Genomic basis for drought resistance in European beech forests threatened by climate change

eLife

Bagdevi Mishra¹  Nico Blüthgen²  Sabrina Reuter²  Karsten Mody³  Susanne Gerber⁴  Marco Thines⁵  Berardino Cocchiararo⁶  Miklós Bálint⁷  Barbara Feldmeyer⁸  Friederike Reuss⁸  Angelika Kiebler⁸  Markus Pfenninger⁹  Philipp Schönnenbeck^1,10  Cosima Caliendo^1,10 

[1] Biological Archives, Senckenberg Biodiversity and Climate Research Centre, Frankfurt am Main, Germany;Ecological Networks lab, Department of Biology, Technische Universität Darmstadt, Darmstadt, Germany;Ecological Networks lab, Department of Biology, Technische Universität Darmstadt, Darmstadt, Germany;Department of Applied Ecology, Hochschule Geisenheim University, Geisenheim, Germany;Institute of Human Genetics, University Medical Center, Johannes Gutenberg University, Mainz, Germany;LOEWE Centre for Translational Biodiversity Genomics, Frankfurt am Main, Germany;Biological Archives, Senckenberg Biodiversity and Climate Research Centre, Frankfurt am Main, Germany;Institute for Ecology, Evolution and Diversity, Johann Wolfgang Goethe-University, Frankfurt am Main, Germany;LOEWE Centre for Translational Biodiversity Genomics, Frankfurt am Main, Germany;Conservation Genetics Section, Senckenberg Research Institute and Natural History Museum Frankfurt, Gelnhausen, Germany;LOEWE Centre for Translational Biodiversity Genomics, Frankfurt am Main, Germany;Functional Environmental Genomics, Senckenberg Biodiversity and Climate Research Centre, Frankfurt am Main, Germany;Agricultural Sciences, Nutritional Sciences, and Environmental Management, Universität Giessen, Giessen, Germany;Molecular Ecology, Senckenberg Biodiversity and Climate Research Centre, Frankfurt am Main, Germany;Molecular Ecology, Senckenberg Biodiversity and Climate Research Centre, Frankfurt am Main, Germany;Institute for Organismic and Molecular Evolution, Johannes Gutenberg University, Mainz, Germany;LOEWE Centre for Translational Biodiversity Genomics, Frankfurt am Main, Germany;Molecular Ecology, Senckenberg Biodiversity and Climate Research Centre, Frankfurt am Main, Germany;Institute of Human Genetics, University Medical Center, Johannes Gutenberg University, Mainz, Germany;

关键词: Fagus sylvatica L.;    genome-wide association study;    genomic prediction;    forest tree;    conservation genomics;    functional environmental genomics;    Other;   

DOI  :  10.7554/eLife.65532

来源: eLife Sciences Publications, Ltd

【 摘 要 】

In the course of global climate change, Central Europe is experiencing more frequent and prolonged periods of drought. The drought years 2018 and 2019 affected European beeches (Fagus sylvatica L.) differently: even in the same stand, drought-damaged trees neighboured healthy trees, suggesting that the genotype rather than the environment was responsible for this conspicuous pattern. We used this natural experiment to study the genomic basis of drought resistance with Pool-GWAS. Contrasting the extreme phenotypes identified 106 significantly associated single-nucleotide polymorphisms (SNPs) throughout the genome. Most annotated genes with associated SNPs (>70%) were previously implicated in the drought reaction of plants. Non-synonymous substitutions led either to a functional amino acid exchange or premature termination. An SNP assay with 70 loci allowed predicting drought phenotype in 98.6% of a validation sample of 92 trees. Drought resistance in European beech is a moderately polygenic trait that should respond well to natural selection, selective management, and breeding.

【 授权许可】

CC BY