| Effect of Exogenous MJA Treatment of Tea Plants on the Growth of Geometrid Larvae |
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| 作者姓名： | GUI Lian-you CHEN Zong-mao LIU Shu-sheng |
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| 作者单位： | [1]Institute of Applied Entomology, Zhejiang University, Hangzhou 310029, P.R.China [2]Key Laboratory of Tea Chemical Engineering, Ministry of Agriculture/Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, P.R, China [3]Agricultural College, Yangtze University, Hubei 434025, P.R. China |
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| 基金项目： | 国家自然科学基金，Key Laboratory Foundation of Tea Chemical Engineering |
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| 摘 要： | The effect of tea plant Camellia sinensis induced by exogenous methyl jasmonate （MJA） on lipoxygenase （LOX）, polyphenol oxidase （PPO） and proteinase inhibitor （PI） activity in the leaves of tea plants, as well as the growth and midgut proteinase activity of the geometrid Ectropis obliqua larvae were studied. MJA significantly induced LOX, PPO and PI activity in leaves of tea plants. When geometrid larvae have fed on leaves of tea plants treated with MJA, the activities of the high alkaline trypsin-like enzyme and chymotrypsin-like enzyme in their midgut were significantly inhibited, but the activities of the low alkaline trypsin-like enzyme in their midgut were unaffected, leading to imbalance between different types of proteinase activity in the midgut of the larvae and in turn, the growth were inhibited. These chains of response may be an important mechanism of the direct resistance induced by MJA-treatment of tea plant on geometrid larvae.
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| 关 键 词： | 玉米 尺蠖娥 多酚氧化酶 蛋白酶抑制剂 MJA |
Effect of Exogenous MJA Treatment of Tea Plants on the Growth of Geometrid Larvae |
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| GUI Lian-you CHEN Zong-mao LIU Shu-sheng.Effect of Exogenous MJA Treatment of Tea Plants on the Growth of Geometrid Larvae[J].Agricultural Sciences in China,2005,4(9):673-679. |
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| Authors: | GUI Lian-you CHEN Zong-mao LIU Shu-sheng |
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| Abstract: | The effect of tea plant Camellia sinensis induced by exogenous methyl jasmonate (MJA) on lipoxygenase (LOX), polyphenol oxidase (PPO) and proteinase inhibitor (PI) activity in the leaves of tea plants, as well as the growth and midgut proteinase activity of the geometrid Ectropis obliqua larvae were studied. MJA significantly induced LOX, PPO and PI activity in leaves of tea plants. When geometrid larvae have fed on leaves of tea plants treated with MJA, the activities of the high alkaline trypsin-like enzyme and chymotrypsin-like enzyme in their midgut were significantly inhibited, but the activities of the low alkaline trypsin-like enzyme in their midgut were unaffected, leading to imbalance between different types of proteinase activity in the midgut of the larvae and in turn, the growth were inhibited. These chains of response may be an important mechanism of the direct resistance induced by MJA-treatment of tea plant on geometrid larvae. |
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| Keywords: | Methyl jasmonate Proteinase inhibitors Midgut proteinase Ectropis obliqua Camellia sinensis |
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