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Curr Opin Plant Biol. 2011 Aug;14(4):358-64. doi: 10.1016/j.pbi.2011.03.007. Epub 2011 Mar 30.

Redox-based protein modifications: the missing link in plant immune signalling.

Author information

1
University of Edinburgh, Institute of Molecular Plant Sciences, King's Buildings, Daniel Rutherford Building, Mayfield Rd, Edinburgh, EH9 3JR, United Kingdom. sspoel@staffmail.ed.ac.uk

Abstract

Activation of plant immunity is associated with dramatic changes in the cellular redox status. Both oxidative and reductive bursts have been described that trigger a set of down stream responses resulting in reprogramming of the transcriptome and establishment of disease resistance. Nonetheless, how these redox changes are sensed and signal to downstream regulators remained a missing link in studies of plant immunity. Emerging evidence now indicates that pathogen-induced changes in the cellular redox environment are sensed by reactive cysteine residues of key regulatory proteins. Varying degrees of reversible, oxidative cysteine modifications control the activity, localization, protein-interaction and stability of regulatory proteins. These diverse effects on protein function make post-translational redox-based modifications potent modulators of plant immunity.

PMID:
21454121
DOI:
10.1016/j.pbi.2011.03.007
[Indexed for MEDLINE]

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