The evolutionary ecology of cytonuclear interactions in angiosperms

摘要: Interactions between cytoplasmic and nuclear genomes have significant evolutionary consequences. In angiosperms, the most common cytonuclear interaction is mitochondrial genes that disrupt pollen production (cytoplasmic male sterility, CMS) restore it (nuclear fertility restorers, Rf). The outcome of CMS/Rf interactions can depend on whether Rf alleles negative pleiotropic effects fitness. Although these fitness costs are often considered to be independent ecological context, we argue should context dependent. Thus, measuring cost restoration across a range environments could help explain geographic phylogenetic variation in distribution interactions.