寄主转换对B型烟粉虱和温室粉虱海藻糖含量和海藻糖酶活性的影响

中国农业科学 ›› 2006, Vol. 39 ›› Issue (7): 1387-1394 .

寄主转换对B型烟粉虱和温室粉虱海藻糖含量和海藻糖酶活性的影响

雷芳,张桂芬,万方浩,马骏

农业部生物防治资源研究与利用重点实验室，中国农科院生防所

收稿日期:2006-03-06 修回日期:2006-05-14 出版日期:2006-07-10 发布日期:2006-07-10
通讯作者: 万方浩

Effects of Plant Species Switching on Contents and Dynamics of Trehalose and Trehalase Activity of Bemisia tabaci B-biotype and Trialeurodes vaporariorum

Fang Lei,GuiFen Zhang,FangHao Wan,Jun Ma

农业部生物防治资源研究与利用重点实验室，中国农科院生防所

Received:2006-03-06 Revised:2006-05-14 Online:2006-07-10 Published:2006-07-10
Contact: FangHao Wan

摘要/Abstract

摘要： 【目的】研究海藻糖及海藻糖酶在B型烟粉虱寄主谱扩张及与温室粉虱的竞争适应过程中的作用。【方法】以番茄饲养的B型烟粉虱与温室粉虱转移取食嗜好（棉花、甘蓝）或非嗜好（玉米）寄主植物后，其体内海藻糖含量及海藻糖酶活性的变化和响应。【结果】改变寄主会使B型烟粉虱和温室粉虱的海藻糖含量降低，其中棉花的作用最为明显，分别比对照减少了33％和25％；将植物种类转换为B型烟粉虱嗜好、温室粉虱亦可利用的寄主棉花或B型烟粉虱嗜好而温室粉虱非嗜好的寄主甘蓝，两种粉虱海藻糖含量的变化基本一致，而在两种粉虱非嗜好寄主玉米上B型烟粉虱（112.6％）较温室粉虱（60.8％）的恢复能力强、稳定性能好。尽管改变寄主对两种粉虱海藻糖酶比活力的作用不明显，但对海藻糖酶比活力变化趋势的影响却明显不同；转换不同种类的寄主B型烟粉虱海藻糖酶比活力的动态趋势基本一致，而温室粉虱却不尽相同；在非嗜好寄主玉米上两种粉虱海藻糖酶比活力的变化动态虽相仿，但B型烟粉虱的恢复能力较温室粉虱强。【结论】海藻糖酶在B型烟粉虱寄主谱扩张及与温室粉虱的竞争适应过程中可能起重要作用。

关键词: B型烟粉虱, 温室粉虱, 海藻糖含量, 海藻糖酶比活力, 动态变化, 适应能力

Abstract: 【Objective】The contents and dynamics of trehalose and trehalase activity of Bemisia tabaci B-biotype and Trialeurodes vaporariorum were evaluated when 【Method】 Their host plant species switched from tomato (an addicted host plant species of both whitefly species, also as the control) to cotton (B. tabaci B-biotype is addicted to it and T. vaporariorum can develop), cabbage (B. tabaci B-biotype is addicted to it but T. vaporariorum cannot survival) and maize (both whitefly species cannot survival) plants.【Result】The trehalose contents of B. tabaci B-biotype and T. vaporariorum decreased when both whitefly species switched from tomato to the three tested plant species, especially to the cotton, decreased by 33% and 25%, respectively. There were no significant differences between the two whitefly species switched to cotton and cabbage plants when the dynamics of trehalose contents were compared. However, switched to non-addicted host, the maize, the recovery ability and stability of B. tabaci B-biotype (112.6%) were more powerful than those of T. vaporariorum (60.8%). The effects of plant species switching on trehalase activity of the two whitefly species were not prominent, but the dynamics of trehalase activity of both were different. The dynamics of trehalase activity of B. tabaci B-biotype were not different when switched to cotton, cabbage or maize plants; however, the differences were observed when T. vaporariorum switched to the same three plant species. The dynamics of trehalase activity of B. tabaci B-biotype and T. vaporariorum on non-addicted maize plant were not significantly different; however, the recovery ability and stability of B. tabaci B-biotype (56.0%) were greater than that of T. vaporariorum (48.4%). 【Conclusion】The present results indicated that the trehalase may be important in the enlargement of host plant species of B. tabaci B-biotype and in the competition between B. tabaci B-biotype and T. vaporariorum.

Key words: Bemisia tabaci B biotype, Trialeurodes vaprorariorum, trehalose content, trehalase activity, dynamics, adaptability

雷芳,张桂芬,万方浩,马骏. 寄主转换对B型烟粉虱和温室粉虱海藻糖含量和海藻糖酶活性的影响[J]. 中国农业科学, 2006, 39(7): 1387-1394 .

Fang Lei,GuiFen Zhang,FangHao Wan,Jun Ma. Effects of Plant Species Switching on Contents and Dynamics of Trehalose and Trehalase Activity of Bemisia tabaci B-biotype and Trialeurodes vaporariorum[J]. Scientia Agricultura Sinica, 2006, 39(7): 1387-1394 .

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