Article (Scientific journals)
Functional analysis of odorant-binding proteins for the parasitic host location to implicate convergent evolution between the grain aphid and its parasitoid Aphidius gifuensis.
Jiang, Xin; Jiang, Jun; Yu, Miaomiao et al.
2022In International Journal of Biological Macromolecules, 226, p. 510 - 524
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Keywords :
(E)-β-farnesene (EBF); Aphidifus gifuensis; Convergent evolution; Odorant-binding protein (OBPs); Olfactory plasticity; Molecular Biology; General Medicine; Biochemistry; Structural Biology
Abstract :
[en] (E)-β-farnesene (EBF) is a typical and ecologically important infochemical in tri-trophic level interactions among plant-aphid-natural enemies. However, the molecular mechanisms by which parasitoids recognize and utilize EBF are unclear. In this study, we functionally characterized 8 AgifOBPs in Aphidifus gifuensis, one dominant endo-parasitoid of wheat aphid as well as peach aphid in China. Among which, AgifOBP6 was the only OBP upregulated by various doses of EBF, and it showed a strong binding affinity to EBF in vitro. The lack of homology between AgifOBP6 and EBF-binding proteins from aphids or from other aphid natural enemies supported that this was a convergent evolution among insects from different orders driven by EBF. Molecular docking of AgifOBP6 with EBF revealed key interacting residues and hydrophobic forces as the main forces. AgifOBP6 is widely expressed among various antennal sensilla. Furthermore, two bioassays indicated that trace EBF may promote the biological control efficiency of A. gifuensis, especially on winged aphids. In summary, this study reveals an OBP (AgifOBP6) that may play a leading role in aphid alarm pheromone detection by parasitoids and offers a new perspective on aphid biological control by using EBF. These results will improve our understanding of tri-trophic level interactions among plant-aphid-natural enemies.
Disciplines :
Entomology & pest control
Author, co-author :
Jiang, Xin ;  Université de Liège - ULiège > TERRA Research Centre
Jiang, Jun;  State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, PR China
Yu, Miaomiao;  State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, PR China
Zhang, Siyu;  State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, PR China
Qin, Yaoguo;  Department of Entomology, MOA Key Laboratory for Monitoring and Environment-Friendly Control of Crop Pests, College of Plant Protection, China Agricultural University, Beijing 100193, PR China
Xu, Yun;  Institute of Agricultural Environment & Resources, Yunnan Academy of Agricultural Science, Yunnan, Kunming 650205, PR China
Francis, Frédéric  ;  Université de Liège - ULiège > TERRA Research Centre > Gestion durable des bio-agresseurs
Fan, Jia;  State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, PR China. Electronic address: jfan@ippcaas.cn
Chen, Julian;  State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, PR China. Electronic address: chenjulian@caas.cn
Language :
English
Title :
Functional analysis of odorant-binding proteins for the parasitic host location to implicate convergent evolution between the grain aphid and its parasitoid Aphidius gifuensis.
Publication date :
09 December 2022
Journal title :
International Journal of Biological Macromolecules
ISSN :
0141-8130
eISSN :
1879-0003
Publisher :
Elsevier BV, Netherlands
Volume :
226
Pages :
510 - 524
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
National Key Research and Development Program of China
Agricultural Science and Technology Innovation Program
Funders :
NSCF - National Natural Science Foundation of China [CN]
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since 16 December 2022

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