Peronospora belbahrii

Peronospora belbahrii, common name basil downy mildew, is a pathogenic water mold that affects basil species. Rapidly spread by windborn spores, the pathogen was first discovered in Italy in 2003.[1] In 2007 it was detected in Florida and by 2008 had already spread to outdoor and greenhouse basil crops in the United States and Canada.[2] Infections are untreatable and usually lead to complete crop loss, although multiple mildew-resistant cultivars have been developed and are now available for commercial and home growers.[3] Leaves from affected plants are unmarketable due to their unappetizing appearance, but remain safe for human consumption.[4]

Peronospora belbahrii
Basil plant in Hawaii infected with Peronospora belbahrii
Scientific classification Edit this classification
Kingdom: Chromista
Phylum: Oomycota
Order: Peronosporales
Family: Peronosporaceae
Genus: Peronospora
Species:
P. belbahrii
Binomial name
Peronospora belbahrii
Thines

References

  1. Garibaldi, A.; Minuto, A.; Minuto, G.; Gullino, M. L. (2004). "First Report of Downy Mildew on Basil (Ocimum basilicum) in Italy". Plant Disease. 88 (3): 312. doi:10.1094/PDIS.2004.88.3.312A. PMID 30812374. Retrieved 29 September 2023.
  2. "Cornell Vegetables". Retrieved 29 September 2023.
  3. "Maryland Grows Blog". 21 February 2020. Retrieved 29 September 2023.
  4. "Downy Mildew on Basil in the Home Garden". University of Maryland Extension. Retrieved 29 September 2023.
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