High Conservation of Translation-Enabling RNA Editing Sites in Hyper-editing Ferns Implies They Are Not Selectively Neutral.

ABSTRACT: RNA editing is essential for processing transcripts in plant chloroplasts and mitochondria. Levels of RNA editing vary between lineages, but some hornworts, lycophytes, and ferns have an extraordinary abundance of RNA editing. A feature of "hyper-editing" species is the prevalence of RNA editing events that promote translation by creating start codons or removing stop codons via C-to-U or U-to-C editing, respectively. These "translation-enabling" RNA editing events may play roles in regulating organelle gene expression. To investigate the importance of translation-enabling RNA editing events, we generated DNA and RNA sequence libraries for four Salviniales water ferns: Azolla rubra, Azolla pinnata, Marsilea mutica, and Salvinia molesta. We assembled chloroplast genomes, mitochondrial genes

SUBMITTER: Kwok van der Giezen FM 

PROVIDER: S-EPMC12548569 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature