PhD defence

PhD defence Sabrina Almeida de Carvalho

Thesis title: Jacobaea through the eyes of spectroscopy. Identifying plant interactions with the (a)biotic environment by chemical variation effects on spectral reflectance patterns

Promotor prof.dr.ir. WH (Wim) van der Putten
Co-promotor dr M Macel , dr M Schlerf
Organisation Wageningen University, Laboratory of Nematology, Resource Ecology
Date

Mon 14 October 2013 16:00 to 17:30

Venue Aula, gebouwnummer 362

Summary

Plants interact with a wide array of aboveground and belowground herbivores, pathogens, mutualists, and their natural enemies. These interactions are important drivers of spatio-temporal changes in vegetation. I investigated the potential of visible and near-infrared spectral reflectance measurements (a remote sensing technique) of leaves and flowers to detect plant chemical changes. Our expectation was that this link between chemistry changes and reflectance patterns could link to the interactions between plants and soil living creatures and nutrient cycle.

These studies have the potential in a short future to generate the linking between the biochemical concentrations of plants and the remote sensing technology. This would allow us to survey large areas and provide a better understanding of the processes involved in plant-interactions. I focused in the detection of Jacobaea vulgaris ( commonly called Ragwort, Jacob kruiskruid) chemical signals linked to plant propagation processes in order to better understand the invasion practice behind this plant species. I conclude that There is potential to detect plant-biotic interactions by analysing spectral reflectance patterns.