PHOTOPROTECTIVE MECHANISMS IN PLANTS-PART I

#plants #mscbotany #botany #plantphysiology #photosynthesis #photosynthetic #photoprotection #photoprotective_mechanisms #light
Photosynthetic organisms use light energy to drive the oxygenic photosynthesis. Excess light can be dangerous for the photosynthetic apparatus because it can cause photo-oxidative damage and decreases the efficiency of photosynthesis because of photoinhibition.
Photoprotection mechanisms:
Light avoidance associated with the movement of leaves and chloroplasts;
Screening of photoradiation and synthesis of antioxidant molecules and enzymes;
Quenching of singlet and triplet excited states of chlorophyll and
Repair processes for damaged photosystem II and photosystem I reaction centers...