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- Publisher
- Annual Reviews
- Copyright
- Copyright © 2007 by Annual Reviews. All rights reserved
- ISSN
- 0066-4286
- eISSN
- 1545-2107
- DOI
- 10.1146/annurev.phyto.45.062806.094430
- pmid
- 17367271
- Publisher site
- See Article on Publisher Site
Abstract
Abstract Gene-for-gene resistance in plants is based on the presence of a resistance (R) gene in the host and a matching Avirulence (Avr) gene in the pathogen. Many R genes have been cloned over the past two decades, mostly from the Solanaceae. The gene products, called R proteins, display modular domain structures. R protein function has recently been shown to require dynamic interactions between the various domains. In addition to these intramolecular interactions, R proteins interact with other proteins to form signaling complexes that are able to activate an innate immune response that arrests proliferation of the invading pathogen, thereby conferring disease resistance. In this review, we summarize current understanding of R protein structure and function, as well as the molecular mechanisms underlying the activation of defense signaling processes. As well as being a rich source for R genes, Solanaceae are a leading model system in which to study inter- and intramolecular interactions of R proteins.
Journal
Annual Review of Phytopathology – Annual Reviews
Published: Sep 8, 2007