Continuous infiltration and evolutionary trajectory of nuclear organelle DNA in <i>Oryza</i>.

ABSTRACT: Transfer of chloroplast or mitochondrial DNA into the nuclear genome is a common phenomenon in many species. However, little is known about the evolutionary fate and mechanism of transfer of organellar DNA sequences in higher plants. We observe abundant insertions of organelle DNA into the nuclear genomes of 22 genome assemblies across seven Oryza species and further categorize nuclear organelle DNA (NORG) into 3406 orthologous groups. Analysis of the whole-genome resequencing data from 3458 O. sativa, O. glaberrima, and O. barthii accessions indicate that NORGs have intra- and inter-population variability owing to sequence loss and transposon insertion during evolution. Our results also suggest that NORGs have been continuously produced during the evolution of

SUBMITTER: Gong C 

PROVIDER: S-EPMC12129026 | biostudies-literature | 2025 Jun

REPOSITORIES: biostudies-literature