The Amount of RNA Editing Sites in Liverwort Organellar Genes Is Correlated with GC Content and Nuclear PPR Protein Diversity

RNA editing occurs in the organellar mRNAs of all land plants but the marchantioid liverworts, making liverworts a perfect group for studying the evolution of RNA editing. Here, we profiled the RNA editing of 42 exemplars spanning the ordinal phylogenetic diversity of liverworts, and screened for th...

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Published in:Genome biology and evolution 2019-11, Vol.11 (11), p.3233-3239
Main Authors: Dong, Shanshan, Zhao, Chaoxian, Zhang, Shouzhou, Wu, Hong, Mu, Weixue, Wei, Tong, Li, Na, Wan, Tao, Liu, Huan, Cui, Jie, Zhu, Ruiliang, Goffinet, Bernard, Liu, Yang
Format: Article
Language:English
Subjects:
Base Composition
Genome Report
Hepatophyta - genetics
Organelles - genetics
Phylogeny
Plant Proteins - genetics
RNA Editing - genetics
Tandem Repeat Sequences - genetics
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Summary:RNA editing occurs in the organellar mRNAs of all land plants but the marchantioid liverworts, making liverworts a perfect group for studying the evolution of RNA editing. Here, we profiled the RNA editing of 42 exemplars spanning the ordinal phylogenetic diversity of liverworts, and screened for the nuclear-encoded pentatricopeptide repeat (PPR) proteins in the transcriptome assemblies of these taxa. We identified 7,428 RNA editing sites in 128 organellar genes from 31 non-marchantioid liverwort species, and characterized 25,059 PPR protein sequences. The abundance of organellar RNA editing sites varies greatly among liverwort lineages, genes, and codon positions, and shows strong positive correlations with the GC content of protein-coding genes, and the diversity of the PLS class of nuclear PPR proteins.
ISSN:1759-6653
1759-6653
DOI:10.1093/gbe/evz232