Mooney, Brian C and Mantz, Melissa and Graciet, Emmanuelle and Huesgen, Pitter F and Klemenčič, Marina (2021) Cutting the line: manipulation of plant immunity by bacterial type III effector proteases. Journal of Experimental Botany, 72 (9). pp. 3395-3409. ISSN 0022-0957

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Abstract

Pathogens and their hosts are engaged in an evolutionary arms race. Pathogen-derived effectors promote virulence by targeting components of a host’s innate immune system, while hosts have evolved proteins that sense effectors and trigger a pathogen-specific immune response. Many bacterial effectors are translocated into host cells using type III secretion systems. Type III effector proteases irreversibly modify host proteins by cleavage of peptide bonds and are prevalent among both plant and animal bacterial pathogens. In plants, the study of model effector proteases has yielded important insights into the virulence mechanisms employed by pathogens to overcome their host’s immune response, as well as into the mechanisms deployed by their hosts to detect these effector proteases and counteract their effects. In recent years, the study of a larger number of effector proteases, across a wider range of pathogens, has yielded novel insights into their functions and recognition. One key limitation that remains is the lack of methods to detect protease cleavage at the proteome-wide level. We review known substrates and mechanisms of plant pathogen type III effector proteases and compare their functions with those of known type III effector proteases of mammalian pathogens. Finally, we discuss approaches to uncover their function on a system-wide level.

Item Type:	Article
Keywords:	Degradomics; effector proteases; host–pathogen interactions; hypersensitive response; Pseudomonas syringae; regulated cell death; type III secretion system;
Academic Unit:	Faculty of Science and Engineering > Biology Faculty of Science and Engineering > Research Institutes > Human Health Institute
Item ID:	17091
Identification Number:	https://doi.org/10.1093/jxb/erab095
Depositing User:	Emmanuelle Graciet
Date Deposited:	03 Apr 2023 15:46
Journal or Publication Title:	Journal of Experimental Botany
Publisher:	Oxford University Press
Refereed:	Yes
URI:	Publisher
Use Licence:	This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

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