Two-component signal transduction pathways in Arabidopsis
Related Experiment Video
Updated: Sep 30, 2026

Imaging Spatial Reorganization of a MAPK Signaling Pathway Using the Tobacco Transient Expression System
Published on: March 20, 2016
Ildoo Hwang1, Huei-Chi Chen, Jen Sheen
1Department of Genetics, Harvard Medical School, Boston, MA 02114, USA.
Abstract:
The two-component system, consisting of a histidine (His) protein kinase that senses a signal input and a response regulator that mediates the output, is an ancient and evolutionarily conserved signaling mechanism in prokaryotes and eukaryotes. The identification of 54 His protein kinases, His-containing phosphotransfer proteins, response regulators, and related proteins in Arabidopsis suggests an important role of two-component phosphorelay in plant signal transduction. Recent studies indicate that two-component elements are involved in plant hormone, stress, and light signaling. In this review, we present a genome analysis of the Arabidopsis two-component elements and summarize the major advances in our understanding of Arabidopsis two-component signaling.
Related Concept Videos
Cell Signaling in Plants
Interactions Between Signaling Pathways
Convergence and divergence, and cross-talk between signaling pathways
Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...
Amplifying Signals via Second Messengers
Signal Transduction: Overview
Typically, signal transduction involves three...
Intracellular Signaling Cascades
MAPK Signaling Cascades

