Two independent allohexaploidizations and genomic fractionation in Solanales

doi:10.3389/fpls.2022.1001402

CORC > 植物研究所 > 中国科学院植物研究所 > 系统与进化植物学国家重点实验室

	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
刊名	FRONTIERS IN PLANT SCIENCE
	2022
卷号	13
关键词	Solanaceae Convolvulaceae polyploidization genomic fractionation chromosomal structural variation BMY genes keywordbelowspace-30pt
ISSN号	1664-462X
DOI	10.3389/fpls.2022.1001402
文献子类	Article
英文摘要	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.
学科主题	Plant Sciences
出版地	LAUSANNE
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)
语种	英语
出版者	FRONTIERS MEDIA SA
WOS记录号	WOS:000872368000001
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]
内容类型	期刊论文
源URL	[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.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing, Peoples R China 2.North China Univ Sci & Technol, Ctr Genom & Computat Biol, Sch Life Sci, Tangshan, Hebei, Peoples R China 3.Univ Chinese Acad Sci, 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).