Cold induction of nuclear FRIGIDA condensation in Arabidopsis

Abstract

In over-wintering annuals of Arabidopsis thaliana grown in temperate regions, prolonged cold exposure in winter, through the physiological process of vernalization, represses the expression of the potent floral repressor FLOWERING LOCUS C ( FLC ) to enable the transition to flowering in spring 1 , 2 . Recently, Zhu et al. 3 reported that cold induced nuclear condensation of FRIGIDA (FRI) for FLC repression and that cold-induced antisense RNA COOLAIR promoted FRI condensation during prolonged cold exposure. Here we report that the cold-induced formation of nuclear FRI condensates is independent of COOLAIR .

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