An Overlooked Paleotetraploidization in Cucurbitaceae.
An Overlooked Paleotetraploidization in Cucurbitaceae.
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葫芦科被忽视的古四倍体化
DOI:
10.1093/molbev/msx242
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发表时间:
2018-01-01
影响因子:
10.7
通讯作者:
Wang X
中科院分区:
文献类型:
--
作者:
Wang J;Sun P;Li Y;Liu Y;Yang N;Yu J;Ma X;Sun S;Xia R;Liu X;Ge D;Luo S;Liu Y;Kong Y;Cui X;Lei T;Wang L;Wang Z;Ge W;Zhang L;Song X;Yuan M;Guo D;Jin D;Chen W;Pan Y;Liu T;Yang G;Xiao Y;Sun J;Zhang C;Li Z;Xu H;Duan X;Shen S;Zhang Z;Huang S;Wang X
Cucurbitaceae plants are of considerable biological and economic importance, and genomes of cucumber, watermelon, and melon have been sequenced. However, a comparative genomics exploration of their genome structures and evolution has not been available. Here, we aimed at performing a hierarchical inference of genomic homology resulted from recursive paleopolyploidizations. Unexpectedly, we found that, shortly after a core-eudicot-common hexaploidy, a cucurbit-common tetraploidization (CCT) occurred, overlooked by previous reports. Moreover, we characterized gene loss (and retention) after these respective events, which were significantly unbalanced between inferred subgenomes, and between plants after their split. The inference of a dominant subgenome and a sensitive one suggested an allotetraploid nature of the CCT. Besides, we found divergent evolutionary rates among cucurbits, and after doing rate correction, we dated the CCT to be 90–102 Ma, likely common to all Cucurbitaceae plants, showing its important role in the establishment of the plant family.
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影响因子:
4
作者:
Soltis, Pamela S.;Marchant, D. Blaine;Soltis, Douglas E.
通讯作者:
Soltis, Douglas E.
DOI:
10.1073/pnas.0501102102
发表时间:
2005-04-12
影响因子:
11.1
作者:
Maere, S;De Bodt, S;Van de Peer, Y
通讯作者:
Van de Peer, Y
影响因子:
64.8
作者:
Jaillon, Olivier;Aury, Jean-Marc;Wincker, Patrick
通讯作者:
Wincker, Patrick
影响因子:
20.5
作者:
Chen, Z. Jeffrey
通讯作者:
Chen, Z. Jeffrey
影响因子:
3
作者:
Wang X;Shi X;Li Z;Zhu Q;Kong L;Tang W;Ge S;Luo J
通讯作者:
Luo J