Pleosporales » Dictyosporiaceae » Dictyocheirospora

Dictyocheirospora xishuiensis

Dictyocheirospora xishuiensis

Y.R. Sun, Yong Wang bis & K.D. Hyde, Fungal Diversity 131: 141 (2025)

 

Classification: Ascomycota-Pezizomycotina-Dothideomycetes-Pleosporales-Dictyosporiaceae-Dictyocheirospora

 

Host species: Elaeis guineensis (Xiong et al. 2025)

 

Known distribution: China (Xiong et al. 2025)

 

IF Number: IF902591      Mycobank Number: 902591     FOF Number: FoF16420

 

Description

Saprobic on dead segment of Elaeis guineensis. Asexual morph: Hyphomycetous. Colonies on natural substrate superficial, scattered. Mycelium immersed, composed of hyaline, smooth, septate, branched hyphae. Conidiomata sporodochial, dark brown to black. Conidiophores micronematous, undifferentiated from vegetative hyphae, short. Conidiogenous cells holoblastic, integrated, terminal, pale brown, smooth-walled. Conidia 27–43 × 14–19 μm (x̅ = 37 × 17 μm, n = 25), solitary, acrogenous, cheiroid, brown, arranged in 3–5 compact rows, with rows digitate, cylindrical, inwardly curved at apex, arising from a basal cell, with each row composed of 3–7 cells, euseptate, slightly constricted at septa, smooth-walled; with (1–)2(–3) rounded to cylindrical appendages, arising from two sides of conidial rows, grow toward both ends, hyaline. Sexual morph: Not observed.

 

Culture conditions: Colonies on PDA after 2 weeks reaching 4 cm diam., at 25°C, circular, with fluffy, dense, white mycelium on the surface with entire margin; in reverse yellow in the middle and white at the margin.

Dictyocheirospora xishuiensis (MHZU 23-0151, new host record). a, b Sporodochia on the substrate. c–k Conidia. l Germinating conidium. m The front of culture on PDA at 25℃ and the reverse of culture on PDA at 25℃. Scale bars: c–k = 10 µm.

 

Reference

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

 

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