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Schlagwörter:
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Zusammenfassung:
Day-length perception and interpretation are central mechanisms to choose the ideal flowering time point. We provide evidence that the core spliceosomal component GAMETOPHYTIC FACTOR 1 (GFA1) constitutes a key photoperiodic switch, which enables flowering under long-day (LD) conditions. We have previously shown that GFA1 is essential for reproductive success, as homozyous mutants cannot be recovered. In order to investigate the role of GFA1 in sporophytic tissue, we generated gfa1 hypomorphic (gfa1hyp) plants, which fail to initiate flowering in LD. A comprehensive transcriptome survey suggests, that GFA1 mediates pre-mRNA splicing in a substrate specific manner. We,
in addition, present the identification and characterization of GFA1 targets and discuss the implication of our results for flowering time control.
