Abstract

Blue light regulates various aspects of plant development. Extensive research using Arabidopsis thaliana has advanced our understanding of blue-light photoreceptors and signal transduction pathways in flowering plants, but our knowledge of blue-light signaling in other plant systems, particularly in cryptogams (i.e. ferns, mosses, algae and so on) has lagged behind. The recent cloning and characterization of the blue-light photoreceptors of a fern ( Adiantum capillus-veneris), a moss ( Physcomitrella patens) and two algae ( Chlamydomonas reinhardtii and Euglena gracilis) have provided new insights into blue-light signaling in plants.

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