干旱区生态环境知识资源中心(Arid): Quaternary diversification of a columnar cactus in the driest place on earth

Arid

DOI	10.1002/ajb2.1608
	Quaternary diversification of a columnar cactus in the driest place on earth
	Merklinger, Felix F.; Boehnert, Tim; Arakaki, Monica; Weigend, Maximilian; Quandt, Dietmar; Luebert, Federico
通讯作者	Merklinger, FF (corresponding author), Univ Bonn, Nees Inst Biodivers Plants, Bonn, Germany. ; Merklinger, FF (corresponding author), Sukkulenten Sammlung Zurich Grun Stadt Zurich, Zurich, Switzerland.
来源期刊	AMERICAN JOURNAL OF BOTANY
ISSN	0002-9122
EISSN	1537-2197
出版年	2021
卷号	108 期号:2 页码:184-199
英文摘要	Premise The cactus family (Cactaceae) is a speciose lineage with an almost entirely New World distribution. The genus Eulychnia with eight currently recognized species is endemic to the Atacama and Peruvian Deserts. Here we investigated the phylogeny of this group based on a complete taxon sampling to elucidate species delimitation and biogeographic history of the genus. Methods A family-wide Bayesian molecular clock dating based on plastid sequence data was conducted to estimate the age of Eulychnia and its divergence from its sister genus Austrocactus. A second data set obtained from genotyping by sequencing (GBS) was analyzed, using the family-wide age estimate as a secondary calibration to date the GBS phylogeny using a penalized likelihood approach. Ancestral ranges were inferred employing the dispersal extinction cladogenesis approach. Results Our GBS phylogeny of Eulychnia was fully resolved with high support values nearly throughout the phylogeny. The split from Austrocactus occurred in the late Miocene, and Eulychnia diversified during the early Quaternary. Three lineages were retrieved: Eulychnia ritteri from Peru is sister to all Chilean species, which in turn fall into two sister clades of three and four species, respectively. Diversification in the Chilean clades started in the early Pleistocene. Eulychnia likely originated at the coastal range of its distribution and colonized inland locations several times. Conclusions Diversification of Eulychnia during the Pleistocene coincides with long periods of hyperaridity alternated with pluvial phases. Hyperaridity caused habitat fragmentation, ultimately leading to speciation and resulting in the current allopatric distribution of taxa.
英文关键词	arid environments biogeographic history Cactaceae Eulychnia genotyping by sequencing phylogeny speciation
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000617356700001
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/2XILL650/349429
作者单位	[Merklinger, Felix F.; Boehnert, Tim; Weigend, Maximilian; Quandt, Dietmar; Luebert, Federico] Univ Bonn, Nees Inst Biodivers Plants, Bonn, Germany; [Arakaki, Monica] Univ Nacl Mayor San Marcos, Museo Hist Nat, Lima, Peru; [Quandt, Dietmar] Leibniz Inst Plant Genet & Crop Plant Res IPK, Gatersleben, Germany; [Luebert, Federico] Univ Chile, Dept Silvicultura Conservac & Nat Leza, Santiago, Chile; [Merklinger, Felix F.] Sukkulenten Sammlung Zurich Grun Stadt Zurich, Zurich, Switzerland
推荐引用方式 GB/T 7714	Merklinger, Felix F.,Boehnert, Tim,Arakaki, Monica,et al. Quaternary diversification of a columnar cactus in the driest place on earth[J],2021,108(2):184-199.
APA	Merklinger, Felix F.,Boehnert, Tim,Arakaki, Monica,Weigend, Maximilian,Quandt, Dietmar,&Luebert, Federico.(2021).Quaternary diversification of a columnar cactus in the driest place on earth.AMERICAN JOURNAL OF BOTANY,108(2),184-199.
MLA	Merklinger, Felix F.,et al."Quaternary diversification of a columnar cactus in the driest place on earth".AMERICAN JOURNAL OF BOTANY 108.2(2021):184-199.