Understanding and predicting the Phenotype of Phalaenopsis Orchids in different environments


The aim of the visit will be to examine the synchronization of CAM photosynthesis and underlying biochemistry under different temperatures and light spectra. Phalaenopsis is a major (no.1) ornamental plant in Dutch Horticulture. This visit will greatly contribute to project 14525 (STW / TKI Uitgangsmaterialen Green genetics) that aims to understand phenotypic responses of different Phalaenopsis genotypes to innovative growth environments including lighting by LEDs
Plants using Crassulacean acid metabolism (CAM photosynthesis) close their stomata during the day to reduce water loss and open them at night to allow the intake of CO2 for the production of sugars. This requires a dedicated biochemical system for temporary storage (and release) of carbon dioxide within the plant to overcome the temporal separation between light energy sequestering (during the day) and CO2 uptake. The regulation mechanism of CO2 uptake, storage and release within the photosynthesising leaves (CAM photosynthesis) is genetic adaptation, while the diurnal control is importantly influenced by environmental factors and internal circadian rhythms. Temperature and light quality are known to influence both.
While the expertise of the host/applicant is primarily on light quality, physical aspects of photosynthesis and photobiology in plants, the visitor is experienced in the biochemical aspects of CAM photosynthesis. This combination is a perfect match that will be beneficial for both parties. The STW project will gain speed and improved quality of biochemical profiling of CAM photosynthesis, while the visitor will gain experience in light quality research and physico-environmental monitoring of CAM photosynthesis. We expect at least one shared publication from this collaboration.





Dr. ir. W. van Ieperen

Verbonden aan

Wageningen University & Research, Plantenwetenschappen, Tuinbouw en Productfysiologie (HPP)


01/12/2017 tot 07/09/2018