Fungalpedia – Note 20Marjia
Citation: Bhunjun et al. 2023 – Fungalpedia, genera described in 2018, Mycosphere (in press)
Marjia Wanas., Gafforov & K.D. Hyde
Marjia was established by Wanasinghe et al. (2018) with the generic type M. tianschanica plus M. uzbekistanica, and placed it in Melanommataceae. Only the sexual morph is reported for Marjia and characterized by superficial, broadly oblong, coriaceous ascomata, with a thick peridium composed of dark brown to black cells of textura angularis, filamentous and branched pseudoparaphyses with septa, cylindrical to cylindric-clavate asci with long pedicels, and ellipsoidal to subfusiform, muriformly septate, brown ascospores (Wanasinghe et al. 2018, Hongsanan et al. 2020). Marjia species are similar to the members of several genera in Melanommataceae, viz. Gemmamyces, Melanocucurbitaria, Muriformistrickeria, Uzbekistanica, Pseudostrickeria and Praetumpfia based on the presence of muriform ascospores (Hongsanan et al. 2020). The taxonomic placement of this genus in Melanommataceae was confirmed by morphology and multi-gene phylogenetic analysis (LSU, SSU, ITS and tef1-α) (Wanasinghe et al. 2018). Marjia species were found as saprobes on woody substrates of Cerasus tianschanica and Rosa sp. (Rosaceae), respectively from terrestrial habitats in Uzbekistan (Wanasinghe et al. 2018).
Type species: Marjia tianshanica Wanas., Gafforov & K.D. Hyde
Other accepted species: Marjia uzbekistanica Wanas., Gafforov & K.D. Hyde
Figure 1. Marjia tianschanica (TASM 6120, holotype). a-b. Ascomata on the host substrate. c. Section of ascoma. d. Peridium. e. Pseudoparaphyses. f–h. Asci. i–l. Ascospores. Scale bars: a = 1 mm, b = 200 µm, c = 50 µm, d, f-h = 20 µm, e, i-l = 10 µm. Photo credits: Dhanushka N. Wanasinghe.
Wanasinghe, D.N., Phukhamsakda, C., Hyde, K.D. et al. 2018 – Fungal diversity notes 709–839: taxonomic and phylogenetic contributions to fungal taxa with an emphasis on fungi on Rosaceae. Fungal Diversity 89, 1–236.
Hongsanan S, Hyde KD, Phookamsak R, Wanasinghe DN, McKenzie EH, Sarma VV, Boonmee S, Lücking R, Bhat DJ, Liu NG, Tennakoon DS. 2020b – Refined families of dothideomycetes: dothideomycetidae and pleosporomycetidae. Mycosphere 11, 1553–2107.
S.N. Wijesinghe, Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand
(Edited by Chitrabhanu S. Bhunjun and Kevin D. Hyde)