Genomic analyses elucidate S-locus evolution in response to intra-specific losses of distyly in Primula vulgaris.

ABSTRACT: Distyly, a floral dimorphism that promotes outcrossing, is controlled by a hemizygous genomic region known as the S-locus. Disruptions of genes within the S-locus are responsible for the loss of distyly and the emergence of homostyly, a floral monomorphism that favors selfing. Using whole-genome resequencing data of distylous and homostylous individuals from populations of Primula vulgaris and leveraging high-quality reference genomes of Primula we tested, for the first time, predictions about the evolutionary consequences of transitions to selfing on S-genes. Our results reveal a previously undetected structural rearrangement in CYPᵀ associated with the shift to homostyly and confirm previously reported, homostyle-specific, loss-of-function mutati

SUBMITTER: Mora-Carrera E 

PROVIDER: S-EPMC10955462 | biostudies-literature | 2024 Mar

REPOSITORIES: biostudies-literature