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Hu J, Zhang Y, Tan L, Wang X, Liu W, Wang G, Zheng X. Functional characterization of sex pheromone receptors PflaOR29 and PflaOR44 involved in the chemoreception of a diurnal moth, Phauda flammans (Walker) (Lepidoptera: Phaudidae). PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2024; 203:105998. [PMID: 39084772 DOI: 10.1016/j.pestbp.2024.105998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Revised: 06/05/2024] [Accepted: 06/19/2024] [Indexed: 08/02/2024]
Abstract
Recognition of sex pheromones released by heterosexual moths via sex pheromone receptors is key for establishing mating connections in moths. The day-flying moth Phauda flammans is an oligophagous pest in southern cities of China and Southeast Asian countries. Our previous study reported that male P. flammans can be attracted to two sex pheromone compounds [Z-9-hexadecenal and (Z, Z, Z)-9,12,15-octadecadienal] released by females in the field; however, the mechanism of olfactory recognition is not clear. In this study, two sex pheromone receptor genes (PflaOR29 and PflaOR44) were cloned. Among the different tissues, both PflaOR29 and PflaOR44 were highly expressed in the antennae of mated male adults. At different developmental stages, the expression levels of PflaOR29 and PflaOR44 were significantly greater in mated male adults than other stages. The fluorescence signals of PflaOR29 and PflaOR44 were mostly distributed on the dorsal side of the antennae, with a large number of trichoid sensilla. The results of the gene function of PflaOR29 and PflaOR44 based on a Drosophila empty neuron heterologous expression system indicated that PflaOR29 strongly responded to (Z, Z, Z)-9,12,15-octadecadienal but not to Z-9-hexadecenal, whereas PflaOR44 did not respond to the two sex pheromones. Our findings clarify the sex pheromone receptor gene corresponding to (Z, Z, Z)-9,12,15-octadecatrienal. These results provide essential information for analyzing the mechanism of sexual communication in diurnal moths and for identifying target genes for the development of efficient attractants.
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Affiliation(s)
- Jin Hu
- Guangxi Key Laboratory of Agric-Environment and Agric-Products Safety, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning 530004, China
| | - Yan Zhang
- Institute of Agricultural Genome, Chinese Academy of Agricultural Sciences (Shenzhen), Shenzhen Branch of Lingnan Modern Agricultural Science and Technology Laboratory, Key Laboratory of Agricultural Gene Data Analysis, Ministry of Agriculture and Rural Affairs, Shenzhen 518120, China; Northeast Forestry University, Key Laboratory of Sustainable Management of Forest Ecosystem, Ministry of Education, Harbin 150040, China
| | - Liusu Tan
- Guangxi Key Laboratory of Agric-Environment and Agric-Products Safety, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning 530004, China
| | - Xiaoyun Wang
- Guangxi Key Laboratory of Agric-Environment and Agric-Products Safety, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning 530004, China
| | - Wei Liu
- Institute of Agricultural Genome, Chinese Academy of Agricultural Sciences (Shenzhen), Shenzhen Branch of Lingnan Modern Agricultural Science and Technology Laboratory, Key Laboratory of Agricultural Gene Data Analysis, Ministry of Agriculture and Rural Affairs, Shenzhen 518120, China
| | - Guirong Wang
- Institute of Agricultural Genome, Chinese Academy of Agricultural Sciences (Shenzhen), Shenzhen Branch of Lingnan Modern Agricultural Science and Technology Laboratory, Key Laboratory of Agricultural Gene Data Analysis, Ministry of Agriculture and Rural Affairs, Shenzhen 518120, China
| | - Xialin Zheng
- Guangxi Key Laboratory of Agric-Environment and Agric-Products Safety, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning 530004, China.
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Li XF, Qie XT, Mo BT, Wang CF, Xing ZH, Zhao JY, Wang CZ, Hao C, Ma L, Yan XZ. Functional types of long trichoid sensilla responding to sex pheromone components in Plutella xylostella. INSECT SCIENCE 2024. [PMID: 38616579 DOI: 10.1111/1744-7917.13367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 02/17/2024] [Accepted: 03/11/2024] [Indexed: 04/16/2024]
Abstract
Sex pheromones, which consist of multiple components in specific ratios promote intraspecific sexual communications of insects. Plutella xylostella (L.) is a worldwide pest of cruciferous vegetables, the mating behavior of which is highly dependent on its olfactory system. Long trichoid sensilla on male antennae are the main olfactory sensilla that can sense sex pheromones. However, the underlying mechanisms remain unclear. In this study, 3 sex pheromone components from sex pheromone gland secretions of P. xylostella female adults were identified as Z11-16:Ald, Z11-16:Ac, and Z11-16:OH in a ratio of 9.4 : 100 : 17 using gas chromatography - mass spectrometry and gas chromatography with electroantennographic detection. Electrophysiological responses of 581 and 385 long trichoid sensilla of male adults and female adults, respectively, to the 3 components were measured by single sensillum recording. Hierarchical clustering analysis showed that the long trichoid sensilla were of 6 different types. In the male antennae, 52.32%, 5.51%, and 1.89% of the sensilla responded to Z11-16:Ald, Z11-16:Ac, and Z11-16:OH, which are named as A type, B type, and C type sensilla, respectively; 2.93% named as D type sensilla responded to both Z11-16:Ald and Z11-16:Ac, and 0.34% named as E type sensilla were sensitive to both Z11-16:Ald and Z11-16:OH. In the female antennae, only 7.53% of long trichoid sensilla responded to the sex pheromone components, A type sensilla were 3.64%, B type and C type sensilla were both 0.52%, D type sensilla were 1.30%, and 1.56% of the sensilla responded to all 3 components, which were named as F type sensilla. The responding long trichoid sensilla were located from the base to the terminal of the male antennae and from the base to the middle of the female antennae. The pheromone mixture (Z11-16:Ald : Z11-16:Ac : Z11-16:OH = 9.4 : 100 : 17) had a weakly repellent effect on female adults of P. xylostella. Our results lay the foundation for further studies on sex pheromone communications in P. xylostella.
