《环境昆虫学报》

作者	单位
蒲恒浒1,2，郅军锐1*，曾广1	（1. 贵州大学昆虫研究所，贵州山地农业病虫害重点实验室，贵阳 550025；2. 贵州省林业厅,贵阳 550001）

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中文摘要:

研究了西花蓟马取食茉莉酸、水杨酸甲酯、机械损伤、虫伤处理诱导的番茄植株对其虫体保护酶活性的影响。研究发现，不同处理的番茄植株对西花蓟马过氧化物酶（POD）、过氧化氢酶（CAT）和超氧化物歧化酶（SOD）3种保护酶的活性有明显的影响。只有西花蓟马取食茉莉酸处理的番茄植株24 h，POD活性明显升高，取食其它处理及在其它时间下，POD活性与对照没有明显的变化或活性受到抑制。取食水杨酸甲酯处理的番茄植株6 h 和24 h，西花蓟马CAT活性均受到激发；取食虫害植株的3个时间段下，西花蓟马酶活性一直受到抑制；西花蓟马取食茉莉酸处理及机械损伤处理番茄植株，CAT酶活性在任何时间下都没有明显的变化或受到抑制。取食水杨酸诱导处理的番茄植株，西花蓟马SOD活性在6 h和24 h明显升高，36 h明显下降；但取食其它处理的SOD酶活性均在36 h明显升高。结果说明西花蓟马3种保护酶活性在取食不同处理诱导的番茄植株的不同时间下各不相同，说明保护酶活性的变化与不同诱导处理及时间密切相关。

英文摘要:

The activities of protective enzymes in Frankliniella occidentalis after feeding tomato plants treated with jasmonic acid (JA) induction, methyl salicylate (MeSA), mechanical wounding (MD) and damage by thrips- feeding (DTF), respectively, were detected. The results showed that different treatments of tomato plants could induce change of activities of peroxidase (POD)，catalase (CAT) and superoxide dismutase (SOD) in F. occidentalis. POD activity increased significantly at 24 h after feeding tomato plant by JA induction, while activities of POD were not significant different or lower than the control induced by other treatments and at different feeding times. The CAT activity increased at 6 hand 24 h after feeding the tomato plant by MeSA induced. The activities of CAT induced by DTF were suppressed under the different feeding times.The enzyme activities of thrips feeding JA induction or MD plant were not significant different compared with the control or lower than control at each time. The SOD activities induced by MeSA were higher than that of control at 6 h and 24 h, and were inhibited at 36 h,while the activities of SOD rose at 36 h when F. occidentalis feeding other treated tomato. The results indicated that the activities of protective enzymes were closely related to the different induction treatments and times.

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