Gaeumannomyces setariicola Hern.-Restr. & Crous, in Hernández-Restrepo, Groenewald, Elliott, Canning, Mcmillan & Crous, Stud. Mycol. 83: 44 (2016).
MycoBank: MB816899.
Morphological description: On MEA, mycelium consisting of septate, branched, smooth, hyaline to brown, 1.2–4 μm diam hyphae. Conidiophores simple or verticillate, often reduced to conidiogenous cells. Conidiogenous cells mono- or poly-phialidic, terminal or intercalary, hyaline, cylindrical to lageniform, straight to curved, 6.5–28.5 × 2–4 μm, with a cylindrical to funnel-shaped, refractive collarette, up to 3 μm long, 1.5–2.5 μm diam. Conidia lunate, allantoid to fusiform strong to slightly curved, tapered at the base, hyaline, 4–12 × 1–2 μm. Hyphopodia not observed (Hernández-Restrepo et al. 2016).
Culture characteristics: After 7 d at 25 °C: On PDA reaching 85 mm diam, flat, aerial mycelium scarce, light isabelline in the centre, smoke grey to the periphery, submerged mycelium darker, margin rhizoid; reverse isabelline. On MEA reaching 75 mm diam, cottony, aerial mycelium abundant, pale greenish grey, margin rhizoid; reverse fuscous in the centre, white-amber to the periphery. On OA reaching 65 mm diam, flat, aerial mycelium scarce, colourless, submerged mycelium with grey olivaceous “zones”; reverse similar (Hernández-Restrepo et al. 2016).
Specimen examined: South Africa, Limpopo province, Warmbaths (current name is Bela-Bela), isolated from Setaria italica, 1981, D.B. Scott (holotype, CBSH-22584; culture ex-type, CBS141394 = PRRI4754 = CPC26059) (Hernández-Restrepo et al. 2016).
Hosts/substrates: From Setaria italica.
References:
Hernández-Restrepo M, Groenewald JZ, Elliott ML, Canning G, McMillan VE, Crous PW. 2016. Take-all or nothing. Studies in Mycology 83:19–48.
Geographical distribution: South Africa, Limpopo.
Copyright 2022 by The American Phytopathological Society. Reproduced, by permission, from Luo, J., and Zhang, N. 2022. The Rice Blast Fungus and Allied Species: A Monograph of the Fungal Order Magnaporthales (https://my.apsnet.org/APSStore/Product-Detail.aspx?WebsiteKey=2661527A-8D44-496C-A730-8CFEB6239BE7&iProductCode=46826). American Phytopathological Society, St. Paul, MN.