Botryosphaeriales » Botryosphaeriaceae » Dothiorella

Dothiorella sarmentorum

Dothiorella sarmentorum

(Fr.) A.J.L. Phillips, J. Luque & A. Alves, Mycologia 97: 52. (2005)

 

Classification: Ascomycota-Pezizomycotina-Dothideomycetes-Botryosphaeriales-Botryosphaeriaceae-Dothiorella

 

Host species: Livistona chinensis (Xiong et al. 2025)

 

Known distribution: worldwide (Zhang et al. 2021, Jayawardena et al. 2023, Xiong et al. 2025)

 

IF Number: IF 501403      Mycobank Number: 501403     FOF Number: FoF02148

 

Description

Saprobic on dead petiole of Livistona chinensis. Asexual morph: Conidiomata 240–260 × 270–310 μm, stromatic, erumpent, forming split-like opening on the host, solitary or scattered in small groups, immersed, uni-loculate, black, with globose to subglobose. Peridium 25–40 μm, comprising several layers; outer layers thick-walled, dark brown cells of textura angularis; inner layers of thin-walled, lightly pigmented cells. Conidiophores reduced to conidiogenous cells. Conidiogenous cells 12–16 × 3.5–6 μm (x̄ = 15 × 4.7 μm, n = 30), lining the pycnidial cavity, holoblastic, discrete, hyaline, subcylindrical, smooth, indeterminate, proliferating at the same level giving rise to periclinal thickenings. Conidia 18–23 × 9–13 μm (x̄ = 20 × 11 μm, n = 30), ellipsoid to obovoid, with a broadly rounded apex and truncate base, initially hyaline and aseptate becoming pigmented brown and 1-septate often while still attached to conidiogenous cell, brown walled, smooth-walled, slightly constricted at the septum. Sexual morph: Not observed.

Culture conditions: Colonies on PDA reaching 6 cm diam. after 2 weeks at 25°C, raised with concave edge, circular, flat, filiform, grey.

 

Dothiorella sarmentorum (MHZU 24-0512, new host record). a, b Condiomata. c Section of conidioma. d Peridium. e, f Conidiogenous cells. g–j Conidia. k Top of culture (left) on PDA at 25℃ and reverse (right) of culture on PDA . Scale bars: c = 20 µm; d–j = 10 µm.

 

Reference

Jayawardena RS, Hyde KD, Wang S et al (2023) Fungal diversity notes 1512–1610: taxonomic and phylogenetic contributions on genera and species of fungal taxa. Fungal Divers 117:1–272. https://doi.org/10.1007/s13225-022-00513-0

Xiong, Y. R., Lu, L., Mapook, A., Maharachchikumbura, S. S. N., McKenzie, E. H. C., Kevin, D. H., Manawasinghe, I. S. (2025) Fungal Safari on Palm Trees: New Discoveries from East Asia and 1990-2025 Years of Global Records [Manuscript preparation]. Fungal Diversity.

Zhang W, Groenewald JZ, Lombard L, Schumacher RK, Phillips AJ, Crous PW (2021) Evaluating species in Botryosphaeriales. Persoonia 46:63–115. https://doi.org/10.3767/persoonia.2021.46.03

 

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