Systemic expression of PR genes and the development of resistance were accompanied by the micro-HR, except in the ndr1-1 mutant, in which harpin induced micro-HR formation without the development of resistance and expression of PR-1 gene.

• 除了拟南芥突变体ndr了一1外，在野生型烟草和拟南芥、拟南芥突变体。 del一1和不积累SA的NahG转基因植物上，micro一HR的发生与PR基因的诱导表达及抗病表型都是一致的，即在不同基因型植物上，有都有、无都无。