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Campo DC | Valor | Lengua/Idioma |
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dc.contributor.author | Flagel, Lex E. | - |
dc.contributor.author | Rapp, Ryan A. | - |
dc.contributor.author | Grover, Corrinne E. | - |
dc.contributor.author | Widrlechner, Mark P. | - |
dc.contributor.author | Hawkins, Jennifer | - |
dc.contributor.author | Grafenberg, Jessie L. | - |
dc.contributor.author | Álvarez, Inés | - |
dc.contributor.author | Chung, Gyu Young | - |
dc.contributor.author | Wendel, Jonathan F. | - |
dc.date.accessioned | 2009-07-17T07:56:51Z | - |
dc.date.available | 2009-07-17T07:56:51Z | - |
dc.date.issued | 2008 | - |
dc.identifier.citation | American Journal of Botany 95(6): 756-765 (2008) | en_US |
dc.identifier.issn | 0002-9122 | - |
dc.identifier.uri | http://hdl.handle.net/10261/15034 | - |
dc.description | 10 pages, 2 figures, 4 tables, 1 appendix.-- Supporting information (2 files) available at: http://www.amjbot.org/cgi/content/full/95/6/756/DC1 | en_US |
dc.description.abstract | The study of recently formed species is important because it can help us to better understand organismal divergence and the speciation process. However, these species often present difficult challenges in the field of molecular phylogenetics because the processes that drive molecular divergence can lag behind phenotypic divergence. In the current study we show that species of the recently diverged North American endemic genus of purple coneflower, Echinacea, have low levels of molecular divergence. Data from three nuclear loci and two plastid loci provide neither resolved topologies nor congruent hypotheses about species-level relationships. This lack of phylogenetic resolution is likely due to the combined effects of incomplete lineage sorting, hybridization, and backcrossing following secondary contact. The poor resolution provided by molecular markers contrasts previous studies that found well-resolved and taxonomically supported relationships from metabolic and morphological data. These results suggest that phenotypic canalization, resulting in identifiable morphological species, has occurred rapidly within Echinacea. Conversely, molecular signals have been distorted by gene flow and incomplete lineage sorting. Here we explore the impact of natural history on the genetic organization and phylogenetic relationships of Echinacea. | en_US |
dc.description.sponsorship | This journal paper of the Iowa Agriculture and Home Economics Experiment Station, Ames, Iowa, Project No. 1018, was supported by Hatch Act and State of Iowa funds and was made possible by grant number P01ES012020 from the National Institute of Environmental Health Sciences (NIEHS) and the Office of Dietary Supplements (ODS), NIH. | en_US |
dc.format.extent | 2039679 bytes | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | en_US |
dc.publisher | Botanical Society of America | en_US |
dc.rights | openAccess | en_US |
dc.subject | Asteraceae | en_US |
dc.subject | Chloroplast DNA | en_US |
dc.subject | Echinacea | en_US |
dc.subject | Incomplete lineage sorting | en_US |
dc.subject | Phylogenetics | en_US |
dc.subject | Single-copy nuclear DNA | en_US |
dc.title | Phylogenetic, morphological, and chemotaxonomic incongruence in the North American endemic genus Echinacea | en_US |
dc.type | artículo | en_US |
dc.identifier.doi | 10.3732/ajb.0800049 | - |
dc.description.peerreviewed | Peer reviewed | en_US |
dc.relation.publisherversion | http://dx.doi.org/10.3732/ajb.0800049 | en_US |
dc.contributor.funder | National Institute of Environmental Health Sciences (US) | - |
dc.identifier.funder | http://dx.doi.org/10.13039/100000066 | es_ES |
dc.type.coar | http://purl.org/coar/resource_type/c_6501 | es_ES |
item.openairetype | artículo | - |
item.grantfulltext | open | - |
item.cerifentitytype | Publications | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
item.languageiso639-1 | en | - |
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756.pdf | 1,99 MB | Adobe PDF | Visualizar/Abrir |
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