干旱区生态环境知识资源中心(Arid): Genetic structure, phylogeography, and migration routes of Bouteloua gracilis (Kunth) Lag. ex Griffiths (Poaceae:Chloridoideae)

Arid

DOI	10.1016/j.ympev.2019.01.005
	Genetic structure, phylogeography, and migration routes of Bouteloua gracilis (Kunth) Lag. ex Griffiths (Poaceae:Chloridoideae)
	Avendano-Gonzalez, Marcela; Francisco Morales-Dominguez, Jose; Elena Siqueiros-Delgado, Maria
通讯作者	Elena Siqueiros-Delgado, Maria
来源期刊	MOLECULAR PHYLOGENETICS AND EVOLUTION
ISSN	1055-7903
EISSN	1095-9513
出版年	2019
卷号	134 页码:50-60
英文摘要	Blue grama grass (Bouteloua gracilis) populations are found in widely variable environments, tolerating drought, alkaline soils and different levels of grazing. Many ploidy levels have been reported for this species that is also considered to be phenotypically plastic and morphologically variable. Recently a decline in its cover and frequency in the North American shortgrass steppe and central Mexico has been reported although much about the biology of the species is unknown, including genetic diversity throughout its distribution. Genetic and phylogeographic structure and phylogenetic relationships among B. gracilis were estimated employing next generation sequencing of a high number of SNPs and loci. Population genetics and Structure analyses were performed. We compared the marginal likelihoods of different migration models using MIGRATE and obtained the best population model of migration for our data. Demographic expansion of B. gracilis was observed graphically with a mismatch distribution obtained in DNAsp. Bayesian and Maximum Likelihood methods were used to resolve phylogenetic relationships among B. gracilis and its closely related species as well as within B. gracilis populations. B. gracilis is sister to the B. chasei and B. herrera arrietae Glade. Among the populations of the species two highly supported clades were resolved, grouping samples from Mexico and USA respectively. Allele frequencies determined three population clusters: CUSA from the Great Plains, MEX from central and southern Mexico, and WUSA-NMEX from northern Mexico and the western mountainous region of USA, the latter of which contains an allele admixture of the other two clusters. The haplotype network revealed an ancestral haplotype originating in Mexico, from which the rest of the haplotypes diversified to the north. Both evidence of gene flow and isolation among populations was observed. Genetic clusters are not genetically structured and variation is higher among populations. The genetic and morphological data do not support recognition of ecotypes or infraespecific taxa. However, the Great Plains populations are least diverse, making them most vulnerable to environmental change.
英文关键词	Phylogeography Population genetics Bouteloua gracilis North American grasslands SNPs Genetic diversity
类型	Article
语种	英语
国家	Mexico
收录类别	SCI-E
WOS记录号	WOS:000461057700005
WOS关键词	POPULATION-STRUCTURE ; CHIHUAHUAN DESERT ; FORAGE PRODUCTION ; GRASSLAND ; PLASTICITY ; GROWTH ; FLOW ; HYPOTHESIS ; INFERENCE ; EVOLUTION
WOS类目	Biochemistry & Molecular Biology ; Evolutionary Biology ; Genetics & Heredity
WOS研究方向	Biochemistry & Molecular Biology ; Evolutionary Biology ; Genetics & Heredity
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/217667
作者单位	Univ Autonoma Aguascalientes, Av Univ 940, Aguascalientes 20130, Mexico
推荐引用方式 GB/T 7714	Avendano-Gonzalez, Marcela,Francisco Morales-Dominguez, Jose,Elena Siqueiros-Delgado, Maria. Genetic structure, phylogeography, and migration routes of Bouteloua gracilis (Kunth) Lag. ex Griffiths (Poaceae:Chloridoideae)[J],2019,134:50-60.
APA	Avendano-Gonzalez, Marcela,Francisco Morales-Dominguez, Jose,&Elena Siqueiros-Delgado, Maria.(2019).Genetic structure, phylogeography, and migration routes of Bouteloua gracilis (Kunth) Lag. ex Griffiths (Poaceae:Chloridoideae).MOLECULAR PHYLOGENETICS AND EVOLUTION,134,50-60.
MLA	Avendano-Gonzalez, Marcela,et al."Genetic structure, phylogeography, and migration routes of Bouteloua gracilis (Kunth) Lag. ex Griffiths (Poaceae:Chloridoideae)".MOLECULAR PHYLOGENETICS AND EVOLUTION 134(2019):50-60.