Paux, E., Sourdille, P., Salse, J., Saintenac, C., Choulet, F., Leroy, P., Korol, A., Michalak, M., Kianian, S., Spielmeyer, W., Lagudah, E., Somers, D., Kilian, A., Alaux, M., Vautrin, S., Berges, H., Eversole, K., Appels, R., Šafář, J., Šimková, H., Doležel, J., Bernard, M., Feuillet, C.
SCIENCE 322: 101-104, 2008

Keywords: RUST RESISTANCE GENE; TRITICUM-AESTIVUM; HEXAPLOID WHEAT; COMMON WHEAT; GENOME; RICE; SR2
Abstract: As the staple food for 35% of the world's population, wheat is one of the most important crop species. To date, sequence- based tools to accelerate wheat improvement are lacking. As part of the international effort to sequence the 17- billion- base- pair hexaploid bread wheat genome ( 2n = 6x = 42 chromosomes), we constructed a bacterial artificial chromosome ( BAC)based integrated physical map of the largest chromosome, 3B, that alone is 995 megabases. A chromosome- specific BAC library was used to assemble 82% of the chromosome into 1036 contigs that were anchored with 1443 molecular markers, providing a major resource for genetic and genomic studies. This physical map establishes a template for the remaining wheat chromosomes and demonstrates the feasibility of constructing physical maps in large, complex, polyploid genomes with a chromosome- based approach.
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IEB authors: Jaroslav Doležel, Jan Šafář, Hana Šimková