Abstract
Gene or genome duplication events increase the amount of genetic material available to increase the genomic, and thereby phenotypic, complexity of organisms during evolution. Gene duplication and transfer events have been important to molecular evolution in all three domains of life, and may be the first step in the emergence of new gene functions. Gene transfer events have been proposed as another accelerator of evolution. The duplicated gene or genome, mainly nuclear, has been the subject of several recent reviews. In addition to the nuclear genome, organisms have organelle genomes, including mitochondrial genome. In this review, we briefly summarize gene duplication and transfer events in the plant mitochondrial genome.
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