Journal
JOURNAL OF PLANT PHYSIOLOGY
Volume 163, Issue 3, Pages 256-272Publisher
ELSEVIER GMBH
DOI: 10.1016/j.jplph.2005.12.001
Keywords
AvrBs4; guard model; receptor-ligand model; tetratricopeptide repeats; transcriptional activation
Categories
Ask authors/readers for more resources
Plant disease resistance (R) genes mediate specific recognition of pathogens via perception of cognate avirulence (avr) gene products. The numerous highly similar AvrBs3-like proteins from the bacterial. genus Xanthomonas provide together with their corresponding R proteins a unique biological resource to dissect the molecular basis of recognition specificity. A central question in this context is if R proteins that mediate recognition of structurally similar Avr proteins are themselves functionally similar or rather dissimilar. The recent isolation of rice xa5, rice Xa27 and tomato Bs4, R genes that collectively mediate recognition of avrBs3-like genes, provides a first clue to the molecular mechanisms that plants employ to detect AvrBs3-like proteins. Their initial characterization suggests that these R proteins are structurally and functionally surprisingly diverge. This review summarizes the current knowledge on R-protein-mediated recognition of AvrBs3-like proteins and provides working models on how recognition is achieved at the molecular level. (c) 2005 Published by Elsevier GmbH.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available