Genomics of Clinal Local Adaptation in Pinus sylvestris Under Continuous Environmental and Spatial Genetic Setting
| Autor: | Zhen Li, Juan J. Acosta, Jaana Vuosku, Tanja Pyhäjärvi, Jaakko S Tyrmi, María Teresa Cervera, Lieven Sterck, Outi Savolainen |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
SELECTION LINKAGE DISEQUILIBRIUM Range (biology) population genetics - empirical Species distribution adaptation QH426-470 01 natural sciences pinus sylvestris Nucleotide diversity POPULUS-TRICHOCARPA Genetics(clinical) NUCLEOTIDE DIVERSITY Genetics (clinical) 0303 health sciences QUANTITATIVE TRAIT LOCI targeted dna sequencing Pinus sylvestris Genomics Structural Variation Adaptation Physiological CLIMATIC ADAPTATION local adaptation gymnosperms Local adaptation Climatic adaptation MOLECULAR MARKERS Investigations Biology 010603 evolutionary biology population genetics – empirical 03 medical and health sciences Targeted DNA Sequencing Genetics POPULATION-STRUCTURE Selection Genetic Keystone species SCOTS PINE Molecular Biology Ecosystem 030304 developmental biology Genetic diversity Human evolutionary genetics COMPLEX TRAITS structural variation Genetic Variation Biology and Life Sciences landscape genetics 15. Life on land Pinus Genetics Population Evolutionary biology Tree breeding Adaptation |
| Zdroj: | G3: Genes, Genomes, Genetics, Vol 10, Iss 8, Pp 2683-2696 (2020) G3-GENES GENOMES GENETICS G3: Genes|Genomes|Genetics |
| ISSN: | 2160-1836 |
| Popis: | Understanding the consequences of local adaptation at the genomic diversity is a central goal in evolutionary genetics of natural populations. In species with large continuous geographical distributions the phenotypic signal of local adaptation is frequently clear, but the genetic background often remains elusive. We examined the patterns of genetic diversity inPinus sylvestris, a keystone species in many Eurasian ecosystems with a huge distribution range and decades of forestry research showing that it is locally adapted to the vast range of environmental conditions. MakingP. sylvestrisan even more attractive subject of local adaptation study, population structure has been shown to be weak previously and in this study. However, little is known about the molecular genetic basis of adaptation, as the massive size of gymnosperm genomes has prevented large scale genomic surveys. We generated a both geographically and genomically extensive dataset using a targeted sequencing approach. By applying divergence-based and landscape genomics methods we found that several coding loci contribute to local adaptation. We also discovered a very large (ca. 300 Mbp) putative inversion with a signal of local adaptation, which to our knowledge is the first such discovery in conifers. Our results call for more detailed analysis of structural variation in relation to genomic basis of local adaptation, emphasize the lack of large effect loci contributing to local adaptation in the coding regions and thus point out to the need for more attention towards multi-locus analysis of polygenic adaptation. |
| Databáze: | OpenAIRE |
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