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- Peronospora_destructor abstract "Peronospora destructor is a plant pathogen. It causes downy mildew on leaves of cultivated and wild Allium. Allium cepa (onion and shallot) is most often affected, while Allium schoenoprasum (chives) and Allium porrum (leek) are only occasionally affected. Downy mildew is a major disease of onion. The pathogen persists as mycelium systemically infecting onion bulbs, but is not known to be transmitted in onion seed. The pathogen can persist in the soil for several years as oospores. Systemically infected plants are dwarfed and pale green. Under moist conditions, the pathogen sporulates on the affected tissues and spreads to other plants, on the leaves and stalks of which it forms greyish-violet local lesions. Infected leaves are often entirely killed. Critical periods for infection have been determined. Infected crops yield poorly, and produce distorted bulbs. Control is by crop rotation (at least 3 years between successive onion crops), use of healthy bulbs for planting (heat treatment has been used to eliminate the pathogen from bulbs), fungicide treatment of the bulbs for planting, and fungicide sprays of the foliage if downy mildew infection is nevertheless observed.".
- Peronospora_destructor class Oomycete.
- Peronospora_destructor family Peronosporaceae.
- Peronospora_destructor genus Peronospora.
- Peronospora_destructor kingdom Chromalveolata.
- Peronospora_destructor order Peronosporales.
- Peronospora_destructor phylum Heterokont.
- Peronospora_destructor thumbnail Peronospora_destructor.JPG?width=300.
- Peronospora_destructor wikiPageExternalLink fungaldatabases.
- Peronospora_destructor wikiPageExternalLink Names.asp.
- Peronospora_destructor wikiPageID "27377596".
- Peronospora_destructor wikiPageRevisionID "590574417".
- Peronospora_destructor binomial "Peronospora destructor".
- Peronospora_destructor binomialAuthority "Caspary,".
- Peronospora_destructor classis Oomycete.
- Peronospora_destructor familia Peronosporaceae.
- Peronospora_destructor genus "Peronospora".
- Peronospora_destructor hasPhotoCollection Peronospora_destructor.
- Peronospora_destructor imageCaption "A close-up shot of downy mildew Peronospora destructor on an onion leaf.".
- Peronospora_destructor name "Peronospora destructor".
- Peronospora_destructor ordo Peronosporales.
- Peronospora_destructor phylum Heterokont.
- Peronospora_destructor regnum Chromalveolata.
- Peronospora_destructor species "P. destructor".
- Peronospora_destructor subject Category:Allium.
- Peronospora_destructor subject Category:Plant_pathogens_and_diseases.
- Peronospora_destructor subject Category:Water_moulds.
- Peronospora_destructor type Abstraction100002137.
- Peronospora_destructor type Earth114842992.
- Peronospora_destructor type Material114580897.
- Peronospora_destructor type Matter100020827.
- Peronospora_destructor type Mold114953564.
- Peronospora_destructor type Part113809207.
- Peronospora_destructor type PhysicalEntity100001930.
- Peronospora_destructor type Relation100031921.
- Peronospora_destructor type Soil114844693.
- Peronospora_destructor type Substance100019613.
- Peronospora_destructor type WaterMoulds.
- Peronospora_destructor type Species.
- Peronospora_destructor type Organism.
- Peronospora_destructor comment "Peronospora destructor is a plant pathogen. It causes downy mildew on leaves of cultivated and wild Allium. Allium cepa (onion and shallot) is most often affected, while Allium schoenoprasum (chives) and Allium porrum (leek) are only occasionally affected. Downy mildew is a major disease of onion. The pathogen persists as mycelium systemically infecting onion bulbs, but is not known to be transmitted in onion seed. The pathogen can persist in the soil for several years as oospores.".
- Peronospora_destructor label "Peronospora destructor".
- Peronospora_destructor label "Peronospora destructor".
- Peronospora_destructor sameAs Peronospora_destructor.
- Peronospora_destructor sameAs m.0by1cw9.
- Peronospora_destructor sameAs Q3900048.
- Peronospora_destructor sameAs Q3900048.
- Peronospora_destructor sameAs Peronospora_destructor.
- Peronospora_destructor wasDerivedFrom Peronospora_destructor?oldid=590574417.
- Peronospora_destructor depiction Peronospora_destructor.JPG.
- Peronospora_destructor isPrimaryTopicOf Peronospora_destructor.
- Peronospora_destructor name "Peronospora destructor".