New_Phytologist_Freeman_et_al1.pdf (213.4 kB)
Quantitative trait loci for key defensive compounds affecting herbivory of eucalypts in Australia
journal contribution
posted on 2023-05-16, 21:53 authored by Jules FreemanJules Freeman, Julianne O'Reilly-WapstraJulianne O'Reilly-Wapstra, Rene VaillancourtRene Vaillancourt, Natasha WigginsNatasha Wiggins, Bradley PottsBradley PottsFormylated 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.
History
Publication title
New PhytologistVolume
178Issue
4Pagination
846-851ISSN
0028-646XDepartment/School
School of Natural SciencesPublisher
Wiley-Blackwell Publishing Ltd.Place of publication
UKRepository Status
- Restricted