Diversification and independent domestication of Asian and European pears.
Diversification and independent domestication of Asian and European pears.
复制标题
亚洲和欧洲梨的多样化和独立驯化
DOI：
10.1186/s13059-018-1452-y
复制
发表时间：
2018-06-11
期刊：
影响因子：
12.3
通讯作者：
Zhang S
中科院分区：
文献类型：
--
作者：
Wu J;Wang Y;Xu J;Korban SS;Fei Z;Tao S;Ming R;Tai S;Khan AM;Postman JD;Gu C;Yin H;Zheng D;Qi K;Li Y;Wang R;Deng CH;Kumar S;Chagné D;Li X;Wu J;Huang X;Zhang H;Xie Z;Li X;Zhang M;Li Y;Yue Z;Fang X;Li J;Li L;Jin C;Qin M;Zhang J;Wu X;Ke Y;Wang J;Yang H;Zhang S
背景梨是一种全球栽培的水果，有5个驯化品种和数十个野生品种。然而，人们对这些梨物种的进化史以及是什么导致了亚洲梨和欧洲珍珠之间的不同表型性状知之甚少。结果我们报道了来自世界各地的113个梨种质的基因组重测序，这些材料代表了栽培和野生梨物种。基于18,302,883个已鉴定的SNPs，我们进行了系统发育、种群结构、基因流动和选择性扫描分析。此外，我们还提出了亚洲和欧洲梨的分化、传播和独立驯化的模式，即梨起源于中国西南部，然后传播到整个中亚，最终传播到西亚，然后传播到欧洲。我们发现了S核糖核酸酶基因的快速进化和平衡选择的证据，这些基因有助于维持自交不亲和性，从而促进了异交，并解释了整个欧亚大陆梨基因组的多样性。此外，亚洲梨和欧洲梨之间的不同选择扫描特征，结合共同定位的QTL和差异表达的基因，突出了不同的表型水果性状，包括果肉质地、糖、酸度、香气和核细胞。结论本研究为进一步阐明梨的进化史以及亚洲和欧洲梨的独立驯化提供了基础。此外，它还提供了大量和有价值的基因组资源，将显著促进梨的改良和分子育种努力。
BackgroundPear (Pyrus) is a globally grown fruit, with thousands of cultivars in five domesticated species and dozens of wild species. However, little is known about the evolutionary history of these pear species and what has contributed to the distinct phenotypic traits between Asian pears and European pears.ResultsWe report the genome resequencing of 113 pear accessions from worldwide collections, representing both cultivated and wild pear species. Based on 18,302,883 identified SNPs, we conduct phylogenetics, population structure, gene flow, and selective sweep analyses. Furthermore, we propose a model for the divergence, dissemination, and independent domestication of Asian and European pears in which pear, after originating in southwest China and then being disseminated throughout central Asia, has eventually spread to western Asia, and then on to Europe. We find evidence for rapid evolution and balancing selection for S-RNase genes that have contributed to the maintenance of self-incompatibility, thus promoting outcrossing and accounting for pear genome diversity across the Eurasian continent. In addition, separate selective sweep signatures between Asian pears and European pears, combined with co-localized QTLs and differentially expressed genes, underline distinct phenotypic fruit traits, including flesh texture, sugar, acidity, aroma, and stone cells.ConclusionsThis study provides further clarification of the evolutionary history of pear along with independent domestication of Asian and European pears. Furthermore, it provides substantive and valuable genomic resources that will significantly advance pear improvement and molecular breeding efforts.
登录
查看更多内容
新开发的梨 SSR 标记向其他蔷薇科物种的可转移性
影响因子：
2.1
作者：
Fan, L.;Zhang, M. -Y.;Liu, Q. -Z.;Li, L. -T.;Song, Y.;Wang, L. -F.;Zhang, S. -L.;Wu, J.
通讯作者：
Wu, J.
DOI：
10.1073/pnas.1215265109
发表时间：
2012-10-16
影响因子：
11.1
作者：
Dai, Fei;Nevo, Eviatar;Zhang, Guoping
通讯作者：
Zhang, Guoping
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：
3.7
作者：
Chagné D;Crowhurst RN;Pindo M;Thrimawithana A;Deng C;Ireland H;Fiers M;Dzierzon H;Cestaro A;Fontana P;Bianco L;Lu A;Storey R;Knäbel M;Saeed M;Montanari S;Kim YK;Nicolini D;Larger S;Stefani E;Allan AC;Bowen J;Harvey I;Johnston J;Malnoy M;Troggio M;Perchepied L;Sawyer G;Wiedow C;Won K;Viola R;Hellens RP;Brewer L;Bus VG;Schaffer RJ;Gardiner SE;Velasco R
通讯作者：
Velasco R
比较种群基因组学揭示了桃子，李子perica和人类对多年生水果作物的影响的驯化史。
影响因子：
12.3
作者：
Cao K;Zheng Z;Wang L;Liu X;Zhu G;Fang W;Cheng S;Zeng P;Chen C;Wang X;Xie M;Zhong X;Wang X;Zhao P;Bian C;Zhu Y;Zhang J;Ma G;Chen C;Li Y;Hao F;Li Y;Huang G;Li Y;Li H;Guo J;Xu X;Wang J
通讯作者：
Wang J