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Affiliation(s)
- Xiao-Fei Li
- College of Plant Protection, Shanxi Agricultural University, Taigu, Shanxi Province, China
| | - Xing-Tao Qie
- College of Plant Protection, Shanxi Agricultural University, Taigu, Shanxi Province, China
| | - Bao-Tong Mo
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing, China
| | - Cai-Feng Wang
- College of Plant Protection, Shanxi Agricultural University, Taigu, Shanxi Province, China
| | - Zeng-Hua Xing
- College of Plant Protection, Shanxi Agricultural University, Taigu, Shanxi Province, China
| | - Jin-Yu Zhao
- College of Plant Protection, Shanxi Agricultural University, Taigu, Shanxi Province, China
| | - Chen-Zhu Wang
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing, China
| | - Chi Hao
- College of Plant Protection, Shanxi Agricultural University, Taigu, Shanxi Province, China
| | - Li Ma
- College of Plant Protection, Shanxi Agricultural University, Taigu, Shanxi Province, China
| | - Xi-Zhong Yan
- College of Plant Protection, Shanxi Agricultural University, Taigu, Shanxi Province, China
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Zhang YY, Bai TF, Guo JM, Wei ZQ, Liu SR, He Y, Ye JJ, Yan Q, Zhang J, Dong SL. Molecular mechanism of sex pheromone perception in male Mythimna loreyi revealed by in vitro system. PEST MANAGEMENT SCIENCE 2024; 80:744-755. [PMID: 37779104 DOI: 10.1002/ps.7806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 09/06/2023] [Accepted: 10/02/2023] [Indexed: 10/03/2023]
Abstract
BACKGROUND Mythimna loreyi is an important agricultural pest with a sensitive sex pheromone communication system. To clarify the pheromone binding proteins (PBPs) and pheromone receptors (PRs) involved in sex pheromone perception is important for both understanding the molecular olfactory mechanism and developing a new pest control strategy in M. loreyi. RESULTS First, the electroantennogram (EAG) assay showed that male M. loreyi displayed the highest response to the major sex pheromone component Z9-14:Ac, and higher responses to two minor components, Z7-12:Ac and Z11-16:Ac. Second, the fluorescence competition binding assay showed that PBP1 bound all three pheromones and other tested compounds with high or moderate affinity, while PBP2 and PBP3 each bound only one pheromone component and few other compounds. Third, functional study using the Xenopus oocyte system demonstrated that, of the six candidate PRs, PR2 was weakly sensitive to the major pheromone Z9-14:Ac, but was strongly sensitive to pheromone analog Z9-14:OH; PR3 was strongly and specifically sensitive to a minor component Z7-12:Ac; PR4 and OR33 were both weakly sensitive to another minor component, Z11-16:Ac. Finally, phylogenetic relationship and ligand profiles of PRs were compared among six species from two closely related genera Mythimna and Spodoptera, suggesting functional shifts of M. loreyi PRs toward Spodoptera PRs. CONCLUSION Functional differentiations were revealed among three PBPs and six PRs in sex pheromone perception, laying an important basis for understanding the molecular mechanism of sex pheromone perception and for developing new control strategies in M. loreyi. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Yun-Ying Zhang
- Key Laboratory of Integrated Management of Crop Disease and Pests, Ministry of Education / College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Teng-Fei Bai
- Key Laboratory of Integrated Management of Crop Disease and Pests, Ministry of Education / College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Jin-Meng Guo
- Key Laboratory of Integrated Management of Crop Disease and Pests, Ministry of Education / College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Zhi-Qiang Wei
- Key Laboratory of Integrated Management of Crop Disease and Pests, Ministry of Education / College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Si-Ruo Liu
- Key Laboratory of Integrated Management of Crop Disease and Pests, Ministry of Education / College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Yu He
- Key Laboratory of Integrated Management of Crop Disease and Pests, Ministry of Education / College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Jing-Jing Ye
- Key Laboratory of Integrated Management of Crop Disease and Pests, Ministry of Education / College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Qi Yan
- Key Laboratory of Integrated Management of Crop Disease and Pests, Ministry of Education / College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Jin Zhang
- Key Laboratory of Integrated Management of Crop Disease and Pests, Ministry of Education / College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Shuang-Lin Dong
- Key Laboratory of Integrated Management of Crop Disease and Pests, Ministry of Education / College of Plant Protection, Nanjing Agricultural University, Nanjing, China
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