The effect of light quality and the mode of illumination on chloroplast development in etiolated bean leaves.

Blue light has been shown to control a number of physiological responses ranging from the conidiation of certain fungi and the phototropism of Phycomyces to chloroplast movement and segregation, as well as to cell growth and division. Most of the existing evidence implicates a flavoprotein as the blue light photoreceptor [20, 22, 23]; arguments have also been advanced, however, for the involvement of carotenoids in blue light reception [13, 15].