Fungalpedia – Note 468, Kamienskia 

 

Kamienskia 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 with mycorrhizal structures and phylogenetic analyses, the new genus Kamienskia was introduced to accommodate Glomus bistratum and G. perpusillum by Błaszkowski et al. (2014), named as K. bistrata (type species) and K. perpusilla. A third new species, K. divaricata, was introduced by Błaszkowski et al. (2016). However, Corazon-Guivin et al. (2019) transferred K. divaricata and K. perpusilla to Microkamienskia, as they formed an independent branch with the type species M. peruviana based on phylogenetic analyses of the partial SSU, ITS, and LSU rDNA sequences. Kamienskia and Microkamienskia species can be recognized by their small hyaline spores and open pore channels in the subtending hyphae at and close to the spore bases. They can be easily distinguished by their position in the phylogenetic tree and spore size (Błaszkowski et al. 2009, 2016, Corazon-Guivin et al. 2019). Presently, the genus only includes the type species K. bistrata and is characterized by hypogeous and/or intraradical spores, produced in loose to compact clusters, with hyaline and small spores, globose, spore-walled with two permanent, smooth layers, of which one may stain in Melzer’s reagent. The structural laminate layer is one or two layers. Spore subtending hypha cylindrical to funnel-shaped with open pores. Forming vesicular-arbuscular mycorrhizae stained dark with trypan blue (Błaszkowski et al. 2014).

Type species: Kamienskia bistrata (Błaszk., D. Redecker, Koegel, Symanczik, Oehl & Kovács) Błaszk., Chwat & Kovács

Other accepted species: Species Fungorum – search Kamienskia

Figure 1 – Morphology of Kamienskia bistrata. a, b One and two spore-walled layers and subtending hyphal wall layers. c Spores and spore wall layers. Scale bars: a–c = 10 μm. Redrawn from Blaszkowski et al. (2009).

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.

Blaszkowski J, Kovács GM, Balázs T. 2009 – Glomus perpusillum, a new arbuscular mycorrhizal fungus. – Mycologia 101, 247–255.

Błaszkowski J, Chwat G, Góralska A. 2016 – Dominikia lithuanica and Kamienskia divaricata: new species in the Glomeromycota. Botany, 94(12), 1075–1085.

Corazon-Guivin MA, Cerna-Mendoza A, Guerrero-Abad JC, Vallejos-Tapullima A. et al. 2019 – Microkamienskia gen. nov. and Microkamienskia peruviana, a new arbuscular mycorrhizal fungus from Western Amazonia. Nova Hedwigia, 109(3–4), 355–368.

 

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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