Entry  
 
Name  
Circadian rhythm - plant - Oryza sativa japonica (Japanese rice)
 
Description  
The circadian system is an endogenous rhythm with the period of about 24 hours to provide temporal organization of biological activity. In Arabidopsis the circadian oscillator at the core of this system is composed of the interlocked feedback loop formed by the major transcriptional factors CCA1 (circadian clock associated), LHY (late elongated hypocotyl) and TOC1 (timing of cab), a pseudo response regulator (PRR). The morning-expressed CCA1/LHY Myb transcription factors suppress TOC1 expression by binding to its promoter. Moreover, CCA1/LHY activates the expression of PRR7/9 in the morning and then PRR7/9 repress the transcription of CCA1/LHY during the rest of the day. By contrast, the evening-expressed TOC1 activates the expression of CCA1/LHY. 
 
Class  
Organismal Systems; Environmental adaptation 
BRITE hierarchy 
 
Pathway map  
 
Other DBs  
 
Organism  
Oryza sativa japonica (Japanese rice) [GN:
osa ]
 
Gene  
4330000   OsJ_07546; two-component response regulator-like PRR1 [KO:K12127 ] 
4332464   OsPRR73; two-component response regulator-like PRR73 isoform 2 [KO:K12129 ] 
4344399   DTH7; two-component response regulator-like PRR37 isoform X1 [KO:K12129 ] 
4347674   OsJ_30112; two-component response regulator-like PRR95 [KO:K12130 ] 
 
Reference  
 
  Authors  
McWatters HG, Roden LC, Staiger D.
 
  Title  
Picking out parallels: plant circadian clocks in context.
 
  Journal  
 
Reference  
 
  Authors  
Yanovsky MJ, Kay SA.
 
  Title  
Signaling networks in the plant circadian system.
 
  Journal  
 
Reference  
 
  Authors  
Kim L, Kircher S, Toth R, Adam E, Schafer E, Nagy F.
 
  Title  
Light-induced nuclear import of phytochrome-A:GFP fusion proteins is differentially regulated in transgenic tobacco and Arabidopsis.
 
  Journal  
 
Reference  
 
  Authors  
Sakamoto K, Nagatani A.
 
  Title  
Nuclear localization activity of phytochrome B.
 
  Journal  
 
Reference  
 
  Authors  
Liu XL, Covington MF, Fankhauser C, Chory J, Wagner DR.
 
  Title  
ELF3 encodes a circadian clock-regulated nuclear protein that functions in an Arabidopsis PHYB signal transduction pathway.
 
  Journal  
 
Reference  
 
  Authors  
Zhu Y, Tepperman JM, Fairchild CD, Quail PH.
 
  Title  
Phytochrome B binds with greater apparent affinity than phytochrome A to the basic helix-loop-helix factor PIF3 in a reaction requiring the PAS domain of PIF3.
 
  Journal  
 
Reference  
 
  Authors  
Ni M, Tepperman JM, Quail PH.
 
  Title  
PIF3, a phytochrome-interacting factor necessary for normal photoinduced signal transduction, is a novel basic helix-loop-helix protein.
 
  Journal  
 
Reference  
 
  Authors  
Toth R, Kevei E, Hall A, Millar AJ, Nagy F, Kozma-Bognar L.
 
  Title  
Circadian clock-regulated expression of phytochrome and cryptochrome genes in Arabidopsis.
 
  Journal  
 
Reference  
 
  Authors  
Schultz TF, Kiyosue T, Yanovsky M, Wada M, Kay SA.
 
  Title  
A role for LKP2 in the circadian clock of Arabidopsis.
 
  Journal  
 
Reference  
 
  Authors  
Jarillo JA, Capel J, Tang RH, Yang HQ, Alonso JM, Ecker JR, Cashmore AR.
 
  Title  
An Arabidopsis circadian clock component interacts with both CRY1 and phyB.
 
  Journal  
 
Reference  
 
  Authors  
Matsushika A, Makino S, Kojima M, Yamashino T, Mizuno T.
 
  Title  
The APRR1/TOC1 quintet implicated in circadian rhythms of Arabidopsis thaliana: II. Characterization with CCA1-overexpressing plants.
 
