Discovery of new races of Bremia lactucae on Lactuca sativa in Kagawa Prefecture, Japan and cross-infection of L. sativa and wild L. serriola by B. lactucae

Key Points

• New races of Bremia lactucae were discovered infecting Lactuca sativa in Kagawa Prefecture, Japan.
• Cross-infection occurs between domesticated lettuce and wild lettuce species, L. serriola, raising concerns.
• Findings indicate potential increased pathogen diversity impacting lettuce crops in the region.
• Exploration of pathogen interactions underlines the need for effective management strategies.