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1BL physical map

Targeted chromosomes

1BL
1BL
Click on a chromosome to access associated data (when available) at URGI Sequences Repository.

Project team

First nameLast nameEmailInstitutionCountry
Romain Philippe romain.philippeSPAMFILTER@clermont.inra.fr INRA-GDEC France
Isabelle Bertin isabelle.bertinSPAMFILTER@clermont.inra.fr INRA-GDEC France
Etienne Paux etiennne.pauxSPAMFILTER@clermont.inra.fr INRA-GDEC France
Frederic Choulet fchouletSPAMFILTER@clermont.inra.fr INRA-GDEC France

Project collaborators

First nameLast nameEmailInstitutionCountry
Hélène Bergès hbergesSPAMFILTER@toulouse.inra.fr INRA-CNRGV France
Michael Alaux michael.alauxSPAMFILTER@versailles.inra.fr INRA-URGI France
Jaroslav Dolezel dolezelSPAMFILTER@ueb.cas.cz IEB Czech Republic

Project funding

"This project was funded by the European Community's Seventh Framework Programme (FP7/ 2007-2013) under the grant agreement n°FP7-212019”

Abstract

Using a combination of novel high throughput marker assays and an assembly program, we developed a high quality physical map representing 93% of wheat chromosome 1BL, anchored and ordered with 5,489 markers including 1,161 genes. Analysis of the gene space organization and evolution revealed that gene distribution and conservation along the chromosome results from the superimposition of the ancestral grass and recent wheat evolutionary patterns, leading to a peak of synteny in the central part of the chromosome arm and an increased density of non-collinear genes towards the telomere. With a density of about 11 markers per Mb, the 1BL physical map provides 916 markers, including 193 genes, for fine mapping the 40 QTLs mapped on this chromosome. With this work, we demonstrated that high marker density physical maps can be developed in complex genomes such as wheat to accelerate map-based cloning, gain new insights into genome evolution, and provide a foundation for reference sequencing.

Publications

  • Philippe, R., Paux, E., Bertin, I., Sourdille, P., Choulet, F., Laugier, C., Simkova, H., Safar, J., Bellec, A., Vautrin, S., Frenkel, Z., Cattonaro, F., Magni, F., Scalabrin, S., Martis, M.M., Mayer, K.F., Korol, A., Berges, H., Dolezel, J., and Feuillet, C., A high density physical map of chromosome 1BL supports evolutionary studies, map-based cloning and sequencing in wheat. Genome Biol 2013 Jun, 14(6):R64 Pubmed: 23800011