- THIS ARTICLE
- Full Text
- Full Text (PDF)
- Alert me when this article is cited
- Alert me if a correction is posted
- SERVICES
- Similar articles in this journal
- Similar articles in PubMed
- Alert me to new issues of the journal
- Download to citation manager
- Reprints & Permissions
- GOOGLE SCHOLAR
- Articles by Koo, D.-H.
- Articles by Jiang, J.
- PUBMED
- PubMed Citation
- Articles by Koo, D.-H.
- Articles by Jiang, J.
Genetics, Vol. 179, 1119-1123, June 2008, Copyright © 2008
doi:10.1534/genetics.108.087726
Extraordinary Tertiary Constrictions of Tripsacum dactyloides Chromosomes: Implications for Karyotype Evolution of Polyploids Driven by Segmental Chromosome Losses
Dal-Hoe Koo and Jiming Jiang1
Department of Horticulture, University of Wisconsin, Madison, Wisconsin 53706
1 Corresponding author: Department of Horticulture, 1575 Linden Dr., University of Wisconsin, Madison, WI 53706.
E-mail: jjiang1{at}wisc.edu
Tripsacum dactyloides (2n = 2x = 36) is an ancient tetraploid species. Here we report that T. dactyloides chromosomes contain an extraordinary tertiary constriction, which causes a radical and distant separation of a terminal segment from the chromosome. The relationships between extraordinary tertiary constriction and segmental chromosome loss as well as karyotype evolution of polyploid species are discussed.