UV‐B radiation delays flowering time through changes in the PRC2 complex activity and miR156 levels in Arabidopsis thaliana

• DOI: 10.1111/pce.13166
• Publication Date: 2018-02-15T21:46:34Z
• Authors: Marcela Dotto; María Sol Gómez; María Soledad Soto; Paula Casati
• Keywords: PRC2; Reprogramming; Histone Methylation

UV-B is a high-energy component of the solar radiation perceived by plant and induces number modifications in growth development, including changes flowering time. However, molecular mechanisms underlying these are largely unknown. In present work, we demonstrate that Arabidopsis plants grown under white light supplemented with show delay time, this developmental reprogramming mediated UVR8 photoreceptor. Using combination gene expression analyses irradiation different mutants, gained insight into pathways involved observed time UV-B-exposed plants. We provide evidence downregulates MSI1 CLF, two components polycomb repressive complex 2, which consequence drives decrease H3K27me3 histone methylation MIR156 FLC genes. Modification several genes as 2 activity was also determined. exposure mutants supports involvement mostly through age pathway.