Mutants of circadian-associated PRR genes display a novel and visible phenotype as to light responses during de-etiolation of Arabidopsis thaliana seedlings.
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.
Kato
Takahiko
T
Laboratory of Molecular Microbiology, School of Agriculture, Nagoya University, Nagoya, Japan.
Murakami
Masaya
M
Nakamura
Yuko
Y
Ito
Shogo
S
Nakamichi
Norihito
N
Yamashino
Takafumi
T
Mizuno
Takeshi
T
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
D029681:Arabidopsis Proteins; C411822:TOC1 protein, Arabidopsis; D014157:Transcription Factors