Homoploid hybridization adds clarity to the origins of octoploid strawberries.

ABSTRACT: The evolutionary histories of many polyploid plant species are difficult to resolve due to a complex interplay of hybridization, incomplete lineage sorting, and missing diploid progenitors. In the case of octoploid strawberry with four subgenomes designated ABCD, the identities of the diploid progenitors for subgenomes C and D have been subject to much debate. By integrating new sequencing data from North American diploids with reticulate phylogeny and admixture analyses, we uncovered introgression from an extinct or unsampled species in the clade of Fragaria viridis, Fragaria nipponica, and Fragaria nilgerrensis into the donor of subgenome A of octoploid Fragaria prior to its divergence from F. vesca subsp. bracteata. We also detected an introgres

SUBMITTER: Fan Z 

PROVIDER: S-EPMC12207424 | biostudies-literature | 2025 Jun

REPOSITORIES: biostudies-literature