Pleosporales » Phaeosphaeriaceae » Septoriella

Septoriella neodactylidis

Septoriella neodactylidis Y. Marín & Crous, in Marin-Felix, Hernández-Restrepo, Iturrieta-González, García, Gené, Groenewald, Cai, Chen, Quaedvlieg, Schumacher, Taylor, Ambers, Bonthond, Edwards, Krueger-Hadfield, Luangsa-ard, Morton & Moslemi, Stud. Mycol. 94: 110 (2019)

Basionym: Allophaeosphaeria dactylidis Wanas., Camporesi, E.B.G. Jones & K.D. Hyde, in Liu et al., Fungal Diversity 72: 137 (2015) (Liu et al. 2015)

Index Fungorum number: IF 829707; Facesofungi number: FoF 00384

The description taken from Liu et al. (2015)

Saprobic on dead herbaceous branches. Sexual morph: Ascomata 100–150 μm high × 100–175 μm diam. (x̄ = 142.2 × 131.2 μm, n = 10), solitary, scattered, immersed to erumpent, globose or subglobose, dark brown to black, coriaceous, ostiolate. Ostiole 30–70 μm high 20–30 μm diam. (x̄ = 48.7 × 23.8 μm, n = 10), blackish-brown, smooth, ostiolar canal filled with dark brown cells. Peridium 10–15 μm wide at the base, 8–12 μm wide at the sides, composed with reddish to dark brown cells of textura angularis. Hamathecium comprising numerous, 1.5–2.5 μm (n = 30) wide, filamentous, branched, septate, pseudoparaphyses. Asci 60–90 × 10–20 μm (x̄ = 69 × 14.6 μm, n = 40), 8-spored, bitunicate, fissitunicate, cylindricclavate to clavate, pedicellate, thick-walled at the apex, with minute ocular chamber. Ascospores 15–20 × 5–8 μm (x̄ = 18.2 × 6.3 μm, n = 50), overlapping 1–2-seriate, ellipsoidal to subfusiform, upper part wider than the lower part, muriform, 3–5 transversely septate, with 1–3 vertical septa, constricted at the central septum, initially hyaline, becoming yellowish-brown at maturity, ends remaining lighter and cone-shaped, with rounded ends, without a mucilaginous sheath. Asexual morph: Undetermined.

Material examined: ITALY, Province of Forlì-Cesena [FC], Corniolo, dead upright stems of Dactylis glomerata (Poaceae), 12 July 2013, E. Camporesi (MFLU 14-0754, holotype); ex-type living culture, MFLUCC 13-0618.

GenBank: ITS: KP744432, LSU: KP744473, SSU: KP753946.

Notes: see Marin-Felix et al. (2019)

 

Figure x. Septoriella neodactylidis (Allophaeosphaeria dactylidisfrom Liu et al. (2015). a Ascomata on host substrate. b Section of ascoma. c Close up of ostiole. d Peridium. e Pseudoparaphyses. f–i Asci. j–l Ascospores. m Ascospores stained in Indian ink. Scale bars: a=200 μm, b=50 μm, c, d=20μm, e–i=10 μm, j–m= 5μm

 

References:

 

Liu JK, Hyde KD, Jones EG, Ariyawansa HA et al. 2015 – Fungal diversity notes 1–110: taxonomic and phylogenetic contributions to fungal species. Fungal diversity 72, 1–97.

Marin-Felix Y, Hernández-Restrepo M, Iturrieta-González I, García D et al. 2019 – Genera of phytopathogenic fungi: GOPHY 3. Studies in mycology 94, 1–24.

 

Last update: 10 March 2021

 

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