PreprintCited by 1Plant-Microbe Interactions and ImmunityPlant Disease Resistance and GeneticsPlant Pathogens and Fungal Diseases

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Jasmonic acid signalling is targeted by a smut fungal Tin2-fold effector

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Preprint — published as 10.1093/jxb/eraf381

Abstract

In plants, jasmonate signaling is a hub integrating environmental cues with growth and development. Due to its role in balancing defense responses against pathogens, it is a target of effector proteins from various pathogens. Here, we characterized the fungal effector protein Tue1 from the Brassicaceae smut fungus Thecaphora thlaspeos . T. thlaspeos naturally infects Arabis hirsuta but can also colonize the non-host Arabidopsis thaliana . In planta, the fungal protein Tue1 hijacks the plant importin-α dependent nuclear transporter to reach the plant nucleus. It interacts with jasmonate ZIM domain 10 (JAZ10) proteins of both A. thaliana and Ar. hirsuta . Structure-guided analysis of Tue1 suggests that it binds the Jas motif of JAZ10 indicating a role in stabilization or binding competition with proteins like MYC3 and COI1. A subset of jasmonate-responsive genes is differentially regulated during T. thlaspeos infection, proposing a link of the Tue1 function to infection. Tue1 share structural similarity to the Tin2-fold family recently described in the corn smut Ustilago maydis . Our study therefore suggests that this structural effector family is expanded across fungal pathogens, although future studies have to reveal whether targeting JAZ-repressors is a conserved mechanism or specifically acquired as an adaptation to its perennial host.

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Metadata

Authors
Gul, S., Mendoza-Rojas, G., Heßler, N., Galle, S., Smits, S. H. J., Altegoer, F., & Göhre, V.
Affiliations
  • Cluster of Excellence on Plant Sciences (DE)
  • Heinrich Heine University Düsseldorf (DE)
  • Darmstadt University of Applied Sciences (DE)
Corresponding author
  • Altegoer, Florian
  • Göhre, Vera
Venue
Journal of Experimental Botany
Publisher
openRxiv
Published
2024-07-08
Volume
76
Issue
22
Pages
7051-7066
ISSN
0022-0957 (ISSN-L)
OpenAlex
W4400474916
Cited by
1
References
1
Citations by year
2024: 1
FWCI
0.00
Type
journal article
Language
en
Open access
Licence
cc-by-nc-nd
Locations
  • Journal of Experimental Botany (publishedVersion, cc-by-nc-nd)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • HAL (submittedVersion)
  • DESY Publication Database (PUBDB) (Deutsches Elektronen-Synchrotron) (submittedVersion, other-oa)
Funders
  • Schlumberger Foundation
  • Deutsche Forschungsgemeinschaft (INST 208/740-1, 458090666, INST 208/868-1, 391465903, EXC-2048, SFB1535, EXC-2048/1, GRK 2466, INST 208/740‐1 FUGG, 417919780, 2048/1, INST 208/868-1 FUGG)
Topics
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant-Microbe Interactions and Immunity
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Disease Resistance and Genetics
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Pathogens and Fungal Diseases
Keywords
jasmonic acid signaling, fungal effector proteins, JAZ repressors, Arabis hirsuta, Arabidopsis thaliana, MYC3, COI1, plant-pathogen interaction, gene expression regulation
MeSH terms
Basidiomycota, Cyclopentanes, Fungal Proteins, Plant Diseases, Signal Transduction, Arabidopsis, Arabidopsis Proteins, Oxylipins

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