Controls photoperiodic flowering response. Seems to be one of the component of the circadian clock. Expression of several members of the ARR-like family is controlled by circadian rhythm. The particular coordinated sequential expression of PRR73, PRR37, PRR95, PRR59 and PPR1 result to circadian waves that may be at the basis of the endogenous circadian clock (By similarity). Expressed with a circadian rhythm showing a broad peak in the late day. Belongs to the ARR-like family. Lacks the phospho-accepting Asp (here Glu-95), present in the receiver domain, which is one of the conserved features of two-component response regulators (ARRs) family.