Botryosphaeriales » Botryosphaeriaceae » Dothiorella

Dothiorella iranica

Dothiorella iranica Abdollahz., Zare & A.J.L. Phillips, in Abdollahzadeh, Javadi, Zare & Phillips, Persoonia 32: 4 (2014)

Index Fungorum number: IF 803988; Facesofungi number: FoF 02202

Saprobic on Paliurus bark. Asexual morph: Conidiomata 280–305 μm high, 275–310 μm diam. (x̄ = 290 × 295 μm, n = 5), acervular, solitary to gregarious, superficial to immersed, unilocular, globose to subglobose, dark brown to black. Conidiomata wall 30–40 μm wide, composed of brown, thin or thick-walled cells of textura angularis, apex and base thicker than middle, with setae. Conidiophores 7–9 × 2–3 μm (x̄ = 8 × 2.5 μm, n = 10), cylindrical, filiform, septate, branched, hyaline. Conidiogenous cells 9–17 × 4–6 μm, (x̄ = 12 × 5 μm, n = 20), holoblastic, annellidic, integrated or discrete, hyaline, determinate. Conidia 20–25 × 8–11 μm (x̄ = 22 × 9 μm, n = 30), cylindrical, oval or ellipsoid, 1-septate, hyaline when immature, brown to dark brown when mature. Sexual morph Undetermined.

Culture characteristics: Ascospores germinating on MEA within 36 h. Colonies growing on MEA attaining 2 cm diam. in 1 week at 28 °C. Mycelium superficial, felted, gummy, dark brown to black. Asexual structures not formed in culture.

Material examined: ITALY, Province of Forlı`-Cesena, Monte Pallareto—Meldola, on Paliurus bark (Rhamnaceae), 1 January 2012, Erio Camporesi IT 962 (MFLU 15-1402, KUN, new host record), living culture, MFLUCC 15-0656, KUNCC


Notes: Phylogenetically this species resides in a distinct subclade in Dothiorella with high support and closely related to D. ulmacea. The conidia of D. iranica are longer than those of all other Dothiorella species except D. casuarini J. de Wet et al. (27 × 11 μm). Our isolate is morphologically and phylogenetically similar to Dothiorella iranica (strain IRAN 1587C), but associated with a different host. Dothiorella iranica (type) was recorded on Olea europaea L. (Oleaceae) and our collection was found on Paliurus (Rhamnaceae) bark. Host distribution is poorly known in this genus, but according to Dissanayake et al. (2016), Dothiorella species may be host specific, although Dothiorella iberica A.J.L. Phillips et al., D. sarmentorum (Fr.) A.J.L. Phillips et al. and D. symphoricarposicola W.J. Li occur on many host families and orders (Hyde et al. 2016).