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Long- and short-term induction of defences in seedlings of Shorea leprosula (Dipterocarpaceae): support for the carbon: nutrient balance hypothesis

Massey, F.P., Press, M.C. and Hartley, S.E. (2005) Long- and short-term induction of defences in seedlings of Shorea leprosula (Dipterocarpaceae): support for the carbon: nutrient balance hypothesis. Journal of Tropical Ecology, 21 (2). pp. 195-201. ISSN 1469-7831

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The induction of carbon-based secondary metabolites in leaves following damage has been proposed to be a result of a shift in the carbon:nutrient balance, when growth is limited by nutrients in relation to carbon. Here we test this hypothesis using seedlings of a tropical tree, Shorea leprosula (Dipterocarpaceae). In the short term, we analysed the phenolic content of leaves 7 d after damage on seedlings grown under differing light and nutrient treatments. In the long term, we examined the effect of nutrients, over 12 mo, on leaf phenolic concentration and seedling growth. In both the long and short term, levels of phenolics increased in damaged leaves under low nutrient treatments. No changes in leaf phenolics were detected under high nutrient regimes, or in the short term under low light. In addition, it was found that defoliation of seedlings in high-nutrient environments led to greater rates of leaf production than in undamaged seedlings, suggesting compensation.

Item Type: Article
Copyright, Publisher and Additional Information: © 2005 Cambridge University Press. Reproduced in accordance with the publisher's self-archiving policy.
Keywords: carbon:nutrient balance hypothesis, compensation, defence induction, dipterocarp, herbivory, Malaysia, phenolics
Institution: The University of Sheffield
Academic Units: The University of Sheffield > Faculty of Science (Sheffield) > School of Biological Sciences (Sheffield) > Department of Animal and Plant Sciences (Sheffield)
Depositing User: Repository Officer
Date Deposited: 15 Sep 2006
Last Modified: 06 Jun 2014 04:12
Published Version: http://dx.doi.org/10.1017/S0266467404002111
Status: Published
Publisher: Cambridge University Press
Refereed: Yes
Identification Number: 10.1017/S0266467404002111
URI: http://eprints.whiterose.ac.uk/id/eprint/1582

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