title: Blue light-induced chloroplast relocation.
abstract: Chloroplast relocation movement is induced by blue light in most plants tested. Under weak light, chloroplasts move toward a brighter area in a cell (called low-fluence-rate response or accumulation movement), but they avoid strong light and move away from the light (called high-fluence-rate response or avoidance movement). Recently, mutants deficient in the chloroplast avoidance movement were isolated from Arabidopsis thaliana. The results of mutant analyses revealed that the phototropin photoreceptors phot1 and phot2 both control chloroplast accumulation while phot2 alone controls the avoidance movements.
authors.affiliation: Unit Process and Combined Circuit, PRESTO, Japan Science and Technology, Corporation, 1-8, Honcho 4-chome, Kawaguchi-city, Saitama, 332-0012 Japan.
authors.forename: Takatoshi
authors.initials: T
authors.lastname: Kagawa
authors.forename: Masamitsu
authors.initials: M
authors.lastname: Wada
mesh_terms: D017360:Arabidopsis / Q000235:genetics / Q000502:physiology* / Q000528:radiation effects; D029681:Arabidopsis Proteins / Q000235:genetics / Q000378:metabolism; D001692:Biological Transport / Q000528:radiation effects; D002736:Chloroplasts / Q000502:physiology* / Q000528:radiation effects; D056931:Cryptochromes; D029721:Drosophila Proteins; D005136:Eye Proteins; D005420:Flavoproteins / Q000235:genetics / Q000378:metabolism; D008027:Light; D009154:Mutation; D010750:Phosphoproteins / Q000235:genetics / Q000378:metabolism; D017956:Photoreceptor Cells, Invertebrate; D017346:Protein Serine-Threonine Kinases; D043562:Receptors, G-Protein-Coupled
chemical_list: D029681:Arabidopsis Proteins; C538962:CRY1 protein, Arabidopsis; D056931:Cryptochromes; D029721:Drosophila Proteins; D005136:Eye Proteins; D005420:Flavoproteins; C423903:PHOT2 protein, Arabidopsis; D010750:Phosphoproteins; D043562:Receptors, G-Protein-Coupled; C119828:cry protein, Drosophila; C103646:NPH1 protein, Arabidopsis; D017346:Protein Serine-Threonine Kinases