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Imaging Spatial Reorganization of a MAPK Signaling Pathway Using the Tobacco Transient Expression System

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Published on: March 20, 2016

MAP kinase signal transduction pathways in plants.

Peter C Morris¹

¹Heriot-Watt University, Department of Biological Sciences, Riccarton, Edinburgh, EH14 4AS.

The New Phytologist

|April 20, 2021

Summary

Mitogen-activated protein kinase (MAP kinase) pathways regulate essential plant processes like cell division and stress responses. This review explores their complex roles in plants, from hormone signaling to defense mechanisms.

Keywords:

MAP kinase MEK plant hormone signalling plant stress signalling protein phosphorylation signal transduction

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Imaging Spatial Reorganization of a MAPK Signaling Pathway Using the Tobacco Transient Expression System

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Published on: March 20, 2016

Light-mediated Reversible Modulation of the Mitogen-activated Protein Kinase Pathway during Cell Differentiation and Xenopus Embryonic Development

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Identification of Post-translational Modifications of Plant Protein Complexes

Identification of Post-translational Modifications of Plant Protein Complexes

Published on: February 22, 2014

Area of Science:

Plant Molecular Biology
Signal Transduction
Cellular Physiology

Background:

Mitogen-activated protein kinase (MAP kinase) cascades are crucial for transmitting extracellular signals in eukaryotic cells, influencing vital cellular functions.
In plants, MAP kinases are encoded by multigene families, forming complex, interacting pathways that govern cell division, differentiation, metabolism, and stress responses.

Purpose of the Study:

To review the rapidly advancing field of MAP kinase research in plants.
To consolidate current understanding of MAP kinase involvement in plant growth, development, and environmental interactions.

Main Methods:

Yeast two-hybrid system for analyzing in vitro interactions of MAP kinase cascade components.
Transient transformation of protoplasts with epitope-tagged kinases to test cascades in planta.
Review of existing literature on MAP kinase pathways in plants.

Main Results:

MAP kinases are clearly involved in plant cell division and auxin signaling regulation.
Biotic stresses (pathogens, elicitors) and abiotic stresses (wounding, cold, drought) activate plant MAP kinase pathways for defense.
Evidence suggests MAP kinase pathways are utilized in abscisic acid (ABA) signaling, and potentially ethylene and cytokinin signaling.

Conclusions:

MAP kinase pathways are central regulators of diverse physiological processes in plants.
Further research into MAP kinase functions offers significant potential for understanding plant biology and improving crop resilience.