Research of PKS2 Interaction with CAM4 in Arabidopsis thailana Research Advances on Phototropin Receptor and Phototropin Signaling Mechanism in Plant Specificity and Crosstalk of Phototropin with Cryptochrome and Phytochrome in Regulating Hypocotyl Phototropism Phototropins and Their LOV Domains: Versatile Plant Blue-Light Receptors Clues to the signals for chloroplast photo-relocation from the lifetimes of accumulation and avoidance responses Blue-light-induced rapid chloroplast de-anchoring in Vallisneria epidermal cells