Rickettsial DNA and a trans-splicing rRNA group I intron in the unorthodox mitogenome of the fern Haplopteris ensiformis

Abstract

Assembly and analysis of the mitochondrial and plastid genomes of the leptosporangiate shoestring fern, Haplopteris ensiformis, indicates horizontal gene transfer events from Rickettiales bacteria and high amounts of C-to-U and U-to-C RNA editing.