Reduced activity of juvenile hormone esterase in microsporidia-infected Lymantria dispar larvae

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• 作者：Julia Karlhofer^a ; Christa Schafellner^a ; Gernot Hoch^a ; ^b ; ^{gernot.hoch@bfw.gv.at}
• 关键词：Juvenile hormone esterase ; Vairimorpha disparis ; Larval development ; Fat body ; Host&ndash ; pathogen interaction
• 刊名：Journal of Invertebrate Pathology
• 出版年：2012
• 期刊代码：120_00222011
• 类别：abs
• 出版时间：May, 2012
• 卷：110
• 期：1
• 页码：126-128
• 文件大小：227 K

摘要

Infection of the fat body of Lymantria dispar (Lep.: Lymantriinae) larvae with the microsporidium Vairimorpha disparis has severe effects on juvenile hormone (JH) metabolism of the host. Beginning 8 days postinfection, activity of the JH degrading enzyme JH-esterase was significantly lower in the hemolymph of infected than uninfected larvae. Activity remained low as microsporidiosis progressed. JH titers were slightly elevated in infected larvae; the difference was not significant in most cases. This disturbance of JH metabolism may be due to generally impaired fat body functions and high demand for resources by the developing pathogen.