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Subgenome dominance and its evolutionary implications in crop domestication and breeding

文献类型：期刊论文

作者Wang, Zheng1,6,7; Yang, Jinghua5; Cheng, Feng4; Li, Peirong1,6,7; Xin, Xiaoyun1,6,7; Wang, Weihong1,6,7; Yu, Yangjun1,6,7; Zhang, Deshuang1,6,7; Zhao, Xiuyun1,6,7; Yu, Shuancang1,6,7
刊名HORTICULTURE RESEARCH
出版日期2022
卷号9
ISSN号2662-6810
DOI10.1093/hr/uhac090
文献子类Article
英文摘要Polyploidization or whole-genome duplication (WGD) is a well-known speciation and adaptation mechanism in angiosperms, while subgenome dominance is a crucial phenomenon in allopolyploids, established following polyploidization. The dominant subgenomes contribute more to genome evolution and homoeolog expression bias, both of which confer advantages for short-term phenotypic adaptation and long-term domestication. In this review, we firstly summarize the probable mechanistic basis for subgenome dominance, including the effects of genetic [transposon, genetic incompatibility, and homoeologous exchange (HE)], epigenetic (DNA methylation and histone modification), and developmental and environmental factors on this evolutionary process. We then move to Brassica rapa, a typical allopolyploid with subgenome dominance. Polyploidization provides the B. rapa genome not only with the genomic plasticity for adapting to changeable environments, but also an abundant genetic basis for morphological variation, making it a representative species for subgenome dominance studies. According to the 'two-step theory', B. rapa experienced genome fractionation twice during WGD, in which most of the genes responding to the environmental cues and phytohormones were overretained, enhancing subgenome dominance and consequent adaption. More than this, the pangenome of 18 B. rapa accessions with different morphotypes recently constructed provides further evidence to reveal the impacts of polyploidization and subgenome dominance on intraspecific diversification in B. rapa. Above and beyond the fundamental understanding of WGD and subgenome dominance in B. rapa and other plants, however, it remains elusive why subgenome dominance has tissue- and spatiotemporalspecific features and could shuffle between homoeologous regions of different subgenomes by environments in allopolyploids. We lastly propose acceleration of the combined application of resynthesized allopolyploids, omics technology, and genome editing tools to deepen mechanistic investigations of subgenome dominance, both genetic and epigenetic, in a variety of species and environments. We believe that the implications of genomic and genetic basis of a variety of ecologically, evolutionarily, and agriculturally interesting traits coupled with subgenome dominance will be uncovered and aid in making new discoveries and crop breeding.
学科主题Plant Sciences ; Genetics & Heredity ; Horticulture
电子版国际标准刊号2052-7276
出版地CARY
WOS关键词GENE-EXPRESSION ; TRAGOPOGON-MISCELLUS ; HOMOEOLOG EXPRESSION ; GENOME ; PLANT ; POLYPLOIDY ; ANCIENT ; PLASTICITY ; LEAF ; PRESENCE/ABSENCE
WOS研究方向Science Citation Index Expanded (SCI-EXPANDED)
语种英语
出版者OXFORD UNIV PRESS INC
WOS记录号WOS:000837070400004
资助机构Natural Science Foundation of China [32002057, 32172557, 32170227] ; Innovation and Capacity-Building Project of BAAFS [KJCX20210427] ; Young Talent Award of Beijing Agricultural and forestry Science and Science Innovation Program [KYCX202001-07]
源URL[http://ir.ibcas.ac.cn/handle/2S10CLM1/28738]  
专题系统与进化植物学国家重点实验室
作者单位1.Beijing Acad Agr & Forestry Sci BAAFS, Beijing Vegetable Res Ctr BVRC, Beijing 100097, Peoples R China
2.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing 100093, Peoples R China
3.Chinese Acad Agr Sci, Inst Vegetables & Flowers, Beijing 100081, Peoples R China
4.Zhejiang Univ, Inst Vegetable Sci, Lab Germplasm Innovat & Mol Breeding, Hangzhou 310058, Peoples R China
5.Beijing Key Lab Vegetable Germplasm Improvement, Beijing 100097, Peoples R China
6.Minist Agr, Key Lab Biol & Genet Improvement Hort Crops North, Beijing 100097, Peoples R China
7.Natl Engn Res Ctr Vegetables, Beijing 100097, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Zheng,Yang, Jinghua,Cheng, Feng,et al. Subgenome dominance and its evolutionary implications in crop domestication and breeding[J]. HORTICULTURE RESEARCH,2022,9.
APA Wang, Zheng.,Yang, Jinghua.,Cheng, Feng.,Li, Peirong.,Xin, Xiaoyun.,...&Su, Tongbing.(2022).Subgenome dominance and its evolutionary implications in crop domestication and breeding.HORTICULTURE RESEARCH,9.
MLA Wang, Zheng,et al."Subgenome dominance and its evolutionary implications in crop domestication and breeding".HORTICULTURE RESEARCH 9(2022).

入库方式： OAI收割

来源：植物研究所

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