Arabidopsis phytochrome A nuclear translocation is mediated by a far‐red elongated hypocotyl 1–importin complex

Summary Phytochrome A (phyA) is a red and far‐red (FR) sensing photoreceptor regulating plant growth and development. Its biologically active FR‐absorbing form Pfr translocates into the nucleus and subsequently regulates gene expression. Two transport facilitators, FR elongated hypocotyl 1 (FHY1) and FHY1‐like (FHL), are crucial for its cytoplasmic‐nuclear translocation. FHY1 interacts preferentially with activated phyA (Pfr) in assays with...