Pan-S-locus analysis reveals insights into the origin and evolution of self-incompatibility in the orange subfamily.

ABSTRACT:

Background

Self-incompatibility is controlled by a highly polymorphic supergene complex, the S-locus, which is structurally complex, rich in repetitive sequences, and varies in length from hundreds of kilobases to tens of megabases across different plant families. Due to these challenges, the S-locus has been fully reconstructed in only a few species, limiting our understanding of its evolutionary dynamics.

Results

This study systematically explores the evolutionary mechanisms and structural characteristics of the self-incompatibility system mediated by S-RNase in the Aurantioideae (orange subfamily) of Rutaceae. We construct a pan-S-locus framework spanning 11 genera within the orange subfamily from 14 newly assembled genomes from representative accessions and the analysis

SUBMITTER: Hu J 

PROVIDER: S-EPMC12506349 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature