Historical assembly of Zygophyllaceae in the Atacama Desert

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Title:Main Title: Historical assembly of Zygophyllaceae in the Atacama Desert
Description:Abstract: The Atacama Desert harbors a unique arid-adapted flora with a high degree of endemism, the origin of which is poorly understood. In the Atacama Desert, Zygophyllaceae is represented by five endemic species: one member of Zygophylloideae: Fagonia chilensis; and four members of Larreoideae: Bulnesia chilensis and Porlieria chilensis, the only representatives in the Atacama Desert of genera with disjunct distributions between Argentina, Peru and Chile; and monotypic endemic genera Metharme lanata and Pintoa chilensis. Zygophyllaceae are thus a particularly suitable group for studying the historical assembly of the Atacama Desert flora as each of these species may represent independent biogeographical events. We made use of published as well as original plastid DNA sequences (rbcL, trnL-trnF & trnS-trnG) to reevaluate the phylogenetic relationships of the Atacama Zygophyllaceae. Bayesian divergence time estimates as implemented in BEAST2 and ancestral area reconstruction with the Dispersal Extinction Cladogenesis approach using BioGeoBEARS were applied to infer ancestral ranges. We compiled the most complete data set of Larreoideae to date with 25 of 28 species. Bulnesia rivas-martinezii from Bolivia forms a clade with Pintoa chilensis from the Atacama Desert rendering the genus Bulnesia paraphyletic. Most representatives of Zygophyllaceae colonized the Atacama Desert during the Miocene, and only Fagonia dispersed more recently. The colonization history of the Atacama Desert in South America is reflected by three individual distribution patterns or floristic elements. The presence of Bulnesia, Pintoa and Metharme is best explained by Andean vicariance, while the southern Atacama Desert representative, Porlieria chilensis, has a continuous distribution into central Chile from where it probably dispersed further north. The only South American Fagonia species (F. chilensis) likely colonized the Chilean-Peruvian Coastal Desert via long distance dispersal from North America.
Identifier:10.21425/F5FBG45197 (DOI)
Responsible Party
Creators:Tim Böhnert (Author), Maximilian Weigend (Author), Felix F. Merklinger (Author), Dietmar Quandt (Author), Federico Luebert (Author)
Publisher:Westlake Village CA: International Biogeography Society
Publication Year:2021
CRC1211 Topic:Biology
Related Subproject:B1
Subjects:Keywords: Biogeography, Evolution, Ecology of Plants
File Details
Data Type:Text - Article
File Size:2.8 MB
Date:Accepted: 28.04.2020
Mime Type:application/pdf
Data Format:PDF
Download Permission:Free
General Access and Use Conditions:According to the CRC1211DB data policy agreement.
Access Limitations:According to the CRC1211DB data policy agreement.
Specific Information - Publication
Publication Status:Published
Review Status:Peer reviewed
Publication Type:Article
Article Type:Journal
Source:Frontiers of Biogeography
Number of Pages:12 (1 - 12)
Metadata Details
Metadata Creator:Tim Böhnert
Metadata Created:28.01.2021
Metadata Last Updated:28.01.2021
Funding Phase:1
Metadata Language:English
Metadata Version:V50
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