Does Paropsis atomaria larval feeding induce chemical responses in Corymbia citriodora subsp. variegata?

Flavia Sarti Bonora; Helen Nahrung; David Lee; Andrew Hayes

doi:10.4336/2019.pfb.39e201902043

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Does Paropsis atomaria larval feeding induce chemical responses in Corymbia citriodora subsp. variegata?

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Does Paropsis atomaria larval feeding induce chemical responses in Corymbia citriodora subsp. variegata?

Flavia Sarti Bonora, Helen Nahrung, David Lee and Andrew Hayes

Pesquisa Florestal Brasileira [Brazilian Journal of Forestry Research], pp.39-Special Issue

IUFRO World Congress, XXV (Curitiba, Brazil, 29-Sep-2019–05-Oct-2019)

2019

DOI: https://doi.org/10.4336/2019.pfb.39e201902043

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Abstract

Forestry not elsewhere classified

Corymbia citriodora subsp. variegata (CCV) is promising for hardwood plantations in areas considered marginal for many commercial forestry species, as it presents desirable field performance, wood quality and form and suits a range of site conditions. The eucalypt tortoise beetle Paropsis atomaria Olivier (Coleoptera: Chrysomelidae) is a major pest of eucalypt plantations in Queensland, including areas planted with CCV. P. atomaria can cause severe defoliation in young trees, reducing plantation productivity and quality. Studies with Corymbia spp demonstrated that plant secondary metabolites, such as terpenes, are correlated with arthropod herbivory and can be effective as insect growth inhibitors. Changes in plant chemistry can occur in plants as a response to herbivory, potentially reducing further damage. To provide a better understanding of plant-herbivore interactions and possible resistance mechanisms, this study evaluated the chemical response of CCV challenged by P. atomaria. Seedlings of CCV were submitted to one of three treatments: no damage; mechanical damage and P. atomaria larval damage. After 15 days seedlings were removed from the treatments and leaf samples were analysed to determine the leaf-oil gas chromatography-mass spectrometry. The results revealed that P. atomaria larval feeding induced chemical response in CCV with up-regulation of waxes and down-regulation of terpenoids. The same pattern was not observed on plants under mechanical damage, suggesting an interaction between plant-herbivore.

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Title: Does Paropsis atomaria larval feeding induce chemical responses in Corymbia citriodora subsp. variegata?
Authors: Flavia Sarti Bonora (Author) - University of the Sunshine Coast
Helen Nahrung (Author) - University of the Sunshine Coast
David Lee (Author) - University of the Sunshine Coast
Andrew Hayes (Author) - University of the Sunshine Coast
Publication details: Pesquisa Florestal Brasileira [Brazilian Journal of Forestry Research], pp.39-Special Issue; 586
Conference details: IUFRO World Congress, XXV (Curitiba, Brazil, 29-Sep-2019–05-Oct-2019)
Publisher: Empresa Brasileira de Pesquisa Agropecuaria, Centro Nacional de Pesquisa de Florestas
Date published: 2019
DOI: 10.4336/2019.pfb.39e201902043
ISSN: 1983-2605
Copyright note: The originals published in the Brazilian Forestry Survey are made available under a Creative Commons Attribution-NonCommercial-SemDerivatives 4.0 International License.
Organisation Unit: Forest Industries Research Centre
Language: English
Record Identifier: 991238899602621
Output Type: Abstract

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