A lineage-specific Exo70 is required for receptor kinase-mediated immunity in barley
bioRxiv (Cold Spring Harbor Laboratory)
Abstract
Abstract In the evolution of land plants, the plant immune system has experienced expansion in immune receptor and signaling pathways. Lineage-specific expansions have been observed in diverse gene families that are potentially involved in immunity, but lack causal association. Here, we show that Rps8 -mediated resistance in barley to the fungal pathogen Puccinia striiformis f. sp. tritici (wheat stripe rust) is conferred by a genetic module: LRR-RK and Exo70FX12 , which are together necessary and sufficient. The Rps8 LRR-RK is the ortholog of rice extracellular immune receptor Xa21 and Exo70FX12 is a member of the Poales-specific Exo70FX clade. The Exo70FX clade emerged after the divergence of the Bromeliaceae and Poaceae, and comprises from 2 to 75 members in sequenced grasses. These results demonstrate the requirement of a lineage-specific Exo70FX12 in Rps8 LRR-RK immunity and suggest that the Exo70FX clade may have evolved a specialized role in receptor kinase signaling.
Authors 22
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University of East Anglia · Norwich Research Park · Sainsbury Laboratory
Affiliation as printed
The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich, NR4 7UK, UK
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University of East Anglia · Norwich Research Park · Sainsbury Laboratory
Affiliation as printed
The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich, NR4 7UK, UK
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University of East Anglia · Norwich Research Park · Sainsbury Laboratory
Affiliation as printed
The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich, NR4 7UK, UK
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University of East Anglia · Norwich Research Park · Sainsbury Laboratory
Affiliation as printed
The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich, NR4 7UK, UK
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University of East Anglia · Norwich Research Park · Sainsbury Laboratory
Affiliation as printed
The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich, NR4 7UK, UK
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University of East Anglia · Norwich Research Park · Sainsbury Laboratory
Affiliation as printed
The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich, NR4 7UK, UK
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University of East Anglia · Washington State University · Norwich Research Park · Sainsbury Laboratory
Affiliation as printed
Department of Crop and Soil Sciences, Washington State University, Pullman, WA 99164, USA
The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich, NR4 7UK, UK
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National Institute of Agricultural Botany
Affiliation as printed
NIAB, 93 Lawrence Weaver Road, Cambridge, CB3 0LE, England, UK
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University of East Anglia · Norwich Research Park · Sainsbury Laboratory
Affiliation as printed
The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich, NR4 7UK, UK
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University of East Anglia · Norwich Research Park · Sainsbury Laboratory
Affiliation as printed
The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich, NR4 7UK, UK
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University of East Anglia · Norwich Research Park · Sainsbury Laboratory
Affiliation as printed
The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich, NR4 7UK, UK
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University of Bologna · University of East Anglia · Norwich Research Park · Sainsbury Laboratory
Affiliation as printed
Department of Agricultural and Food Sciences, Università di Bologna, Viale G. Fanin 44, 40127 Bologna, Italy
The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich, NR4 7UK, UK
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University of Bologna · University of East Anglia · Norwich Research Park · Sainsbury Laboratory
Affiliation as printed
Department of Agricultural and Food Sciences, Università di Bologna, Viale G. Fanin 44, 40127 Bologna, Italy
The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich, NR4 7UK, UK
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University of East Anglia · Norwich Research Park · Sainsbury Laboratory
Affiliation as printed
The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich, NR4 7UK, UK
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Affiliation as printed
Department of Plant Physiology, RWTH Aachen University, 52056 Aachen, Germany
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HUN-REN Centre for Agricultural Research · Czech Academy of Sciences, Institute of Experimental Botany · Agricultural Institute
Affiliation as printed
Agricultural Institute, Centre for Agricultural Research, ELKH, Martonvásár, 2462 Hungary
Institute of Experimental Botany of the Czech Academy of Sciences, Centre of the Region Haná for Biotechnological and Agricultural Research, Šlechtitelů 31, 779 00 Olomouc, Czech Republic
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Czech Academy of Sciences, Institute of Experimental Botany
Affiliation as printed
Institute of Experimental Botany of the Czech Academy of Sciences, Centre of the Region Haná for Biotechnological and Agricultural Research, Šlechtitelů 31, 779 00 Olomouc, Czech Republic
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Czech Academy of Sciences, Institute of Experimental Botany
Affiliation as printed
Institute of Experimental Botany of the Czech Academy of Sciences, Centre of the Region Haná for Biotechnological and Agricultural Research, Šlechtitelů 31, 779 00 Olomouc, Czech Republic
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Affiliation as printed
Department of Plant Physiology, RWTH Aachen University, 52056 Aachen, Germany
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James Cook University · Australian Tropical Herbarium
Affiliation as printed
Australian Tropical Herbarium, James Cook University, Smithfield 4878, Australia
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Affiliation as printed
Department of Agricultural and Food Sciences, Università di Bologna, Viale G. Fanin 44, 40127 Bologna, Italy
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Matthew Moscou corresponding
University of East Anglia · Norwich Research Park · Sainsbury Laboratory
Affiliation as printed
The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich, NR4 7UK, UK
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