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chitin synthase 1 and five cuticle protein genes are involved in serosal cuticle formation during early embryogenesis to enhance eggshells in Nilaparvata lugens

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Insect Science 2022年第2期29卷 363-378页

作者： Jia-Bao Lu Jian-Sheng Guo Xuan Chen Chen Cheng Xu-Mei Luo Xiao-Ya Zhang Bernard Moussian Jian-Ping Chen Jun-Min Li Chuan-Xi Zhang State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang ProvinceInstitute of Plant VirologyNingbo UniversityNingboZhejiang ProvinceChina Institute of Insect Science Zhejiang UniversityHangzhouChina School of Medicine Zhejiang UniversityHangzhouChina UniversitéCôte d'Azur CNRSInsermInstitute of Biology ValroseNiceFrance

Many holo-and hemimetabolous insects enhance their eggshells during embryogenesis by forming a serosal cuticle(SC).To date,scholarly understanding of the SC composition and SC-related gene functions has been limited,especially for hemimetabolous *** this study,we initially performed transmission electron microscopic(TEM)observation and chitin staining of the SC in Nilaparvata lugens,a hemimetabolous rice pest known as the brown planthopper(BPH).We confirmed that the SC was a chitin-rich lamellar structure deposited gradually during the early *** RNA interference(RNAi)against Nilaparvata lugens chitin synthase 1(NlCHS1)in newly emerged and matured females resulted in decreases of egg hatchability by 100%and 76%,*** analyses revealed loss of the lamellar structure of the SC in dsNlCHS1-treated *** to temporal expression profiles,five cuticle protein coding genes,NlugCpr1/2/3/8/90,were specifically or highly expressed during the SC formation period,and NlugCpr1/2/3/90 were further detected in 72 h eggshells extract by ultra-performance liquid chromatography-tandem mass spectrometry/mass ***2/3/90 were likely three SC-specific cuticle *** observations of the SC following parental RNAi against NlugCpr1/2/3/8/90 demonstrated that NlugCpr3/8/90 were essential for SC *** study provided an understanding of the SC formation process and SC-related cuticle proteins in BPHs,which offer potential targets for pest control in the egg stage as well.

关键词： chitin synthase 1 cuticle protein eggshell embryogenesis Nilaparvata lugens serosal cuticle

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