Plastome evolution at the edge: structural rearrangements, IR expansion, and gene flux in Hypericaceae (Malpighiales).

ABSTRACT:

Background

The evolutionary history of the Hypericaceae Juss. family remains poorly understood despite previous phylogenomic efforts. A prior study on Hypericum ascyron revealed exceptional plastome rearrangements and gene loss events, prompting questions about whether such genomic patterns are unique to Hypericum or reflect broader evolutionary trends within the family.

Results

To explore plastome evolution across Hypericaceae, we sequenced 12 complete chloroplast genomes representing seven genera from the three major tribes, Hypericeae, Vismieae, and Cratoxyleae, and two outgroup plastomes from Clusiaceae. Comparative analysis of 281 Malpighiales plastomes showed that Hypericaceae differ significantly in total plastome size and SSC region length, while LSC and IR regions s

SUBMITTER: Claude SJ 

PROVIDER: S-EPMC12870916 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature