Amphisphaeriales » Pestalotiopsidaceae » Neopestalotiopsis

Neopestalotiopsis elaeidis

Neopestalotiopsis elaeidis

Konta & K.D. Hyde (2023)

 

Classification:Ascomycota-Pezizomycotina-Sordariomycetes-Xylariomycetidae-Amphisphaeriales-Pestalotiopsidaceae-Neopestalotiopsis

 

Host species: Elaeis guineensis (Konta et al. 2023)

 

Holotype: MFLU 15-1466 (Konta et al. 2023)

 

Known distribution: Songkhla, Thailand

 

IF Number: IF559678     Mycobank Number: 559678     FOF Number:

 

Description

Saprobic on dead leaves of Elaeis guineensis. Sexual morph: Undetermined. Asexual morph: Conidiomata 100–140 × 180–250 µm (x̅ = 120 × 215 µm, n = 10), acervuli, sub-globose to lenticular, visible as black spots, or black dome-shape, raised, solitary to gregarious, uniloculate. Conidiomata walls 5–10 µm (x̅ = 9 µm, n = 20) wide, thick-walled, comprising several cell layers of dark brown, pseudoparenchymatous cells of textura angularis. Conidiophores reduced to conidiogenous cells. Conidiogenous cells enteroblastic, discrete, simple, short, filiform. Conidia 10–20 × 3–7 µm (x̅ = 16 × 5.5 µm, n = 20), fusiform to ellipsoid, straight to slightly curved, 4-septate; basal cell conic, hyaline, thin and smooth-walled, 2.4–4.2 µm (x̅ = 3.3 µm) long, brown, verruculose; second cell from base brown, 2.5–4.4 µm (x̅ = 3.5 µm) long; third cell brown, 2.8–4.2 µm (x̅ = 3.5 µm) long; fourth cell darker brown, 2.4–5 µm (x̅ = 3.8 µm) long; apical cell 2.3–4.2 µm (x̅ = 3.2 µm) long, hyaline, cylindric to subcylindric; apical appendages 10–20 µm long (x̅ = 12 µm), (mostly 3); basal appendage present (1 or rarely absent), filiform 2–6 µm (x̅ = 3.5 µm). Appressoria irregular, hyaline, rough-walled, 3.4–4.6 × 3.4–4.6 μm (x̅ = 3.9 × 4.1 μm).

 

Culture conditions: Colonies on MEA. Colonies from above; white, circular, mycelia medium dense, flat or raised, with filiform margin, fluffy, with black spot of fruiting bodies. Colonies from below, same as above.

 

 

Neopestalotiopsis elaeidis (MFLU 15-1466, holotype, MFLU 15-2334, isotype). (A) Host substrate. (B) Close-up of conidioma (top view). (C) Close-up of conidioma (side view). (D, E) Vertical section of conidioma. (F–K) Conidiogenous cells with conidia. (L–R) Conidia. (S) Germinated conidium of MFLUCC 15-0735. (T) Germinated conidium with appressorium (pointed with red arrow) of MFLUCC 15-0801. (U) Appressorium. (V) Colonies on MEA of MFLUCC 15-0735. (W) Colonies on MEA of MFLUCC 15-0801. Scale bars B, C = 200 μm, D = 50 μm, E, F, S, T = 20 μm, G–R = 10 μm, U = 3 μm.

 

Reference

Konta, S; Tibpromma, S; Karunarathna, SC; Samarakoon, MC; Steven, LS; Mapook, A; Boonmee, S; Senwanna, C; Balasuriya, A; Eungwanichayapant, PD; Hyde, KD. (2023) Morphology and multigene phylogeny reveal ten novel taxa in Ascomycota from terrestrial palm substrates (Arecaceae) in Thailand. Mycosphere. 14(1):107–152

 

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