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The complex biogeographic history of a widespread tropical tree species
- Source :
- Evolution-International Journal of Organic Evolution, Evolution-International Journal of Organic Evolution, Wiley, 2008, 62 (11), pp.2760-2774. ⟨10.1111/j.1558-5646.2008.00506.x⟩, Repositorio de Resultados de Investigación del INIA, INIA: Repositorio de Resultados de Investigación del INIA, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria INIA
- Publication Year :
- 2008
- Publisher :
- HAL CCSD, 2008.
-
Abstract
- International audience; Many tropical forest tree species have broad geographic ranges, and fossil records indicate that population disjunctions in some species were established millions of years ago. Here we relate biogeographic history to patterns of population differentiation, mutational and demographic processes in the widespread rainforest tree Symphonia globulifera using ribosomal (ITS) and chloroplast DNA sequences and nuclear microsatellite (nSSR) loci. Fossil records document sweepstakes dispersal origins of Neotropical S. globulifera populations from Africa during the Miocene. Despite historical long-distance gene flow, nSSR differentiation across 13 populations from Costa Rica, Panama, Ecuador (east and west of Andes) and French Guiana was pronounced (F(ST)= 0.14, R(ST)= 0.39, P < 0.001) and allele-size mutations contributed significantly (R(ST) > F(ST)) to the divergences between cis- and trans-Andean populations. Both DNA sequence and nSSR data reflect contrasting demographic histories in lower Mesoamerica and Amazonia. Amazon populations show weak phylogeographic structure and deviation from drift-mutation equilibrium indicating recent population expansion. In Mesoamerica, genetic drift was strong and contributed to marked differentiation among populations. The genetic structure of S. globulifera contains fingerprints of drift-dispersal processes and phylogeographic footprints of geological uplifts and sweepstakes dispersal.
- Subjects :
- Costa Rica
0106 biological sciences
DNA, Plant
Mesoamerica
Panama
[SDV]Life Sciences [q-bio]
Population
Flowers
Rainforest
Population structure
Plant Roots
010603 evolutionary biology
01 natural sciences
Trees
Gene flow
Magnoliopsida
03 medical and health sciences
Genetics
Symphonia globulifera
education
Ecosystem
Phylogeny
Ecology, Evolution, Behavior and Systematics
DNA Primers
030304 developmental biology
Tropical Climate
0303 health sciences
education.field_of_study
Geography
biology
Ecology
Bayesian clustering
15. Life on land
biology.organism_classification
Phylogeography
Spain
Fruit
F ST
Seeds
Biological dispersal
Microsatellite
Tropical rainforests
General Agricultural and Biological Sciences
Microsatellite Repeats
Subjects
Details
- Language :
- English
- ISSN :
- 00143820 and 15585646
- Database :
- OpenAIRE
- Journal :
- Evolution-International Journal of Organic Evolution, Evolution-International Journal of Organic Evolution, Wiley, 2008, 62 (11), pp.2760-2774. ⟨10.1111/j.1558-5646.2008.00506.x⟩, Repositorio de Resultados de Investigación del INIA, INIA: Repositorio de Resultados de Investigación del INIA, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria INIA
- Accession number :
- edsair.doi.dedup.....bd5ba3f7e994669066f5919766043a51