  Journal  
 
Reference  
 
  Authors  
Sugano S, Andronis C, Ong MS, Green RM, Tobin EM.
 
  Title  
The protein kinase CK2 is involved in regulation of circadian rhythms in Arabidopsis.
 
  Journal  
 
Reference  
 
  Authors  
Mas P, Devlin PF, Panda S, Kay SA.
 
  Title  
Functional interaction of phytochrome B and cryptochrome 2.
 
  Journal  
 
Reference  
 
  Authors  
Ahmad M, Jarillo JA, Smirnova O, Cashmore AR.
 
  Title  
The CRY1 blue light photoreceptor of Arabidopsis interacts with phytochrome A in vitro.
 
  Journal  
 
Reference  
 
  Authors  
Alabadi D, Oyama T, Yanovsky MJ, Harmon FG, Mas P, Kay SA.
 
  Title  
Reciprocal regulation between TOC1 and LHY/CCA1 within the Arabidopsis circadian clock.
 
  Journal  
 
Reference  
 
  Authors  
Borevitz JO, Xia Y, Blount J, Dixon RA, Lamb C.
 
  Title  
Activation tagging identifies a conserved MYB regulator of phenylpropanoid biosynthesis.
 
  Journal  
 
Reference  
 
  Authors  
Murakami-Kojima M, Nakamichi N, Yamashino T, Mizuno T.
 
  Title  
The APRR3 component of the clock-associated APRR1/TOC1 quintet is phosphorylated by a novel protein kinase belonging to the WNK family, the gene for which is also transcribed rhythmically in Arabidopsis thaliana.
 
  Journal  
 
Reference  
 
  Authors  
Pan Y, Michael TP, Hudson ME, Kay SA, Chory J, Schuler MA
 
  Title  
Cytochrome P450 monooxygenases as reporters for circadian-regulated pathways.
 
  Journal  
 
Reference  
 
  Authors  
Harmer SL, Hogenesch JB, Straume M, Chang HS, Han B, Zhu T, Wang X, Kreps JA, Kay SA
 
  Title  
Orchestrated transcription of key pathways in Arabidopsis by the circadian clock.
 
  Journal  
 
Reference  
 
  Authors  
Mouradov A, Cremer F, Coupland G
 
  Title  
Control of flowering time: interacting pathways as a basis for diversity.
 
  Journal  
 
Reference  
 
  Authors  
Chen M, Chory J, Fankhauser C
 
  Title  
Light signal transduction in higher plants.
 
  Journal  
 
Reference  
 
  Authors  
Mas P
 
  Title  
Circadian clock signaling in Arabidopsis thaliana: from gene expression to physiology and development.
 
  Journal  
 
Reference  
 
  Authors  
Jiao Y, Lau OS, Deng XW
 
  Title  
Light-regulated transcriptional networks in higher plants.
 
  Journal  
 
Reference  
 
  Authors  
Turck F, Fornara F, Coupland G
 
  Title  
Regulation and identity of florigen: FLOWERING LOCUS T moves center stage.
 
  Journal  
 
Reference  
 
  Authors  
Imaizumi T
 
  Title  
Arabidopsis circadian clock and photoperiodism: time to think about location.
 
  Journal  
 
Reference  
 
  Authors  
McClung CR
 
  Title  
A modern circadian clock in the common angiosperm ancestor of monocots and eudicots.
 
  Journal  
 
Reference  
 
  Authors  
Doherty CJ, Kay SA
 
  Title  
Circadian control of global gene expression patterns.
 
  Journal  
 
Reference  
 
  Authors  
McClung CR, Gutierrez RA
 
  Title  
Network news: prime time for systems biology of the plant circadian clock.
 
  Journal  
 
Reference  
 
  Authors  
Lu SX, Webb CJ, Knowles SM, Kim SH, Wang Z, Tobin EM
 
  Title  
CCA1 and ELF3 Interact in the control of hypocotyl length and flowering time in Arabidopsis.
 
  Journal  
 
Reference  
 
  Authors  
Lau OS, Deng XW
 
  Title  
The photomorphogenic repressors COP1 and DET1: 20 years later.
 
  Journal  
 
Related pathway  
osa00196   Photosynthesis - antenna proteins 
 
KO pathway