Analysis of the light intensity dependence of the growth of Synechocystis and of the light distribution in a photobioreactor energized by 635 nm light.

摘要: Synechocystis gathered momentum in modelling studies and biotechnological applications owing to multiple factors like fast growth, ability fix carbon dioxide into valuable products, the relative ease of genetic manipulation. physiology metabolism, consequently, productivity Synechocystis-based photobioreactors (PBRs), are heavily light modulated. Here, we set up a turbidostat-controlled lab-scale cultivation system order study influence varying orange-red intensities on growth characteristics photosynthetic activity. activity were found raise as supplied intensity increased 500 μmol photons m-2 s-1 enter photoinhibition state only at 800 s-1. Interestingly, reverting non-photo-inhibiting unveiled be able promptly recover. Furthermore, our characterization displayed clear correlation between variations rate cell size, extending phenomenon previously observed other cyanobacteria. Further, applied approach simulate effects produced by incident its local distribution within PBR vessel. Our model simulations suggested that could enhanced finely regulating prevent cells from experiencing light-induced stress induce their exploitation areas different formed In latter case, heterogeneous would allow for an optimized usage light.