New Players for Photoprotection and Light Acclimation
Denis Jallet, Michael Cantrell and Graham Peers
from: Chloroplasts: Current Research and Future Trends (Edited by: Helmut Kirchhoff). Caister Academic Press, U.K. (2016) Pages: 135-160.
Light is the source of energy for oxygenic photosynthesis. Large variations in light availability expose photoautotrophic organisms to low fluxes that limit net photosynthesis and high fluxes that are in great excess of photosynthetic capacity. Plants, algae and cyanobacteria need to adjust their photosynthetic apparatus over the time scales of light variability - from seconds to seasons - to balance the energy needs of the organism and to avoid the photooxidative damage associated with excess light energy absorption (photoprotection). This chapter reviews recent discoveries regarding the light acclimation and photoprotective processes within the chloroplast and cyanobacteria. We focus on energy dissipation pathways and the signaling pathways associated with the response to excess light stress read more ...