A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Cold adaptation drives population genomic divergence in the ecological specialist, Drosophila montana (2021)
Wiberg, R. A. W., Tyukmaeva, V., Hoikkala, A., Ritchie, M. G., & Kankare, M. (2021). Cold adaptation drives population genomic divergence in the ecological specialist, Drosophila montana. Molecular Ecology, 30(15), 3783-3796. https://doi.org/10.1111/mec.16003
JYU-tekijät tai -toimittajat
Julkaisun tiedot
Julkaisun kaikki tekijät tai toimittajat: Wiberg, R. A. W.; Tyukmaeva, V.; Hoikkala, A.; Ritchie, M. G.; Kankare, M.
Lehti tai sarja: Molecular Ecology
ISSN: 0962-1083
eISSN: 1365-294X
Julkaisuvuosi: 2021
Ilmestymispäivä: 28.05.2021
Volyymi: 30
Lehden numero: 15
Artikkelin sivunumerot: 3783-3796
Kustantaja: Wiley
Julkaisumaa: Britannia
Julkaisun kieli: englanti
DOI: https://doi.org/10.1111/mec.16003
Julkaisun avoin saatavuus: Avoimesti saatavilla
Julkaisukanavan avoin saatavuus: Osittain avoin julkaisukanava
Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/77307
Tiivistelmä
Detecting signatures of ecological adaptation in comparative genomics is challenging, but analysing population samples with characterised geographic distributions, such as clinal variation, can help identify genes showing covariation with important ecological variation. Here we analysed patterns of geographic variation in the cold-adapted species Drosophila montana across phenotypes, genotypes and environmental conditions and tested for signatures of cold adaptation in population genomic divergence. We first derived the climatic variables associated with the geographic distribution of 24 populations across two continents to trace the scale of environmental variation experienced by the species, and measured variation in the cold tolerance of the flies of six populations from different geographic contexts. We then performed pooled whole genome sequencing of these six populations, and used Bayesian methods to identify SNPs where genetic differentiation is associated with both climatic variables and the population phenotypic measurements, while controlling for effects of demography and population structure. The top candidate SNPs were enriched on the X and 4th chromosomes, and they also lay near genes implicated in other studies of cold tolerance and population divergence in this species and its close relatives. We conclude that ecological adaptation has contributed to the divergence of D. montana populations throughout the genome and in particular on the X and 4th chromosomes, which also showed highest interpopulation FST. This study demonstrates that ecological selection can drive genomic divergence at different scales, from candidate genes to chromosome-wide effects.
YSO-asiasanat: sopeutuminen; muuntelu (biologia); geneettinen muuntelu; kylmänkestävyys; genomiikka; populaatiogenetiikka; mahlakärpäset
Vapaat asiasanat: CCRT; cline populations; cold tolerance; CTmin; D. montana; environmental adaptation; genomic divergence
Liittyvät organisaatiot
Hankkeet, joissa julkaisu on tehty
- Sopeutumiseen ja populaatioiden välisten
- Hoikkala, Anneli
- Suomen Akatemia
- Vaihtoehtoisen silmikoinnin merkitys muuttuviin elinympäristöihin sopeutumisessa
- Kankare, Maaria
- Suomen Akatemia
- Sterssinkeston genominen tausta
- Kankare, Maaria
- Suomen Akatemia
OKM-raportointi: Kyllä
Raportointivuosi: 2021
JUFO-taso: 3