| Title: | Fading of wound-induced volatile release during Populus tremula leaf expansion |
| Author(s): | Portillo-Estrada M; Kazantsev T; Niinemets U; |
| Address: | "Centre of Excellence PLECO, Department of Biology, University of Antwerp, Universiteitsplein 1, 2610, Wilrijk, Belgium. Miguel.PortilloEstrada@uantwerpen.be. Department of Plant Physiology, Institute of Agricultural and Environmental Sciences, Estonian University of Life Sciences, Kreutzwaldi 1, 51014, Tartu, Estonia. Miguel.PortilloEstrada@uantwerpen.be. Department of Plant Physiology, Institute of Agricultural and Environmental Sciences, Estonian University of Life Sciences, Kreutzwaldi 1, 51014, Tartu, Estonia. Estonian Academy of Sciences, Kohtu 6, 10130, Tallinn, Estonia" |
| DOI: | 10.1007/s10265-016-0880-6 |
| ISSN/ISBN: | 1618-0860 (Electronic) 0918-9440 (Print) 0918-9440 (Linking) |
| Abstract: | "The release of stress-driven volatiles throughout leaf development has been little studied. Therefore, we subjected poplar leaves during their developmental stage (from 2 days to 2 weeks old) to wounding by a single punch hole, and measured online the wound-induced volatile organic compound emissions. Our study shows that the emission of certain volatile compounds fades with increasing leaf age. Among these compounds we found lipoxygenase products (LOX products), acetaldehyde, methyl benzoate, methyl salicylate, and mono- and sesquiterpenes. In parallel, we studied the fading of constitutive emissions of methanol during leaf maturation, as well as the rise in isoprene constitutive emission during leaf maturation and its relationship to leaf photosynthetic capacity. We found highly significant relationships between leaf chlorophyll content, photosynthetic capacity, and leaf size during leaf ageing. As the level of constitutive defences increases with increasing leaf age, the strength of the volatile signal is expected to be gradually reduced. The higher elicitation of volatile organic compound emissions (especially LOX products) in younger leaves could be an evolutionary defence against herbivory, given that younger leaves are usually more subjected to infestation and herbivory" |
| Keywords: | Butadienes/*metabolism Chlorophyll/metabolism Hemiterpenes/*metabolism Herbivory Lipoxygenase/metabolism Methanol/metabolism Pentanes/*metabolism Photosynthesis/physiology Plant Leaves/chemistry/physiology Populus/chemistry/*physiology Time Factors Volati; |
| Notes: | "MedlinePortillo-Estrada, Miguel Kazantsev, Taras Niinemets, Ulo eng 322603/ERC_/European Research Council/International Japan 2016/11/26 J Plant Res. 2017 Jan; 130(1):157-165. doi: 10.1007/s10265-016-0880-6. Epub 2016 Nov 24" |
