Xylariales » Xylariales incertae sedis » Haploanthostomella

Haploanthostomella elaeidis

Haploanthostomella elaeidis

Konta & K.D. Hyde (2021)

 

Classification:Ascomycota-Pezizomycotina-Sordariomycetes-Xylariomycetidae-Xylariales-Xylariales incertae sedis-Haploanthostomella

 

Host species: Elaeis guineensis (Konta et al. 2021)

 

Holotype: MFLU 20-0522 (Konta et al. 2021)

 

Known distribution: Surat Thani, Thailand

 

IF Number: IF557877     Mycobank Number: 557877     FOF Number: FoF09174

 

Description

Saprobic on dead leaves and rachis of Elaeis guineensis. Sexual morph: Ascomata 160–280 × 130–350 μm (x̄ = 220 × 240 μm, n = 20), immersed in the host epidermis, beneath a clypeus, visible as slightly raised blackened areas, dark brown to black, coriaceous, solitary or aggregated into clusters, scattered, with an ostiolar canal. Peridial wall 13–45 μm wide, thick, comprising several layers of cells, outwardly comprising dark brown cells of textura irregularis and inwardly comprising hyaline cells of textura prismatica, 7–20 μm wide. Paraphyses 1.5–4.5 μm wide, septate, hyphae-like, hyaline. Asci 50–90 × 10–15 μm (x̄ = 70 × 12 μm, n = 40), 8-spored, unitunicate, clavate to cylindric, short pedicellate, with J- apical ring. Ascospores 10–18 × 5–8 μm (x̄ = 14 × 6 μm, n = 100), uni–biseriate into the asci, unicellular, obovoid, fusoid, hyaline to light brown when immature and brown to dark brown when mature, mostly one, rarely two-guttulate, cell wall verrucose, with a mucilaginous cap at the apex. Germslit 3–6 μm length (x̄ = 5 μm, n = 50), straight, less than spore-length. Asexual morph: Not observed.

 

Culture conditions: Not available.

 

 

Haploanthostomella elaeidis (MFLU 20-0522, holotype). (A) Substrate. (B, C) Appearance of ascomata on the host surface. (D) Sections of ascomata. (E) Peridium. (F) Hamathecium. (G) Septa of paraphyses show in red arrows. (H, I–K) Asci. (L) J- apical ring in Melzer’s reagent. (M, N, P–R) Ascospores with mucilaginous cap (red arrows in M, Q, R) and germ slit (red arrows in P). (O) An ascospore with verrucose wall. Scale bars: B = 1000 μm, C = 200 μm, D = 500 μm, E, G, L = 20 μm, F, H–K = 50 μm, M–P = 10 μm, Q–R = 5 μm.

 

Reference

Konta, S; Hyde, KD; Eungwanichayapant, PD; Karunarathna, SC; Samarakoon, MC; Xu, J; Dauner, LAP; Aluthwattha, ST; Lumyong, S; Tibpromma, S. (2021) Multigene Phylogeny Reveals Haploanthostomella elaeidis gen. et sp. nov. and Familial Replacement of Endocalyx (Xylariales, Sordariomycetes, Ascomycota). Life. 11(no. 486):1–25

 

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