The PPR-DYW proteins are required for RNA editing of rps14, cox1 and nad5 transcripts in Physcomitrella patens mitochondria

► Two DYW subclass PPR proteins were identified as RNA editing factors in moss mitochondria. ► PpPPR_78 was involved in RNA editing at the rps14-C137 and cox1-C755 sites. ► PpPPR_79 was required for RNA editing at the nad5-C598 site. ► DYW subclass PPR proteins are general site-specific factors for RNA editing.