干旱区生态环境知识资源中心(Arid): Phylogeny, Diversification Rate, and Divergence Time of Agave sensu lato (Asparagaceae), a Group of Recent Origin in the Process of Diversification

Arid

DOI	10.3389/fpls.2020.536135
	Phylogeny, Diversification Rate, and Divergence Time of Agave sensu lato (Asparagaceae), a Group of Recent Origin in the Process of Diversification
	Jimenez-Barron, Ofelia; Garcia-Sandoval, Ricardo; Magallon, Susana; Garcia-Mendoza, Abisai; Nieto-Sotelo, Jorge; Aguirre-Planter, Erika; Eguiarte, Luis E.
通讯作者	Eguiarte, LE
来源期刊	FRONTIERS IN PLANT SCIENCE
ISSN	1664-462X
出版年	2020
卷号	11
英文摘要	Agave sensu lato is one of the most diverse and complex genera of Asparagaceae, with more than 250 species. The morphological, ecological, and evolutionary diversity of the group has complicated its taxonomical study. We conducted phylogenetic analyses of DNA sequence data to reconstruct the phylogenetic relationships of the Agave genus. We included 107 species of the Asparagaceae family from which 83 correspond to the Agave sensu lato clade (Agave sensu stricto + Polianthes + Manfreda and Prochnyanthes, which together represent 30% of the genus) and as outgroups the genera Dasylirion, Hesperoyucca, Chlorogalum, Camassia, Hesperaloe, Yucca, Beschorneria, and Furcraea, in order to estimate the age and propose the history of their diversification. Previous studies postulated the relevance of the Miocene in the speciation rates of the agaves, as well as the relevance of the type of inflorescence in its diversification. However, these assertions have not been well supported. The analysis of chloroplast regions resulted in low resolution, which could be the consequence of the few variable sites. On the other hand, the internal transcribed spacer (ITS) implemented in our analysis ensued in higher resolution and better support values. Our phylogenetic analyses recovered five groups; one is the Striatae group, which is the sister group to Agave sensu stricto clade. Within this clade, we found three main groups with high support; these groups are not related with previous morphological proposals. We also analyzed the dates of origin and diversification rates. A Bayesian analysis of macroevolutionary mixtures indicated two significant shifts; the first was identified at 6.18 Ma, where the speciation rate increased to 4.10 species/Mya, this shift occurred during the late Miocene period, characterized by the emergence of arid biomes in North America. The second was identified at a stem age of 2.68 Ma where the speciation rate increased to 6.04 species/Mya. Concerning the ancestral reconstruction state of the inflorescence type in the Agave sensu stricto clade, the spike inflorescence character was predominant in the early-diverging groups, whereas the late-diverging groups present panicle inflorescences as the predominant character and higher speciation rates.
英文关键词	evolutionary radiation comparative method extinction speciation inflorescence ancestral state reconstruction Bayesian inference ITS
类型	Article
语种	英语
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000591517300001
WOS关键词	SUBGENUS LITTAEA AGAVACEAE ; POLLINATION BIOLOGY ; REPRODUCTIVE ECOLOGY ; ADAPTIVE RADIATION ; RAPID DIVERSIFICATION ; CONVERGENT EVOLUTION ; CHLOROPLAST DNA ; AGAVOIDEAE ; INSIGHTS ; BATS
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
来源机构	Universidad Nacional Autónoma de México
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/327590
作者单位	[Jimenez-Barron, Ofelia; Aguirre-Planter, Erika; Eguiarte, Luis E.] Univ Nacl Autonoma Mexico, Dept Ecol Evolut, Lab Evoluc Mol & Expt, Inst Ecol, Ciudad Univ, Mexico City, DF, Mexico; [Garcia-Sandoval, Ricardo] Univ Nacl Autonoma Mexico, Fac Ciencias, Dept Biol, Ciudad Univ, Mexico City, DF, Mexico; [Magallon, Susana] Univ Nacl Autonoma Mexico, Dept Bot, Inst Biol, Ciudad Univ, Mexico City, DF, Mexico; [Garcia-Mendoza, Abisai; Nieto-Sotelo, Jorge] Univ Nacl Autonoma Mexico, Inst Biol, Jardin Bot, Mexico City, DF, Mexico
推荐引用方式 GB/T 7714	Jimenez-Barron, Ofelia,Garcia-Sandoval, Ricardo,Magallon, Susana,et al. Phylogeny, Diversification Rate, and Divergence Time of Agave sensu lato (Asparagaceae), a Group of Recent Origin in the Process of Diversification[J]. Universidad Nacional Autónoma de México,2020,11.
APA	Jimenez-Barron, Ofelia.,Garcia-Sandoval, Ricardo.,Magallon, Susana.,Garcia-Mendoza, Abisai.,Nieto-Sotelo, Jorge.,...&Eguiarte, Luis E..(2020).Phylogeny, Diversification Rate, and Divergence Time of Agave sensu lato (Asparagaceae), a Group of Recent Origin in the Process of Diversification.FRONTIERS IN PLANT SCIENCE,11.
MLA	Jimenez-Barron, Ofelia,et al."Phylogeny, Diversification Rate, and Divergence Time of Agave sensu lato (Asparagaceae), a Group of Recent Origin in the Process of Diversification".FRONTIERS IN PLANT SCIENCE 11(2020).