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Zhong Y, Tang R, Lin L, Zhao W, Wei S, Zhang F, Uddin MK, Xie M, Chen H. RpedOBP1 plays key roles in aggregation pheromones reception of the Riptortus pedestris. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2024; 204:106073. [PMID: 39277386 DOI: 10.1016/j.pestbp.2024.106073] [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: 04/15/2024] [Revised: 07/29/2024] [Accepted: 08/03/2024] [Indexed: 09/17/2024]
Abstract
Riptortus pedestris (Hemiptera: Alydidae) is a notable soybean pest, with diapause and non-diapause individuals showing different sensitivities to aggregation pheromones. This study aimed to investigate how R. pedestris detects aggregation pheromones through electroantennogram (EAG) and behavioral experiments, transcriptome sequencing and qRT-PCR, as well as competitive fluorescence-binding assay. Results indicated that diapausing females and males of R. pedestris exhibited a heightened EAG response and were more attracted to the aggregation pheromone components compared to their non-diapause counterparts. Transcriptome sequencing and qRT-PCR analyses revealed significantly higher expression of RpedOBP1 in the antennae of diapause females and males compared to non-diapausing R. pedestris. The competitive fluorescence-binding assay demonstrated that RpedOBP1 displayed the strongest binding affinity to E2HE2H, suggesting its crucial role in recognizing the aggregation pheromone. These findings have the potential to inform the development of integrated pest management strategies utilizing behavioral approaches for bean bug control.
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Affiliation(s)
- Yongzhi Zhong
- Anhui-CABI Joint Laboratory for Agricultural Pest Control, Institute of Plant Protection and Agro-Products Safety, Anhui Academy of Agricultural Sciences, Hefei 230031, China
| | - Rui Tang
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Guangdong Public Laboratory of Wild Animal Conservation and Utilization, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou 510260, China
| | - Lulu Lin
- Anhui-CABI Joint Laboratory for Agricultural Pest Control, Institute of Plant Protection and Agro-Products Safety, Anhui Academy of Agricultural Sciences, Hefei 230031, China
| | - Wei Zhao
- Anhui-CABI Joint Laboratory for Agricultural Pest Control, Institute of Plant Protection and Agro-Products Safety, Anhui Academy of Agricultural Sciences, Hefei 230031, China
| | - Shuang Wei
- Guangzhou Customs Technology Center, Guangzhou 510632, China
| | | | - Md Kafil Uddin
- Anhui-CABI Joint Laboratory for Agricultural Pest Control, Institute of Plant Protection and Agro-Products Safety, Anhui Academy of Agricultural Sciences, Hefei 230031, China; Entomology Division, Bangladesh Agricultural Research Institute, Gazipur 1701, Bangladesh
| | - Minghui Xie
- Anhui-CABI Joint Laboratory for Agricultural Pest Control, Institute of Plant Protection and Agro-Products Safety, Anhui Academy of Agricultural Sciences, Hefei 230031, China.
| | - Haoliang Chen
- Anhui-CABI Joint Laboratory for Agricultural Pest Control, Institute of Plant Protection and Agro-Products Safety, Anhui Academy of Agricultural Sciences, Hefei 230031, China.
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Yuan W, Rao X, Zhong B, Chen M, Ali H, Lv C, Niu C. Exploring the functional profiles of odorant binding proteins crucial for sensing key odorants in the new leaves of coconut palms in Rhynchophorus ferrugineus. Int J Biol Macromol 2024; 261:129852. [PMID: 38307432 DOI: 10.1016/j.ijbiomac.2024.129852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Revised: 01/28/2024] [Accepted: 01/28/2024] [Indexed: 02/04/2024]
Abstract
The red palm weevil (RPW), Rhynchophorus ferrugineus (Curculionidae: Coleoptera) is a highly destructive global pest of coconut trees, with a preference for laying its eggs on new leaves. Females can identify where to lay eggs by using their sense of smell to detect specific odorants found in new leaves. In this study, we focused on the two odorants commonly found in new leaves by GC-MS: trans, trans-2,4-nonadienal and trans-2-nonenal. Our behavioral assays demonstrated a significant attraction of females to both of these odorants, with their electrophysiological responses being dose-dependent. Furthermore, we examined the expression patterns induced by these odorants in eleven RferOBP genes. Among them, RferOBP3 and RferOBP1768 exhibited the most significant and simultaneous upregulation. To further understand the role of these two genes, we conducted experiments with females injected with OBP-dsRNA. This resulted in a significant decrease in the expression of RferOBP3 and RferOBP1768, as well as impaired the perception of the two odorants. A fluorescence competitive binding assay also showed that both RferOBPs strongly bound to the odorants. Additionally, sequence analysis revealed that these two RferOBPs belong to the Minus-C family and possess four conserved cysteines. Molecular docking simulations showed strong interactions between these two RferOBPs and the odorant molecules. Overall, our findings highlight the crucial role of RferOBP3 and RferOBP1768 in the olfactory perception of the key odorants in coconut palm new leaves. This knowledge significantly improves our understanding of how RPW females locate sites for oviposition and lays the foundation for future research on the development of environmentally friendly pest attractants.
