Whole-genome sequencing bulked segregant analysis uncovered FW7, a Fusarium wilt resistance gene masked by epistasis in octoploid strawberry.

ABSTRACT: Fusarium wilt, a vascular disease of strawberry (Fragaria ×$\times$ ananassa) caused by the soilborne fungal pathogen Fusarium oxysporum f. sp. fragariae, has emerged over the past 20 years as a leading cause of severe plant wilt and death in California and many other parts of the world. We previously described several sources of resistance to race 1 of the pathogen; showed that resistance was conferred by dominant resistance genes (R-genes) on chromosomes 2B (FW1, FW2, and FW5), 1A (FW3), and 6B (FW4); and identified a cultivar (Earliglow) that was hypothesized to be a source of novel R-genes. Earliglow S1${\mathrm{S}_{1}}$ progeny segregated 15 resistant:1 susceptible ( χ2=0.03;p=0.87$\chi ^2 = 0.03; p = 0.87$ ), the Mendelian distribution expected when the phenotypes are caused by unlin

SUBMITTER: Vachev MV 

PROVIDER: S-EPMC12541573 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature