Abstract
Plasmopara halstedii (Farl.) Berl. & de Toni, the causal agent of sunflower downy mildew (SDM), is a soil-borne fungus found on all continents except Australia (Gulya et al., 1997). Unlike many other downy mildew diseases, which are foliar infections, the primary mode of infection in SDM is a root infection of young seedlings, which results in a systemic infection, culminating in either seedling death or an extremely stunted plant with minimal seed yield. Although foliar infections due to airborne sporangia are observed, these local lesions do not develop into systemic infections, and thus are of minimal significance.
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© 2004 Springer Science+Business Media Dordrecht
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Gulya, T.J. (2004). A Seedling Bioassay to Detect the Presence of Plasmopara Halstedii in Soil. In: Spencer-Phillips, P., Jeger, M. (eds) Advances in Downy Mildew Research — Volume 2. Developments in Plant Pathology, vol 16. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-2658-4_15
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DOI: https://doi.org/10.1007/978-1-4020-2658-4_15
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