Insights into U‐to‐C RNA editing from the lycophyte Phylloglossum drummondii

Author:

Kwok van der Giezen Farley M.1,Viljoen Amy1,Campbell‐Clause Leni1,Dao Nhan Trong1,Colas des Francs‐Small Catherine1,Small Ian1ORCID

Affiliation:

1. ARC Centre of Excellence in Plant Energy Biology, School of Molecular Sciences The University of Western Australia Perth WA 6009 Australia

Abstract

SUMMARYThe lycophyte Phylloglossum drummondii is the sole inhabitant of its genus in the Huperzioideae group and one of a small minority of plants which perform uridine to cytidine RNA editing. We assembled the P. drummondii chloroplast and mitochondrial genomes and used RNA sequence data to build a comprehensive profile of organellar RNA editing events. In addition to many C‐to‐U editing events in both organelles, we found just four U‐to‐C editing events in the mitochondrial transcripts cob, nad1, nad5 and rpl2. These events are conserved in related lycophytes in the genera Huperzia and Phlegmariurus. De novo transcriptomes for three of these lycophytes were assembled to search for putative U‐to‐C RNA editing enzymes. Four putative U‐to‐C editing factors could be matched to the four mitochondrial U‐to‐C editing sites. Due to the unusually few numbers of U‐to‐C RNA editing sites, P. drummondii and related lycophytes are useful models for studying this poorly understood mechanism.

Funder

Australian Research Council

Publisher

Wiley

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