Phytochrome-interacting transcription factors PIF4 and PIF5 induce leaf senescence in Arabidopsis

In plants, light levels are sensed by phytochromes, and prolonged light deprivation triggers leaf senescence. Here, Sakuraba et al. show that the phytochrome-interacting transcription factors, PIF4 and PIF5, connect light sensing pathways with transcriptional networks that regulate leaf senescence in Arabidopsis.