Amphisphaeriales » Pestalotiopsidaceae » Neopestalotiopsis

Neopestalotiopsis formicidarum

Neopestalotiopsis formicidarum

Maharachch., K.D. Hyde & Crous (2014)

 

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

 

Host species: Dypsis leptocheilos (Xiong et al. 2022)

 

Paratype: ZHKU 22–0010 (Xiong et al. 2022)

 

Known distribution: Cuba; Ghana; Guangdong, China

 

IF Number: IF821673   Mycobank Number: 821673       FOF Number: FoF10804

 

Description

Conidiomata erumpent or superficial, oval or hemispherical, irregular, scattered or aggregate, with the stromata surface slightly convex or slightly flat. Conidiophores reduced to conidiogenous cells, smooth, hyaline. Conidiogenous cells 5.5 × 3.5 µm, discrete, thin-walled, hyaline, lageniform, sub-cylindrical or irregular, proliferating 1–3 times percurrently. Conidia 20–25 × 7–8 µm (x̅ ± SD = 22 ± 1.9 × 7.5 ± 0.5 µm, n = 40),fusiform to ellipsoidal, 4-septate, straight to slightly curved; basal cell 3–6 µm long obconic with a truncate base, hyaline, minutely verruculose and thin-walled; three median cells 13–16 µm long (x̅ ± SD = 14.4 ± 1 µm), doliiform, smooth, concolourous, olivaceous, septa darker than the rest of the cell (second cell from the base 4–6.5 µm; third cell 4–6 µm; fourth cell 4.5–6 µm); apical cell 3–4.5 µm long, hyaline, conical to subcylindrical, smooth, thin-walled; apical appendages 16–26 µm long, (x̅ ± SD = 21.2 ± 2.7 µm), 1–3 (seldom 1), tubular, arising from the apical crest, unbranched, filiform; basal appendage, 2.5–6 µm long single, tubular, unbranched, centric.

 

Culture conditions: Colonies on PDA reaching 30–40 mm diam after 7 d at 25 °C, edge undulate, whitish to pale honey-coloured, with moderate aerial mycelium on the surface, with black, gregarious conidiomata; reverse similar in colour.

 

 

Neopestalotiopsis formicidarum (ZHKU 22–0010) a, b Conidiomata on the rotting axis of Dypsis leptocheilos. c, d Peridium. e Conidiogenous cells giving rise to conidia. f–h Conidia. i Pycnidium. j The top view of a two-week-old colony on PDA. k The bottom view of a two-week-old colony on PDA. Scale bars: c = 50 µm; d = 15 µm; e = 20 µm; f–h = 15 µm.

 

 

Reference

Maharachchikumbura, S.S.N.; Hyde, K.D.; Groenewald, J.Z.; Xu, J.; Crous, P.W. Pestalotiopsis revisited. Stud Mycol 2014, 79, 121–186.

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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