The transcriptional landscape of polyploid wheat

• DOI: 10.1126/science.aar6089
• Publication Date: 2018-08-20T18:55:55Z
• Authors: R. H. Ramírez-Gon...; P. Borrill; D. Lang; S. A. Harrington; J. Brinton; L. Venturini; M. Davey; J. Jacobs; F. van Ex; A. Pasha; Y. Khedikar; S. J. Robinson; A. T. Cory; T. Florio; L. Concia; C. Juery; H. Schoonbeek; B. Steuernagel; D. Xiang; C. J. Ridout; B. Chalhoub; K. F. X. Mayer; M. Benhamed; D. Latrasse; A. Bendahmane; ; B. B. H. Wulff; R. Appels; V. Tiwari; R. Datla; F. Choulet; C. J. Pozniak; N. J. Provart; A. G. Sharpe; E. Paux; M. Spannagl; A. Bräutigam; C. Uauy; Abraham Korol; Andrew G. Sharpe; Angéla Juhász; Antje Rohde; Arnaud Bellec; Assaf Distelfeld; Bala Ani Akpinar; Beat Keller; Benoit Darrier; Bikram Gill; Boulos Chalhoub; Burkhard Steuernagel; Catherine Feuillet; Chanderkant Chaud...; Cristobal Uauy; Curtis Pozniak; Danara Ormanbekova; Daoquan Xiang; David Latrasse; David Swarbreck; Delfina Barabaschi; Dina Raats; Ekaterina Sergeeva; Elena Salina; Etienne Paux; Federica Cattonaro; Frédéric Choulet; Fuminori Kobayashi; Gabriel Keeble-Ga...; Gaganpreet Kaur; Gary Muehlbauer; George Kettleborough; Guotai Yu; Hana Šimková; Heidrun Gundlach; Hélène Berges; Hélène Rimbert; Hikmet Budak; Hirokazu Handa; Ian Small; Jan Bartoš; Jane Rogers; Jaroslav Doležel; Jens Keilwagen; Jesse Poland; Joanna Melonek; John Jacobs; Jon Wright; Jonathan D. G. Jones; Juan Gutierrez-Go...; Kellye Eversole; Kirby Nilsen; Klaus F.X. Mayer; Kostya Kanyuka; Kuldeep Singh; Liangliang Gao; Lorenzo Concia; Luca Venturini; Luigi Cattivelli; Manuel Spannagl; Martin Mascher; Matthew Hayden; Michael Abrouk; Michael Alaux; Mingcheng Luo; Miroslav Valárik; Moussa Benhamed; Nagendra K. Singh; Naveen Sharma; Nicolas Guilhot; Nikolai Ravin; Nils Stein; Odd-Arne Olsen; Om Prakash Gupta; Paramjit Khurana; Parveen Chhuneja; Philipp E. Bayer; Philippa Borrill; Philippe Leroy; Philippe Rigault; Pierre Sourdille; Pilar Hernandez; Raphael Flores; Ricardo H. Ramire...; Robert King; Ron Knox; Rudi Appels; Ruonan Zhou; Sean Walkowiak; Sergio Galvez; Sezgi Biyiklioglu; Shuhei Nasuda; Simen Sandve; Smahane Chalabi; Song Weining; Sunish Sehgal; Suruchi Jindal; Tatiana Belova; Thomas Letellier; Thomas Wicker; Tsuyoshi Tanaka; Tzion Fahima; Valérie Barbe; Vijay Tiwari; Vinod Kumar; Yifang Tan
• Keywords: Polyploid

The coordinated expression of highly related homoeologous genes in polyploid species underlies the phenotypes many world's major crops. Here we combine extensive gene datasets to produce a comprehensive, genome-wide analysis homoeolog patterns hexaploid bread wheat. Bias varies between tissues, with ~30% wheat homoeologs showing nonbalanced expression. We found asymmetries along chromosomes, largest inter-tissue, inter-cultivar, and coding sequence variation, most often located high-recombination distal ends chromosomes. These transcriptionally dynamic potentially represent first steps toward neo- or subfunctionalization homoeologs. Coexpression networks reveal coordination throughout development and, alongside detailed atlas, provide framework target candidate underpinning agronomic traits