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Magnaporthiopsis agrostidis - An E-monograph of the Fungal Order Magnaporthales: Taxonomy, Molecular Phylogeny, and Biogeography

Magnaporthiopsis agrostidis

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Magnaporthiopsis agrostidis P. Wong, Khemmuk & R.G. Shivas
MycoBank: MB814222.

Asexual state phialophora-like. On PDA, hyphae branched, septate, hyaline to dark brown, smooth, 1–4 µm diam. Conidiophores micronematous, simple, branched, brown. Conidiogenous cells phialidic, terminal or intercalary, cylindrical to lageniform, straight or curved, brown to light brown, 5–20 × 1.5–3 µm, with a cylindrical, refractive collarette, 3 × 1.5 µm. Conidia aggregated in slimy heads, lunate, allantoid to fusiform, straight to curved, hyaline, smooth, aseptate, 4–6 × 1 µm. Sexual state unknown.

Colonies on PDA 7.5 cm diam after 7 days at 25 °C in dark; aerial mycelium moderately abundant, grey to olivaceous brown, forming dark grey to dark brown crust-like mycelial aggregations on surface with age; reverse dark grey to olivaceous brown, paler at margin (Description from Wong et al., 2015).

Typification: Holotype BRIP59300 (PW13010). Ex-holotype culture BRIP59300 (PW13010).

Gene sequences: MF178145 (18S), KT364753 (ITS), KT364754 (28S), MF178161 (MCM7), KT364755 (RPB1), KT364756 (TEF1).

Hosts/substrates: On roots of Agrostis stolonifera (Poaceae).

Distribution: Australia.

Notes: This species is associated with patch disease of Agrostis stolonifera (creeping bentgrass) (Wong et al., 2015).

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.