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Athelia rolfsii

Scientific Name
Athelia rolfsii
Scientific Author
(Curzi) C.C. Tu & Kimbr.
Taxonomy
(Basidiomycota: Agaricomycetes: Atheliales: Atheliaceae)
Pest Status
1 NZ - Non-regulated species
Status
NZ - Exotic
Reliability
High
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Diagnostic Images

Sclerotia
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Caption
Athelia rolfsii sclerotia formed on surface of agar
Source
Jason Brock University of Georgia
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Diagnostic Images (15)
Diagnostic Notes
Disease

Stem rot, foot rot, crown rot, blight. Infection commonly commences at about soil level and extends a few cm above and below. Infected plants often wilt and drop their leaves. Under moist conditions fans of white mycelium spread up the stem and over any organic matter on the soil near the stem. Reddish brown sclerotia, 1–2 mm diam. may be seen amongst superficial mycelium on the base of the plant or on plant tissues immediately below soil level.

Morphology

Hyphae may have clamp connections. Sclerotia nearly globose, 0.5–1.5 mm diam., single or in groups, smooth, initially whitish, becoming yellowish white, when dry dark brown or reddish brown and appearing like small seeds of mustard. On agar plates the sclerotia often form at the edge of the plate.

More Information
Specimen Contact
Eric McKenzie
Author
McKenzie, E.
Created
11/07/2013 10:24 AEST
Last Updated
19/03/2014 22:04 AEST
Citation
McKenzie, E. (2013) Athelia rolfsii (Athelia rolfsii) Updated on 3/19/2014 10:04:35 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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