Projects per year
Broad mites, Polyphagotarsonemus latus Banks, are a key pest in many ornamental plants including pot azalea, Rhododendron simsii hybrid. These minute mites (<200 µm) cause browning and curling of leaves and flowers leading to economic losses as damaged plants are unmarketable. Development of resistant cultivars might lead to a sustainable solution in controlling this pest. We studied the response upon a broad mite infestation in R. simsii by means of gene expression. Data showed the induction of the jasmonic acid defence pathway in response to a broad mite infestation. Furthermore, an oxidative stress response was observed in infested plants when compared to control plants. Scanning electron microscopy of leaf morphology in eight R. simsii cultivars with a known susceptibility for broad mites revealed the presence of different trichome types. Short trichomes with a sticky end were seen in resistant or more tolerant genotypes. The outcome of this study might provide new insights in breeding for resistance against this pest in azalea.
|Title of host publication||Proceedings of the 25th International Eucarpia Symposium, Section Ornamentals: Crossing Borders|
|Editors||Johan Van Huylenbroeck, Emmy Dhooghe|
|Number of pages||5|
|Publication status||Published - 2015|
- 1 Finished
WEEKHUIDMIJT: Plant resistance to Polyphagotarsonemus latus (Acari:Tarsonemidae) in ornamental plants
Van Huylenbroeck, J., De Riek, J., Witters, J., Luypaert, G. & Maes, M.
1/08/11 → 31/07/15
- 1 Organisation and participation in conference
25th International Eucarpia Symposium, Section Ornamentals: Crossing Borders
Gil Luypaert (Speaker)28-Jun-2015 → 2-Jul-2015
Activity: Participating in or organising an event › Organisation and participation in conference