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Quantitative trait loci for key defensive compounds affecting herbivory of eucalypts in Australia
Freeman, JS and O’Reilly-Wapstra, JM and Vaillancourt, RE and Wiggins, NL and Potts, BM (2008) Quantitative trait loci for key defensive compounds affecting herbivory of eucalypts in Australia. New Phytologist, 178 (4). pp. 846-851. ISSN 0028-646X
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• 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
• 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.
|Keywords:||community genetics, Eucalyptus globulus, extended phenotype, formylated phloroglucinols, herbivory, plant secondary metabolites.|
|Journal or Publication Title:||New Phytologist|
|Page Range:||pp. 846-851|
|Identification Number - DOI:||10.1111/j.1469-8137.2008.02417.x|
BM Potts. The definitive version is available at www.blackwell-synergy.com
|Date Deposited:||21 May 2008 22:38|
|Last Modified:||18 Nov 2014 03:41|
|Item Statistics:||View statistics for this item|
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