The phototropin family as photoreceptors for blue light-induced chloroplast relocation |
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Authors: | Email author" target="_blank">Takatoshi?KagawaEmail author |
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Institution: | (1) Division of Biological Regulation and Photobiology, National Institute for Basic Biology, 38 Nishigonaka, Myoudaiji-cho, Okazaki 444–8585, Japan,;(2) Unit Process and Combined Circuit, PRESTO, Japan Science and Technology Corporation, 4–1–8 Honcho, Kawaguchi 332–0012, Japan, |
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Abstract: | Blue light-induced chloroplast accumulation and avoidance relocation movements are controlled by the blue light photoreceptor
phototropin. The Arabidopsis thaliana genome has two phototropin genes encoding phot1 and phot2. Each of these photoreceptors contains two LOV (light oxygen and
voltage) domains and a kinase domain. The LOV domains absorb blue light though an associated flavin mononucleotide chromophore,
while the kinase domain is thought to be associated with signal transduction. The phototropins control not only chloroplast
relocation movement, but also blue light-induced phototropic responses, leaf expansion and stomatal opening. Here I review
the role of phototropin as a photoreceptor for chloroplast photorelocation movement.
Electronic Publication |
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Keywords: | Blue light receptor Chloroplast movement LOV domain Phototropin Phy3 |
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