Plastome phylogenomics, systematics, and divergence time estimation of the Beilschmiedia group (Lauraceae)

doi:10.1016/j.ympev.2020.106901

	Plastome phylogenomics, systematics, and divergence time estimation of the Beilschmiedia group (Lauraceae)
	Li, Haiwen 2; Liu, Bing ; Davis, Charles C.; Yang, Yong
	2020
发表期刊	MOLECULAR PHYLOGENETICS AND EVOLUTION
ISSN	1055-7903
卷号	151
摘要	Intergeneric relationships of the Beilschmiedia group (Lauraceae) remain unresolved, hindering our understanding of their classification and evolutionary diversification. To remedy this, we sequenced and assembled complete plastid genomes (plastomes) from 25 species representing five genera spanning most major clades of Beilschmiedia and close relatives. Our inferred phylogeny is robust and includes two major clades. The first includes a monophyletic Endiandra nested within a paraphyletic Australasian Beilschmiedia group. The second includes (i) a subclade of African Beilschmiedia plus Malagasy Potameia, (ii) a subclade of Asian species including Syndiclis and Sinopora, (iii) the lone Neotropical species B. immersinervis, (iv) a subclade of core Asian Beilschmiedia, sister to the Neotropical species B. brenesii, and v) two Asian species including B. turbinata and B. glauca. The rampant non-monophyly of Beilschmiedia we identify necessitates a major taxonomic realignment of the genus, including but not limited to the mergers of Brassiodendron and Sinopora into the genera Endiandra and Syndiclis, respectively. Along these lines, the high degree of continental, clade-wide endemism we identify suggests that geographical distribution may be a good proxy for delineating taxa within this group. Our molecular divergence time estimates indicate that stem Beilschmiedia group members date to the Early Eocene (similar to 50 Ma); their crown age dates to the Eocene-Oligocene boundary (similar to 34 Ma). These findings contradict older estimates of the group and support mounting evidence that the origin and diversification of many pantropical angiosperm clades are not easily attributed to strict western Gondwanan vicariance. Finally, our study highlights the phylogenetic utility of plastomes in Lauraceace, and lays a solid foundation for future phylogenomic and biogeographic investigations within the family.
关键词	Beilschmiedia group Lauraceae Molecular clock Plastome Phylogenomics Systematics
学科领域	Biochemistry & Molecular Biology ; Evolutionary Biology ; Genetics & Heredity
DOI	10.1016/j.ympev.2020.106901
收录类别	SCI
语种	英语
WOS关键词	CHLOROPLAST GENOME SEQUENCE ; SP-NOV ; PHYLOGENETIC-RELATIONSHIPS ; EOCENE ; GENUS ; CLASSIFICATION ; BIOGEOGRAPHY ; ORGANIZATION ; CINNAMOMUM ; DISPERSAL
WOS研究方向	Biochemistry & Molecular Biology ; Evolutionary Biology ; Genetics & Heredity
WOS记录号	WOS:000557888000001
出版者	ACADEMIC PRESS INC ELSEVIER SCIENCE
文献子类	Article
出版地	SAN DIEGO
EISSN	1095-9513
资助机构	National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31970205, 31470301, 31770211] ; China Scholarship CouncilChina Scholarship Council
作者邮箱	cdavis@oeb.harvard.edu ; 710309338@qq.com
引用统计	被引频次：18[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/2S10CLM1/21634
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 100093, Peoples R China 2.Davis, Charles C.] Harvard Univ Herbaria, Dept Organism & Evolutionary Biol, 22 Divin Ave, Cambridge, MA 02138 USA 3.Univ Chinese Acad Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Li, Haiwen,Liu, Bing,Davis, Charles C.,et al. Plastome phylogenomics, systematics, and divergence time estimation of the Beilschmiedia group (Lauraceae)[J]. MOLECULAR PHYLOGENETICS AND EVOLUTION,2020,151.
APA	Li, Haiwen,Liu, Bing,Davis, Charles C.,&Yang, Yong.(2020).Plastome phylogenomics, systematics, and divergence time estimation of the Beilschmiedia group (Lauraceae).MOLECULAR PHYLOGENETICS AND EVOLUTION,151.
MLA	Li, Haiwen,et al."Plastome phylogenomics, systematics, and divergence time estimation of the Beilschmiedia group (Lauraceae)".MOLECULAR PHYLOGENETICS AND EVOLUTION 151(2020).

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