... significantlysuppressed as compared with that in the ParA1 zone. In the ParA1 zone, the ion leakage increased dramati-cally within 12–24 h, whereas in the PR zone the ionleakage rose to a peak of 25% at 12 h and ... The antagonistic effect of hydroxyl radical on the development of a hypersensitive response in tobacco Sheng Deng1,2,*, Mina Yu1,2,*, Ying Wang1, Qin Jia1, Ling Lin2and Hansong Dong11 ... + ParA1, ParA1 in ltration after H2O treatment; A4 00, 400 lM ABA pretreatment; A + ParA1, ParA1 in ltration after ABAtreatment. All the spectra were representative of at least three measurements...