Effects of fungal infection on lipid extract composition of higher plant remains: comparison of shoots of a Cenomanian conifer, uninfected and infected by extinct fungi |
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| Authors: | Thanh Thuy Nguyen Tu Sylvie Derenne Claude Largeau Andr Mariotti Herv Bocherens Denise Pons |
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| Institution: | a Laboratoire de Biogéochimie Isotopique, Université Paris VI-INRA-CNRS, UMR 7618, Case courrier 120, 4 Place Jussieu, 75 252 Paris Cedex 05, France;b Laboratoire de Chimie Bioorganique et Organique Physique, ENSCP-CNRS, UMR 7573, 11 Rue Pierre et Marie Curie, 75 231 Paris Cedex 05, France;c Laboratoire de Paléobotanique et Paléoécologie, Université Paris VI, 12 Rue Cuvier, 75 005 Paris, France |
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| Abstract: | The lipid fraction extracted from uninfected shoots of a fossil conifer, Frenelopsis alata, was analysed by gas-chromatography–mass-spectrometry, and compared with shoots of the same conifer infected by extinct epiphyllous fungi, so as to study the effects of fungal infection on the chemical composition of extracts from higher plant remains. The extracts from the uninfected shoots appeared to be composed of (i) common constituents of higher plant lipids such as n-alkanes and fatty acids, (ii) elemental sulphur, and (iii) substantial amounts of terpenoids characteristic of conifers, such as cadalene, beyerane, dehydroabietane and related compounds. Comparison of this extract with that of fungal-infected shoots revealed, in addition to the aforementioned compounds, the presence of substantial amounts of hydroxysuccinic acid and functionalised benzoic compounds that were interpreted as degradation products of lignin by fungi. This study afforded preliminary indications of the composition of extracts from higher plant remains infected by fungi. |
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| Keywords: | Frenelopsis alata Lipids Cenomanian Fungi Lignin degradation |
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