globalchange  > 气候变化与战略
DOI: 10.1073/pnas.1919086117
论文题名:
Divergent selection and genetic introgression shape the genome landscape of heterosis in hybrid rice
作者: Lin Z.; Qin P.; Zhang X.; Fu C.; Deng H.; Fu X.; Huang Z.; Jiang S.; Li C.; Tang X.; Wang X.; He G.; Yang Y.; He H.; Deng X.W.
刊名: Proceedings of the National Academy of Sciences of the United States of America
ISSN: 0027-8424
出版年: 2020
卷: 117, 期:9
起始页码: 4623
结束页码: 4631
语种: 英语
英文关键词: Divergent selection ; Genetic introgression ; Heterosis ; Hybrid rice
Scopus关键词: adult ; article ; cross breeding ; evolutionary adaptation ; female ; field study ; genotype ; heterosis ; human ; introgression ; landrace ; male ; nonhuman ; phenotype ; rice ; single nucleotide polymorphism ; genetic selection ; genetics ; Oryza ; plant breeding ; plant genome ; procedures ; Genetic Introgression ; Genome, Plant ; Hybrid Vigor ; Oryza ; Plant Breeding ; Selection, Genetic
英文摘要: The successful application of heterosis in hybrid rice has dramatically improved rice productivity, but the genetic mechanism for heterosis in the hybrid rice remains unclear. In this study, we generated two populations of rice F1 hybrids with present-day commercial hybrid parents, genotyped the parents with 50k SNP chip and genome resequencing, and recorded the phenotype of ∼2,000 hybrids at three field trials. By integrating these data with the collected genotypes of ∼4,200 rice landraces and improved varieties that were reported previously, we found that the male and female parents have different levels of genome introgressions from other rice subpopulations, including indica, aus, and japonica, therefore shaping heterotic loci in the hybrids. Among the introgressed exogenous genome, we found that heterotic loci, including Ghd8/DTH8, Gn1a, and IPA1 existed in wild rice, but were significantly divergently selected among the rice subpopulations, suggesting these loci were subject to environmental adaptation. During modern rice hybrid breeding, heterotic loci were further selected by removing loci with negative effect and fixing loci with positive effect and pyramid breeding. Our results provide insight into the genetic basis underlying the heterosis of elite hybrid rice varieties, which could facilitate a better understanding of heterosis and rice hybrid breeding. © 2020 National Academy of Sciences. All rights reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/163491
Appears in Collections:气候变化与战略

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作者单位: Lin, Z., School of Advanced Agriculture Sciences, School of Life Sciences, State Key Laboratory of Protein and Plant Gene Research, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, 100871, China; Qin, P., Department of Rice Breeding, Hunan Yahua Seed Scientific Research Institute, Changsha, 410119, China, State Key Laboratory of Hybrid Rice, Key Laboratory of Southern Rice Innovation and Improvement, Ministry of Agriculture and Rural Affairs, Changsha, 410119, China; Zhang, X., Department of Rice Breeding, Hunan Yahua Seed Scientific Research Institute, Changsha, 410119, China, State Key Laboratory of Hybrid Rice, Key Laboratory of Southern Rice Innovation and Improvement, Ministry of Agriculture and Rural Affairs, Changsha, 410119, China; Fu, C., Department of Rice Breeding, Hunan Yahua Seed Scientific Research Institute, Changsha, 410119, China, State Key Laboratory of Hybrid Rice, Key Laboratory of Southern Rice Innovation and Improvement, Ministry of Agriculture and Rural Affairs, Changsha, 410119, China; Deng, H., Department of Molecular Marker, Shenzhen Institute of Molecular Crop Design, Shenzhen, 518107, China, Department of Molecular Marker, Shenzhen Agricultural Science and Technology Promotion Center, Shenzhen, 518055, China; Fu, X., Department of Rice Breeding, Hunan Yahua Seed Scientific Research Institute, Changsha, 410119, China, State Key Laboratory of Hybrid Rice, Key Laboratory of Southern Rice Innovation and Improvement, Ministry of Agriculture and Rural Affairs, Changsha, 410119, China; Huang, Z., Department of Rice Breeding, Hunan Yahua Seed Scientific Research Institute, Changsha, 410119, China, State Key Laboratory of Hybrid Rice, Key Laboratory of Southern Rice Innovation and Improvement, Ministry of Agriculture and Rural Affairs, Changsha, 410119, China; Jiang, S., Department of Crop Genomics and Bioinformatics, College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, China; Li, C., Rice Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, China; Tang, X., Department of Molecular Marker, Shenzhen Institute of Molecular Crop Design, Shenzhen, 518107, China, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, College of Life Sciences, South China Normal University, Guangzhou, 510631, China; Wang, X., Department of Crop Genomics and Bioinformatics, College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, China; He, G., School of Advanced Agriculture Sciences, School of Life Sciences, State Key Laboratory of Protein and Plant Gene Research, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, 100871, China; Yang, Y., Department of Rice Breeding, Hunan Yahua Seed Scientific Research Institute, Changsha, 410119, China, State Key Laboratory of Hybrid Rice, Key Laboratory of Southern Rice Innovation and Improvement, Ministry of Agriculture and Rural Affairs, Changsha, 410119, China; He, H., School of Advanced Agriculture Sciences, School of Life Sciences, State Key Laboratory of Protein and Plant Gene Research, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, 100871, China; Deng, X.W., School of Advanced Agriculture Sciences, School of Life Sciences, State Key Laboratory of Protein and Plant Gene Research, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, 100871, China

Recommended Citation:
Lin Z.,Qin P.,Zhang X.,et al. Divergent selection and genetic introgression shape the genome landscape of heterosis in hybrid rice[J]. Proceedings of the National Academy of Sciences of the United States of America,2020-01-01,117(9)
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