532, Golubkovia 

 

Golubkovia S.Y. Kondr., Kärnefelt, Elix, A. Thell & Hur

Citation when using this data: Tibpromma et al. 2024 (in prep.) – Fungalpedia, Rock-inhabiting fungi.

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

Classification: Teloschistaceae, Teloschistales, Lecanoromycetidae, Lecanoromycetes, Pezizomycotina, Ascomycota, Fungi

Based on phylogenies of mutil-gene (ITS, LSU, and mtSSU) sequence analyses, Kondratyuk et al. (2014) proposed Golubkovia as a monotypic genus within the subfamily Xanthorioideae in Teloschistaceae and Teloschistales in Lecanoromycetes with the type species Golubkovia trachyphylla. In contrast, previous morphological analysis have shown that it is polyphyletic. Initially, this species was described as Placodium elegans var. trachyphyllum, which is widely distributed on rocks in arid continental conditions of North America and Asia (Wetmore & Kärnefelt 1998, Kondratyuk et al. 2004, Elvebakk and Øvstedal 2009). Golubkovia is characterized by thallus lobate, yellow-orange, and cortical scleroplectenchymatous attached to the substrate by the thalline medulla. Apothecia primarily consists of biatorine; with a dark orange disc and appropriate edge, true exciple prosoplectenchymatous; 8-spored asci, and polarilocular ascospores. Conidia are bacilliform to narrowly bacilliform. Thallus and apothecia K+ purple; constituents: anthraquinones of the parietin chemosyndrome (Kondratyuk et al. 2014). 

Type species: Golubkovia trachyphylla (Tuck.) S.Y. Kondr., Kärnefelt, Elix, A. Thell, J. Kim, M.H. Jeong, N.N. Yu, A.S. Kondr. & Hur

Other accepted species: Species Fungorum – search Golubkovia

 

References

Elvebakk A, Øvstedal DO. 2009 – Caloplaca trachyphylla new to Europe from higharctic steppes of Svalbard. Graphis Scripta 21(2), 61–64.

Kondratyuk S, Kärnefelt I, Thell A, Elix J et al. 2014 – A revised taxonomy for the subfamily Caloplacoideae (Teloschistaceae, Ascomycota) based on molecular phylogeny. Acta Botanica Hungarica 56(1-2), 141–178.

Kondratyuk SY, Khodosovtsev AY, Makarova II, Oxner AN. 2004 – Fuscideaceae, Teloschistaceae. In: Andreev, M. P. and Roms, E. G. (eds): Handbook of the lichens of Russia 9. Nauka, Sankt-Peterburg 339.

Tuckerman E. 1882 – A synopsis of the North American lichens. 1, 1–261.

Wetmore CM, Kärnefelt EI. 1998 – The lobate and subfruticose species of Caloplaca in north and central America. Bryologist 101(2), 230–255.

 

Entry by

Lu W, 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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