Abstract
Toll/Interleukin-1 receptor (TIR) domains are integral to immune systems across all kingdoms. In plants, TIRs are present in nucleotide-binding leucine-rich repeat (NLR) immune receptors, NLR-like, and TIR-only proteins. Although TIR-NLR and TIR signaling in plants require the ENHANCED DISEASE SUSCEPTIBILITY 1 (EDS1) protein family, TIRs persist in species that have no EDS1 members. To assess whether particular TIR groups evolved with EDS1, we searched for TIR-EDS1 co-occurrence patterns. Using a large-scale phylogenetic analysis of TIR domains from 39 algal and land plant species, we identified 4 TIR families that are shared by several plant orders. One group occurred in TIR-NLRs of eudicots and another in TIR-NLRs across eudicots and magnoliids. Two further groups were more widespread. A conserved TIR-only group co-occurred with EDS1 and members of this group elicit EDS1-dependent cell death. In contrast, a maize (Zea mays) representative of TIR proteins with tetratricopeptide repeats was also present in species without EDS1 and induced EDS1-independent cell death. Our data provide a phylogeny-based plant TIR classification and identify TIRs that appear to have evolved with and are dependent on EDS1, while others have EDS1-independent activity.
Original language | English |
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Pages (from-to) | 626-642 |
Number of pages | 17 |
Journal | Plant Physiology |
Volume | 191 |
Issue number | 1 |
Early online date | 13 Oct 2022 |
DOIs | |
Publication status | Published - Jan 2023 |
Bibliographical note
Publisher Copyright:VC The Author(s) 2022.
Funding
We thank Jonathan Jones (Sainsbury Laboratory, Norwich UK) for sharing N. tabacum RNAi:EDS1 seeds. We also thank Artem Pankin (formerly MPIPZ) for advice on phylogenetic analyses and the Earlham Institute Scientific Computing group alongside the Norwich BioScience Institutes Partnership Computing infrastructure for Science (CiS) group for access to high–performance computing resources. This work was supported by the Max-Planck Society (J.E.P. and F.L.), Deutsche Forschungsgemeinschaft (DFG; German Research Foundation) SFB-1403–414786233 (J.E.P., D.L., O.J., and H.L.), DFG/Agence Nationale de la Recherche Trilateral “RADAR” grant ANR-15-CE20-0016-01 (J.E.P. and J.A.D.), DFG SPP “DeCrypt” PA-917/8-1 (J.E.P. and C.U.), Germany’s Excellence Strategy CEPLAS (EXC-2048/1, Project 390686111) (J.E.P.), the Biotechnology and Biological Sciences Research Council (BBSRC Doctoral Training Program BB/M011216/1 to ELB), the EC j European Research Council (grant ERC-2016-STG-716233-MIREDI to K.V.K.) and NIH Director’s Award (1DP2AT011967-01 to K.V.K. and E.L.B.). O.J. is a member of the International Max-Planck PhD Research School (IMPRS). H.N. was supported within the framework of MadLand (http://madland.science; DFG priority program 2237). This work was supported by the Max-Planck Society (J.E.P. and F.L.), Deutsche Forschungsgemeinschaft (DFG; German Research Foundation) SFB-1403–414786233 (J.E.P., D.L., O.J., and H.L.), DFG/Agence Nationale de la Recherche Trilateral “RADAR” grant ANR-15-CE20-0016-01 (J.E.P. and J.A.D.), DFG SPP “DeCrypt” PA-917/8-1 (J.E.P. and C.U.), Germany’s Excellence Strategy CEPLAS (EXC-2048/1, Project 390686111) (J.E.P.), the Biotechnology and Biological Sciences Research Council (BBSRC Doctoral Training Program BB/M011216/1 to ELB), the EC | European Research Council (grant ERC-2016-STG-716233-MIREDI to K.V.K.) and NIH Director’s Award (1DP2AT011967-01 to K.V.K. and E.L.B.). O.J. is a member of the International Max-Planck PhD Research School (IMPRS). H.N. was supported within the framework of MadLand (http://madland.science; DFG priority program 2237).
Funders | Funder number |
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Agence Nationale de la Recherche Trilateral | ANR-15-CE20-0016-01 |
CEPLAS | 390686111, EXC-2048/1 |
DFG SPP | PA-917/8-1 |
Norwich UK | |
Sainsbury Laboratory | |
National Institutes of Health | 1DP2AT011967-01 |
California Department of Fish and Game | |
Biotechnology and Biological Sciences Research Council | BB/M011216/1 |
European Commission | |
European Research Council | ERC-2016-STG-716233-MIREDI |
Deutsche Forschungsgemeinschaft | SFB-1403–414786233 |
Max-Planck-Gesellschaft | |
International Max Planck Research School for Advanced Methods in Process and Systems Engineering |
Keywords
- Structural basis
- Pathogen effector
- Tir domains
- Self-association
- Resistance protein
- Evolution
- Family
- Cell-death
- Nad(+) cleavage activity
- Defense