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Article Abstract

The brown planthopper, , is a difficult-to-control insect pest affecting rice yields in Asia. As a structural component of the inter-alpha-trypsin inhibitor (ITI), the inter-alpha-trypsin inhibitor heavy chain (ITIH) has been reported to be involved in various inflammatory or malignant disorders, ovarian development, and ovulation. To reveal the function of ITIH4 in , the gene encoding ITIH4 () was cloned and characterized. ITIH4 contains a signal peptide, a vault protein inter-alpha-trypsin domain, and a von Willebrand factor type A domain. qPCR analysis showed that was expressed at all developmental stages and in all tissues (fat body, ovary, and gut), with the highest expression in the fat body. Double stranded (ds) injection clearly led to an RNAi-mediated inhibition of the expression of and resulted in reduced survival, delayed ovarian development, and reduced egg production and egg hatching. These results indicate that plays an important role in the development and reproduction of .

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8951764PMC
http://dx.doi.org/10.3390/insects13030303DOI Listing

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