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Alternaria toxin-induced resistance in rose plants against rose aphid(Macrosiphum rosivorum): effect of tenuazonic acid 被引量:2
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作者 Fa-zhong YANG Bin YANG +1 位作者 Bei-bei LI Chun XIAO 《Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)》 SCIE CAS CSCD 2015年第4期264-274,共11页
Many different types of toxins are produced by the fungus, Alternaria alternata (Fr.) Keissler. Little is known, however, regarding the influence of these toxins on insects. In this study, we investigated the toxin-... Many different types of toxins are produced by the fungus, Alternaria alternata (Fr.) Keissler. Little is known, however, regarding the influence of these toxins on insects. In this study, we investigated the toxin-induced inhibitory effects of the toxin produced by A. alternata on the rose aphid, Macrosiphum rosivorum, when the toxin was applied to leaves of the rose, Rosa chinensis. The results demonstrated that the purified crude toxin was non-harmful to rose plants and rose aphids, but had an intensive inhibitory effect on the multiplication of aphids. The inhibitory index against rose aphids reached 87.99% when rose plants were sprayed with the toxin solution at a low concentration. Further results from bioassays with aphids and high performance liquid chromatography (HPLC) analyses demon- strated that tenuazonic acid (TEA) was one of the most important resistance-related active components in the crude toxin. The content of TeA was 0.1199% in the crude toxin under the HPLC method. Similar to the crude toxin, the inhibitory index of pure TeA reached 83.60% 15 d after the rose plants were sprayed with pure TeA solution at the lower concentration of 0.060 IJg/ml, while the contents of residual TeA on the surface and in the inner portion of the rose plants were only 0.04 and 0.00 ng/g fresh weight of TeA-treated rose twigs, respectively, 7 d after the treatment. Our results show that TeA, an active component in the A. alternata toxin, can induce the indirect plant-mediated re- sponses in rose plants to intensively enhance the plant's resistances against rose aphids, and the results are very helpful to understand the plant-mediated interaction between fungi and insects on their shared host plants. 展开更多
关键词 TOXIN Induced resistance Fungus-plant-insect system Plant-mediated interaction Tenuazonic acid Alternaria altemata macrosiphum rosivorum
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蜡蚧轮枝菌对月季长管蚜的毒力测定 被引量:3
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作者 孔琼 袁盛勇 +3 位作者 张宏瑞 王传铭 李正跃 李河 《植物保护》 CAS CSCD 北大核心 2009年第3期161-162,共2页
研究结果表明蜡蚧轮枝菌对月季长管蚜有较强的致病性,孢子浓度2.0×105个/mL时可造成大量月季长管蚜感染死亡,其LT50=(6.62±0.14)d;而高浓度2.0×108个/mL对月季长管蚜感染致死的LT50=(4.69±0.16)d,第8天的死亡率达93... 研究结果表明蜡蚧轮枝菌对月季长管蚜有较强的致病性,孢子浓度2.0×105个/mL时可造成大量月季长管蚜感染死亡,其LT50=(6.62±0.14)d;而高浓度2.0×108个/mL对月季长管蚜感染致死的LT50=(4.69±0.16)d,第8天的死亡率达93.6%,致死中时随浓度增加而缩短。第5天的致死中浓度为(1.72±0.18)×107个/mL,第8天为(1.53±0.15)×104个/mL,致死中浓度随时间增加而减小。 展开更多
关键词 蜡蚧轮枝菌 月季长管蚜 致死中浓度 致死中时 毒力
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非寄主植物对月季长管蚜嗅觉行为的影响 被引量:4
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作者 赵宁 冯丹 杨斌 《贵州农业科学》 CAS 北大核心 2012年第4期110-112,共3页
为寻求新的植物源引诱剂和驱避剂,采用"Y"型嗅觉仪测试方法,研究了非寄主植物(韭菜和孔雀草)对月季长管蚜嗅觉行为的影响。结果表明:月季与非寄主植物叶片混合后对月季长管蚜的引诱率均明显低于未与非寄主叶片混合的月季叶片... 为寻求新的植物源引诱剂和驱避剂,采用"Y"型嗅觉仪测试方法,研究了非寄主植物(韭菜和孔雀草)对月季长管蚜嗅觉行为的影响。结果表明:月季与非寄主植物叶片混合后对月季长管蚜的引诱率均明显低于未与非寄主叶片混合的月季叶片,月季叶片∶孔雀草叶片以1∶3的比例混合后对月季长管蚜驱避效果最好,引诱率仅为20%,比月季叶片低33%。月季叶片∶韭菜叶片以1∶3的比例混合后对月季长管蚜引诱率为26%,比月季叶片低28%。 展开更多
