Feng P Guo H Chi W Chai X Sun X Xu X Ma J Rochaix JD Leister D Wang H Lu C Zhang L 2016 Light is a major environmental factor regulating flowering time, thus ensuring reproductive success of higher plants. In contrast to our detailed understanding of light quality and photoperiod mechanisms involved, the molecular basis underlying high light-promoted flowering remains elusive. Here we show that, in Arabidopsis, a chloroplast-derived signal is critical for high light-regulated flowering mediated by the FLOWERING LOCUS C (FLC). We also demonstrate that PTM, a PHD transcription factor involved in chloroplast retrograde signaling, perceives such a signal and mediates transcriptional repression of FLC through recruitment of FVE, a component of the histone deacetylase complex. Thus, our data suggest that chloroplasts function as essential sensors of high light to regulate flowering and adaptive responses by triggering nuclear transcriptional changes at the chromatin level. application/pdf https://sonar.ch/global/documents/213626 eng info:eu-repo/semantics/altIdentifier/doi/10.1073/pnas.1521599113 info:eu-repo/semantics/altIdentifier/pmid/27601637 info:eu-repo/semantics/openAccess Proceedings of the National Academy of Sciences of the United States of America. - 2016 FLC chloroplast retrograde signals chromatin remodeling flowering regulation high light Arabidopsis Arabidopsis Proteins Carrier Proteins Cell Nucleus Chloroplasts Chromatin Flowers Gene Expression Regulation, Plant Histone Deacetylases Light MADS Domain Proteins PHD Zinc Fingers Signal Transduction Transcription Factors Chloroplast retrograde signal regulates flowering. http://purl.org/coar/resource_type/c_6501