Related Experiment Video
Updated: Aug 22, 2026

Luciferase Complementation Imaging Assay in Nicotiana benthamiana Leaves for Transiently Determining Protein-protein Interaction Dynamics
Published on: November 20, 2017
Phototropins 1 and 2: versatile plant blue-light receptors
Winslow R Briggs1, John M Christie
1Dept Plant Biology, Carnegie Institution of Washington, Stanford, CA 94305, USA. briggs@andrew2.stanford.edu
Abstract:
Blue and ultraviolet-A light regulate a wide range of responses in plants, including phototropism, chloroplast migration and stomatal opening. However, the photoreceptors for these light responses have been identified only recently. The phototropins (phot1 and phot2) represent a new class of receptor kinases that appear to be exclusive to plants. Recent genetic analysis has shown that phot1 and phot2 exhibit partially overlapping functions in mediating phototropism, chloroplast migration, and stomatal opening in Arabidopsis. Although significant progress has been made in understanding the early photochemical and biochemical events that follow phototropin excitation, the details of how this excitation activates such different responses remain to be elucidated.
Related Concept Videos
Photosystem II
The pigment molecules are arranged across two photosystem domains — the antenna complex and the reaction center. The main aim of the pigment molecules...
Photoreceptors and Plant Responses to Light
Biological Clocks and Seasonal Responses
Channel Rhodopsins
Rhodopsins belong to the family of cell surface proteins called G-protein coupled receptors,...
Cell Signaling in Plants
Photoreceptors and Visual Pathways

