Substantial structural variation and repetitive DNA content contribute to intraspecific plastid genome evolution.

ABSTRACT:

Background

Plastids have highly conserved genomes in most land plants. However, in several families, plastid genomes exhibit high rates of nucleotide substitution and structural rearrangements among species. This elevated rate of evolution has been posited to lead to increased rates of plastid-nuclear incompatibilities (PNI), potentially acting as a driver of speciation. However, the extent to which plastid structural variation exists within a species is unknown. This study investigates whether plastid structural variation, observed at the interspecific level in Campanulaceae, also occurs within Campanula americana, a species with strong intraspecific PNI. We assembled multiple plastid genomes from three lineages of C. americana that exhibit varying levels of PNI when crossed. We t

SUBMITTER: Lopez-Caamal A 

PROVIDER: S-EPMC11971791 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature