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当前位置: 首页 > 文章 > 冷激及H_2O_2处理对采后番茄果实抗病性的诱导 食品科学 2008,29 (5) 453-456
Position: Home > Articles > Induced Disease-resistance of Postharvest Tomato by Cold-shock and H_2O_2 Treatment FOOD SCIENCE 2008,29 (5) 453-456

冷激及H_2O_2处理对采后番茄果实抗病性的诱导

作  者：
王菲;生吉萍;范蓓;于萌萌;申琳
单  位：
中国农业大学食品科学与营养工程学院
关键词：
番茄;冷激;病害;H2O2;抗病相关酶
摘  要：
以番茄果实为试材,研究冷激对采后番茄果实抗病性的影响以及H2O2在其中的作用。结果表明,冷激提高了番茄果实的抗病指数,诱导了冷藏初期番茄果实中H2O2含量的升高和谷胱甘肽转移酶活性的提高,并且诱导了抗病相关酶苯丙氨酸解氨酶(PAL),几丁质酶和β-1,3葡聚糖酶的活性增加。外源H2O2处理可以促进冷激诱导的果实内H2O2含量的升高和谷胱甘肽转移酶的提高,并且促进抗病相关酶活的诱导,而外源抑制H2O2会使诱导作用大大减弱。由此得出结论,冷激可以诱导采后番茄果实的抗病性,提高抗病相关酶活,H2O2参与了冷激介导的抗病性增强。
译  名：
Induced Disease-resistance of Postharvest Tomato by Cold-shock and H_2O_2 Treatment
作  者：
WANG Fei,SHENG Ji-ping,FAN Bei,YU Meng-meng,SHEN Lin(College of Food Science and Nutritional Engineering,China Agricultural University,Beijing 100083,China)
关键词：
tomato;cold-shock;disease;hydrogen peroxide;anti-disease enzyme
摘  要：
The effects of hydrogen peroxide on the induced disease-resistance of tomato fruits by cold-shock treatment were studied.Cold-shock treatment could induce the disease-resistance of tomato fruits,enhance the endogenous H2O2 content in the beginning of storage and increase the activity of GST.Furthermore,cold-shock could induce the activities of some anti-disease enzymes,including PAL,chitinase and β-1,3 glucanase.The inducement of H2O2 content and activity of GST could be accelerated by pretreatment with H2O2 before cold-shock,which promoted the induction of anti-disease enzyme activities.All of the inductions were inhibited by pretreatment with dimethylthiourea before cold-shock.In conclusion,the cold-shock treatment could induce the disease-resistance of postharvest tomato fruits,and hydrogen peroxide played an important role in the progress.

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