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Title

Landscape genomics and a common garden trial reveal adaptive differentiation to temperature across Europe in the tree species Alnus glutinosa

Publication Year

2014

Author(s)
  • De Kort, Hanne
  • Vandepitte, Katrien
  • Bruun, Hans Henrik
  • Closset-Kopp, Deborah
  • Honnay, Olivier
  • Mergeay, Joachim
Source
MOLECULAR ECOLOGY Volume: 23 Issue: 19 Pages: 4709-4721 Published: 2014
ISSN
0962-1083 eISSN: 1365-294X
Abstract

The adaptive potential of tree species to cope with climate change has important ecological and economic implications. Many temperate tree species experience a wide range of environmental conditions, suggesting high adaptability to new environmental conditions. We investigated adaptation to regional climate in the drought-sensitive tree species Alnus glutinosa (Black alder), using a complementary approach that integrates genomic, phenotypic and landscape data. A total of 24 European populations were studied in a common garden and through landscape genomic approaches. Genotyping-by-sequencing was used to identify SNPs across the genome, resulting in 1990 SNPs. Although a relatively low percentage of putative adaptive SNPs was detected (2.86% outlier SNPs), we observed clear associations among outlier allele frequencies, temperature and plant traits. In line with the typical drought avoiding nature of A.glutinosa, leaf size varied according to a temperature gradient and significant associations with multiple outlier loci were observed, corroborating the ecological relevance of the observed outlier SNPs. Moreover, the lack of isolation by distance, the very low genetic differentiation among populations and the high intrapopulation genetic variation all support the notion that high gene exchange combined with strong environmental selection promotes adaptation to environmental cues.

Author Keyword(s)
  • adaptation
  • climate change
  • contemporary evolution
  • natural selection
  • quantitative genetics
KeyWord(s) Plus
  • RAPID CLIMATE-CHANGE
  • LOCAL ADAPTATION
  • GENE FLOW
  • NATURAL-SELECTION
  • SPATIAL-ANALYSIS
  • LEAF PHENOLOGY
  • AQUATIC PLANT
  • FOREST TREES
  • POPULATION
  • EVOLUTIONARY
ESI Discipline(s)
  • Biology & Biochemistry
  • Environment/Ecology
  • Molecular Biology & Genetics
  • Plant & Animal Science
Web of Science Category(ies)
  • Biochemistry & Molecular Biology
  • Ecology
  • Evolutionary Biology
Adress(es)

[De Kort, Hanne; Vandepitte, Katrien; Honnay, Olivier] Univ Leuven, Dept Biol, B-3001 Heverlee, Belgium; [Bruun, Hans Henrik] Univ Copenhagen, Ecol & Evolut Sect, Dept Biol, DK-2100 Copenhagen, Denmark; [Closset-Kopp, Deborah] Jules Vernes Univ Picardy, Res Unit Ecol & Dynam Syst Anthropises, F-80037 Amiens, France; [Mergeay, Joachim] Res Inst Nat & Forest, B-9500 Geraardsbergen, Belgium

Reprint Adress

De Kort, H (reprint author), Univ Leuven, Dept Biol, Kasteelpk Arenberg 31, B-3001 Heverlee, Belgium.

Country(ies)
  • Belgium
  • Denmark
  • France
CNRS - Adress(es)
  • Ecologie et dynamique des systèmes anthropisés (EDYSAN), FRE3498
Accession Number
WOS:000342743000007
uid:/HG3KQPMS
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