Characterizing the Immune-Eliciting Activity of Putative Microbe-Associated Molecular Patterns in Tomato
Detection of conserved microbe-associated molecular patterns (MAMPs), such as bacterial flagellin, is the first line of active defense in plants against pathogenic invaders. Successful pathogens must subvert this immune response to grow to high population density and cause disease. Flagellin from the bacterial pathogen Pseudomonas was the first identified bacterial MAMP and many species across the plant kingdom have sensitive perception systems for detecting the 22-amino acid epitope known as flg22. Tomato and several other solanaceous plants are also able to independently detect a second epitope of flagellin known as flgII-28. This chapter details four experimental protocols to identify and confirm the immune response-eliciting activity of flagellin and putative MAMPs with focus on the Pseudomonas–tomato pathosystem.
Key wordsMicrobe-associated molecular patterns (MAMPs) Flagellin flg22 flgII-28 Pseudomonas syringae Pattern-triggered immunity (PTI)
Christopher Clarke is funded by a postdoctoral research fellowship from USDA-NIFA (2015-67012-22821) Work in the Vinatzer lab is funded by the NSF (IOS-1354215 and DEB-1241068). Funding to Vinatzer was also provided in part by the Virginia Agricultural Experiment Station and the Hatch Program of the National Institute of Food and Agriculture, US Department of Agriculture.
- 22.Clarke CR, Hayes BW, Runde BJ, Wicker E, Vinatzer BA (2014) Eggplant and related species are promising genetic resources to dissect the plant immune response to Pseudomonas syringae and Xanthomonas euvesicatoria and to identify new resistance determinants. Mol Plant Pathol 15(8):814–822CrossRefPubMedGoogle Scholar