Genome-wide genetic diversity yields insights into genomic responses of candidate climate-selected loci in an Andean wetland plant
Autor: | Catalina Bustamante, Nicolas Gouin, Alejandra J. Troncoso, Mara I. Espinosa, Angéline Bertin |
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Rok vydání: | 2020 |
Předmět: |
0106 biological sciences
0301 basic medicine Population genetics Climate Population lcsh:Medicine Single-nucleotide polymorphism Biology Evolutionary ecology 010603 evolutionary biology 01 natural sciences Genome Polymorphism Single Nucleotide Article 03 medical and health sciences Genetic variation Allele Selection Genetic education lcsh:Science Gene Selection (genetic algorithm) Alleles Ecosystem education.field_of_study Genetic diversity Multidisciplinary lcsh:R Genetic Variation Genomics Biological Evolution 030104 developmental biology Evolutionary biology Wetlands lcsh:Q Molecular ecology Carex Plant Genome Plant Genome-Wide Association Study |
Zdroj: | Scientific Reports Scientific Reports, Vol 10, Iss 1, Pp 1-8 (2020) |
ISSN: | 2045-2322 |
Popis: | Assessing population evolutionary potential has become a central tenet of conservation biology. Since adaptive responses require allelic variation at functional genes, consensus has grown that genetic variation at genes under selection is a better surrogate for adaptive evolutionary potential than neutral genetic diversity. Although consistent with prevailing theory, this argument lacks empirical support and ignores recent theoretical advances questioning the very concept of neutral genetic diversity. In this study, we quantified genome-wide responses of single nucleotide polymorphism loci linked to climatic factors over a strong latitudinal gradient in natural populations of the high Andean wetland plant, Carex gayana, and then assessed whether genetic variation of candidate climate-selected loci better predicted their genome-wide responses than genetic variation of non-candidate loci. Contrary to this expectation, genomic responses of climate-linked loci only related significantly to environmental variables and genetic diversity of non-candidate loci. The effects of genome-wide genetic diversity detected in this study may be a result of either the combined influence of small effect variants or neutral and demographic factors altering the adaptive evolutionary potential of C. gayana populations. Regardless of the processes involved, our results redeem genome-wide genetic diversity as a potentially useful indicator of population adaptive evolutionary potential. |
Databáze: | OpenAIRE |
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