Cloning and Characterization of a Pseudo-Response Regulator 7 (PRR7) Gene from Medicago Sativa Involved In Regulating the Circadian Clock

The plant lowering process represents the transition from vegetative to productive growth, and is controlled by complicated innergenetic regulation and the external environment. Flowering is closely related to the heading date and maturity crops, and has been studied for hundreds of years [1]. Currently, studies on Arabidopsis thaliana have revealed ive pathways, the vernalization, photoperiod, gibberellin, autonomous, and endogenous pathways [1]. Initially, it was discovered that day length, namely photoperiod, could be perceived by higher plants and impacted their lowering. Over these years, different models have been put forward to explain the relationship between lowering and photoperiod [2,3]. Recently, a growing number of genes have been characterized as effectors of the natural condition or internal regulatory network, which has enhanced our knowledge of the regulators mediating the lowering pathway and plant circadian clock.