Theme 1 Colloquium: "Harvesting the sun…..safely and efficiently" (Lecture)
- Tuesday 5 February 2019Add to my calendar
- from 16:00
prof. Roberta Croce (VU, fac. of Science, dept. Physics and Astronomy, Amsterdam)
Photosynthesis sustains nearly all life on earth, but the simultaneous presence of excitation energy and molecular oxygen in the membrane makes it a hazardous business. If excitation energy is not immediately used for charge separation and the subsequent enzymatic reactions it can lead to the formation of reactive oxygen species that can result in the disruption of the photosynthetic apparatus. As photosynthetic organisms are exposed to strongly fluctuating environmental conditions, this imbalance occurs very often. To avoid photodamage while keeping the process working efficiently, photosynthetic organisms have thus evolved a series of regulatory mechanisms that occur at the level of the photosynthetic membrane and especially involve Photosystem I, Photosystem II and their antenna. In this presentation I will discuss our recent in silico, in vitro and in vivo data on light-harvesting regulation in plants and in the green alga Chlamydomonas reinhardtii.
Joost Bakker & Gilles de Wijs