Synthesis of Nuclear and Chloroplast Data Combined With Network Analyses Supports the Polyploid Origin of the Apple Tribe and the Hybrid Origin of the Maleae-Gillenieae Clade

doi:10.3389/fpls.2021.820997

	Synthesis of Nuclear and Chloroplast Data Combined With Network Analyses Supports the Polyploid Origin of the Apple Tribe and the Hybrid Origin of the Maleae-Gillenieae Clade
	Hodel, Richard G. J.; Zimmer, Elizabeth A.; Liu, Bin-Bin ; Wen, Jun 3
	2022
发表期刊	FRONTIERS IN PLANT SCIENCE
ISSN	1664-462X
卷号	12
摘要	Plant biologists have debated the evolutionary origin of the apple tribe (Maleae; Rosaceae) for over a century. The wide-hybridization hypothesis posits that the pome-bearing members of Maleae (base chromosome number x = 17) resulted from a hybridization and/or allopolyploid event between progenitors of other tribes in the subfamily Amygdaloideae with x = 8 and x = 9, respectively. An alternative spiraeoid hypothesis proposed that the x = 17 of Maleae arose via the genome doubling of x = 9 ancestors to x = 18, and subsequent aneuploidy resulting in x = 17. We use publicly available genomic data-448 nuclear genes and complete plastomes-from 27 species representing all major tribes within the Amygdaloideae to investigate evolutionary relationships within the subfamily containing the apple tribe. Specifically, we use network analyses and multi-labeled trees to test the competing wide-hybridization and spiraeoid hypotheses. Hybridization occurred between an ancestor of the tribe Spiraeeae (x = 9) and an ancestor of the clade Sorbarieae (x = 9) + Exochordeae (x = 8) + Kerrieae (x = 9), giving rise to the clade Gillenieae (x = 9) + Maleae (x = 17). The ancestor of the Maleae + Gillenieae arose via hybridization between distantly related tribes in the Amygdaloideae (i.e., supporting the wide hybridization hypothesis). However, some evidence supports an aspect of the spiraeoid hypothesis-the ancestors involved in the hybridization event were likely both x = 9, so genome doubling was followed by aneuploidy to result in x = 17 observed in Maleae. By synthesizing existing genomic data with novel analyses, we resolve the nearly century-old mystery regarding the origin of the apple tribe. Our results also indicate that nuclear gene tree-species tree conflict and/or cytonuclear conflict are pervasive at several other nodes in subfamily Amygdaloideae of Rosaceae.
关键词	allopolyploidy ancient hybridization cytonuclear conflict genome doubling phylogenetic networks phylogenomics reticulate evolution
学科领域	Plant Sciences
DOI	10.3389/fpls.2021.820997
收录类别	SCI
语种	英语
WOS关键词	PHYLOGENETIC-RELATIONSHIPS ; CYTONUCLEAR DISCORDANCE ; ROSACEAE ; DIVERSIFICATION ; MALOIDEAE ; HISTORY ; PACKAGE ; PLUMS ; DNA
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000752606600001
出版者	FRONTIERS MEDIA SA
文献子类	Article
出版地	LAUSANNE
作者邮箱	richiehodel@gmail.com
作品OA属性	gold, Green Published
引用统计	被引频次：14[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/2S10CLM1/29062
专题	系统与进化植物学国家重点实验室
作者单位	1.[Hodel, Richard G. J. 2.Zimmer, Elizabeth A. 3.Liu, Bin-Bin 4.Smithsonian Inst, Natl Museum Nat Hist, Dept Bot, Washington, DC 20560 USA 5.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Hodel, Richard G. J.,Zimmer, Elizabeth A.,Liu, Bin-Bin,et al. Synthesis of Nuclear and Chloroplast Data Combined With Network Analyses Supports the Polyploid Origin of the Apple Tribe and the Hybrid Origin of the Maleae-Gillenieae Clade[J]. FRONTIERS IN PLANT SCIENCE,2022,12.
APA	Hodel, Richard G. J.,Zimmer, Elizabeth A.,Liu, Bin-Bin,&Wen, Jun.(2022).Synthesis of Nuclear and Chloroplast Data Combined With Network Analyses Supports the Polyploid Origin of the Apple Tribe and the Hybrid Origin of the Maleae-Gillenieae Clade.FRONTIERS IN PLANT SCIENCE,12.
MLA	Hodel, Richard G. J.,et al."Synthesis of Nuclear and Chloroplast Data Combined With Network Analyses Supports the Polyploid Origin of the Apple Tribe and the Hybrid Origin of the Maleae-Gillenieae Clade".FRONTIERS IN PLANT SCIENCE 12(2022).

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