Comparative population genomics of maize domestication and improvement.

Comparative population genomics of maize domestication and improvement.
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玉米驯化和改进的比较人口基因组学。

DOI:
10.1038/ng.2309
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发表时间:
2012-06-03
期刊:
影响因子:
30.8
通讯作者:
Ross-Ibarra J
Ross-Ibarra J
中科院分区:
生物学1区
文献类型:
--
作者:
Hufford MB;Xu X;van Heerwaarden J;Pyhäjärvi T;Chia JM;Cartwright RA;Elshire RJ;Glaubitz JC;Guill KE;Kaeppler SM;Lai J;Morrell PL;Shannon LM;Song C;Springer NM;Swanson-Wagner RA;Tiffin P;Wang J;Zhang G;Doebley J;McMullen MD;Ware D;Buckler ES;Yang S;Ross-Ibarra J

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驯化和植物育种是持续一万年的进化实验,从根本上改变了野生物种以满足人类的需求。玉米经历了一场特别引人注目的变革。几十年来,研究人员一直在寻求识别玉米进化的基因,但这些努力的范围有限。在这里,我们报告了基于对75个野生玉米、地方玉米和改良玉米品系的全基因组重新测序,对现代玉米进化的全面评估。我们发现了驯化后多样性恢复的证据,可能是来自野生近亲的导入,以及驯化过程中比改良过程中更强的选择的证据。我们发现了一些具有比先前显示的更强的选择信号的基因,这些基因是导致主要形态变化的基因4,5。最后,通过对基因表达的全转录组分析,我们发现了与玉米驯化和改良过程中顺式作用变异的消除一致的证据,并暗示现代育种在针对高表达基因的同时,在表达上具有更大的优势。
Domestication and plant breeding are ongoing, 10,000-year evolutionary experiments that have radically altered wild species to meet human needs. Maize has undergone a particularly striking transformation. Researchers have sought for decades to identify the genes underlying maize evolution, but these efforts have been limited in scope. Here, we report a comprehensive assessment of the evolution of modern maize based on the genome-wide resequencing of 75 wild, landrace, and improved maize lines. We find evidence of recovery of diversity post-domestication, likely introgression from wild relatives, and evidence for stronger selection during domestication than improvement. We identify a number of genes with stronger signals of selection than those previously shown to underlie major morphological changes4,5. Finally, through transcriptome-wide analysis of gene expression, we find evidence consistent with removal of cis-acting variation during maize domestication and improvement and suggestive of modern breeding having increased dominance in expression while targeting highly expressed genes.
DOI: 10.1093/nar/gkh011
发表时间: 2004-01-01
影响因子: 14.9
作者:
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通讯作者: Brendel, V
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发表时间: 2002-04-30
影响因子: 11.1
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DOI: 10.1534/genetics.112.138578
发表时间: 2012-07-01
期刊: GENETICS
影响因子: 3.3
作者:
Fang, Zhou;Pyhajarvi, Tanja;Ross-Ibarra, Jeffrey
通讯作者: Ross-Ibarra, Jeffrey