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Differential distribution of leaf chemistry in eucalypt seedlings due to variation in whole-plant nutrient availability

Citation

Close, DC and McArthur, C and Hagerman, AE and Fitzgerald, H, Differential distribution of leaf chemistry in eucalypt seedlings due to variation in whole-plant nutrient availability, Phytochemistry, 66, (2) pp. 215-221. ISSN 0031-9422 (2005) [Refereed Article]


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DOI: doi:10.1016/j.phytochem.2004.11.004

Abstract

We investigated the effects of whole-plant nutrient-availability on the degree of distribution of some plant primary and secondary (nitrogen, fibre, flavonols, gallotannins and cineole) chemicals across young, mature and old leaves of seedlings of Eucalyptus nitens. Four treatments that ranged from low to high nutrient-application rates resulted in mean whole-plant foliar concentrations of 0.63%, 0.85%, 1.11% and 1.82% nitrogen dry matter (N%DM) for treatments A, B, C and D, respectively. Within-plant distribution (across the leaf age profile of young, mature and old leaves within a eucalypt seedling) of N%DM ranged from zero in treatment A to a wide range of distribution in treatment D (low N%DM concentrations in old leaves to high N%DM concentrations in young leaves). Similarly, the distribution of fibre ranged from zero in treatment A to a wide range of distribution in treatment D, but with high concentrations in old leaves and low concentrations in young leaves. In contrast, flavonols (weakly) and gallotannins had a wide range of distribution in treatment A (low concentrations in old leaves to high concentrations in young leaves) but were little or not distributed in the other treatments. Again in contrast, cineole was strongly distributed between old and young leaves (low concentrations in old leaves to high concentrations in young leaves) across all treatments while concentrations in mature leaves reflected one or other leaf age depending on treatment. Protein precipitable phenols in treatments A, B and C were high in young, and low in old leaves; whereas in treatment D they were low and similar between leaves of different ages.

Item Details

Item Type:Refereed Article
Keywords:Antioxidants; Herbivory; Photoinhibition; Protein precipitable phenols; Seedlings; Eucalyptus
Research Division:Agricultural and Veterinary Sciences
Research Group:Forestry Sciences
Research Field:Tree Nutrition and Physiology
Objective Division:Plant Production and Plant Primary Products
Objective Group:Forestry
Objective Field:Native Forests
Author:Close, DC (Associate Professor Dugald Close)
Author:McArthur, C (Dr Clare McArthur)
Author:Fitzgerald, H (Mr Hugh Fitzgerald)
ID Code:66355
Year Published:2005
Web of Science® Times Cited:22
Deposited By:Agricultural Science
Deposited On:2011-01-13
Last Modified:2011-02-19
Downloads:2 View Download Statistics

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