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Plants impact cellular immunity of caterpillars to an entomovirus

文献类型： 外文期刊

作者： Wang, Jin-Yan 1 ; Zhang, Hao 1 ; Siemann, Evan 2 ; Fan, Neng-Neng 1 ; Ji, Xiang-Yun 1 ; Chen, Yi-Juan 1 ; Jiang, Jie-X 1 ;

作者机构： 1.Shanghai Acad Agr Sci, Shanghai Key Lab Protected Hort Technol, Shanghai Engn Res Ctr Low Carbon Agr, Ecoenvironm Protect Inst, Shanghai 201403, Peoples R China

2.Rice Univ, Dept Biosci, Houston, TX 77005 USA

关键词： caspase genes; cell apoptosis; granular hemocytes; host plant; nucleopolyhedrovirus; plasmatocytes

期刊名称：PEST MANAGEMENT SCIENCE （ 影响因子：4.845； 五年影响因子：4.674 ）

ISSN： 1526-498X

年卷期： 2021 年 77 卷 5 期

页码：

收录情况： SCI

摘要： BACKGROUND Tri-trophic interactions among plants, insect herbivores and entomopathogens are one of the hot topics in ecology. Although plants have been shown to impact the interactions between herbivores and entomopathogens, it is still unclear how plants affect the cellular immunity of herbivores to entomopathogens. RESULTS The number of hemocytes and the proportion of two main cell types (granular hemocytes and plasmatocytes), plasmatocyte-spreading rate, apoptosis rate, two Spodoptera exigua caspase (SeCasp-1, SeCasp-5) activities and gene expressions were all higher and the activities and gene expression of S. exigua inhibitor of apoptosis protein (SeIAP) were lower in nucleopolyhedrovirus (NPV)-infected caterpillars fed Ipomoea aquatica than those fed other plants or artificial diet. Scanning electron microscopy images were consistent with molecular patterns of immune responses. CONCLUSION This study suggests that host plants affect the immune responses of herbivores to entomopathogens by manipulating the composition, morphology and apoptosis of herbivore hemocytes, which sheds light on the mechanisms that allow host plants to influence multi-trophic interactions.

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