Divergent Selection and Local Adaptation in Disjunct Populations of an Endangered Conifer, Keteleeria davidiana var. formosana (Pinaceae)

Jing Yu Fang, Jeng Der Chung, Yu Chung Chiang, Chung Te Chang, Chia Ying Chen, Shih Ying Hwang

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

The present study investigated the genetic diversity, population structure, FST 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.

Original languageEnglish
Article numbere70162
JournalPLoS ONE
Volume8
Issue number7
DOIs
Publication statusPublished - 2013 Jul 22

Fingerprint

Pinaceae
Coniferophyta
Precipitation (meteorology)
Polymorphism
Sorting
Agriculture
conifers
Atmospheric humidity
Genes
genetic variation
Population
linkage disequilibrium
Linkage Disequilibrium
Temperature
Endangered Species
Inbreeding
Gene Flow
endangered species
sorting
inbreeding

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Agricultural and Biological Sciences(all)
  • General

Cite this

Divergent Selection and Local Adaptation in Disjunct Populations of an Endangered Conifer, Keteleeria davidiana var. formosana (Pinaceae). / Fang, Jing Yu; Chung, Jeng Der; Chiang, Yu Chung; Chang, Chung Te; Chen, Chia Ying; Hwang, Shih Ying.

In: PLoS ONE, Vol. 8, No. 7, e70162, 22.07.2013.

Research output: Contribution to journalArticle

Fang, Jing Yu ; Chung, Jeng Der ; Chiang, Yu Chung ; Chang, Chung Te ; Chen, Chia Ying ; Hwang, Shih Ying. / Divergent Selection and Local Adaptation in Disjunct Populations of an Endangered Conifer, Keteleeria davidiana var. formosana (Pinaceae). In: PLoS ONE. 2013 ; Vol. 8, No. 7.
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