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Transcriptomic response of cowpea bruchids to N-acetylglucosamine-specific lectins

文献类型： 外文期刊

作者： Wang, Li-Hua 1 ; Chi, Yong Hun 2 ; Guo, Feng-Guang 2 ; Li-Byarlay, Hongmei 3 ; Balfe, Susan 3 ; Fang, Ji-Chao 1 ; Pitt 1 ;

作者机构： 1.Jiangsu Acad Agr Sci, Inst Plant Protect, Nanjing, Jiangsu, Peoples R China

2.Texas A&M Univ, Dept Entomol, College Stn, TX 77843 USA

3.Univ Illinois, Dept Entomol, Urbana, IL USA

关键词： carbohydrate-binding;lectin;midgut epithelium;senescence;transcriptomic response

期刊名称：Insect Science （ 影响因子：3.262； 五年影响因子：3.206 ）

ISSN： 1672-9609

年卷期： 2015 年 22 卷 1 期

页码：

收录情况： SCI

摘要： Griffonia simplicifolia lectin II (GSII) and wheat germ agglutinin (WGA) are N-acetylglucosamine-binding lectins. Previous studies demonstrated that they have anti-insect activity, a property potentially useful in pest control. To gain some insight into the insect response to dietary lectins, we performed transcriptomic analysis using the cowpea bruchid (Callosobruchus maculatus) midgut microarray platform we built. Compared to the nonnutritional cellulose treatment, dietary lectins induced more profound changes in gene expression. Ingestion of relatively high doses of lectins for 24 h resulted in alteration of gene expression involved in sugar and lipid metabolism, transport, development, defense, and stress tolerance. Metabolic genes were largely downregulated. Moreover, we observed disorganized microvilli resulting from ingestion of WGA. This morphological change is consistent with the lectin-induced changes in genes related to midgut epithelial cell repair. In addition, suboptimal nutrient conditions may serve as a stress signal to trigger senescence processes, leading to growth arrest and developmental delay.

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