molecular basis of quantitative variation in foliar secondary metabolites in Eucalyptus globulus

• Eucalyptus is characterized by high foliar concentrations of plant secondary metabolites with marked qualitative and quantitative variation within a single species. Secondary metabolites in eucalypts are important mediators of a diverse community of herbivores. • We used a candidate gene approach...

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Veröffentlicht in:The New phytologist 2011-09, Vol.191 (4), p.1041-1053
Hauptverfasser: Külheim, Carsten, Yeoh, Suat Hui, Wallis, Ian R., Laffan, Shawn, Moran, Gavin F., Foley, William J.
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container_end_page 1053
container_issue 4
container_start_page 1041
container_title The New phytologist
container_volume 191
creator Külheim, Carsten
Yeoh, Suat Hui
Wallis, Ian R.
Laffan, Shawn
Moran, Gavin F.
Foley, William J.
description • Eucalyptus is characterized by high foliar concentrations of plant secondary metabolites with marked qualitative and quantitative variation within a single species. Secondary metabolites in eucalypts are important mediators of a diverse community of herbivores. • We used a candidate gene approach to investigate genetic associations between 195 single nucleotide polymorphisms (SNPs) from 24 candidate genes and 33 traits related to secondary metabolites in the Tasmanian Blue Gum (Eucalyptus globulus). • We discovered 37 significant associations (false discovery rate (FDR) Q < 0.05) across 11 candidate genes and 19 traits. The effects of SNPs on phenotypic variation were within the expected range (0.018 < r² < 0.061) for forest trees. Whereas most marker effects were nonadditive, two alleles from two consecutive genes in the methylerythritol phosphate pathway (MEP) showed additive effects. • This study successfully links allelic variants to ecologically important phenotypes which can have a large impact on the entire community. It is one of very few studies to identify the genetic variants of a foundation tree that influences ecosystem function.
doi_str_mv 10.1111/j.1469-8137.2011.03769.x
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Secondary metabolites in eucalypts are important mediators of a diverse community of herbivores. • We used a candidate gene approach to investigate genetic associations between 195 single nucleotide polymorphisms (SNPs) from 24 candidate genes and 33 traits related to secondary metabolites in the Tasmanian Blue Gum (Eucalyptus globulus). • We discovered 37 significant associations (false discovery rate (FDR) Q &lt; 0.05) across 11 candidate genes and 19 traits. The effects of SNPs on phenotypic variation were within the expected range (0.018 &lt; r² &lt; 0.061) for forest trees. Whereas most marker effects were nonadditive, two alleles from two consecutive genes in the methylerythritol phosphate pathway (MEP) showed additive effects. • This study successfully links allelic variants to ecologically important phenotypes which can have a large impact on the entire community. 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Secondary metabolites in eucalypts are important mediators of a diverse community of herbivores. • We used a candidate gene approach to investigate genetic associations between 195 single nucleotide polymorphisms (SNPs) from 24 candidate genes and 33 traits related to secondary metabolites in the Tasmanian Blue Gum (Eucalyptus globulus). • We discovered 37 significant associations (false discovery rate (FDR) Q &lt; 0.05) across 11 candidate genes and 19 traits. The effects of SNPs on phenotypic variation were within the expected range (0.018 &lt; r² &lt; 0.061) for forest trees. Whereas most marker effects were nonadditive, two alleles from two consecutive genes in the methylerythritol phosphate pathway (MEP) showed additive effects. • This study successfully links allelic variants to ecologically important phenotypes which can have a large impact on the entire community. 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subjects additive effect
Additives
Alkyl and Aryl Transferases - metabolism
Alleles
Cyclohexanols - metabolism
Ecological effects
Ecological genetics
ecosystems
Eucalyptol
Eucalyptus
Eucalyptus - chemistry
Eucalyptus - genetics
Eucalyptus - metabolism
Eucalyptus globulus
Exons
flavonoids
forest trees
Gene Frequency
Genes
Genes, Plant
genetic association
Genetic diversity
Genetic loci
Genetic Markers
Genetic variance
Genetic variation
Genotype
Herbivores
Introns
Linkage Disequilibrium
Metabolites
Metabolome
Monoterpenes - metabolism
Nucleotides
phenotype
Phenotypes
Phenotypic traits
Phenotypic variation
Phenotypic variations
Phosphates
Plant Leaves - chemistry
Plant Leaves - metabolism
plant secondary metabolites
plant–herbivore interaction
Polymorphism, Single Nucleotide
Quantitative Trait Loci
Secondary metabolites
Sesquiterpenes
Single-nucleotide polymorphism
Species Specificity
Terpenes
title molecular basis of quantitative variation in foliar secondary metabolites in Eucalyptus globulus
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