Canary Grasses ( Phalaris, Poaceae): biogeography, molecular dating and the role of floret structure in dispersal
Abstract Canary grasses ( P halaris , P oaceae) include 21 species, widely spread throughout the temperate and subtropical regions of the world with two centres of diversity: the Mediterranean Basin and western North America. The genus contains annual and perennial, endemic, cosmopolitan, wild, and...
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crwiley:10.1111/mec.12575 2024-06-23T07:51:47+00:00 Canary Grasses ( Phalaris, Poaceae): biogeography, molecular dating and the role of floret structure in dispersal Voshell, Stephanie M. Hilu, Khidir W. 2013 http://dx.doi.org/10.1111/mec.12575 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fmec.12575 https://onlinelibrary.wiley.com/doi/pdf/10.1111/mec.12575 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor http://doi.wiley.com/10.1002/tdm_license_1 http://onlinelibrary.wiley.com/termsAndConditions Molecular Ecology volume 23, issue 1, page 212-224 ISSN 0962-1083 1365-294X journal-article 2013 crwiley https://doi.org/10.1111/mec.12575 2024-06-13T04:22:15Z Abstract Canary grasses ( P halaris , P oaceae) include 21 species, widely spread throughout the temperate and subtropical regions of the world with two centres of diversity: the Mediterranean Basin and western North America. The genus contains annual and perennial, endemic, cosmopolitan, wild, and invasive species with diploid, tetraploid and hexaploid cytotypes. As such, P halaris presents an ideal platform to study diversification via historic hybridization and polyploidy events, and geographical dispersal in grasses. We present the first empirical phylogeographic study for Phalaris testing current, intuitive hypotheses on the centres of origin, historic dispersal events and diversification within a geological timeframe. Bayesian methods ( beast , version 1.6.2) were used to establish divergence dates, and dispersal–vicariance analyses ( rasp , version 2.1b) were implemented for ancestral node reconstructions. Our phylogeographic results indicate that the genus emerged during the Miocene epoch [20.6–8.4 Ma (million years ago)] in the Mediterranean basin followed by dispersal and vicariance events to Africa, Asia and the Americas. We propose that a diploid ancestor of P. arundinacea migrated to western North America via the Bering Strait, where further diversification emerged in the New World. It appears that polyploidy played a major role in the evolution of the genus in the Old World, while diversification in the New World followed a primarily diploid pathway. Dispersal to various parts of the Americas followed different routes. Fertile florets with hairy protruding sterile lemmas showed significant correlation with wider geographical distribution. Article in Journal/Newspaper Bering Strait Wiley Online Library Bering Strait Molecular Ecology 23 1 212 224 |
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English |
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Abstract Canary grasses ( P halaris , P oaceae) include 21 species, widely spread throughout the temperate and subtropical regions of the world with two centres of diversity: the Mediterranean Basin and western North America. The genus contains annual and perennial, endemic, cosmopolitan, wild, and invasive species with diploid, tetraploid and hexaploid cytotypes. As such, P halaris presents an ideal platform to study diversification via historic hybridization and polyploidy events, and geographical dispersal in grasses. We present the first empirical phylogeographic study for Phalaris testing current, intuitive hypotheses on the centres of origin, historic dispersal events and diversification within a geological timeframe. Bayesian methods ( beast , version 1.6.2) were used to establish divergence dates, and dispersal–vicariance analyses ( rasp , version 2.1b) were implemented for ancestral node reconstructions. Our phylogeographic results indicate that the genus emerged during the Miocene epoch [20.6–8.4 Ma (million years ago)] in the Mediterranean basin followed by dispersal and vicariance events to Africa, Asia and the Americas. We propose that a diploid ancestor of P. arundinacea migrated to western North America via the Bering Strait, where further diversification emerged in the New World. It appears that polyploidy played a major role in the evolution of the genus in the Old World, while diversification in the New World followed a primarily diploid pathway. Dispersal to various parts of the Americas followed different routes. Fertile florets with hairy protruding sterile lemmas showed significant correlation with wider geographical distribution. |
format |
Article in Journal/Newspaper |
author |
Voshell, Stephanie M. Hilu, Khidir W. |
spellingShingle |
Voshell, Stephanie M. Hilu, Khidir W. Canary Grasses ( Phalaris, Poaceae): biogeography, molecular dating and the role of floret structure in dispersal |
author_facet |
Voshell, Stephanie M. Hilu, Khidir W. |
author_sort |
Voshell, Stephanie M. |
title |
Canary Grasses ( Phalaris, Poaceae): biogeography, molecular dating and the role of floret structure in dispersal |
title_short |
Canary Grasses ( Phalaris, Poaceae): biogeography, molecular dating and the role of floret structure in dispersal |
title_full |
Canary Grasses ( Phalaris, Poaceae): biogeography, molecular dating and the role of floret structure in dispersal |
title_fullStr |
Canary Grasses ( Phalaris, Poaceae): biogeography, molecular dating and the role of floret structure in dispersal |
title_full_unstemmed |
Canary Grasses ( Phalaris, Poaceae): biogeography, molecular dating and the role of floret structure in dispersal |
title_sort |
canary grasses ( phalaris, poaceae): biogeography, molecular dating and the role of floret structure in dispersal |
publisher |
Wiley |
publishDate |
2013 |
url |
http://dx.doi.org/10.1111/mec.12575 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fmec.12575 https://onlinelibrary.wiley.com/doi/pdf/10.1111/mec.12575 |
geographic |
Bering Strait |
geographic_facet |
Bering Strait |
genre |
Bering Strait |
genre_facet |
Bering Strait |
op_source |
Molecular Ecology volume 23, issue 1, page 212-224 ISSN 0962-1083 1365-294X |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor http://doi.wiley.com/10.1002/tdm_license_1 http://onlinelibrary.wiley.com/termsAndConditions |
op_doi |
https://doi.org/10.1111/mec.12575 |
container_title |
Molecular Ecology |
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23 |
container_issue |
1 |
container_start_page |
212 |
op_container_end_page |
224 |
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1802642917047664640 |