干旱区生态环境知识资源中心(Arid): Phylogeography and Genetic Diversity in a Southern North American Desert:Agave kerchoveiFrom the Tehuacan-Cuicatlan Valley, Mexico

Arid

DOI	10.3389/fpls.2020.00863
	Phylogeography and Genetic Diversity in a Southern North American Desert:Agave kerchoveiFrom the Tehuacan-Cuicatlan Valley, Mexico
	Aguirre-Planter, Erika; Gilberto Parra-Leyva, J.; Ramirez-Barahona, Santiago; Scheinvar, Enrique; Lira-Saade, Rafael; 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	The Tehuacan-Cuicatlan Valley, located at the southeast of the state of Puebla and the northeast of the state of Oaxaca in Central Mexico, south of the Trans-Mexican Volcanic Belt (TMVB), is of particular interest for understanding the evolutionary dynamics of arid and semi-arid environments, being one of the main reservoirs of biological diversity for the arid zones of North America, including the highest diversity of Agavaceae worldwide and high levels of endemism. Studying in detail the phylogeography, environmental history and population genetics of representative species will hopefully shed light on the evolutionary and ecological dynamics that generated the tremendous biodiversity and endemism of this important region in Mexico. We sequenced three non-coding regions of chloroplast genome ofAgave kerchovei, a representative species of the Tehuacan Valley, generating 2,188 bp from 128 individuals sampled from eight populations throughout the species range. We used this data set to (i) characterize the levels of genetic diversity and genetic structure inA. kerchovei; (ii) predict the distribution ofA. kerchoveifor the present day, and to reconstruct the past geographical history of the species by constructing ecological niche models (ENM); and (iii) compare the levels of diversity in this species with those estimated for the widely distributedAgave lechuguilla.Agave kerchoveihas high levels of total chloroplast genetic variation (Hd= 0.718), especially considering that it is a species with a very restricted distribution. However, intrapopulation diversity is low (zero in some populations), and genetic structure is high (F-ST= 0.928,G(ST)= 0.824), which can be expected for endemic species with isolated populations. Our data suggest that Pleistocene glacial cycles have played an important role in the distribution ofA. kerchovei, where the climatic variability of the region - likely associated with its topographic complexity - had a significant effect on the levels of genetic diversity and population dynamics, while the potential distribution of the species seems to be stable since the middle Holocene (6 kya). We conclude that inA. kerchoveithere is a core group of populations in the Tehuacan Valley, and peripheric populations that appear to be evolving independently and thus the species is fundamentally an endemic species from the Tehuacan Valley while the populations outside the Valley appear to be in the process of incipient speciation.
英文关键词	Tehuacan-Cuicatlan Agave species distribution models incipient speciation population genetics Pleistocene endemic
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:000553955600001
WOS关键词	POPULATION-GENETICS ; CHIHUAHUAN DESERT ; NONCODING REGIONS ; AGAVE ; DIFFERENTIATION ; CONSEQUENCES ; ECOREGIONS ; HISTORY ; REFUGIA ; SYSTEM
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/2XILL650/325294
作者单位	[Aguirre-Planter, Erika; Gilberto Parra-Leyva, J.; Scheinvar, Enrique; Eguiarte, Luis E.] Univ Nacl Autanoma Mexico, Inst Ecol, Dept Ecol Evolut, Lab Evoluc Mol & Expt, Mexico City, DF, Mexico; [Ramirez-Barahona, Santiago] Univ Nacl Autonoma Mexico, Dept Bot, Inst Biol, Mexico City, DF, Mexico; [Lira-Saade, Rafael] Univ Nacl Autonoma Mexico, Unidad Biotecnol & Prototipos, Fac Estudios Super Iztacala, Mexico City, DF, Mexico
推荐引用方式 GB/T 7714	Aguirre-Planter, Erika,Gilberto Parra-Leyva, J.,Ramirez-Barahona, Santiago,et al. Phylogeography and Genetic Diversity in a Southern North American Desert:Agave kerchoveiFrom the Tehuacan-Cuicatlan Valley, Mexico[J]. Universidad Nacional Autónoma de México,2020,11.
APA	Aguirre-Planter, Erika,Gilberto Parra-Leyva, J.,Ramirez-Barahona, Santiago,Scheinvar, Enrique,Lira-Saade, Rafael,&Eguiarte, Luis E..(2020).Phylogeography and Genetic Diversity in a Southern North American Desert:Agave kerchoveiFrom the Tehuacan-Cuicatlan Valley, Mexico.FRONTIERS IN PLANT SCIENCE,11.
MLA	Aguirre-Planter, Erika,et al."Phylogeography and Genetic Diversity in a Southern North American Desert:Agave kerchoveiFrom the Tehuacan-Cuicatlan Valley, Mexico".FRONTIERS IN PLANT SCIENCE 11(2020).