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A receptor-like protein mediates plant immune responses to herbivore-associated molecular patterns

Adam D. Steinbrenner, Maria Muñoz-Amatriaín, Antonio F. Chaparro, Jessica Montserrat Aguilar-Venegas, Sassoum Lo, Satohiro Okuda, Gaëtan Glauser, Julien Dongiovanni, Da Shi, Marlo Hall, Daniel Crubaugh, Nicholas Holton, Cyril Zipfel, Ruben Abagyan, Ted Turlings, Timothy J. Close, Alisa Huffaker & Eric A. Schmelz

Résumé Herbivory is fundamental to the regulation of both global food webs and the extent of agricultural crop losses. Induced plant responses to herbivores promote resistance and often involve the perception of specific herbivore-associated molecular patterns (HAMPs); however, precisely defined receptors and elicitors associated with herbivore recognition remain elusive. Here, we show that a receptor confers signaling and defense outputs in response to a defined HAMP common in caterpillar oral secretions (OS). Staple food crops, including cowpea (Vigna unguiculata) and common bean (Phaseolus vulgaris), specifically respond to OS via recognition of proteolytic fragments of chloroplastic ATP synthase, termed inceptins. Using forward-genetic mapping of inceptin-induced plant responses, we identified a corresponding leucine-rich repeat recep-tor, termed INR, specific to select legume species and sufficient to confer inceptin-induced responses and enhanced defense against armyworms (Spodoptera exigua) in tobacco. Our results support the role of plant immune receptors in the perception of chewing herbivores and defense.
   
Mots-clés herbivory, LRR-RLP, PRR, HAMP, receptor
   
Citation Steinbrenner, A. D., Muñoz-Amatriaín, M., Chaparro, A. F., Aguilar-Venegas, J. M., Lo, S., Okuda, S., Glauser, G., Dongiovanni, J., Shi, D., Hall, M., Crubaugh, D., Holton, N., Zipfel, C., Abagyan, R., Turlings, T., Close, T. J., Huffaker, A., & Schmelz, E. A. (2020). A receptor-like protein mediates plant immune responses to herbivore-associated molecular patterns. Proceedings of the National Academy of Sciences of the USA, 117, 31510-31518.
   
Type Article de périodique (Anglais)
Date de publication 23-11-2020
Nom du périodique Proceedings of the National Academy of Sciences of the USA
Volume 117
Pages 31510-31518
URL https://www.pnas.org/content/117/49/31510