Extensive standing genetic variation from a small number of founders enables rapid adaptation in Daphnia.
Details
Serval ID
serval:BIB_ED6049CBBDE6
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Extensive standing genetic variation from a small number of founders enables rapid adaptation in Daphnia.
Journal
Nature communications
ISSN
2041-1723 (Electronic)
ISSN-L
2041-1723
Publication state
Published
Issued date
14/07/2021
Peer-reviewed
Oui
Volume
12
Number
1
Pages
4306
Language
english
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: epublish
Publication Status: epublish
Abstract
We lack a thorough understanding of the origin and maintenance of standing genetic variation that enables rapid evolutionary responses of natural populations. Whole genome sequencing of a resurrected Daphnia population shows that standing genetic variation in over 500 genes follows an evolutionary trajectory that parallels the pronounced and rapid adaptive evolution of multiple traits in response to predator-driven natural selection and its subsequent relaxation. Genetic variation carried by only five founding individuals from the regional genotype pool is shown to suffice at enabling the observed evolution. Our results provide insight on how natural populations can acquire the genomic variation, through colonization by a few regional genotypes, that fuels rapid evolution in response to strong selection pressures. While these evolutionary responses in our study population involved hundreds of genes, we observed no evidence of genetic erosion.
Keywords
Adaptation, Physiological/genetics, Animals, Biological Evolution, Daphnia/genetics, Daphnia/physiology, Founder Effect, Gene Frequency, Genetic Variation, Genetics, Population, Genome/genetics, Genotype, Phenotype, Selection, Genetic
Pubmed
Web of science
Open Access
Yes
Create date
28/07/2021 11:20
Last modification date
08/08/2024 7:42