Journal article
Using essential oil composition to discriminate between myrtle rust phenotypes in Eucalyptus globulus and Eucalyptus obliqua
WTL Yong, PK Ades, JQD Goodger, G Bossinger, FA Runa, KS Sandhu, JFG Tibbits
Industrial Crops and Products | ELSEVIER | Published : 2019
Abstract
Eucalyptus foliar terpenes have been reported widely to function as chemical defence agents against mammalian herbivores and defoliating insects both via direct toxicity and/or indirect priming of systemic defence mechanisms. Less frequently they have been reported as disease resistance biomarkers. The present study compares composition of foliar essential oils in Eucalyptus globulus Labill. and Eucalyptus obliqua L'Hér. between distinct myrtle rust (causal pathogen Austropuccinia psidii Beenken) response phenotypes i.e. completely resistant, hypersensitive and highly susceptible, using canonical discriminant analysis. Stepwise forward variable selection identified six terpene compounds (bic..
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Awarded by Australian Research Council
Funding Acknowledgements
This work was supported by the Australian Research Council (LP13010045) and associated industry partners. W.T.L. Yong received a scholarship from the Malaysian government via Academic Training Scheme of Public Higher Education Institutions (Skim Latihan Akademik Institut Pengajian Tinggi Awam, SLAI). Thanks go to Alice Gower for excellent technical support and Robert Park for having made available specialised rust glasshouse facilities at the University of Sydney.