Additional file 2: Figure S1. of Reverse U-to-C editing exceeds C-to-U RNA editing in some ferns – a monilophyte-wide comparison of chloroplast and mitochondrial RNA editing suggests independent evolution of the two processes in both organelles

Comparison of mitochondrial RNA editing sites between monilophytes and lycophytes. The experimentally confirmed editing sites in the genes atp1 and nad5 of the monilophyte species Polypodium cambricum, Dicksonia antarctica and Azolla filiculoides are compared with the respective editing sites deposited in NCBI from the lycophytes Isoetes engelmannii and Selaginella moellendorffii. Only 16 edits are shared between all five taxa. Most of the edits from the two lycophytes are unique to either one species or are shared between the two lycophytes and are therefore most likely independent gains. For the basal lycophyte Phlegmariurus squarrosus only 14 edits (all of the C-to-U type) are found in our cDNA analysis. Three of these edits are shared between all three lycophytes and six between Phlegmariurus and Isoetes. (DOCX 127 kb)