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Originally published as Genetics Published Articles Ahead of Print on July 29, 2007.

Genetics, Vol. 177, 1217-1220, October 2007, Copyright © 2007
doi:10.1534/genetics.107.078709

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Evolutionary History and Positional Shift of a Rice Centromere

Jianxin Ma*, Rod A. Wing{dagger}, Jeffrey L. Bennetzen{ddagger} and Scott A. Jackson*,1

* Department of Agronomy, Purdue University, West Lafayette, Indiana 47907, {dagger} Arizona Genomics Institute, University of Arizona, Tucson, Arizona 85721 and {ddagger} Department of Genetics, University of Georgia, Athens, Georgia 30602

1 Corresponding author: Department of Agronomy, Purdue University, 915 W. State St., West Lafayette, IN 47907.
E-mail: sjackson{at}purdue.edu

Rice centromere 8 was previously proposed to be an "immature" centromere that recently arose from a genic region. Our comparative genomics analysis indicates that Cen8 was formed at its current location at least 7–9 million years ago and was physically shifted by a more recent inversion of a segment spanning centromeric and pericentromeric regions.






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