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United States Department of Agriculture

Agricultural Research Service

Research Project: SUNFLOWER GERMPLASM DIVERSIFICATION AND CHARACTERIZATION UTILIZING WILD SUNFLOWER SPECIES, CYTOGENETICS, AND APPLIED GENOMICS

Location: Sunflower Research

Title: Centromere synteny among Brachypodium, wheat, and rice

Authors
item QI, LILI
item Friebe, Bernd -
item Gill, Bikram -

Submitted to: Book Chapter
Publication Type: Book / Chapter
Publication Acceptance Date: September 12, 2012
Publication Date: April 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.

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.

Last Modified: 9/10/2014
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