Photobiology is the scientific study of the beneficial and harmful interactions of light (technically, non-ionizing radiation) in living organisms.
[1] The field includes the study of photophysics, photochemistry, photosynthesis, photomorphogenesis, visual processing, circadian rhythms, photomovement, bioluminescence, and ultraviolet radiation effects.
[9] As it is widely known, this process happens inside of the chloroplast of photosynthetic plant cells where light absorbing pigments can be found embedded in the membranes of structures called thylakoids.
[16] On the other hand, blue and UV light regulate the germination and elongation of the plant as well as other physiological processes such as stomatal control[17] and responses to environmental stress.
However, in 2004 it was found that green light can influence stomatal activity, stem elongation of young plants and leaf expansion.
[19] These compounds are chemicals that plants produce as part of their biochemical processes and help them perform certain functions as well as protect themselves from different environmental factors.
In this case, some metabolites such as anthocyanins, flavonoids, and carotenes, can accumulate in plant tissues to protect them from UV radiation and very high light intensity[20]