Highly Recombinogenic Regions at Seed Storage Protein Loci on Chromosome 1DS of Aegilops tauschii, the D-Genome Donor of Wheat

Corresponding author: Evans S. Lagudah, CSIRO Plant Industry, GPO Box 1600, Canberra ACT 2601, Australia., e.lagudah{at}pi.csiro.au (E-mail)

Communicating editor: J. A. BIRCHLER

A detailed RFLP map was constructed of the distal end of the short arm of chromosome 1D of Aegilops tauschii, the diploid D-genome donor species of hexaploid wheat. Ae. tauschii was used to overcome some of the limitations commonly associated with molecular studies of wheat such as low levels of DNA polymorphism. Detection of multiple loci by most RFLP probes suggests that gene duplication events have occurred throughout this chromosomal region. Large DNA fragments isolated from a BAC library of Ae. tauschii were used to determine the relationship between physical and genetic distance at seed storage protein loci located at the distal end of chromosome 1DS. Highly recombinogenic regions were identified where the ratio of physical to genetic distance was estimated to be <20 kb/cM. These results are discussed in relation to the genome-wide estimate of the relationship between physical and genetic distance.

This article has been cited by other articles:

				V. Kalavacharla, K. Hossain, Y. Gu, O. Riera-Lizarazu, M. I. Vales, S. Bhamidimarri, J. L. Gonzalez-Hernandez, S. S. Maan, and S. F. Kianian High-Resolution Radiation Hybrid Map of Wheat Chromosome 1D Genetics, June 1, 2006; 173(2): 1089 - 1099. [Abstract] [Full Text] [PDF]

				J. D. Faris, J. P. Fellers, S. A. Brooks, and B. S. Gill A Bacterial Artificial Chromosome Contig Spanning the Major Domestication Locus Q in Wheat and Identification of a Candidate Gene Genetics, May 1, 2003; 164(1): 311 - 321. [Abstract] [Full Text] [PDF]

				E. D. Akhunov, A. W. Goodyear, S. Geng, L.-L. Qi, B. Echalier, B. S. Gill, Miftahudin, J. P. Gustafson, G. Lazo, S. Chao, et al. The Organization and Rate of Evolution of Wheat Genomes Are Correlated With Recombination Rates Along Chromosome Arms Genome Res., May 1, 2003; 13(5): 753 - 763. [Abstract] [Full Text] [PDF]

				T. Wicker, N. Yahiaoui, R. Guyot, E. Schlagenhauf, Z.-D. Liu, J. Dubcovsky, and B. Keller Rapid Genome Divergence at Orthologous Low Molecular Weight Glutenin Loci of the A and Am Genomes of Wheat PLANT CELL, May 1, 2003; 15(5): 1186 - 1197. [Abstract] [Full Text]

				W. Li and B. S. Gill The Colinearity of the Sh2/A1 Orthologous Region in Rice, Sorghum and Maize Is Interrupted and Accompanied by Genome Expansion in the Triticeae Genetics, March 1, 2002; 160(3): 1153 - 1162. [Abstract] [Full Text] [PDF]

				D. Sandhu, J. A. Champoux, S. N. Bondareva, and K. S. Gill Identification and Physical Localization of Useful Genes and Markers to a Major Gene-Rich Region on Wheat Group 1S Chromosomes Genetics, April 1, 2001; 157(4): 1735 - 1747. [Abstract] [Full Text]

				N. Stein, C. Feuillet, T. Wicker, E. Schlagenhauf, and B. Keller Subgenome chromosome walking in wheat: A 450-kb physical contig in Triticum monococcum L. spans the Lr10 resistance locus in hexaploid wheat (Triticum aestivum L.) PNAS, November 8, 2000; (2000) 230361597. [Abstract] [Full Text]

				N. Stein, C. Feuillet, T. Wicker, E. Schlagenhauf, and B. Keller Subgenome chromosome walking in wheat: A 450-kb physical contig in Triticum monococcum L. spans the Lr10 resistance locus in hexaploid wheat (Triticum aestivum L.) PNAS, November 21, 2000; 97(24): 13436 - 13441. [Abstract] [Full Text] [PDF]