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Quantitative trait loci for foliar terpenes in a global eucalypt species


O'Reilly-Wapstra, JM and Freeman, JS and Davies, NW and Vaillancourt, RE and Fitzgerald, H and Potts, BM, Quantitative trait loci for foliar terpenes in a global eucalypt species, Tree Genetics & Genomes , 7, (3) pp. 485-498. ISSN 1614-2942 (2011) [Refereed Article]

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Copyright 2010 Springer-Verlag

DOI: doi:10.1007/s11295-010-0350-6


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

Item Details

Item Type:Refereed Article
Research Division:Agricultural, Veterinary and Food Sciences
Research Group:Forestry sciences
Research Field:Tree improvement (incl. selection and breeding)
Objective Division:Plant Production and Plant Primary Products
Objective Group:Forestry
Objective Field:Hardwood plantations
UTAS Author:O'Reilly-Wapstra, JM (Associate Professor Julianne O'Reilly-Wapstra)
UTAS Author:Freeman, JS (Dr Jules Freeman)
UTAS Author:Davies, NW (Associate Professor Noel Davies)
UTAS Author:Vaillancourt, RE (Professor Rene Vaillancourt)
UTAS Author:Fitzgerald, H (Mr Hugh Fitzgerald)
UTAS Author:Potts, BM (Professor Brad Potts)
ID Code:72174
Year Published:2011
Web of Science® Times Cited:30
Deposited By:Plant Science
Deposited On:2011-08-23
Last Modified:2017-11-03

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