Display Settings:


Send to:

Choose Destination
We are sorry, but NCBI web applications do not support your browser and may not function properly. More information
Genome Biol Evol. 2011;3:723-36. doi: 10.1093/gbe/evr042. Epub 2011 May 21.

Structural and content diversity of mitochondrial genome in beet: a comparative genomic analysis.

Author information

  • 1University of Lille Nord de France, F-59000 Lille, France.


Despite their monophyletic origin, mitochondrial (mt) genomes of plants and animals have developed contrasted evolutionary paths over time. Animal mt genomes are generally small, compact, and exhibit high mutation rates, whereas plant mt genomes exhibit low mutation rates, little compactness, larger sizes, and highly rearranged structures. We present the (nearly) whole sequences of five new mt genomes in the Beta genus: four from Beta vulgaris and one from B. macrocarpa, a sister species belonging to the same Beta section. We pooled our results with two previously sequenced genomes of B. vulgaris and studied genome diversity at the species level with an emphasis on cytoplasmic male-sterilizing (CMS) genomes. We showed that, contrary to what was previously assumed, all three CMS genomes belong to a single sterile lineage. In addition, the CMSs seem to have undergone an acceleration of the rates of substitution and rearrangement. This study suggests that male sterility emergence might have been favored by faster rates of evolution, unless CMS itself caused faster evolution.

[PubMed - indexed for MEDLINE]
Free PMC Article

Images from this publication.See all images (2)Free text

F IG . 1.—
F IG . 2.—
PubMed Commons home

PubMed Commons

How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for HighWire Icon for PubMed Central
    Loading ...
    Write to the Help Desk