Just read this, https://www.pnas.org/doi/10.1073/pnas.2317240121, that extraordinary high rate of mtDNA evolution in some plants is associated low mtDNA copy number. Lower Ne is the obvious explanation - but the authors instead put fwd homologous recombination, because it is less effective in low copy number environments. More complicated explanation, with no direct evidence? Thoughts?
#genomics #mtDNA #mitochondria #plastid #plants