Characterization of polygenic resistance to powdery mildew in tomato at cytological, biochemical and gene expression level.

ABSTRACT: Extensive research in the area of plant innate immunity has increased considerably our understanding of the molecular mechanisms associated with resistance controlled by a dominant resistance gene. In contrast, little is known about the molecular basis underlying the resistance conferred by quantitative trait loci (QTLs). In this study, using the interaction of tomato (Solanum lycopersicum) with Oidium neolycopersici, we compared the cytological, biochemical and molecular mechanisms involved in both monogenic and polygenic resistances conferred by a dominant gene (Ol-1) and three QTLs (Ol-qtls), respectively. Our results showed that the three Ol-qtls jointly confer a very high level of broad-spectrum resistance and that the resistance is associated with both the hypersensitive response and

SUBMITTER: Li C 

PROVIDER: S-EPMC6638637 | biostudies-literature | 2012 Feb

REPOSITORIES: biostudies-literature