Key points are not available for this paper at this time.
John M. Salmeron, Susan J. Barker, Francine M. Carland, Anand Y. Mehta, Brian J. Staskawicz, Tomato Mutants Altered in Bacterial Disease Resistance Provide Evidence for a New Locus Controlling Pathogen Recognition, The Plant Cell, Vol. 6, No. 4 (Apr., 1994), pp. 511-520
Salmeron et al. (Fri,) studied this question.