植物病理学报
植物病理學報
식물병이학보
ACTA PHYTOPATHOLOGICA SINICA
2010年
1期
99-102
,共4页
商文静%吴云锋%赵小明%杜昱光%商鸿生
商文靜%吳雲鋒%趙小明%杜昱光%商鴻生
상문정%오운봉%조소명%두욱광%상홍생
chito-oligosaccharides%SAR%defensive enzyme%PR-1a gene
The activity change of defensive enzymes and PR-l a gene expression of tobacco(Nicotiana tabacum)seedling induced by chaito-oligosaccharides were studied.The results showed that high level systemic acquired resistance(SAR)was expressed in tobacco plants treated with chito-oligosaccharides solution at the concentration of 50 μg/mL.PAL activity increased greatly with 2 peaks,the activity of SOD decreased initially followed by an increase with higher increment,and the activity of POD peaked early followed by a gentle fall in chito-oligosaccharide treated plants.The PR-la gene was strongly expressed in tobacco due to systemic acquired resistance induced by chito-oligosaccharides.At 168 h after inoculation the expression quantity(copies/2μL)of PR-la gene was increased to 2 469.6 in treated tobacco leaf,reached 392.6%than that at 0 h after inoculation,it Was increased 3.05 times of that in untreated control.
