title: Mutants of circadian-associated PRR genes display a novel and visible phenotype as to light responses during de-etiolation of Arabidopsis thaliana seedlings.
abstract: In Arabidopsis thaliana, it is currently accepted that certain mutants with lesions in clock-associated genes commonly display hallmarked phenotypes with regard to three characteristic biological events: (i) altered rhythmic expression of circadian-controlled genes, (ii) changes in flowering time, and (iii) altered sensitivity to red light in elongation of hypocotyls. During the course of examination of the clock-associated mutants of PSEUDO-RESPONSE REGULATORS, PRRs, including TOC1 (PRR1), we found that they commonly show another visible phenotype of anomalous greening responses upon the onset to light exposure of etiolated seedlings. These findings are indicative of a novel link between circadian rhythms and chloroplast development.
authors.affiliation: Laboratory of Molecular Microbiology, School of Agriculture, Nagoya University, Nagoya, Japan.
authors.forename: Takahiko
authors.initials: T
authors.lastname: Kato
authors.forename: Masaya
authors.initials: M
authors.lastname: Murakami
authors.forename: Yuko
authors.initials: Y
authors.lastname: Nakamura
authors.forename: Shogo
authors.initials: S
authors.lastname: Ito
authors.forename: Norihito
authors.initials: N
authors.lastname: Nakamichi
authors.forename: Takafumi
authors.initials: T
authors.lastname: Yamashino
authors.forename: Takeshi
authors.initials: T
authors.lastname: Mizuno
mesh_terms: D017360:Arabidopsis / Q000235:genetics / Q000502:physiology*; D029681:Arabidopsis Proteins / Q000235:genetics / Q000378:metabolism*; D002736:Chloroplasts / Q000502:physiology; D002940:Circadian Rhythm / Q000502:physiology; D008027:Light; D009154:Mutation; D010641:Phenotype; D036226:Seedlings / Q000235:genetics / Q000502:physiology*; D014157:Transcription Factors
chemical_list: D029681:Arabidopsis Proteins; C411822:TOC1 protein, Arabidopsis; D014157:Transcription Factors