journal article Open Access Jan 25, 2021

Analysis of intraspecies diversity reveals a subset of highly variable plant immune receptors and predicts their binding sites

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Abstract
Abstract
The evolution of recognition specificities by the immune system depends on the generation of receptor diversity and on connecting the binding of new antigens with the initiation of downstream signaling. In plant immunity, the innate Nucleotide-Binding Leucine-Rich Repeat (NLR) receptor family enables antigen binding and immune signaling. In this study, we surveyed the NLR complements of 62 ecotypes of Arabidopsis thaliana and 54 lines of Brachypodium distachyon and identified a limited number of NLR subfamilies that show high allelic diversity. We show that the predicted specificity-determining residues cluster on the surfaces of Leucine-Rich Repeat domains, but the locations of the clusters vary among NLR subfamilies. By comparing NLR phylogeny, allelic diversity, and known functions of the Arabidopsis NLRs, we formulate a hypothesis for the emergence of direct and indirect pathogen-sensing receptors and of the autoimmune NLRs. These findings reveal the recurring patterns of evolution of innate immunity and can inform NLR engineering efforts.
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Details
Published
Jan 25, 2021
Vol/Issue
33(4)
Pages
998-1015
License
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Funding
National Institutes of Health
Howard Hughes Medical Institute
Gordon and Betty Moore Foundation Award: 8802
Two Blades Foundation together with Foundation for Food and Agriculture Research Award: CA19-SS-0000000046
The Berkeley Center for Structural Biology
Cite This Article
Daniil M Prigozhin, Ksenia V Krasileva (2021). Analysis of intraspecies diversity reveals a subset of highly variable plant immune receptors and predicts their binding sites. The Plant Cell, 33(4), 998-1015. https://doi.org/10.1093/plcell/koab013