Amphisphaeriales » Pestalotiopsidaceae » Pestalotiopsis

Pestalotiopsis sabal

Pestalotiopsis sabal

Y.R. Xiong & Manawas (2022)

 

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

 

Host species: Sabal mexicana (Xiong et al. 2022)

 

Holotype: ZHKU 22–0035 (Xiong et al. 2022)

 

Known distribution: Guangdong, China

 

IF Number: IF559618     Mycobank Number: 559618     FOF Number: FoF10806

 

Description

Conidiomata 490–560 µm diam, pycnidial (on PDA), globose to clavate, solitary or aggregate, black, semi-immersed, ostiole in the center; releasing conidia in a black, slimy, globose, glistening mass. Conidiophores reduce to conidiogenous cells, smooth, hyaline. Conidiogenous cells 4.5 × 3 µm, discrete, smooth-walled, hyaline, subcylindrical. Conidia 17.5–23 × 5.5–7 µm (x̅ ± SD = 20 ± 1.7 × 6.5 ± 0.6 µm, n = 40), fusiform to ellipsoid, 4-septate, slightly constricted at septa, straight to slightly curved; basal cell 3–5.5 µm long, conic with a truncate base, hyaline, sparsely verruculose and thin- or smooth-walled; three median cells 11–14 µm long, x̅ ± SD = 12 ± 1 µm, doliiform, sparsely verruculose, versicolored, olivaceous, septa darker than the rest of the cell (second cell from the base 3–5 µm; third cell 3.5–5 µm; fourth cell 3.5–5 µm); apical cell 3–5 µm long, hyaline, sparsely verruculose, conical to subcylindrical, smooth-walled; apical appendages 7–20 µm long, x̅  ± SD = 14 ± 3.4 µm, 1–3 (seldom 1), tubular, arising from the apical crest, unbranched, filiform; basal appendage 3–6 µm long, 1–2, tubular, unbranched, centric.

 

Culture conditions: Colonies on PDA attaining 5 cm diam after 7 d at 25 ˚C, circular, rugose, curled, rotiform, rough, forming abundant pycnidia near the center, white, undulate; reverse buff to cream.

 

 

Pestalotiopsis sabal (ZHKU 22–0035) (a) The top view of a two-week-old colony on PDA. (b) The bottom view of a two-week-old colony on PDA. (c) Pycnidium. (d) Conidiogenous cells giving rise to conidia. (e–g) Conidia. – Bars: d = 30 µm; e–g = 15 µm..

 

Reference

Xiong YR, Manawasinghe IS, Maharachchikumbura SSN, Lu L, Dong ZY, Xiang MM, Xu B 2022 – Pestalotioid species associated with palm species from Sothern China. Current Research in Environmental & Applied Mycology (Journal of Fungal Biology) 12(1), 285–321, Doi 10.5943/cream/12/1/18

 

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