During the process of PB90-induced apoptosis in tobacco suspension cells, we observered NO burst after 5 min treated with 1 nmol/LPB90 by DAF-2DA staining method.

• 烟草悬浮细胞经1nmol/L PB90处理后；烟草胞内发生了NO的进发；激发子PB90处理8h内；出现两个峰值；第一个峰出现在处理后0.；5h；第二个峰出现在处理后6h；且第二个峰值大于第一个峰值;