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Divergent Selection and Local Adaptation in Disjunct Populations of an Endangered Conifer, Keteleeria davidiana var. formosana (Pinaceae)
- Source :
- PLoS ONE, PLoS ONE, Vol 8, Iss 7, p e70162 (2013)
- Publication Year :
- 2013
- Publisher :
- Public Library of Science, 2013.
-
Abstract
- The present study investigated the genetic diversity, population structure, F ST outliers, and extent and pattern of linkage disequilibrium in five populations of Keteleeria davidiana var. formosana, which is listed as a critically endangered species by the Council of Agriculture, Taiwan. Twelve amplified fragment length polymorphism primer pairs generated a total of 465 markers, of which 83.74% on average were polymorphic across populations, with a mean Nei's genetic diversity of 0.233 and a low level of genetic differentiation (approximately 6%) based on the total dataset. Linkage disequilibrium and HICKORY analyses suggested recent population bottlenecks and inbreeding in K. davidiana var. formosana. Both STRUCTURE and BAPS observed extensive admixture of individual genotypes among populations based on the total dataset in various clustering scenarios, which probably resulted from incomplete lineage sorting of ancestral variation rather than a high rate of recent gene flow. Our results based on outlier analysis revealed generally high levels of genetic differentiation and suggest that divergent selection arising from environmental variation has been driven by differences in temperature, precipitation, and humidity. Identification of ecologically associated outliers among environmentally disparate populations further support divergent selection and potential local adaptation.
- Subjects :
- Evolutionary Genetics
Linkage disequilibrium
Evolutionary Processes
Keteleeria davidiana
lcsh:Medicine
Population genetics
Evolutionary Selection
Parallel Evolution
Forms of Evolution
Divergent Evolution
Linkage Disequilibrium
Coalescent theory
Evolution, Molecular
Genetic variation
Natural Selection
Genetics
Amplified Fragment Length Polymorphism Analysis
Selection, Genetic
lcsh:Science
Biology
Local adaptation
Genetic diversity
Evolutionary Biology
Multidisciplinary
biology
Population Biology
Ecology
lcsh:R
Endangered Species
Computational Biology
Genetic Variation
Genomics
biology.organism_classification
Pinaceae
Adaptation, Physiological
Population bottleneck
Logistic Models
lcsh:Q
Population Genetics
Research Article
Subjects
Details
- Language :
- English
- ISSN :
- 19326203
- Volume :
- 8
- Issue :
- 7
- Database :
- OpenAIRE
- Journal :
- PLoS ONE
- Accession number :
- edsair.doi.dedup.....dca85588dc81886c1566fb56374c082a