| Literature DB >> 25146293 |
Boulos Chalhoub1, France Denoeud2, Shengyi Liu3, Isobel A P Parkin4, Haibao Tang5, Xiyin Wang6, Julien Chiquet7, Harry Belcram8, Chaobo Tong3, Birgit Samans9, Margot Corréa10, Corinne Da Silva10, Jérémy Just8, Cyril Falentin11, Chu Shin Koh12, Isabelle Le Clainche8, Maria Bernard10, Pascal Bento10, Benjamin Noel10, Karine Labadie10, Adriana Alberti10, Mathieu Charles13, Dominique Arnaud8, Hui Guo14, Christian Daviaud15, Salman Alamery16, Kamel Jabbari17, Meixia Zhao18, Patrick P Edger19, Houda Chelaifa8, David Tack20, Gilles Lassalle11, Imen Mestiri8, Nicolas Schnel11, Marie-Christine Le Paslier13, Guangyi Fan21, Victor Renault22, Philippe E Bayer16, Agnieszka A Golicz16, Sahana Manoli16, Tae-Ho Lee14, Vinh Ha Dinh Thi8, Smahane Chalabi8, Qiong Hu3, Chuchuan Fan23, Reece Tollenaere16, Yunhai Lu8, Christophe Battail10, Jinxiong Shen23, Christine H D Sidebottom12, Xinfa Wang3, Aurélie Canaguier8, Aurélie Chauveau13, Aurélie Bérard13, Gwenaëlle Deniot11, Mei Guan24, Zhongsong Liu24, Fengming Sun21, Yong Pyo Lim25, Eric Lyons26, Christopher D Town27, Ian Bancroft28, Xiaowu Wang29, Jinling Meng23, Jianxin Ma18, J Chris Pires30, Graham J King31, Dominique Brunel13, Régine Delourme11, Michel Renard11, Jean-Marc Aury10, Keith L Adams20, Jacqueline Batley32, Rod J Snowdon9, Jorg Tost15, David Edwards33, Yongming Zhou34, Wei Hua35, Andrew G Sharpe36, Andrew H Paterson37, Chunyun Guan38, Patrick Wincker39.
Abstract
Oilseed rape (Brassica napus L.) was formed ~7500 years ago by hybridization between B. rapa and B. oleracea, followed by chromosome doubling, a process known as allopolyploidy. Together with more ancient polyploidizations, this conferred an aggregate 72× genome multiplication since the origin of angiosperms and high gene content. We examined the B. napus genome and the consequences of its recent duplication. The constituent An and Cn subgenomes are engaged in subtle structural, functional, and epigenetic cross-talk, with abundant homeologous exchanges. Incipient gene loss and expression divergence have begun. Selection in B. napus oilseed types has accelerated the loss of glucosinolate genes, while preserving expansion of oil biosynthesis genes. These processes provide insights into allopolyploid evolution and its relationship with crop domestication and improvement.Entities:
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Year: 2014 PMID： 25146293 DOI： 10.1126/science.1253435
Source DB: PubMed Journal: Science ISSN： 0036-8075 Impact factor: 47.728