Data from: A phylogeny of the genus Amaranthus (Amaranthaceae), based on several low-copy nuclear loci and chloroplast regions
The genus Amaranthus (pigweeds) is a group of ∼74 monoecious or dioecious annual species native to every continent but Antarctica, frequently associated with natural and human disturbance, with several economically important domesticated and weedy species. We set out to reconstruct the phylogeny of...
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ftdryad:oai:v1.datadryad.org:10255/dryad.165939 2023-05-15T13:44:27+02:00 Data from: A phylogeny of the genus Amaranthus (Amaranthaceae), based on several low-copy nuclear loci and chloroplast regions Waselkov, Katherine E. Boleda, Alexis S. Olsen, Kenneth M. Galapagos 2018-07-02T12:07:18Z http://hdl.handle.net/10255/dryad.165939 https://doi.org/10.5061/dryad.156j4 unknown doi:10.5061/dryad.156j4/2 doi:10.1600/036364418X697193 doi:10.5061/dryad.156j4 Waselkov KE, Boleda AS, Olsen KM (2018) A phylogeny of the genus Amaranthus (Amaranthaceae), based on several low-copy nuclear loci and chloroplast regions. Systematic Botany 43(2): 439-458. http://hdl.handle.net/10255/dryad.165939 Topology testing chloroplast capture dioecy pigweeds Article 2018 ftdryad https://doi.org/10.5061/dryad.156j4 https://doi.org/10.5061/dryad.156j4/2 https://doi.org/10.1600/036364418X697193 2020-01-01T16:01:53Z The genus Amaranthus (pigweeds) is a group of ∼74 monoecious or dioecious annual species native to every continent but Antarctica, frequently associated with natural and human disturbance, with several economically important domesticated and weedy species. We set out to reconstruct the phylogeny of Amaranthus, with broad geographic sampling, in order to answer questions about biogeographic relationships in the genus and the monophyly of the subgenera. Fifty-eight species were included inmaximum parsimony and Bayesian phylogenetic analyses based on ITS and three low-copy nuclear genes (A36, G3PDH, and Waxy), as well as two chloroplast regions (trnL5′-trnL3′ and matK/trnK). Topology tests were also employed to test taxonomic hypotheses about incongruence between trees and the monophyly of clades containing Galápagos species. Our analyses support the origin of the genus in the Americas, with a single long-distance dispersal event to the Old World, and both nuclear and chloroplast trees recover three to fourmajor clades, roughly corresponding to three subgenera recognized based on morphology. However, there are species in all of these clades that were not predicted based on morphology, and we discover previously unsuspected relationships between Galápagos species and species from the North American Southwest, which comprise small monophyletic groups outside of the three recognized subgenera. Additionally, an important herbicide resistant weed species (A. palmeri) and its sister species are placed into different large clades based on nuclear or chloroplast data, suggesting a chloroplast capture event. These results will provide a basis for further exploration of the evolution of weedy ecological strategies in the group. Article in Journal/Newspaper Antarc* Antarctica Dryad Digital Repository (Duke University) Galapagos |
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Open Polar |
collection |
Dryad Digital Repository (Duke University) |
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ftdryad |
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unknown |
topic |
Topology testing chloroplast capture dioecy pigweeds |
spellingShingle |
Topology testing chloroplast capture dioecy pigweeds Waselkov, Katherine E. Boleda, Alexis S. Olsen, Kenneth M. Data from: A phylogeny of the genus Amaranthus (Amaranthaceae), based on several low-copy nuclear loci and chloroplast regions |
topic_facet |
Topology testing chloroplast capture dioecy pigweeds |
description |
The genus Amaranthus (pigweeds) is a group of ∼74 monoecious or dioecious annual species native to every continent but Antarctica, frequently associated with natural and human disturbance, with several economically important domesticated and weedy species. We set out to reconstruct the phylogeny of Amaranthus, with broad geographic sampling, in order to answer questions about biogeographic relationships in the genus and the monophyly of the subgenera. Fifty-eight species were included inmaximum parsimony and Bayesian phylogenetic analyses based on ITS and three low-copy nuclear genes (A36, G3PDH, and Waxy), as well as two chloroplast regions (trnL5′-trnL3′ and matK/trnK). Topology tests were also employed to test taxonomic hypotheses about incongruence between trees and the monophyly of clades containing Galápagos species. Our analyses support the origin of the genus in the Americas, with a single long-distance dispersal event to the Old World, and both nuclear and chloroplast trees recover three to fourmajor clades, roughly corresponding to three subgenera recognized based on morphology. However, there are species in all of these clades that were not predicted based on morphology, and we discover previously unsuspected relationships between Galápagos species and species from the North American Southwest, which comprise small monophyletic groups outside of the three recognized subgenera. Additionally, an important herbicide resistant weed species (A. palmeri) and its sister species are placed into different large clades based on nuclear or chloroplast data, suggesting a chloroplast capture event. These results will provide a basis for further exploration of the evolution of weedy ecological strategies in the group. |
format |
Article in Journal/Newspaper |
author |
Waselkov, Katherine E. Boleda, Alexis S. Olsen, Kenneth M. |
author_facet |
Waselkov, Katherine E. Boleda, Alexis S. Olsen, Kenneth M. |
author_sort |
Waselkov, Katherine E. |
title |
Data from: A phylogeny of the genus Amaranthus (Amaranthaceae), based on several low-copy nuclear loci and chloroplast regions |
title_short |
Data from: A phylogeny of the genus Amaranthus (Amaranthaceae), based on several low-copy nuclear loci and chloroplast regions |
title_full |
Data from: A phylogeny of the genus Amaranthus (Amaranthaceae), based on several low-copy nuclear loci and chloroplast regions |
title_fullStr |
Data from: A phylogeny of the genus Amaranthus (Amaranthaceae), based on several low-copy nuclear loci and chloroplast regions |
title_full_unstemmed |
Data from: A phylogeny of the genus Amaranthus (Amaranthaceae), based on several low-copy nuclear loci and chloroplast regions |
title_sort |
data from: a phylogeny of the genus amaranthus (amaranthaceae), based on several low-copy nuclear loci and chloroplast regions |
publishDate |
2018 |
url |
http://hdl.handle.net/10255/dryad.165939 https://doi.org/10.5061/dryad.156j4 |
op_coverage |
Galapagos |
geographic |
Galapagos |
geographic_facet |
Galapagos |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_relation |
doi:10.5061/dryad.156j4/2 doi:10.1600/036364418X697193 doi:10.5061/dryad.156j4 Waselkov KE, Boleda AS, Olsen KM (2018) A phylogeny of the genus Amaranthus (Amaranthaceae), based on several low-copy nuclear loci and chloroplast regions. Systematic Botany 43(2): 439-458. http://hdl.handle.net/10255/dryad.165939 |
op_doi |
https://doi.org/10.5061/dryad.156j4 https://doi.org/10.5061/dryad.156j4/2 https://doi.org/10.1600/036364418X697193 |
_version_ |
1766201935803711488 |