Abstract
Priming is a phenomenon of plants in which they can more rapidly and extensively mount defense responses to pathogen invasion. This phenomenon is not only of scientific interest but also important for its potential application in strengthening disease resistance. However, the mechanism of priming is largely unknown1).
We have previously reported that bacterial lipopolysaccharide (LPS) induces defense responses associated with PCD in suspension cultured rice cells2). We recently found that LPS also has a priming activity in our model system.
In this poster, we discuss the mechanism of priming based on the results of phytohormon treatment and the analysis of several mutants. We also use lipooligosaccharide (LOS), with a defined structure obtained from a mutant bacterium with a compromised LPS biosynthesis, to dissect these activities and identify the structural elements required for them.
1)Conrath, U. et al., MPMI, 19, 1062 (2006). 2)Desaki, Y. et al., PCP, 47, 1530 (2006)
