Predicting crown damage to Eucalyptus grandis by Paropsis atomaria with direct and indirect measures of leaf composition

Henery, Martin L.; Henson, Michael; Wallis, Ian R.; Stone, Christine; Foley, William J.

doi:10.1016/j.foreco.2008.03.003

Cited by 15 publications

(18 citation statements)

References 71 publications

(67 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…No terpene or FPC compound had any bearing on which clones appeared to resist P. atomaria larvae and which were susceptible although, admittedly, we sampled much older leaves than those on which the Wrst two instars feed. Other research in our laboratory found a similar lack of correlation between FPC concentrations and defoliation of E. grandis by P. atomaria in trial plantations (Henery et al 2008).…”

Section: Discussionsupporting

confidence: 71%

Methyl jasmonate does not induce changes in Eucalyptus grandis leaves that alter the effect of constitutive defences on larvae of a specialist herbivore

Henery

Wallis

Stone³

et al. 2008

Oecologia

Self Cite

View full text Add to dashboard Cite

The up-regulation of secondary metabolic pathways following herbivore attack and the subsequent reduction in herbivore performance have been identified in numerous woody plant species. Eucalypts constitutively express many secondary metabolites in the leaves, including terpenes and formylated phloroglucinol compounds (FPCs). We used clonal ramets from six clones of Eucalyptus grandis and two clones of E. grandis x camaldulensis to determine if methyl jasmonate (MeJA) treatment could induce changes in the foliar concentrations of either of these groups of compounds. We also used bioassays to determine if any changes in the performance of larvae of Paropsis atomaria, a chrysomelid leaf beetle, could be detected in treated ramets versus the untreated controls, thus indicating whether MeJA induced the up-regulation of defences other than terpenes or FPCs. We found no significant effects of MeJA treatment on either the foliar concentrations of terpenes and FPCs or on herbivore performance. We did, however, detect dramatic differences in larval performance between Eucalyptus clones, thereby demonstrating large variations in the levels of constitutive defence. Larval feeding on clones resistant to P. atomaria resulted in high first instar mortality and disruption of normal gregarious feeding behaviour in surviving larvae. Histological examination of larvae feeding on a resistant clone revealed damage to the midgut consistent with the action of a toxin. These findings concur with mounting evidence that most evergreen perennial plants lack foliar-induced defences and suggest that constitutively expressed secondary metabolites other than those commonly examined in studies of interactions between insect herbivores and Eucalyptus may be important in plant defence.

show abstract

Section: Discussionsupporting

confidence: 71%

Methyl jasmonate does not induce changes in Eucalyptus grandis leaves that alter the effect of constitutive defences on larvae of a specialist herbivore

Henery

Wallis

Stone³

et al. 2008

Oecologia

Self Cite

View full text Add to dashboard Cite

show abstract

“…Nevertheless, our results suggest a possible chemical basis for host selection behavior and that selection for potential resistance may be possible for this species (see also Henery et al 2008). Differential resistance to a number of significant insect pests, including eucalypt weevil (Dungey and Potts 2003), sawflies (Jordan et al 2002), leaf beetles (Raymond 1995;Rapley et al 2004a), and autumn gum moth (Jones et al 2002;Rapley et al 2004b) has been found in other eucalypts.…”

Section: Discussionmentioning

confidence: 57%

Corymbia Species and Hybrids: Chemical and Physical Foliar Attributes and Implications for Herbivory

