Phylogeny and Biogeography of the Carnivorous Plant Family Sarraceniaceae
| Autor: | Patrick J. Calie, Aaron M. Ellison, Robert F. C. Naczi, Charles D. Bell, Emily Jean Hicks, Charles C. Davis, Elena D. Butler |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
0106 biological sciences
Atmospheric Science Plant Evolution Biogeography Climate Change lcsh:Medicine Plant Science 010603 evolutionary biology 01 natural sciences Cladistics Heliamphora 03 medical and health sciences Monophyly Molecular Systematics Evolutionary Systematics lcsh:Science Biology Phylogeny 030304 developmental biology 2. Zero hunger Sarracenia Climatology 0303 health sciences Carnivorous plant Evolutionary Biology Multidisciplinary biology Ecology Geography lcsh:R Disjunct distribution Botany Plant Taxonomy 15. Life on land biology.organism_classification Phylogenetics Phylogeography Evolutionary Ecology Sarraceniaceae Earth Sciences lcsh:Q Research Article |
| Zdroj: | PLoS ONE PLoS ONE, Vol 7, Iss 6, p e39291 (2012) |
| ISSN: | 1932-6203 |
| Popis: | The carnivorous plant family Sarraceniaceae comprises three genera of wetland-inhabiting pitcher plants: Darlingtonia in the northwestern United States, Sarracenia in eastern North America, and Heliamphora in northern South America. Hypotheses concerning the biogeographic history leading to this unusual disjunct distribution are controversial, in part because genus- and species-level phylogenies have not been clearly resolved. Here, we present a robust, species-rich phylogeny of Sarraceniaceae based on seven mitochondrial, nuclear, and plastid loci, which we use to illuminate this family's phylogenetic and biogeographic history. The family and genera are monophyletic: Darlingtonia is sister to a clade consisting of Heliamphora+Sarracenia. Within Sarracenia, two clades were strongly supported: one consisting of S. purpurea, its subspecies, and S. rosea; the other consisting of nine species endemic to the southeastern United States. Divergence time estimates revealed that stem group Sarraceniaceae likely originated in South America 44-53 million years ago (Mya) (highest posterior density [HPD] estimate = 47 Mya). By 25-44 (HPD = 35) Mya, crown-group Sarraceniaceae appears to have been widespread across North and South America, and Darlingtonia (western North America) had diverged from Heliamphora+Sarracenia (eastern North America+South America). This disjunction and apparent range contraction is consistent with late Eocene cooling and aridification, which may have severed the continuity of Sarraceniaceae across much of North America. Sarracenia and Heliamphora subsequently diverged in the late Oligocene, 14-32 (HPD = 23) Mya, perhaps when direct overland continuity between North and South America became reduced. Initial diversification of South American Heliamphora began at least 8 Mya, but diversification of Sarracenia was more recent (2-7, HPD = 4 Mya); the bulk of southeastern United States Sarracenia originated co-incident with Pleistocene glaciation |
| Databáze: | OpenAIRE |
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