| Enhancement of Phenylalanine Ammonia Lyase,Polyphenoloxidase, and Peroxidase in Cucumber Seedlings by Bemisia tabaci（Gennadius） （Hemiptera： Aleyrodidae） Infestation |
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| 引用本文： | ZHANG Shi-ze,;ZHANG Fan,;HUA Bao-zhen. Enhancement of Phenylalanine Ammonia Lyase,Polyphenoloxidase, and Peroxidase in Cucumber Seedlings by Bemisia tabaci（Gennadius） （Hemiptera： Aleyrodidae） Infestation[J]. 中国农业科学(英文版), 2008, 7(1): 82-87. DOI: 10.1016/S1671-2927(08)60025-5 |
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| 作者姓名： | ZHANG Shi-ze, ZHANG Fan, HUA Bao-zhen |
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| 作者单位： | [1]College of Plant Protection, Northwest A ＆ F University, Yangling 712100, P.R.China [2]Institute of Plant and Environmental Protection, Beijing Academy of Agricultural and Forestry Sciences, Beijing 100089, P.R.China |
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| 基金项目： | This research was suppotred by the National Basic Research Program of Minsistry lr Science and Technology,China (973 Program,2006CB102005-3). |
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| 摘 要： | In this study, the activities of phenylalanine ammonia lyase （PAL）, polyphenoloxidase （PPO）, and peroxidase （POD） were assayed in cucumber seedlings （Cucumis sativus L.） at 0, 6, 12, 24, 48, 72, and 96 h after they were infested by Bemisia tabaci （Gennadius） using spectrophotometric analysis. The results indicated that herbivore infestation increased the activities of PAL, PPO, and POD. The enzymes showed different activity levels at different times after the infestation. The PAL activity reached the first high peak by 23.1% at 6 h and the highest peak by 29.1% at 48 h compared to the control. The PPO activity reached the first high peak by 22.7% at 6 h and the highest peak by 52.6% at 24 h, and the POD activity reached the highest peak by 213.2% at 6 h and another higher peak value by 135.2% at 96 h. The results suggest that the enhanced activities of the enzymes may contribute to bioprotection of cucumber plants against B. tabaci infestation.
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| 关 键 词： | 黄瓜 幼苗 害虫 苯基丙氨酸氨裂解酶 多酚氧化酶 过氧化物酶 |
| 收稿时间： | 2007-04-04 |
Enhancement of Phenylalanine Ammonia Lyase, Polyphenoloxidase, and Peroxidase in Cucumber Seedlings by Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) Infestation |
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| ZHANG Shi-ze,ZHANG Fan,HUA Bao-zhen. Enhancement of Phenylalanine Ammonia Lyase, Polyphenoloxidase, and Peroxidase in Cucumber Seedlings by Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) Infestation[J]. 《Agricultural Sciences in China》, 2008, 7(1): 82-87. DOI: 10.1016/S1671-2927(08)60025-5 |
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| Authors: | ZHANG Shi-ze ZHANG Fan HUA Bao-zhen |
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| Affiliation: | 1. College of Plant Protection, Northwest A & F University, Yangling 712100, P.R.China
2. Institute of Plant and Environmental Protection, Beijing Academy of Agricultural and Forestry Sciences, Beijing 100089, P.R.China |
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| Abstract: | In this study, the activities of phenylalanine ammonia lyase (PAL), polyphenoloxidase (PPO), and peroxidase (POD) were assayed in cucumber seedlings (Cucumis sativus L.) at 0, 6, 12, 24, 48, 72, and 96 h after they were infested by Bemisia tabaci (Gennadius) using spectrophotometric analysis. The results indicated that herbivore infestation increased the activities of PAL, PPO, and POD. The enzymes showed different activity levels at different times after the infestation. The PAL activity reached the first high peak by 23.1% at 6 h and the highest peak by 29.1% at 48 h compared to the control. The PPO activity reached the first high peak by 22.7% at 6 h and the highest peak by 52.6% at 24 h, and the POD activity reached the highest peak by 213.2% at 6 h and another higher peak value by 135.2% at 96 h. The results suggest that the enhanced activities of the enzymes may contribute to bioprotection of cucumber plants against B. Tabaci infestation. |
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| Keywords: | phenylalanine ammonia lyase polyphenoloxidase peroxidase Bemisia tabaci induce response |
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