Two independent allohexaploidizations and genomic fractionation in Solanales

doi:10.3389/fpls.2022.1001402

	Two independent allohexaploidizations and genomic fractionation in Solanales
	Zhang, Yan ; Zhang, Lan ; Xiao, Qimeng ; Wu, Chunyang ; Zhang, Jiaqi ; Xu, Qiang ; Yu, Zijian ; Bao, Shoutong ; Wang, Jianyu ; Li, Yu ; Wang, Li ; Wang, Jinpeng 1,2
	2022
发表期刊	FRONTIERS IN PLANT SCIENCE
ISSN	1664-462X
卷号	13
摘要	Solanales, an order of flowering plants, contains the most economically important vegetables among all plant orders. To date, many Solanales genomes have been sequenced. However, the evolutionary processes of polyploidization events in Solanales and the impact of polyploidy on species diversity remain poorly understood. We compared two representative Solanales genomes (Solanum lycopersicum L. and Ipomoea triloba L.) and the Vitis vinifera L. genome and confirmed two independent polyploidization events. Solanaceae common hexaploidization (SCH) and Convolvulaceae common hexaploidization (CCH) occurred similar to 43-49 and similar to 40-46 million years ago (Mya), respectively. Moreover, we identified homologous genes related to polyploidization and speciation and constructed multiple genomic alignments with V. vinifera genome, providing a genomic homology framework for future Solanales research. Notably, the three polyploidization-produced subgenomes in both S. lycopersicum and I. triloba showed significant genomic fractionation bias, suggesting the allohexaploid nature of the SCH and CCH events. However, we found that the higher genomic fractionation bias of polyploidization-produced subgenomes in Solanaceae was likely responsible for their more abundant species diversity than that in Convolvulaceae. Furthermore, through genomic fractionation and chromosomal structural variation comparisons, we revealed the allohexaploid natures of SCH and CCH, both of which were formed by two-step duplications. In addition, we found that the second step of two paleohexaploidization events promoted the expansion and diversity of beta-amylase (BMY) genes in Solanales. These current efforts provide a solid foundation for future genomic and functional exploration of Solanales.
关键词	Solanaceae Convolvulaceae polyploidization genomic fractionation chromosomal structural variation BMY genes keywordbelowspace-30pt
学科领域	Plant Sciences
DOI	10.3389/fpls.2022.1001402
收录类别	SCI
语种	英语
WOS关键词	POLYPLOIDY ; EVOLUTION ; SEQUENCE ; DUPLICATIONS ; HEXAPLOIDIZATION ; DIVERSITY ; INSIGHTS ; ANCIENT ; GENES ; RATES
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000872368000001
出版者	FRONTIERS MEDIA SA
文献子类	Article
出版地	LAUSANNE
资助机构	National Natural Science Foundation of China ; Natural Science Foundation of Hebei Province ; Science and Technology Project of Hebei Education Department ; [32170236] ; [31501333] ; [C2020209064] ; [QN2020139]
作者邮箱	wlsh219@126.com ; wangjinpeng@ibcas.ac.cn
作品OA属性	gold, Green Published
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/28987
专题	系统与进化植物学国家重点实验室
作者单位	1.North China Univ Sci & Technol, Ctr Genom & Computat Biol, Sch Life Sci, Tangshan, Hebei, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Yan,Zhang, Lan,Xiao, Qimeng,et al. Two independent allohexaploidizations and genomic fractionation in Solanales[J]. FRONTIERS IN PLANT SCIENCE,2022,13.
APA	Zhang, Yan.,Zhang, Lan.,Xiao, Qimeng.,Wu, Chunyang.,Zhang, Jiaqi.,...&Wang, Jinpeng.(2022).Two independent allohexaploidizations and genomic fractionation in Solanales.FRONTIERS IN PLANT SCIENCE,13.
MLA	Zhang, Yan,et al."Two independent allohexaploidizations and genomic fractionation in Solanales".FRONTIERS IN PLANT SCIENCE 13(2022).

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