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Mass Spectrometry in the Australian Landscape

Citation

Davies, NW, Mass Spectrometry in the Australian Landscape, 20th RACI R&D Topics Conference, book of abstracts, 11th-14th Dec 2012, Geelong, Australia, pp. 105. (2012) [Plenary Presentation]

Abstract

In association with gas and liquid chromatography, mass spectrometry has been essential to our understanding of the complex chemical ecology of the Australian bush and plantation forests. This includes the chemical defences of eucalypts against herbivory and fungal decay, and pheromones used for communication between individuals of the same species. Organic chemical classes encountered in this broad chemical ecology network include: relatively simple (but often novel) aliphatic compounds terpenes hydrolysable tannins condensed tannins flavonoids formylated phloroglucinol compounds (FPCs), which have strong antifeedant properties towards marsupials highly oxidized terpenes formed by metabolic processes in marsupials to detoxify their essential oil rich diet Mass spectrometry has enabled the determination of the structures or partial structures of many new compounds in these classes, as well as being fundamental to the assignment of known compounds. Specific examples, all using negative ion electrospray MS and MS/MS, will relate to eucalypt phenolic chemistry. These include the discovery and assignment of new types of FPCs in eucalypt leaves and wood, the discovery of the mechanism of feeding deterrence to marsupial herbivores conferred by the presence of high levels of FPCs in eucalypt leaves, and detailed investigations into eucalypt tannin chemistry.

Item Details

Item Type:Plenary Presentation
Keywords:Australian flora and fauna, mass spectrometry, chromatography
Research Division:Chemical Sciences
Research Group:Organic Chemistry
Research Field:Natural Products Chemistry
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Chemical Sciences
Author:Davies, NW (Associate Professor Noel Davies)
ID Code:81484
Year Published:2012
Deposited By:Central Science Laboratory
Deposited On:2012-12-10
Last Modified:2012-12-10
Downloads:0

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