原产地和入侵地紫茎泽兰对泽兰实蝇的选择性、卵巢蛋白质含量与解毒酶活性的影响  

Effect of native and invasive populations of Ageratina adenophora on the selectivity, ovarian protein and detoxification enzymes of Procecidochares utilis

作　　者：刁跃珲 高鑫[1] 孙圆圆 赵云鹏 徐刚 杨国庆[1] DIAO Yuehui;GAO Xin;SUN Yuanyuan;ZHAO Yunpeng;XU Gang;YANG Guoqing(Horticulture and Plant Protection College,Yangzhou University,Yangzhou,Jiangsu 225009,China)

机构地区：[1]扬州大学园艺与植物保护学院

出　　处：《生物安全学报》2019年第4期243-248,共6页Journal of biosafety

基　　金：国家自然科学基金(31772229);江苏省大学生实践创新训练计划(201811117066Y)

摘　　要：【目的】紫茎泽兰是我国危害严重的恶性入侵杂草。比较专一性天敌泽兰实蝇对该杂草入侵前后植株的适应性,是揭示外来植物入侵后适应性机制的重要科学问题之一。【方法】比较泽兰实蝇对原产地和入侵地紫茎泽兰植株的寄主选择性,并测定寄生于2类植株的上泽兰实蝇卵巢蛋白质含量及乙酰胆碱酯酶、羧酸酯酶、谷胱甘肽S-转移酶活性。【结果】泽兰实蝇对原产地和入侵地紫茎泽兰的选择无显著性差异;寄生在紫茎泽兰入侵地植株上的卵巢蛋白质含量较原产地植株上更高。解毒酶活力比较表明,入侵地紫茎泽兰上泽兰实蝇的羧酸酯酶活性低于原产地上的,但谷胱甘肽S-转移酶(雌虫)活性比较则相反,乙酰胆碱酯酶活性比较均无显著性差异。【结论】紫茎泽兰入侵后,专一性天敌泽兰实蝇的适应性有所下降,丰富了外来植物入侵机制中天敌逃逸假说的内涵。【Aim】Ageratina adenophora is a serious invasive weed in China.Adaptation of the specific natural enemy,the tephritid fly Procecidochares utilis to native vs.invasive host plant populations is one of the important points in exploring the invasive mechanisms for this plant.【Method】In this study,we determined the selectivity of P.utilis between native and invasive populations of A.adenophora,and the ovarian protein content and acetylcholinesterase,carboxylesterase,glutathione S-transferase activities of P.utilis reared on native vs.invasive populations of A.adenophora.【Result】There was no significant difference in host selection by P.utilis between the two kinds of host population.The ovarian protein content of P.utilis reared on invasive populations of A.adenophora was higher than when reared on natives.The carboxylesterase activities of P.utilis reared on invasive host plants was lower than on native ones,but the glutathione S-transferase activity was higher in females.There was no significant difference in comparisons of the acetylcholinesterase activity.【Conclusion】The adaptation of A.adenophora to the specific natural enemy P.utilis decreased to some extent,which confirms the natural Enemy Escape Hypothesis for the invasion mechanism of invasive plants.

关 键 词：泽兰实蝇 紫茎泽兰 选择性 卵巢蛋白质 

分 类 号：R28[医药卫生—中药学]