RRC ID 57585
著者 Exposito-Alonso M, 500 Genomes Field Experiment Team, Burbano HA, Bossdorf O, Nielsen R, Weigel D.
タイトル Natural selection on the Arabidopsis thaliana genome in present and future climates.
ジャーナル Nature
Abstract Through the lens of evolution, climate change is an agent of natural selection that forces populations to change and adapt, or face extinction. However, current assessments of the risk of biodiversity associated with climate change1 do not typically take into account how natural selection influences populations differently depending on their genetic makeup2. Here we make use of the extensive genome information that is available for Arabidopsis thaliana and measure how manipulation of the amount of rainfall affected the fitness of 517 natural Arabidopsis lines that were grown in Spain and Germany. This allowed us to directly infer selection along the genome3. Natural selection was particularly strong in the hot-dry location in Spain, where 63% of lines were killed and where natural selection substantially changed the frequency of approximately 5% of all genome-wide variants. A significant portion of this climate-driven natural selection of variants was predictable from signatures of local adaptation (R2 = 29-52%), as genetic variants that were found in geographical areas with climates more similar to the experimental sites were positively selected. Field-validated predictions across the species range indicated that Mediterranean and western Siberian populations-at the edges of the environmental limits of this species-currently experience the strongest climate-driven selection. With more frequent droughts and rising temperatures in Europe4, we forecast an increase in directional natural selection moving northwards from the southern end of Europe, putting many native A. thaliana populations at evolutionary risk.
巻・号 573(7772)
ページ 126-129
公開日 2019-8-28
DOI 10.1038/s41586-019-1520-9
PII 10.1038/s41586-019-1520-9
PMID 31462776
MeSH Acclimatization / genetics* Arabidopsis / genetics* Arabidopsis / growth & development Climate Change / statistics & numerical data* Droughts / statistics & numerical data Genetic Fitness Genome, Plant / genetics* Geographic Mapping Germany Global Warming / statistics & numerical data Polymorphism, Single Nucleotide / genetics Rain Reproducibility of Results Selection, Genetic* Siberia Spain
IF 43.07
引用数 13
リソース情報
GBIF Plant specimens of Ishikawa Museum of Natural History Spermatophyte collection of Himeji City Science Museum Plant specimens of Otaru Museum Plant specimens of Komatsu City Museum Vascular Plant Specimens of Yamagata Prefectural Museum Vascular plant specimens of Akita Prefectural Museum Herbarium, University Archives and Collections, Fukushima University, Japan (FKSE) Vascular Plant Collection of Natural History Museum and Institute, Chiba Plant Specimens of Kurashiki Museum of Natural History Herbarium Specimens of Tokushima Prefectural Museum, Japan Spermatophyta specimens of Iwate Prefectural Museum Plant specimens in the Museum of Nature and Human Activities, Hyogo Prefecture, Japan Plant specimens deposited in Osaka Museum of Natural History, Japan Vascular Plant Specimen database of Kanagawa Prefectural Museum of Natural History Gunma Museum of Natural History, Vascular Plant Specimen Plant specimens of Parthenon Tama Museum (PTHM) Plant specimens of Obihiro Centennial City Museum Plant specimens of Toyota City Nature Sanctuary (from non-museum circle) Vascular plant specimens of Toyama Science Museum