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Leveillula taurica

Scientific Name
Leveillula taurica
Scientific Author
(Lév.) G. Arnaud
Taxonomy
(Ascomycota: Leotiomycetes: Erysiphales: Erysiphaceae)
Pest Status
1 NZ - Non-regulated species
Status
NZ - Exotic
Reliability
High
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Diagnostic Images

In Life
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Caption
Leveillula taurica symptoms on Lycopersicon esculentum
Source
Denis Persley & Tony Cooke Department of Primary Industries and Fisheries, Queensland, Australia
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Diagnostic Images (5)
Diagnostic Notes
Disease

Powdery mildew of peppers. White growth of mycelium and conidia form colonies on underside of leaves, distorting the leaves to some extent. Sometimes somewhat restricted by main leaf veins. Corresponding upper surface may show some discolouration. Unlike other powdery mildews, little superficial mycelium is formed and conidiophores grow out through stomata, mostly on under surface of leaves.

Morphology

Colonies on both surfaces of leaves although mostly on under surface, white or becoming dull yellow in places. Conidiophores unbranched, hyaline. Conidia borne singly, hyaline, non-septate, of two distinct shapes; first formed conidia lanceolate, usually pointed towards the apex, 50–80 × (9–)12–16(–20) µm, length/width ratio 3.5–5.5; later-formed conidia ellipsoid to cylindric, (55–)50–75(–80) × 11–16(–20) µm.

More Information
Specimen Contact
Eric McKenzie
Author
McKenzie, E.
Created
15/07/2013 01:07 AEST
Last Updated
10/04/2014 02:37 AEST
Citation
McKenzie, E. (2013) Leveillula taurica (Leveillula taurica) Updated on 4/10/2014 2:37:29 AM 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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