Quantitative trait loci for foliar terpenes in a global eucalypt species

J M O'Reilly-Wapstra; Jules S Freeman; N W Davies; R E Vaillancourt; H Fitzgerald; Brad M Potts

doi:10.1007/s11295-010-0350-6

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Quantitative trait loci for foliar terpenes in a global eucalypt species

Journal article

Peer reviewed

Quantitative trait loci for foliar terpenes in a global eucalypt species

J M O'Reilly-Wapstra, Jules S Freeman, N W Davies, R E Vaillancourt, H Fitzgerald and Brad M Potts

Tree Genetics & Genomes, Vol.7(3), pp.485-498

2011

DOI: https://doi.org/10.1007/s11295-010-0350-6

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Abstract

Genetics

Forestry Sciences

Agricultural Biotechnology

Eucalyptus

genetic variation

plant secondary metabolites

QTL

terpenoids

Terpenes are a diverse group of plant secondary metabolites that mediate a plethora of ecological interactions in many plant species. Despite increasing research into the genetic control of important adaptive traits in some plant species, the genetic control of terpenes in forest tree species is still relatively poorly studied. In this study, we use quantitative genetic and quantitative trait loci (QTL) analysis to investigate the genetic control of foliar terpenes in an ecologically and commercially important eucalypt species, Eucalyptus globulus. We show a moderate to high within-family broad-sense heritability and significant genetic basis to the variation in 14 of the 16 terpenes assayed. This is the first report of QTL for terpenes in this species. Eleven QTL influenced the terpenes overall. One QTL on linkage group 6 affected six of the seven different sesquiterpenes assayed (plus one monoterpene), which, in combination with highly significant correlations between these compounds, argues that their variation is influenced by a QTL with pleiotropic effect early in the biosynthetic pathway. We examine the homology of these QTL to those found in a closely related eucalypt, Eucalyptus nitens, and provide evidence that both common and unique QTL influence terpene levels.

Details

Title: Quantitative trait loci for foliar terpenes in a global eucalypt species
Authors: J M O'Reilly-Wapstra (Author) - University of Tasmania
Jules S Freeman (Author) - University of Tasmania
N W Davies (Author) - University of Tasmania
R E Vaillancourt (Author) - University of Tasmania
H Fitzgerald (Author) - University of Tasmania
Brad M Potts (Author) - University of Tasmania
Publication details: Tree Genetics & Genomes, Vol.7(3), pp.485-498
Publisher: Springer
Date published: 2011
DOI: 10.1007/s11295-010-0350-6
ISSN: 1614-2942
Organisation Unit: University of the Sunshine Coast, Queensland
Language: English
Record Identifier: 99449234002621
Output Type: Journal article

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