Green light: a neglected colour in photobiology

Summary

Green light was often a bit neglected in photobiology, but now an increasing number of researchers are realizing that green light deserves more attention. This study advances the understanding of light quality and plant growth and finding the optimal spectrum when growing plants under LED lighting in controlled environment agriculture. Tomato is used in this study as it is the physiological and molecular model crop for fruit-bearing plants, and it has a day-neutral response of photoperiodic flowering. The interactive effects of green light with blue or far-red light on elongation were discussed, with the effects on biomass being dependent on other growth conditions. Green light also induced different responses when used singly or in combination. In both cryptochromes and phytochromes, an unknown photoreceptor was likely involved in green light signals.