ReFernment

ReFernment annotates RNA editing sites in plastid genomes to identify and correct apparent nonsense mutations and support accurate gene annotation in taxa such as ferns and hornworts.

Key Features:

• Implementation: Implemented as an R package for analysis of plastid (plastome) sequences.
• Automated identification: Automates identification of RNA editing sites that often appear as apparent nonsense mutations in plastid genomes.
• Annotation: Produces annotations of RNA editing sites within plastome sequence data.
• Accuracy constraint: Avoids producing false positives provided there are no sequencing or assembly errors.
• Scalability: Applicable to large datasets of plastome sequences and taxa with high levels of RNA editing, including ferns and hornworts.

Scientific Applications:

• Plastome annotation: Annotation and correction of apparent nonsense mutations in plastid genomes when complementary DNA (cDNA) is unavailable.
• Comparative RNA editing studies: Characterization of RNA editing prevalence and patterns across taxa, notably ferns and hornworts.
• High-throughput plastome projects: Automated processing of large plastome sequence datasets to reduce manual annotation workload.

Methodology:

Uses computational algorithms to identify and annotate RNA editing sites manifested as apparent nonsense mutations in plastid genomes, implemented as an R package, with accuracy dependent on the absence of sequencing or assembly errors.