Pleosporales » Amniculicolaceae » Murispora

Murispora fagicola

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

Index Fungorum number: IF551556; Facesoffungi number: FoF01104

 

Saprobic on decaying submerged wood in freshwater habitats. Sexual morph: Ascomata 180–350 × 160–315 μm (x̄ = 263 × 252 μm, n = 10), solitary to gregarious, semi-immersed to immersed, globose to subglobose, dark brown to black, substrate stained purple, fused to the host tissue, ostiolate. Ostiole 65–130 μm high (x̄ = 85.7 μm, n = 5), crestlike, central, papillate, dark brown to black, and occasionally with purple, opening to exterior through bark surface. Peridium 15–30 μm wide, comprising 3–4 layers of dark brown cells textura angularis. Hamathecium comprising 1.5–2 μm wide, filiform, branched, septate, cellular pseudoparaphyses. Asci 166–247 × 16–22 μm (x̄ = 184 × 16.8 μm, n = 30), bitunicate, fissitunicate, cylindric-clavate, short pedicellate, with a minute ocular chamber. Ascospores 27–31 × 11–13 μm (x̄ = 30.3 × 11.4 μm, n = 30), overlapping, 1–2-seriate, oval to ellipsoidal, with narrow ends, muriform, with 1–2 longitudinal septa in all cells except end cells, constricted at septa, hyaline when young, becoming dark brown at maturity, surrounded by a thin, distinct mucilaginous sheath. Asexual morph: Undetermined.

 

Specimen examined: CHINA, Tibet, saprobic on decaying wood submerged in a freshwater river, May 2017, S.M. Tang, S-1290 (MFLU 19–0991), living culture, MFLUCC 19–0256.

 

Notes: Murispora fagicola was introduced by Wanasinghe et al. (2015), which was collected from terrestrial habitats in Italy. In this study, our specimen was collected from freshwater habitat in Tibet, China. Morphologically, the new isolate of Murispora fagicola (MFLUCC 19–0256) is similar to the holotype of M. fagicola (MFLUCC 13–0600). However, the size of asci between these two strains MFLUCC 19–0256 and MFLUCC 13–0600 are different. Asci of MFLUCC 19–0256 are larger than MFLUCC 13–0600. We suspect it is due to the different habitats. In the phylogenetic analyses, the new isolate M. fagicola (MFLUCC 19–0256) clustered with M. fagicola (MFLUCC 13–0600) with high bootstrap support (100% ML and 1.00 BYPP) and the ITS regions of these two M. fagicola strains (MFLUCC 13–0600 and MFLUCC 19–0256) differ by only five base pairs (1.06%). Therefore, we identified our isolate as a new record for China based on both morphological characters and phylogenetic results.

 

References:

Bao D.F., Wanasinghe D.N., Luo Z.L., Mortimer P.E., Kumar V., Su H.Y. and Hyde K.D. (2019). Murispora aquatica sp. nov. and Murispora fagicola, a new record from freshwater habitat in China. Phytotaxa, 416(1): 1–13. https://doi.org/10.11646/phytotaxa.416.1.1

Wanasinghe D.N., Jones E.B.G., Camporesi E., Mortimer P.E., Xu J., Bahkali A.H. & Hyde K.D. (2015) The genus Murispora. Cryptogamie Mycologie 36: 419–448. https://doi.org/10.7872/crym/v36.iss4.2015.419

 

 

Fig 1. Murispora fagicola (MFLU 19–0991). a–c. Ascomata on wood, d. Section of ascoma, e. Peridium, f, g Ostiole, h Pseudoparaphyses, i–l. Asci, m–p. Ascospores, q. Ascospore in India Ink, with thin sheath. Scale bars: d = 100 μm, e–g = 50 μm, h = 10 μm, i, j = 40 μm, k, l = 45 μm, m–p = 20 μm, q = 25 μm. (Photo grabbed from Bao et al. 2019)

 

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