A flagellin-induced complex of the receptor FLS2 and BAK1 initiates plant defence

Delphine Chinchilla (), Cyril Zipfel, Silke Robatzek, Birgit Kemmerling, Thorsten Nürnberger, Jonathan D. G. Jones, Georg Felix and Thomas Boller ()
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Delphine Chinchilla: Zurich-Basel Plant Science Center, Botanical Institute, University of Basel, Hebelstrasse 1, 4056 Basel, Switzerland
Cyril Zipfel: Zurich-Basel Plant Science Center, Botanical Institute, University of Basel, Hebelstrasse 1, 4056 Basel, Switzerland
Silke Robatzek: Zurich-Basel Plant Science Center, Botanical Institute, University of Basel, Hebelstrasse 1, 4056 Basel, Switzerland
Birgit Kemmerling: Institute of Plant Biochemistry, ZMBP, University of Tuebingen, 72076 Tuebingen, Germany
Thorsten Nürnberger: Institute of Plant Biochemistry, ZMBP, University of Tuebingen, 72076 Tuebingen, Germany
Jonathan D. G. Jones: The Sainsbury Laboratory, Colney Lane, Norwich, Norfolk NR4 7UH, UK
Georg Felix: Zurich-Basel Plant Science Center, Botanical Institute, University of Basel, Hebelstrasse 1, 4056 Basel, Switzerland
Thomas Boller: Zurich-Basel Plant Science Center, Botanical Institute, University of Basel, Hebelstrasse 1, 4056 Basel, Switzerland

Nature, 2007, vol. 448, issue 7152, 497-500

Abstract: BAK1 door to plant immunity Plants contain various steroids and sterols with structures similar to those of steroid hormones in animals, and after painstaking research the brassinosteroids have become generally accepted as essential plant hormones. A key part of the pathway is the recognition of brassinosteroids by the BRI1 receptor and its co-receptor BAK1. But the news that BAK1 has an entirely unexpected, different function could complicate matters. BAK1 has been found to specifically associate with the innate immunity receptor FLS2 when this receptor is stimulated by its known ligand, flagellin. The innate immunity response is much weakened in Arabidopsis mutated in the bak1 gene. BAK1 therefore appears to have a dual role in development and innate immunity — as is the case for the well-known TOLL receptor in Drosophila.

Date: 2007
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DOI: 10.1038/nature05999

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