found: Regulation of plant growth and development by light, 1996:pp. 1-2 (in a single species there may be as many as five different phytochromes) p. 9 (phytochromes are the best characterized photoreceptors for plants)
found: Concise encyc. biology, 1996 (phytochrome: a ubiquitous plant pigment ... It is a water-soluble, blue chromoprotein ... It is an important photoreceptor, which mediates the light sensitivity of many growth and developmental processes)
found: Encyc. of molecular biology, 1994:under photoreceptor (known photoreceptors include bacteriochlorophyll, bacteriorhodopsin, chlorophyll, cryptochrome, phytochrome, protochlorophyll, rhodopsin, and certain carotenoid, biliprotein, flavoprotein and haem pigments)
found: Blum, D The role of red and blue light in leaf and cotyledon expansion, 1998:leaf 8 ("Throughout the plant life cycle, from seed to seedling, through vegetative growth, floral development and eventually seed set, phytochrome photoreceptors play an important role in controlling and fine tuning plant development in response to the light environment.") leaf 9 ("Phytochromes are a family of related photoreversible pigments that absorb mainly red and far-red light but also in the blue wavelengths, though to a lesser degree. Each phytochrome consists of an open chain tetrapyrole chromophore attached to an apoprotein.")