Nahrung¹,

Waugh²,

Hayes³

2009

J Chem Ecol

View full text Add to dashboard Cite

Hybridization is an important biological phenomenon that can be used to understand the evolutionary process of speciation of plants and their associated pests and diseases. Interactions between hybrid plants and the herbivores of the parental taxa may be used to elucidate the various cues being used by the pests for host location or other processes. The chemical composition of plants, and their physical foliar attributes, including leaf thickness, trichome density, moisture content and specific leaf weight were compared between allopatric pure and commercial hybrid species of Corymbia, an important subtropical hardwood taxon. The leaf-eating beetle Paropsis atomaria, to which the pure taxa represented host (C. citriodora subsp. variegata) and non-host (C. torelliana) plants, was used to examine patterns of herbivory in relation to these traits. Hybrid physical foliar traits, chemical profiles, and field and laboratory beetle feeding preference, while showing some variability, were generally intermediate to those exhibited by parent taxa, thus suggesting an additive inheritance pattern. The hybrid susceptibility hypothesis was not supported by our field or laboratory studies, and there was no strong relationship between adult preference and larval performance. The most-preferred adult host was the sympatric taxon, although this species supported the lowest larval survival, while the hybrid produced significantly smaller pupae than the pure species. The results are discussed in relation to plant chemistry and physical characteristics. The findings suggest a chemical basis for host selection behavior and indicate that it may be possible to select for resistance to this insect pest in these commercially important hardwood trees.

show abstract

“…(2008) developed NIRS models to quantify formylated phloroglucinol compounds in Eucalyptus trees, which have been proposed to act as defensive compounds against insect herbivores. The compound specificity of the NIRS models in Henery et al. (2008) suggests that it will be possible to further develop NIRS models to target specific secondary compounds in algae.…”

Section: Discussionmentioning

confidence: 99%

“…Couteaux et al (2005) used NIRS successfully to determine the water-soluble and total extractable polyphenolics of forbs, grasses, shrubs, and giant rosettes from not only different organs (leaves, stems, roots) but also at different decomposition stages, demonstrating the versatility of NIRS to measure secondary metabolites from a diverse range of plant tissues. Additionally, Henery et al (2008) developed NIRS models to quantify formylated phloroglucinol compounds in Eucalyptus trees, which have been proposed to act as defensive compounds against insect herbivores. The compound specificity of the NIRS models in Henery et al (2008) suggests that it will be possible to further develop NIRS models to target specific secondary compounds in algae.…”

Section: Nirs Calibration Models Pls Regression Between Laboratory Vmentioning

confidence: 99%

The Use of Near Infrared Reflectance Spectrometry for Characterization of Brown Algal Tissue1

Hay

Millers

Poore

et al. 2010

Journal of Phycology

View full text Add to dashboard Cite

Measuring qualitative traits of plant tissue is important to understand how plants respond to environmental change and biotic interactions. Near infrared reflectance spectrometry (NIRS) is a cost-, time-, and sample-effective method of measuring chemical components in organic samples commonly used in the agricultural and pharmaceutical industries. To assess the applicability of NIRS to measure the ecologically important tissue traits of carbon, nitrogen, and phlorotannins (secondary metabolites) in brown algae, we developed NIRS calibration models for these constituents in dried Sargassum flavicans (F. K. Mertens) C. Agardh tissue. We then tested if the developed NIRS models could detect changes in the tissue composition of S. flavicans induced by experimental manipulation of temperature and nutrient availability. To develop the NIRS models, we used partial least squares regression to determine the statistical relationship between trait values determined in laboratory assays and the NIRS spectral data of S. flavicans calibration samples. Models with high predictive power were developed for all three constituents that successfully detected changes in carbon, nitrogen, and phlorotannin content in the experimentally manipulated S. flavicans tissue. Phlorotannin content in S. flavicans was inversely related to nitrogen availability, and nitrogen, temperature, and tissue age interacted to significantly affect phlorotannin content, demonstrating the importance of studies that investigate these three variables simultaneously. Given the speed of analysis, accuracy, small tissue requirements, and ability to measure multiple traits simultaneously without consuming the sample tissue, NIRS is a valuable alternative to traditional methods for determining algal tissue traits, especially in studies where tissue is limited.

show abstract

Predicting crown damage to Eucalyptus grandis by Paropsis atomaria with direct and indirect measures of leaf composition

Cited by 15 publications

References 71 publications

Methyl jasmonate does not induce changes in Eucalyptus grandis leaves that alter the effect of constitutive defences on larvae of a specialist herbivore

Methyl jasmonate does not induce changes in Eucalyptus grandis leaves that alter the effect of constitutive defences on larvae of a specialist herbivore

Corymbia Species and Hybrids: Chemical and Physical Foliar Attributes and Implications for Herbivory

The Use of Near Infrared Reflectance Spectrometry for Characterization of Brown Algal Tissue1

Contact Info

Product

Resources

About