To be or not to be a nonhost species: A case study of the Leptosphaeria maculans and Brassica carinata interaction.

ABSTRACT: Leptosphaeria maculans is one of the major fungal pathogens on oilseed rape (Brassica napus), causing stem canker disease. The closely related Brassica species B. nigra, B. juncea, and B. carinata display extreme resistance toward stem canker. In this study, we demonstrate the nonhost status of B. carinata toward L. maculans in France through field experiments and inoculations performed in controlled conditions. A few isolates moderately adapted to B. carinata in controlled conditions were recovered in the field on B. nigra leaves, allowing us to investigate the unusual B. carinata-L. maculans interactions using molecular, macroscopic, and microscopic analyses. A cross between a L. maculans isolate adapted to B. napus and an isolate moderately adapted to B. carinata allowed the generation,

SUBMITTER: Noah JM 

PROVIDER: S-EPMC11603210 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature