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Structural and functional partitioning of bread wheat chromosome 3B

  • Frédéric Choulet
  • , Adriana Alberti
  • , Sébastien Theil
  • , Natasha Glover
  • , Valérie Barbe
  • , Josquin Daron
  • , Lise Pingault
  • , Pierre Sourdille
  • , Arnaud Couloux
  • , Etienne Paux
  • , Philippe Leroy
  • , Sophie Mangenot
  • , Nicolas Guilhot
  • , Jacques Le Gouis
  • , Francois Balfourier
  • , Michael Alaux
  • , Véronique Jamilloux
  • , Julie Poulain
  • , Céline Durand
  • , Arnaud Bellec
  • Christine Gaspin, Jan Safar, Jaroslav Dolezel, Jane Rogers, Klaas Vandepoele, Jean Marc Aury, Klaus Mayer, Hélène Berges, Hadi Quesneville, Patrick Wincker, Catherine Feuillet

Research output: Contribution to journalArticlepeer-review

479 Scopus citations

Abstract

We produced a reference sequence of the 1-gigabase chromosome 3B of hexaploid bread wheat. By sequencing 8452 bacterial artificial chromosomes in pools, we assembled a sequence of 774 megabases carrying 5326 protein-coding genes, 1938 pseudogenes, and 85% of transposable elements. The distribution of structural and functional features along the chromosome revealed partitioning correlated with meiotic recombination. Comparative analyses indicated high wheat-specific inter- and intrachromosomal gene duplication activities that are potential sources of variability for adaption. In addition to providing a better understanding of the organization, function, and evolution of a large and polyploid genome, the availability of a high-quality sequence anchored to genetic maps will accelerate the identification of genes underlying important agronomic traits.

Original languageEnglish
Article number1249721
JournalScience
Volume345
Issue number6194
DOIs
StatePublished - 2014
Externally publishedYes

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