Fig. 3.

The relative timing and extent of loss of ancestral editing sites and the nucleotide status. A: The percentages of loss of ancestral editing sites (relative to the editing status of the former nodes) are depicted at each branch. Changes over 20% are highlighted. Loss of editing in ndh genes are shown in black and that in non-ndh genes are in grey. B: Shown as the frequency of the nucleotide status for cytosines retained (black) and sites with substitutions (grey) in terrestrial and mycoheterotrophic, epiphytic (excluding C. mannii) and C. mannii orchids.