Table 1.

Known Arabidopsis Genes with Clock Functions

Circadian Clock Phenotype
GeneLocus IDFunctionLoss of FunctionOverexpression
CCA1At2g46830Single Myb domain transcription factorShort periodArrhythmic
CKB3At3g60250Casein kinase II regulatory subunitNot known (gene family)Short period
CRY1At4g08920Blue light photoreceptorLong period in blue lightShort period in blue light
CRY2At1g04400Blue light photoreceptorLong period in blue lightShort period in blue light
DET1At4g10180Repressor of photomorphogenesisShort periodNot known
ELF3At2g25930UnknownArrhythmic in continuous lightLong period
ELF4At2g40080UnknownArrhythmicNot known
GIAt1g22770UnknownShort period, low amplitudeShort period, low amplitude
LHYAt1g01060Single Myb domain transcription factorShort periodArrhythmic
LUXAt3g46640Myb transcription factorArrhythmicArrhythmic
PHYAAt1g09570Red light photoreceptorLong period in far-red lightShort period in far-red light
PHYBAt2g18790Red light photoreceptorLong period in red light, leading phase in white lightShort period in red light, lagging phase in white light
PIF3At1g09530Basic helix-loop-helix transcription factorWild typeWild type
PRR3At5g60100Pseudo-response regulatorShort periodWild type
PRR5At5g24470Pseudo-response regulatorShort periodLow amplitude, long period
PRR7At5g02810Pseudo-response regulatorLong periodNot known
PRR9At2g46790Pseudo-response regulatorLong periodShort period
SRR1At5g59560UnknownLeading phase, low amplitudeNot known
TICGene not yet identifiedShort period, low amplitudeNot known
TOC1At5g61380Pseudo-response regulatorShort periodArrhythmic
ZTLAt5g57360F-box proteinLong periodArrhythmic