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Quantitative trait loci for foliar terpenes in a global eucalypt species
journal contribution
posted on 2023-05-17, 07:24 authored by Julianne O'Reilly-WapstraJulianne O'Reilly-Wapstra, Jules FreemanJules Freeman, Noel DaviesNoel Davies, Rene VaillancourtRene Vaillancourt, Hugh FitzgeraldHugh Fitzgerald, Bradley PottsBradley PottsTerpenes 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
History
Publication title
Tree Genetics & GenomesVolume
7Pagination
485-498ISSN
1614-2942Department/School
School of Natural SciencesPublisher
SpringerPlace of publication
GermanyRights statement
Copyright 2010 Springer-VerlagRepository Status
- Restricted