Peronospora viciae infects leaves, pods, and seedlings systemically. Although oospores and mycelia may be present in seed coats, seed-to-seedling transmission hasn’t been confirmed. It is soilborne and wind dispersed.
2 Known Hosts
Lens culinaris
lentil
No
No references found indicating seed is a pathway. Downy mildew of lentil is caused by Peronospora viciae f.spp. faba.
2025-06-06 08:55:39
Pisum sativum
pea
No
PEROVI-3, PEROVI-5, PEROVI-6, PEROVI-9, PEROVI-10
Oospores of Peronospora viciae can be present on the seed coat, but successful seed transmission has not been demonstrated. One reference (PEROVI-5) did not find any seed-borne infection in 7 seed samples tested. In peas is it soilborne and wind disperesed.
Yes
Grow out, Bioassay
Tests used in research only. These tests have not been validated or standardized.
PEROVI-6, PEROVI-7, PEROVI-8
Seed treatments are often suggested for protection against Peronospora viciae that may be in field debris.Â
A quality systems approach in production of the seeds with crop inspections, careful selection of healthy fruits and seed conditioning/cleaning should be used to ensure seed quality and reduce unwanted seed contaminants.
Mence MJ, Pegg GF, 1971. The biology of Peronospora viciae on pea: factors affecting the susceptibility of plants to local infection and systemic colonization. Annals of Applied Biology, 67:297-308.
Amey, R. C., Schleicher, T., Slinn, J., Lewis, M., Macdonald, H., Neill, S. J., & Spencer-Phillips, P. T. N. (2008). Proteomic analysis of a compatible interaction between Pisum sativum (pea) and the downy mildew pathogen Peronospora viciae. The Downy Mildews-Genetics, Molecular Biology and Control, 41-55.
Marr, A., Casonato, S., & Jones, E. (2021). Latent detection of downy mildew (Peronospora pisi) in bioassays against Pisum sativum. Pathogens, 10(10), 1312.
Richard E. Falloona, George B. Follasb, Ruth C. Butlera, David S. Gouldena. 2000 Resistance in Peronospora viciae to phenylamide fungicides: reduced efficacy of seed treatments of pea (Pisum sativum) and assessment of alternatives, Crop Protection 19:313–325