干旱区生态环境知识资源中心(Arid): Genetic and morphological differentiation in Washingtonia (Arecaceae): solving a century-old palm mystery

Arid

DOI	10.1093/botlinnean/boab009
	Genetic and morphological differentiation in Washingtonia (Arecaceae): solving a century-old palm mystery
	Villanueva-Almanza, Lorena; Landis, Jacob B.; Koenig, Daniel; Ezcurra, Exequiel
通讯作者	Villanueva-Almanza, L (corresponding author), Univ Calif Riverside, Bot & Plant Sci, Riverside, CA 92521 USA.
来源期刊	BOTANICAL JOURNAL OF THE LINNEAN SOCIETY
ISSN	0024-4074
EISSN	1095-8339
出版年	2021
卷号	196 期号:4 页码:506-523
英文摘要	Washingtonia is a genus of palms currently composed of two species, W. filifera and W. robusta, distributed in the States of Baja California, Baja California Sur, and Sonora in Mexico, and Southern California and Arizona in the United States. The group has been a taxonomic challenge due to a lack of type specimens, incomplete protologues, highly variable vegetative morphology, human dispersal of seeds, limited fieldwork in native populations and poor representation in herbaria. Here, we analyse the population structure and phylogenetic relationships and test whether morphological traits correlate with genetic variation throughout its distributional range. We used genotyping-by-sequencing (GBS) data to identify population structure and delimit species. We further used these data to determine whether morphological traits varied among genetic regions. We analysed 188 individuals from 21 populations of Washingtonia across its distribution range using multivariate and Bayesian methods. Our results showed great consistency in the discovery of four genetic groups: (1) Southern Peninsula, (2) Mid-Peninsula, (3) Northern Peninsula and (4) Sonoran mainland. The geographical limits to these clusters coincide very well with the large natural regions of the Sonoran Desert. Our analyses indicate that Washingtonia populations are highly structured within four major geographical regions. Even when no single morphological trait can be used to determine the genetic identity of Washingtonia palms, leaf greenness, a novel morphological trait, can be useful. Our results provide a robust phylogenetic analysis of Washingtonia settling a taxonomic debate that has lasted over a century.
英文关键词	Arecaceae Baja California Peninsula genotyping-by-sequencing population structure Sonoran Desert taxonomy
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000684042200005
WOS关键词	R-PACKAGE ; TOOL SET ; VICARIANCE ; EVOLUTION ; PATTERNS ; ECOLOGY ; HISTORY ; FORMAT ; OASES ; BIAS
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/362736
作者单位	[Villanueva-Almanza, Lorena; Landis, Jacob B.; Koenig, Daniel; Ezcurra, Exequiel] Univ Calif Riverside, Bot & Plant Sci, Riverside, CA 92521 USA; [Koenig, Daniel] Univ Calif Riverside, Inst Integrat Genome Biol, Riverside, CA 92521 USA; [Koenig, Daniel] Univ Calif Riverside, Ctr Plant Cell Biol, Riverside, CA 92521 USA
推荐引用方式 GB/T 7714	Villanueva-Almanza, Lorena,Landis, Jacob B.,Koenig, Daniel,et al. Genetic and morphological differentiation in Washingtonia (Arecaceae): solving a century-old palm mystery[J],2021,196(4):506-523.
APA	Villanueva-Almanza, Lorena,Landis, Jacob B.,Koenig, Daniel,&Ezcurra, Exequiel.(2021).Genetic and morphological differentiation in Washingtonia (Arecaceae): solving a century-old palm mystery.BOTANICAL JOURNAL OF THE LINNEAN SOCIETY,196(4),506-523.
MLA	Villanueva-Almanza, Lorena,et al."Genetic and morphological differentiation in Washingtonia (Arecaceae): solving a century-old palm mystery".BOTANICAL JOURNAL OF THE LINNEAN SOCIETY 196.4(2021):506-523.