| 祝春月1, 李 智1, 矣晓翠1, 刘一依1, 姚 遥1, 陈 斌2*, 肖关丽1*.马铃薯块茎蛾取食诱导的马铃薯防御反应[J].植物保护,2024,50(4):221-229. |
| 马铃薯块茎蛾取食诱导的马铃薯防御反应 |
| Defense response of potato to Phthorimaea operculella feeding |
| 投稿时间：2023-07-10 修订日期：2023-10-29 |
| DOI：10.16688/j.zwbh.2023346 |
| 中文关键词: 马铃薯块茎蛾 马铃薯 防御酶 次生代谢物 营养物质 |
| 英文关键词:Phthorimaea operculella potato defense enzymes secondary metabolites nutrients |
| 基金项目:国家自然科学基金(32360711, 31760519)；云南省教育厅科研基金(2023Y1026) |
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| 中文摘要: |
| 为探究马铃薯在应答马铃薯块茎蛾Phthorimaea operculella取食时相关抗虫指标的动态变化, 本研究以‘青薯9号’‘合作88’‘米拉’3个马铃薯品种为材料进行室内盆栽试验, 在马铃薯块茎蛾取食0、3、6、12、24、48、72、96 h时取样测定各品种生理指标。结果表明, 被马铃薯块茎蛾取食的叶片中过氧化氢酶、多酚氧化酶、萜烯合成酶活性, 单宁和类黄酮含量与对照相比都有不同程度的显著升高, 总氨基酸含量显著下降, 且各指标在马铃薯品种之间存在差异。从各指标平均增降率来看, ‘合作88’对马铃薯块茎蛾取食的响应程度要强于‘青薯9号’和‘米拉’‘米拉’的响应程度最小。本研究为进一步明确马铃薯抗虫生理防御机制和害虫综合防治提供理论依据。 |
| 英文摘要: |
| To investigate the dynamic changes of resistance-related indicators of potatoes in response to the feeding of potato tuber moth, Phthorimaea operculella Zeller, an indoor potting test was conducted using three potato varieties (‘Qingshu no.9’ ‘Hezuo 88’ ‘Mila’), the physiological resistance-related indices of potato eaten by P.operculella for 0, 3, 6, 12, 24, 48, 72 h, and 96 h were determined for each variety. The results showed that the activities of catalase (CAT), polyphenol oxidase (PPO), terpene synthase (TPS), the content of tannin, and flavonoids in the leaves of potatoes eaten by P.operculella were significantly increased compared to the control group. Conversely, the total amino acid content was significantly decreased, and there are variations in each index among potato varieties. Analysis of the rate of change for each index indicated that ‘Hezuo 88’ exhibited a stronger response to P.operculella feeding compared to ‘Qingshu no.9’ and ‘Mila’, while ‘Mila’ displayed the least response. This study provides a theoretical understanding of potato’s physiological defense mechanisms against pests and supports the development of comprehensive pest control strategies. |
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