Cladosporium cladosporioides

Cladosporium cladosporioides (Fresen.) G.A. de Vries, Contrib. Knowledge of the Genus Cladosporium Link ex Fries: 57 (1952)

Index Fungorum number: IF 294915; Facesofungi number: FoF 03131

            Saprotrophic on dead and aerial branches and roots of Vitis vinifera. Sexual morph: Not observed. Asexual morph: Conidiophores solitary, macronematous, arising terminally from ascending hyphae, cylindrical-oblong, 40–300 × 3–6 μm. Conidiogenous cells integrated, usually terminal, cylindrical-oblong, 40 μm long, with up to four loci crowded at the apex. Ramoconidia seceding at one of the upper, somewhat darkened septa, straight to slightly curved, cylindricaloblong, 15–50 × 3–5 μm, with up to three septa, pale olivaceous-brown, concolorous with tips of conidiophores, smooth, base 2.5–4 μm wide, unthickened or slightly thickened, sometimes slightly refractive. Conidia numerous, catenate in long branched chains, small terminal conidia subglobose, obovoid or ovoid, aseptate, intercalary conidia limoniform, ellipsoid, 5–12 × 2–3 μm (x̄ = 7 × 3, n = 40).

Culture characteristics: Colonies on PDA reach 3–5 cm diam., after 5 days at 25 °C greyolivaceous to dull green, margin regular, black, reverse black, with white feather margin.

Material examined: ITALY, Province of Forlì-Cesena, near Meldola, on dead and aerial branch of Vitis vinifera (Vitaceae), 28 January 2016, Erio Camporesi IT 2809, (MFLU 16–0514), culture: MFLUCC 17–1056.

Notes: Cladosporium cladosporioides is known as a saprotroph as well as a secondary invader on grapevine (Bensch et al. 2010). This species has been isolated as a pathogen causing fruit rots, as an endophyte and a saprotroph of Vitis sp.