Pleosporales » Amniculicolaceae

Murispora

Murispora Y. Zhang ter, J. Fourn. & K.D. Hyde

Index Fungorum number: IF 515472

Saprobic on submerged wood or dead stems or branches of plant materials. Sexual morph: Ascomata scattered to gregarious, immersed, uniloculate, lenticular, slightly protruding at the apex, opening through a small rounded pore, with ostiolate papilla, stain substrate purple. Peridium thin, composed of a few layers cells of textura angularis, thicker at the apex with pseudoparenchymatous cells. Pseudoparaphyses cellular, embedded in mucilage. Asci 8-spored, bitunicate, fissitunicate, cylindro-clavate, short pedicellate. with a small ocular chamber. Ascospores biseriate to uniseriate near the base, fusoid with narrowly rounded ends, slightly curved, golden yellow or hyaline, turning brown when senescent, muriform, with one, rarely two longitudinal septa in all cells except end cells, 7–9-transversely septate, basically symmetrical, smooth or finely verruculose, surrounded by a wide mucilaginous sheath (Zhang et al. 2009, 2012). Asexual morph: Coelomycetous. Pycnidia solitary, mainly immersed, uniloculate, dark brown to black. Peridium reddish brown cells of textura angularis, with inner most layer thin, hyaline. Conidiophores reduced to conidiogenous cells. Conidiogenous cells phialidic, determinate, hyaline, smooth, formed from the inner most layer of pycnidial wall. Conidia ellipsoidal, hyaline, aseptate, smooth-walled, thin-walled (Wanasinghe et al. 2015).

Notes: Zhang et al. (2009c) introduced Murispora based on Pleospora rubicunda Niessl which clustered in a robust clade with Amniculicola species in Amniculicolaceae. Wanasinghe et al. (2015) introduced another six species to Murispora from terrestrial habitats and they found the asexual morph of M. hawksworthii Wanas. et al. from single ascospore isolates. Murispora species stain substrate purple (Zhang et al. 2009c, 2012b; Wanas. et al. 2015; Bao et al. 2019d) and this character should be a common feature to the genus. Four freshwater species have been reported in Murispora, three of which were collected from China

Type species: Murispora rubicunda (Niessl) Y. Zhang ter, J. Fourn. & K.D. Hyde, in Zhang, Schoch, Fournier, Crous, Gruyter, Woudenberg, Hirayama, Tanaka, Pointing, Spatafora & Hyde, Stud. Mycol. 64: 96 (2009)

Key to freshwater Murispora species (Dong et al. 2020)

1. Ascospores > 31 μm long …………………………………………2

1. Ascospores < 31 μm long …………………………………………3

2. Ascospores more than 10 transverse septa …………………...M. cicognanii

2. Ascospores 7–9 transverse septa ……………………………...M. rubicunda

3. Ascospores 21–25 × 8–10 μm …………………………………M. aquatica

3. Ascospores 27–31 × 11–13 μm ………………………………..M. fagicola

Freshwater species

Murispora aquatica D.F. Bao, Z.L. Luo, K.D. Hyde & H.Y. Su

Murispora cicognanii Wanas., Camporesi, E.B.G. Jones & K.D. Hyde

Murispora fagicola Wanas., Camporesi, E.B.G. Jones & K.D. Hyde

Murispora rubicunda (Niessl) Yin. Zhang, J. Fourn. & K.D. Hyde

References:

Bao DF, Wanasinghe DN, Luo ZL, Mortimer PE et al. (2019) Murispora aquatica sp. nov. and Murispora fagicola, a new record from freshwater habitat in China. Phytotaxa 416:1-13

Dong, W., Wang, B., Hyde, K.D., McKenzie, E.H.C., Bhat, D.J et al. (2020) Freshwater Dothideomycetes. Fungal Diversity

Wanasinghe DN, Jones EG, Camporesi E, Mortimer PE et al. (2015) The Genus Murispora. Cryptogamie, Mycologie 36:419-448

Zhang Y, Crous PW, Schoch CL, Hyde KD (2012) Pleosporales. Fungal Diversity 53:1-221

Zhang Y, Schoch CL, Fournier J, Crous PW et al. (2009) Multi-locus phylogeny of Pleosporales: a taxonomic, ecological and evolutionary re-evaluation. Studies in Mycology 64:85-102

 

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