Plasmopara halstedii
| Plasmopara halstedii | |
|---|---|
| Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Chromalveolata |
| Phylum: | Heterokontophyta |
| Class: | Oomycetes |
| Subclass: | Incertae sedis |
| Order: | Peronosporales |
| Family: | Peronosporaceae |
| Genus: | Plasmopara |
| Species: | P. halstedii |
| Binomial name | |
| Plasmopara halstedii (Farl.) Berl. & De Toni, (1888) | |
| Synonyms | |
|
Peronospora halstedii Farl., (1882) | |
Plasmopara halstedii is a plant pathogen infecting sunflowers. Plasmopara halstedii originated in North America.
Plasmopara halstedii oospores produce a thin wall which are resistant structures, sexually produced that are essential for its continuation. After entering an area, the eradication of the pathogen is difficult due to the formation of oospores, which can remain viable in soil for many years.[1]
Detection
Systemically infected sunflower plants may have some degree of stunting and the leaves show pale green or chlorotic mottling which spreads along the main veins and over the lamella.
External links
References
- ↑ Maria Villas Bôas de Campos Leite, Regina; Assis Henning, Ademir; Rosa Rodrigues, Silvia; Fernandes de Oliveira, Marcelo (December 2007). "Detecção e variabilidade de Plasmopara halstedii no Brasil e avaliação da resistência de genótipos de girassol ao míldio" [Detection and variability of Plasmopara halstedii in Brazil and resistance of sunflower genotypes to downy mildew]. Summa Phytopathologica. ISSN 0100-5405.
Further reading
- Sakr, Nachaat (December 2012). "Diversity in Plasmopara halstedii, the Causal Agent of Sunflower Downy Mildew". Cryptogamie, Mycologie 33 (4): 463–480. doi:10.7872/crym.v33.iss4.2012.463.
- "PM 7/85 (2) Plasmopara halstedii". EPPO Bulletin 44 (3): 350–359. 2014. doi:10.1111/epp.12160. --diagnostic protocol