Accumulation of Large Lineage-Specific Repeats Coincides with Sequence Acceleration and Structural Rearrangement in Plantago Plastomes.

ABSTRACT: Repeats can mediate rearrangements and recombination in plant mitochondrial genomes and plastid genomes. While repeat accumulations are linked to heightened evolutionary rates and complex structures in specific lineages, debates persist regarding the extent of their influence on sequence and structural evolution. In this study, 75 Plantago plastomes were analyzed to investigate the relationships between repeats, nucleotide substitution rates, and structural variations. Extensive repeat accumulations were associated with significant rearrangements and inversions in the large inverted repeats (IRs), suggesting that repeats contribute to rearrangement hotspots. Repeats caused infrequent recombination that potentially led to substoichiometric shifting, supported by long-read sequencing. Repeat

SUBMITTER: Wang J 

PROVIDER: S-EPMC11354287 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature