The relationship between odorant binding proteins and host locatingbehavior in Sogatella furcifera (Hemiptera: Delphacidae)
Author of the article:JIANG Yan-Dong** LIANG Qing-Mei BAI Yue-Liang ZHOU Wen-Wu LIU Su WANG Guang-Hua*** ZHU Zeng-Ro
Author's Workplace：State Key Laboratory of Rice Biology, Key Laboratory of Agricultural Entomology, Ministry of Agriculture, Institute of Insect Sciences, Zhejiang University, Hangzhou 310058, China
Key Words：the white-backed planthopper, olfactory, host locating behavior, RNAi
Abstract：
[Objectives] To provide a basis for effective, RNA interference (RNAi) -based, pest control, the biological functions of the odorant binding proteins of Sogatella furcifera (Hemiptera: Delphacidae) were investigated and the genes involved in host-locating behavior were identified. [Methods] SfOBP11 was knocked down by RNAi using micro-injection and its role in the host-locating behavior of S. furcifera was investigated in an H-tube experiment. Real-time qPCR was used to determine the relative expression levels of OBP genes after RNAi treatment. [Results] The relative expression of SfOBP11 decreased significantly 24 h after RNAi treatment but mortality remained the same. RNAi treatment significantly reduced the ability of nymphs to find host plants. [Conclusion] SfOBP11 could play an important role in the detection of rice volatiles by S. furcifera.