Journal article

Early allopolyploid evolution in the post-Neolithic Brassica napus oilseed genome


Authors listChalhoub, B; Denoeud, F; Liu, SY; Parkin, IAP; Tang, HB; Wang, XY; Chiquet, J; Belcram, H; Tong, CB; Samans, B; Correa, M; Da Silva, C; Just, J; Falentin, C; Koh, CS; Le Clainche, I; Bernard, M; Bento, P; Noel, B; Labadie, K; Alberti, A; Charles, M; Arnaud, D; Guo, H; Daviaud, C; Alamery, S; Jabbari, K; Zhao, MX; Edger, PP; Chelaifa, H; Tack, D; Lassalle, G; Mestiri, I; Schnel, N; Le Paslier, MC; Fan, GY; Renault, V; Bayer, PE; Golicz, AA; Manoli, S; Lee, TH; Thi, VHD; Chalabi, S; Hu, Q; Fan, CC; Tollenaere, R; Lu, YH; Battail, C; Shen, JX; Sidebottom, CHD; Wang, XF; Canaguier, A; Chauveau, A; Berard, A; Deniot, G; Guan, M; Liu, ZS; Sun, FM; Lim, YP; Lyons, E; Town, CD; Bancroft, I; Wang, XW; Meng, JL; Ma, JX; Pires, JC; King, GJ; Brunel, D; Delourme, R; Renard, M; Aury, JM; Adams, KL; Batley, J; Snowdon, RJ; Tost, J; Edwards, D; Zhou, YM; Hua, W; Sharpe, AG; Paterson, AH; Guan, CY; Wincker, P

Publication year2014

Pages950-953

JournalScience

Volume number345

Issue number6199

ISSN0036-8075

DOI Linkhttps://doi.org/10.1126/science.1253435

PublisherAmerican Association for the Advancement of Science


Abstract
Oilseed rape (Brassica napus L.) was formed similar to 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 72x 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 A(n) and C-n 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.



Citation Styles

Harvard Citation styleChalhoub, B., Denoeud, F., Liu, S., Parkin, I., Tang, H., Wang, X., et al. (2014) Early allopolyploid evolution in the post-Neolithic Brassica napus oilseed genome, Science, 345(6199), pp. 950-953. https://doi.org/10.1126/science.1253435

APA Citation styleChalhoub, B., Denoeud, F., Liu, S., Parkin, I., Tang, H., Wang, X., Chiquet, J., Belcram, H., Tong, C., Samans, B., Correa, M., Da Silva, C., Just, J., Falentin, C., Koh, C., Le Clainche, I., Bernard, M., Bento, P., Noel, B., ...Wincker, P. (2014). Early allopolyploid evolution in the post-Neolithic Brassica napus oilseed genome. Science. 345(6199), 950-953. https://doi.org/10.1126/science.1253435


Last updated on 2025-21-05 at 16:14