关键词 非寄主植物 孔雀草 韭菜 月季长管蚜 嗅觉行为
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5种外来入侵植物的茎叶提取物对月季长管蚜的触杀效果实验 被引量:2
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作者 和玉华 牛芸 +1 位作者 张大才 孟梦 《西部林业科学》 CAS 北大核心 2014年第2期121-124,共4页
采用浸提法,用95%乙醇为溶剂得到紫茎泽兰、薇甘菊、三叶鬼针草、肿柄菊、酢浆草5种外来入侵植物的茎叶提取物。将植物提取物稀释成1、5、10倍液,在室内用微量点滴法,测定其于24h、48h、72h内对月季长管蚜的触杀效果。结果表明,紫... 采用浸提法,用95%乙醇为溶剂得到紫茎泽兰、薇甘菊、三叶鬼针草、肿柄菊、酢浆草5种外来入侵植物的茎叶提取物。将植物提取物稀释成1、5、10倍液,在室内用微量点滴法,测定其于24h、48h、72h内对月季长管蚜的触杀效果。结果表明,紫茎泽兰和薇甘菊对月季长管蚜的触杀效果明显高于三叶鬼针草、肿柄菊和酢浆草;5种植物提取物的触杀效果在不同浓度梯度上都无显著差异;肿柄菊植物提取物对月季长管蚜的触杀效果在时间上有极显著差异,其他4种的触杀效果在时间上呈显著差异,都在0~24h内触杀效果最好。 展开更多
关键词 月季长管蚜 外来入侵植物 触杀 微量点滴法 植物提取物
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附子浸渍液对花卉蚜虫的毒力测定及药效试验 被引量:2
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作者 白海燕 马建列 陈毅仁 《中国农学通报》 CSCD 2006年第3期323-325,共3页
室内毒力测定结果表明,附子浸渍液对观赏园艺植物花卉上常见的桃蚜和月季长管蚜具有较高的毒性,LC50为原液稀释14.99倍和15.07倍。室内药效试验表明,稀释10倍的附子浸渍液对桃蚜和月季长管蚜药后48h校正虫口减退率分别达到85.56%和89.9... 室内毒力测定结果表明,附子浸渍液对观赏园艺植物花卉上常见的桃蚜和月季长管蚜具有较高的毒性,LC50为原液稀释14.99倍和15.07倍。室内药效试验表明,稀释10倍的附子浸渍液对桃蚜和月季长管蚜药后48h校正虫口减退率分别达到85.56%和89.94%,稀释15倍的附子浸渍液对桃蚜和月季长管蚜药后48h校正虫口减退率分别达到79.97%和81.08%。经DMRT于5%水平检验与田间常用化学药剂40%氧乐果乳油1500倍液和45%马拉硫磷乳油1000倍液均无显著差异。 展开更多
关键词 附子浸渍液 桃蚜 月季长管蚜 毒力测定 药效试验
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Alternaria toxin-induced resistance against rose aphids and olfactory response of aphids to toxin-induced volatiles of rose plants 被引量:3
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作者 Fa-zhong YANG Li LI Bin YANG 《Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)》 SCIE CAS CSCD 2012年第2期126-135,共10页
The search for active toxins for managing weeds or plant diseases is believed to be a promising avenue of investigation. However, the effects of Alternaria toxins on insects have just begun to be investigated. Bioacti... The search for active toxins for managing weeds or plant diseases is believed to be a promising avenue of investigation. However, the effects of Alternaria toxins on insects have just begun to be investigated. Bioactivities of toxins from four strains of Altemaria alternata on Rosa chinensis and rose aphid Macrosiphum rosivorum were tested in the present study. At a concentration of 50.0 pg/ml, the crude extract (toxin) of strain 7484 was found not to be harmful to rose plants with excised leaf-puncture method (P≥0.079), and rose plants showed enhanced resistance to rose aphids when this Altemaria toxin was sprayed on the plants (P≤0.001). However, this toxin caused no detrimental effects on aphids in insecticidal bioassay at a concentration of 10.0 to 160.0 μg/ml (P≥0.096). Therefore, the Alternaria toxin had significantly induced the resistance of rose plants against rose aphids, demonstrating that the resistance mechanism triggered by the Altemaria toxin in the rose plant may also be used by the plant to defend itself against insects. Further bioassays aimed to discover the olfactory responses of aphids to the toxin-induced volatiles of host plants. The aphids were significantly more attracted to both volatiles emitted and collected from control rose plants than to both volatiles emitted and collected from the toxin-treated rose plants (P≤0.014). This result showed that the toxin-induced resistance related to the volatile changes of host plants. 展开更多
关键词 Alternaria altemata macrosiphum rosivorum Rosa chinensis TOXIN Plant resistance Olfactory response Volatile Headspace collection
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