A catalogue of recombination coldspots in interspecific tomato hybrids.

ABSTRACT: Increasing natural resistance and resilience in plants is key for ensuring food security within a changing climate. Breeders improve these traits by crossing cultivars with their wild relatives and introgressing specific alleles through meiotic recombination. However, some genomic regions are devoid of recombination especially in crosses between divergent genomes, limiting the combinations of desirable alleles. Here, we used pooled-pollen sequencing to build a map of recombinant and non-recombinant regions between tomato and five wild relatives commonly used for introgressive tomato breeding. We detected hybrid-specific recombination coldspots that underscore the role of structural variations in modifying recombination patterns and maintaining genetic linkage in interspecific crosses. Cros

SUBMITTER: Fuentes RR 

PROVIDER: S-EPMC11244794 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature