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Evolutionary Rate Variation in Organelle Genomes: The Role of Mutational Processes

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Organelle Genetics

Abstract

With the ever-expanding availability of DNA sequence data, it has become increasingly clear that genes and genomes can evolve at very different rates. Organelle genomes, in particular, provide dramatic examples of variation in nucleotide substitution rates across species, which in many cases reflect variation in underlying mutational processes. In this chapter, we review the evidence for variation in organelle mutation rates and discuss the evolutionary causes and consequences of this variation. We suggest that the existence of mutation rate variation across diverse phylogenetic scales makes organelle genomes an ideal system for investigating the interplay between mutational processes and the evolution of genome architecture.

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Acknowledgements

Our research on mutation rates and the evolution of organelle genomes has been supported by the NSF (DEB-0808452 and MCB-1022128).

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  1. Department of Biology, University of Virginia, Charlottesville, VA, 22904, USA

    Daniel B. Sloan & Douglas R. Taylor

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  1. Daniel B. Sloan
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Correspondence to Daniel B. Sloan .

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  1. , Departments of Biology and Biochemistry, Mount Allison University, York Street 63B, Sackville, E4L 1G7, New Brunswick, Canada

    Charles E. Bullerwell

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Sloan, D.B., Taylor, D.R. (2012). Evolutionary Rate Variation in Organelle Genomes: The Role of Mutational Processes. In: Bullerwell, C. (eds) Organelle Genetics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-22380-8_6

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