Short- portion of the solar spectrum , especially blue light (390500 nm) and near ultraviolet (320390 nm) have a significant impact on the growth and development of plants . Research in the field of genetics and molecular biology , carried out mainly on the model plant Arabidopsis thaliana , allowed to know the three classes of receptors of blue light and UV- A fototropin , cryptochromes and flavoproteins with family Zeitlupe .