LAUSR

In plants, the floral transition is flexibly controlled by various environmental conditions and endogenous developmental cues. In Arabidopsis, six major flowering pathways respond to changes in these factors (Fornara et al., 2010). The photoperiod, vernalization, and ambient pathways monitor exogenous signals from the environment such as day length, minimum winter temperature, and ambient temperature (Fornara et al., 2010). By contrast, the autonomous, gibberellin, and age pathways respond to endogenous cues linked to developmental status (Fornara et al., 2010). Accumulating evidence indicates that the six flowering pathways converge in a network to regulate floral integrator genes FLOWERING LOCUS T (FT), TWIN SISTER OF FT (TSF), and SUPPRESSOR OF OVEREXPRESSION OF CONSTANS1 (Fornara et al., 2010).