Flowering time control in plants involves integration of multiple signals. One of the signalling pathways in Arabidopsis involves a negative autoregulatory loop, in which the FCA protein together with FY promotes the choice of an alternative polyadenylation site within the FCA pre-mRNA to produce a transcript that does not encode a functional protein.
Amasino, R. M. (2003, September 2). Flowering time: A pathway that begins at the 3′ end. Current Biology. Cell Press. https://doi.org/10.1016/S0960-9822(03)00604-3