A chromosome-based draft sequence of the hexaploid bread wheat ( Triticum aestivum ) genome

Черновая последовательность генома гексаплоидной хлебной пшеницы (Triticum aestivum), построенная на основе хромосом
Klaus Mayer, Jane Rogers, Jaroslav Doležel, Curtis Pozniak, Kellye Eversole, Catherine Feuillet, Bikram Gill, Bernd Friebe, Adam J. Lukaszewski, Pierre Sourdille, Takashi R. Endo, Marie Kubaláková, Jarmila Číhalíková, Zdeňka Dubská, Jan Vrána, Romana Šperková, Hana Šimková, Melanie Febrer, Leah Clissold, Kirsten McLay, Kuldeep Singh, Parveen Chhuneja, Nagendra Kumar Singh, Jitendra P. Khurana, Eduard Akhunov, Frédéric Choulet, Adriana Alberti, Valérie Barbe, Patrick Wincker, Hiroyuki Kanamori, Fuminori Kobayashi, Takeshi Itoh, Takashi Matsumoto, Hiroaki Sakai, Tsuyoshi Tanaka, Jianzhong Wu, Yasunari Ogihara, Hirokazu Handa, P. Ron Maclachlan, Andrew Sharpe, Darrin Klassen, David Edwards, Jacqueline Batley, Odd-Arne Olsen, Simen R. Sandve, Sigbjørn Lien, Burkhard Steuernagel, Brande B. H. Wulff, Mario Cáccamo, Sarah Ayling, Ricardo H. Ramírez-González, Bernardo Clavijo, Jonathan Wright, Matthias Pfeifer, M. Spannagl, Mihaela Martis, Martin Mascher, Jarrod Chapman, Jesse Poland, Uwe Scholz, Kerrie Barry, Robbie Waugh, Daniel S. Rokhsar, Gary J. Muehlbauer, Nils Stein, Heidrun Gundlach, Matthias Zytnicki, Véronique Jamilloux, Hadi Quesneville, Thomas Wicker, Primetta Faccioli, Moreno Colaiacovo, A. M. Stanca, Hikmet Budak, Luigi Cattivelli, Natasha Glover, Lise Pingault, Etienne Paux, Sapna Sharma, R. Appels, M. Bellgard, Brett Chapman, Thomas Nußbaumer, Kai Christian Bader, Hélène Rimbert, Shichen Wang, R. E. Knox, Andrzej Kilian, Michaël Alaux, Françoise Alfama, L.J. Couderc, Nicolas Guilhot, Claire Viseux, Mikaël Loaec, Beat Keller, Sébastien Praud
2014-07-17
SCID:  54.1/q69j7mwz Discuss with AI
chromosome-based draft sequencegene duplicationhexaploid bread wheat genomepolyploidizationwheat subgenomes
Abstract (AI)
An ordered draft sequence of the 17-gigabase hexaploid bread wheat (Triticum aestivum) genome has been produced by sequencing isolated chromosome arms. We have annotated 124,201 gene loci distributed nearly evenly across the homeologous chromosomes and subgenomes. Comparative gene analysis of wheat subgenomes and extant diploid and tetraploid wheat relatives showed that high sequence similarity and structural conservation are retained, with limited gene loss, after polyploidization. However, across the genomes there was evidence of dynamic gene gain, loss, and duplication since the divergence of the wheat lineages. A high degree of transcriptional autonomy and no global dominance was found for the subgenomes. These insights into the genome biology of a polyploid crop provide a springboard for faster gene isolation, rapid genetic marker development, and precise breeding to meet the needs of increasing food demand worldwide.
Key Findings
1
An ordered draft sequence of the 17-gigabase hexaploid bread wheat genome was generated by sequencing isolated chromosome arms.
2
Comparative analyses revealed dynamic gene gain, loss, and duplication across wheat genomes since lineage divergence.
3
The study annotated 124,201 gene loci distributed nearly evenly across wheat’s homeologous chromosomes and three subgenomes.
4
The subgenomes showed high transcriptional autonomy without global dominance, supporting applications in gene isolation, marker development, and precision breeding.
5
Wheat subgenomes retain high sequence similarity and structural conservation, with limited gene loss following polyploidization.
Research Object

the 17-gigabase hexaploid bread wheat (Triticum aestivum) genome

Research Subject

genome organization and evolution, including gene distribution, sequence and structural conservation, gene gain/loss/duplication, and subgenome transcriptional autonomy after polyploidization

Publication Details
Publication Date
2014-07-17
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Authors
Klaus Mayer
Jane Rogers
Jaroslav Doležel
Curtis Pozniak
Kellye Eversole
Catherine Feuillet
Bikram Gill
Bernd Friebe
Adam J. Lukaszewski
Pierre Sourdille
Takashi R. Endo
Marie Kubaláková
Jarmila Číhalíková
Zdeňka Dubská
Jan Vrána
Romana Šperková
Hana Šimková
Melanie Febrer
Leah Clissold
Kirsten McLay
Kuldeep Singh
Parveen Chhuneja
Nagendra Kumar Singh
Jitendra P. Khurana
Eduard Akhunov
Frédéric Choulet
Adriana Alberti
Valérie Barbe
Patrick Wincker
Hiroyuki Kanamori
Fuminori Kobayashi
Takeshi Itoh
Takashi Matsumoto
Hiroaki Sakai
Tsuyoshi Tanaka
Jianzhong Wu
Yasunari Ogihara
Hirokazu Handa
P. Ron Maclachlan
Andrew Sharpe
Darrin Klassen
David Edwards
Jacqueline Batley
Odd-Arne Olsen
Simen R. Sandve
Sigbjørn Lien
Burkhard Steuernagel
Brande B. H. Wulff
Mario Cáccamo
Sarah Ayling
Ricardo H. Ramírez-González
Bernardo Clavijo
Jonathan Wright
Matthias Pfeifer
M. Spannagl
Mihaela Martis
Martin Mascher
Jarrod Chapman
Jesse Poland
Uwe Scholz
Kerrie Barry
Robbie Waugh
Daniel S. Rokhsar
Gary J. Muehlbauer
Nils Stein
Heidrun Gundlach
Matthias Zytnicki
Véronique Jamilloux
Hadi Quesneville
Thomas Wicker
Primetta Faccioli
Moreno Colaiacovo
A. M. Stanca
Hikmet Budak
Luigi Cattivelli
Natasha Glover
Lise Pingault
Etienne Paux
Sapna Sharma
R. Appels
M. Bellgard
Brett Chapman
Thomas Nußbaumer
Kai Christian Bader
Hélène Rimbert
Shichen Wang
R. E. Knox
Andrzej Kilian
Michaël Alaux
Françoise Alfama
L.J. Couderc
Nicolas Guilhot
Claire Viseux
Mikaël Loaec
Beat Keller
Sébastien Praud
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