Structure and evolution of the Forsythieae genome elucidated by chromosome-level genome comparison of Abeliophyllum distichum and Forsythia ovata (Oleaceae).

ABSTRACT: Abeliophyllum distichum and Forsythia ovata are two closely related ornamental species of the tribe Forsythieae (Oleaceae) native to Korea. Here we report their genomic characteristics, highlighting genetic differences contributing to variations in corolla coloration, genomic variations associated with heterostyly, and the reconstruction of their ancestral karyotypes. Genome comparison revealed that A. distichum had a more compact organization of gene space than F. ovata. Centromeres of both species were enriched in Forsythieae-specific satellite repeats, hAT-Ac and MuLE-MuDR DNA transposons, and OTA-Athila Ty3/Gypsy retrotransposons. Transcriptome analysis revealed spatially differential expression of carotenoid biosynthesis-related genes in A. distichum, with downregulation in the white

SUBMITTER: Jang H 

PROVIDER: S-EPMC11836285 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature