The signal transducing photoreceptors of plants

Enhanced responsiveness and sensitivity to blue light by blr-2 overexpression in Trichoderma atroviride

“…9a). In plants, cross-talk between cryptochromes and phytochromes that regulate plant growth and architecture has been well documented (Franklin et al, 2005).…”

“…Thus proper perception of ambient light is essential for the adaptation of an organism to its environment. Among the diverse responses regulated by light, those commonly observed are associated with pivotal processes, such as growth, development, reproduction and metabolism Franklin et al, 2005). In particular, the processes of blue-light perception, signal transduction and related responses have been extensively studied in bacteria, algae, plants and fungi.…”

Diverse photoreceptors and light responses in plants

“…ZEITLUPE (ZTL), FLAVIN-BINDING, KELCH REPEAT, F-BOX1 (FKF1) and LOV KELCH PROTEIN2 (LKP2) group proteins are blue light sensors that have LOV, F-box and Kelchrepeat domains and form signaling complexes with factors involved in the regulation of the circadian clock and photoperiodic flowering (Zoltowski and Imaizumi 2014). UV RESISTANCE LOCUS8 (UVR8) is a UV-B light receptor recently identified which uses tryptophan residues as Keywords Cryptochrome · Photomorphogenesis · Photoreceptor · Phototropin · Phytochrome Plants use sunlight not only as an energy source for photosynthesis but also as an informational cue to control a broad range of developmental and physiological responses throughout their life cycle (Franklin et al 2005;Kami et al 2010). These responses include seed germination, de-etiolation, directional growth, organelle movement, flowering, and senescence that are mediated by various cellular responses such as gene expression, protein modification etc.…”

Lysine 206 inArabidopsisphytochrome A is the major site for ubiquitin-dependent protein degradation

“…Light provides energy for photosynthesis as well as modulates many developmental processes in plants (1,2). Plants are very sensitive to changes in light conditions because they have several classes of photoreceptors such as red and far-red light-absorbing phytochromes (3), blue/ultraviolet A (UVA) light-absorbing cryptochromes, phototropins, members of the Zeitlupe family (4,5) and ultraviolet B (UVB) light-absorbing UV resistance eight proteins (6).…”