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Stability of plant defensive traits among populations in two Eucalyptus species under elevated carbon dioxide


McKiernan, AB and O'Reilly-Wapstra, JM and Price, C and Davies, NW and Potts, BM and Hovenden, MJ, Stability of plant defensive traits among populations in two Eucalyptus species under elevated carbon dioxide, Journal of Chemical Ecology, 38, (2) pp. 204-212. ISSN 0098-0331 (2012) [Refereed Article]

Copyright Statement

Copyright Springer Science+Business Media, LLC 2012

DOI: doi:10.1007/s10886-012-0071-4


Plant secondary metabolites (PSMs) mediate a wide range of ecological interactions. Investigating the effect of environment on PSM production is important for our understanding of how plants will adapt to large scale environmental change, and the extended effects on communities and ecosystems. We explored the production of PSMs under elevated atmospheric carbon dioxide ([CO2]) in the species rich, ecologically and commercially important genus Eucalyptus. Seedlings from multiple Eucalyptus globulus and E. pauciflora populations were grown in common glasshouse gardens under elevated or ambient [CO2]. Variation in primary and secondary chemistry was determined as a function of genotype and treatment. There were clear population differences in PSM expression in each species. Elevated [CO2] did not affect concentrations of individual PSMs, total phenolics, condensed tannins or the total oil yield, and there was no population by [CO2] treatment interaction for any traits. Multivariate analysis revealed similar results with significant variation in concentrations of E. pauciflora oil components between populations. A [CO2] treatment effect was detected within populations but no interactions were found between elevated [CO2] and population. These eucalypt seedlings appear to be largely unresponsive to elevated [CO2], indicating stronger genetic than environmental (elevated [CO2]) control of expression of PSMs.

Item Details

Item Type:Refereed Article
Keywords:leaf secondary metabolites, elevated CO2, herbivory, eucalyptus, genotype
Research Division:Biological Sciences
Research Group:Other biological sciences
Research Field:Global change biology
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the environmental sciences
UTAS Author:McKiernan, AB (Mr Adam McKiernan)
UTAS Author:O'Reilly-Wapstra, JM (Professor Julianne O'Reilly-Wapstra)
UTAS Author:Price, C (Miss Cassandra Price)
UTAS Author:Davies, NW (Associate Professor Noel Davies)
UTAS Author:Potts, BM (Professor Brad Potts)
UTAS Author:Hovenden, MJ (Professor Mark Hovenden)
ID Code:79117
Year Published:2012
Web of Science® Times Cited:27
Deposited By:Plant Science
Deposited On:2012-08-17
Last Modified:2013-05-13

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