Location: Sunflower and Plant Biology ResearchTitle: Centromere synteny among Brachypodium, wheat, and rice Author
Submitted to: Book Chapter
Publication Type: Book / Chapter
Publication Acceptance Date: 9/12/2012
Publication Date: 4/15/2013
Citation: Qi, L., Friebe, B., Gill, B.B. 2013. Centromere synteny among Brachypodium, wheat, and rice. In: Jiang, J., and Birchler J. (eds.) Plant Centromere Biology. John Wiley & Sons, Inc., Hoboken, NJ. Chapter 5, pp 57-66. Interpretive Summary:
Technical Abstract: Rice, wheat and Brachypodium are plant genetic models with variable genome complexity and basic chromosome numbers, representing two subfamilies of the Poaceae. Centromeres are prominent chromosome landmarks, but their fate during this convoluted chromosome evolution has been more difficult to determine. In grasses, the discovery of active genes in the functional domains of several rice centromeres immediately suggested that conserved centromeric gene sequences (COS-C) may be used to study comparative homologies of centromeric regions across the grass species. In wheat, breaks within functional centromeres are documented and telocentric chromosomes provide an opportunity for the mapping of the centromeres. Exploiting wheat aneuploid stocks and COS-C, we have determined the centromeric region homologies of wheat-rice and wheat-Brachypodium-rice and these studies, along with some recent information on the structure of Brachypodium centromeres, are reviewed here.