Summary
A 712-base portion of the mitochondrial gene coxI and the corresponding portion of the coxI transcript were amplified by PCR and by RT-PCR, respectively, from the gymnosperm western red cedar. Sequence comparison of amplified coxI DNA and mRNA revealed 26 C-to-U differences that are best explained by RNA editing of the type known to occur in angiosperms. This finding suggests that mitochondrial RNA-editing of the C-to-U type arose before the divergence of gymnosperms and angiosperms and can be considered a feature common to all higher plants.
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Communication by C. S. Levings III
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Glaubitz, J.C., Carlson, J.E. RNA editing in the mitochondria of a conifer. Curr Genet 22, 163–165 (1992). https://doi.org/10.1007/BF00351477
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DOI: https://doi.org/10.1007/BF00351477