Title |
Differences in gene expression within a striking phenotypic mosaic Eucalyptustree that varies in susceptibility to herbivory
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Published in |
BMC Plant Biology, February 2013
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DOI | 10.1186/1471-2229-13-29 |
Pubmed ID | |
Authors |
Amanda Padovan, Andras Keszei, William J Foley, Carsten Külheim |
Abstract |
Long-lived trees can accumulate mutations throughout their lifetimes that may influence biotic and abiotic interactions. For example, some Eucalyptus trees display marked variation in herbivore defence within a single canopy. These "mosaic" trees support foliage with distinct chemotypes which are differentially favoured by insect and vertebrate herbivores, resulting in susceptible and resistant branches within a single canopy. These mosaic trees provide a unique opportunity to explore the biosynthesis and genetic regulation of chemical defences in the foliage. The biosynthesis of the principal defence compounds, terpenoid-dominated essential oils, is well understood. However, the regulation of the genes involved and thus the control of phenotypic variation within a single tree canopy remains a mystery. |
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