Originally published as Genetics Published Articles Ahead of Print on September 1, 2006.

Genetics, Vol. 174, 1057-1061, October 2006, Copyright © 2006
doi:10.1534/genetics.106.060467

Precise Centromere Mapping Using a Combination of Repeat Junction Markers and Chromatin Immunoprecipitation–Polymerase Chain Reaction

* Department of Plant Biology and {dagger} Department of Genetics, University of Georgia, Athens, Georgia 30602, {ddagger} Department of Molecular Biosciences and Bioengineering, University of Hawaii, Honolulu, Hawaii 96822 and § Department of Horticulture, University of Wisconsin, Madison, Wisconsin 53706

2 Corresponding author: Department of Plant Biology, Miller Plant Sciences Bldg., University of Georgia, Athens, GA 30602. 
E-mail: kelly{at}plantbio.uga.edu

Centromeres are difficult to map even in species where genetic resolution is excellent. Here we show that junctions between repeats provide reliable single-copy markers for recombinant inbred mapping within centromeres and pericentromeric heterochromatin. Repeat junction mapping was combined with anti-CENH3-mediated ChIP to provide a definitive map position for maize centromere 8.




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