Cellular immune responses of the yellow peach moth, Conogethes punctiferalis (Lepidoptera: Crambidae), to the entomopathogenic fungus, Beauveria bassiana (Hypocreales: Cordycipitaceae)
文献类型： 外文期刊
作者： Li, Shaohua 1 ; Liu, Fanghua 1 ; Kang, Zhiwei 1 ; Li, Xiangdong 1 ; Lu, Yang 3 ; Li, Qiyun 3 ; Pang, Yunshun 1 ; Zheng, Fangqiang 1 ; Yin, Xiangchu 1 ;
作者机构： 1.Shandong Agr Univ, Coll Plant Protect, Tai An 271018, Peoples R China
2.Hebei Univ, Coll Life Sci, Baoding 071002, Peoples R China
3.Jilin Acad Agr Sci, Inst Plant Protect, Changchun 130033, Peoples R China
关键词： Beauveria bassiana; Conogethes punctiferalis; Encapsulation; Hemocyte; Nodulation; Phagocytosis
期刊名称：JOURNAL OF INVERTEBRATE PATHOLOGY （ 影响因子：2.795； 五年影响因子：2.802 ）
ISSN： 0022-2011
年卷期： 2022 年 194 卷
页码：
收录情况： SCI
摘要： The yellow peach moth (YPM), Conogethes punctiferalis , is a destructive insect pest of maize in eastern China and adapts to diverse environments, especially against pathogens. In insects, innate immunity comprising both hu-moral and cellular defense responses, is the primary defense against invading microbial pathogens. In this study, we identified five types of circulating hemocytes from the hemolymph of YPM larvae and analyzed their al-terations and functions in immune responses to the infection of Beauveria bassiana , an entomopathogenic fungus infesting many lepidopteran species. The identified hemocytes included prohemocytes, plasmatocytes, gran-ulocytes, spherulocytes and oenocytoids. Significant decreases of total and differential hemocyte counts were recorded over time in larvae, after they were injected with B. bassiana conidia. Additionally, hemocyte-mediated phagocytosis and nodulation were initiated in the hemolymph of larvae from the B. bassiana conidia challenge. The introduction of DEAE-Sepharose Fast Flow beads stained with Congo red also induced a strong encapsulation response in the larval hemolymph. Our observations unravel the occurrence of phagocytosis, nodulation and encapsulation in the hemocoel of YPM larvae to fight against the fungal infection, and offer the first insight into the YPM immune system.
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