Quantitative trait loci for key defensive compounds affecting herbivory of eucalypts in Australia

Jules S Freeman; J M O'Reilly-Wapstra; R E Vaillancourt; N Wiggins; Brad M Potts

doi:10.1111/j.1469-8137.2008.02417.x

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Quantitative trait loci for key defensive compounds affecting herbivory of eucalypts in Australia

Journal article

Peer reviewed

Quantitative trait loci for key defensive compounds affecting herbivory of eucalypts in Australia

Jules S Freeman, J M O'Reilly-Wapstra, R E Vaillancourt, N Wiggins and Brad M Potts

New Phytologist, Vol.178(4), pp.846-851

2008

DOI: https://doi.org/10.1111/j.1469-8137.2008.02417.x

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Abstract

Biological Sciences

Agricultural and Veterinary Sciences

community genetics

Eucalyptus globulus

extended phenotype

formylated phloroglucinols

herbivory

plant secondary metabolites

Formylated phloroglucinols (FPCs) are key defensive compounds that influence herbivory by mammals and arthropods in eucalypts. However, the genetic architecture underlying variation in their levels remains poorly understood. Quantitative trait loci (QTL) analysis for the concentrations of two major FPCs, sideroxylonal A and macrocarpal G, was conducted using juvenile leaves from 112 clonally duplicated progenies from an outcross F2 of Eucalyptus globulus. Two unlinked QTL were located for macrocarpal, while another unlinked QTL was located for sideroxylonal. The sideroxylonal QTL collocated with one for total sideroxylonal previously reported using adult Eucalyptus nitens foliage, providing independent validation in a different evolutionary lineage and a different ontogenetic stage. Given the potential widespread occurrence of these QTL, their ontogenetic stability, and their impact on a range of dependent herbivores, it is possible that they have extended phenotypic effects in the Australian forest landscape.

Details

Title: Quantitative trait loci for key defensive compounds affecting herbivory of eucalypts in Australia
Authors: Jules S Freeman (Author) - University of Tasmania
J M O'Reilly-Wapstra (Author) - University of Tasmania
R E Vaillancourt (Author) - University of Tasmania
N Wiggins (Author) - University of Tasmania
Brad M Potts (Author) - University of Tasmania
Publication details: New Phytologist, Vol.178(4), pp.846-851
Publisher: Wiley-Blackwell Publishing Ltd.
Date published: 2008
DOI: 10.1111/j.1469-8137.2008.02417.x
ISSN: 0028-646X
Organisation Unit: University of the Sunshine Coast, Queensland
Language: English
Record Identifier: 99450163702621
Output Type: Journal article

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