The Arabidopsis thaliana vernalization response requires a polycomb-like protein complex that also includes VERNALIZATION INSENSITIVE 3
作者： C. C. Wood , M. Robertson , G. Tanner , W. J. Peacock , E. S. Dennis
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摘要: In Arabidopsis thaliana, the promotion of flowering by cold temperatures, vernalization, is regulated via a floral-repressive MADS box transcription factor, FLOWERING LOCUS C (FLC). Vernalization leads to epigenetic repression FLC expression, process that requires polycomb group (PcG) protein VERNALIZATION 2 (VRN2) and plant homeodomain INSENSITIVE 3 (VIN3). We demonstrate vernalization homologues other Polycomb Repressive Complex proteins VRN2. show in planta VRN2 VIN3 are part large complex can include PcG FERTILIZATION INDEPENDENT ENDOSPERM, CURLY LEAF, SWINGER. These findings suggest single responsible for histone deacetylation at methylation vernalized plants. The abundance increases during declines after plants returned higher consistent with having role establishing repression.
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