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Bipolaris maydis

Scientific Name
Bipolaris maydis
Scientific Author
(Y. Nisik. & C. Miyake) Shoemaker
Taxonomy
(Ascomycota: Dothideomycetes: Pleosporales: Pleosporaceae)
Pest Status
1 NZ - Non-regulated species
Status
NZ - Exotic
Reliability
High
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Diagnostic Images

Conidia
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Caption
Bipolaris maydis conidia
Source
E. McKenzie Landcare Research
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Diagnostic Images (9)
Diagnostic Notes
Disease

Southern leaf blight of maize. Leaf spots at first elliptical, becoming rectangular, up to 2.5 cm long, restricted by leaf veins to 2–6 mm in width, tan coloured with a brown margin, coalescing.

Morphology

Conidiophores arising in small groups, often from dark brown to black stromata, mid to dark brown, up to 700 µm long, 5–10 µm thick, with one or more distinct conidial scars. Conidia single, distinctly curved, fusiform, 70–160 µm long, 15–20 µm wide, pale to golden brown, smooth, 5–11-distoseptate, distinct basal scar 3–4.5 µm wide.

Ascomata rarely reported from field, but have been obtained by pairing compatible isolates in culture.

More Information
Specimen Contact
Eric McKenzie
Author
McKenzie, E.
Created
11/07/2013 12:21 AEST
Last Updated
19/03/2014 22:51 AEST
Citation
McKenzie, E. (2013) Bipolaris maydis (Bipolaris maydis) Updated on 3/19/2014 10:51:09 PM Available online: PaDIL - http://www.padil.gov.au.
Image Use
Free for use under the Creative Commons Attribution 3.0 Australia License

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