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Acetylation of a fungal effector that translocates host PR1 facilitates virulence. | LitMetric

Acetylation of a fungal effector that translocates host PR1 facilitates virulence.

Elife

Engineering Research Center for Precision Pest Management for Fruits and Vegetables of Qingdao, Shandong Province Key Laboratory of Applied Mycology, College of Plant Health and Medicine, Qingdao Agricultural University, Qingdao, China.

Published: November 2022

AI Article Synopsis

Article Abstract

Pathogens utilize a panoply of effectors to manipulate plant defense. However, despite their importance, relatively little is actually known about regulation of these virulence factors. Here, we show that the effector -Secreted Virulence-related Protein1 (FolSvp1), secreted from fungal pathogen f. sp. (), directly binds and translocates the tomato pathogenesis-related protein1, SlPR1, from the apoplast outside the plasma membrane to the host nucleus via its nuclear localization signal. Relocation of SlPR1 abolishes generation of the defense signaling peptide, CAPE1, from its C-terminus, and as a consequence, facilitates pathogen invasion of plants. The action of FolSvp1 requires covalent modification by acetylation for full virulence in host tomato tissues. The modification is catalyzed by the FolArd1 lysine acetyltransferase prior to secretion. Addition of an acetyl group to one residue, K167, prevents ubiquitination-dependent degradation of FolSvp1 in both and plant cells with different mechanisms, allowing it to function normally in fungal invasion. Either inactivation of FolSvp1 or removal of the acetyl group on K167 leads to impaired pathogenicity of . These findings indicate that acetylation can regulate the stability of effectors of fungal plant pathogens with impact on virulence.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9681213PMC
http://dx.doi.org/10.7554/eLife.82628DOI Listing

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