Key points are not available for this paper at this time.
Elmon Schmelzer, , Klaus Hahlbrock, Temporal and Spatial Patterns of Gene Expression around Sites of Attempted Fungal Infection in Parsley Leaves, The Plant Cell, Vol. 1, No. 10 (Oct., 1989), pp. 993-1001
Schmelzer et al. (Sun,) studied this question.