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Affiliation(s)
- Weiqin Yuan
- Coconut Research Institute/Tropical Oil Crops Research Institute, Chinese Academy of Tropical Agriculture Sciences, Wenchang, Hainan 571300, China; College of Plant Science & Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Xinjie Rao
- College of Plant Science & Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China; New Horizon Health Co., Ltd., Hangzhou 310051, China
| | - Baozhu Zhong
- Coconut Research Institute/Tropical Oil Crops Research Institute, Chinese Academy of Tropical Agriculture Sciences, Wenchang, Hainan 571300, China
| | - Mengran Chen
- College of Plant Protection/Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests, Ministry of Education, Hainan University, Haikou 570228, China
| | - Habib Ali
- Department of Agricultural Engineering, Khwaja Fareed University of Engineering and Information technology, Rahim Yar Khan 64200, Pakistan
| | - Chaojun Lv
- Coconut Research Institute/Tropical Oil Crops Research Institute, Chinese Academy of Tropical Agriculture Sciences, Wenchang, Hainan 571300, China.
| | - Changying Niu
- College of Plant Science & Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China.
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Zhong Y, Xie M, Di Z, Li F, Chen J, Kong X, Lin L, Su W, Xu L, Zhang F, Tang R, Chen H. PBP1 plays key roles in sex pheromone reception of the fall armyworm. Int J Biol Macromol 2022; 214:162-169. [PMID: 35709868 DOI: 10.1016/j.ijbiomac.2022.06.068] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Revised: 05/27/2022] [Accepted: 06/10/2022] [Indexed: 11/18/2022]
Abstract
Spodoptera frugiperda among the China population employs a four-component sex pheromone blend to accelerate male-female allocation and mating behavior. The underlying molecular mechanism has been incompletely elucidated. In the current study, we showed that differences existed between genders toward the four sex pheromone components, including Z9-14:AC, Z7-12:AC, Z9-12:AC, and Z11-16:AC, in terms of electrophysiological responses and behavioral valences. Male adults were significantly more sensitive to all tested compounds than female adults. Furthermore, ecological outputs may be related to four pheromone-binding proteins, namely, SfruPBP1, SfruPBP2, SfruPBP3, and SfruPBP4. They formed four distinct clades within the lepidopteran phylogeny, and male adults expressed significantly higher levels of SfruPBP1 and SfruPBP2 than female adults. We observed the highest binding affinities of SfruPBP1 toward all four sex pheromone components. SfruPBP4 had moderate binding affinities for Z7-12:AC, Z11-16:AC, and Z9-12:AC, while SfruPBP2 showed binding toward Z9-14:AC. This observation suggests that SfruPBP1 plays a key role in sex pheromone discrimination and drives sexually biased behavioral decisions toward certain pheromone components. These findings will help to develop behavioral-mediating tools as part of integrated pest management approaches for this cross-border pest.
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Affiliation(s)
- Yongzhi Zhong
- Anhui-CABI Joint Laboratory for Agricultural Pest Control, Institute of Plant Protection and Agro-products Safety, Anhui Academy of Agricultural Sciences, Hefei 230031, China
| | - Minghui Xie
- Anhui-CABI Joint Laboratory for Agricultural Pest Control, Institute of Plant Protection and Agro-products Safety, Anhui Academy of Agricultural Sciences, Hefei 230031, China
| | - Zhongjuan Di
- Institute of Plant and Environment Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| | - Fengqi Li
- Institute of Plant and Environment Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| | - Jiaqi Chen
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Guangdong Public Laboratory of Wild Animal Conservation and Utilization, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou 510260, China
| | - Xiangxin Kong
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Guangdong Public Laboratory of Wild Animal Conservation and Utilization, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou 510260, China
| | - Lulu Lin
- Anhui-CABI Joint Laboratory for Agricultural Pest Control, Institute of Plant Protection and Agro-products Safety, Anhui Academy of Agricultural Sciences, Hefei 230031, China
| | - Weihua Su
- Anhui-CABI Joint Laboratory for Agricultural Pest Control, Institute of Plant Protection and Agro-products Safety, Anhui Academy of Agricultural Sciences, Hefei 230031, China
| | - Lina Xu
- Anhui-CABI Joint Laboratory for Agricultural Pest Control, Institute of Plant Protection and Agro-products Safety, Anhui Academy of Agricultural Sciences, Hefei 230031, China
| | - Feng Zhang
- MARA-CABI Joint Laboratory for Bio-safety, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China; CABI East & South-East Asia, Beijing 100081, China
| | - Rui Tang
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Guangdong Public Laboratory of Wild Animal Conservation and Utilization, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou 510260, China.
| | - Haoliang Chen
- Anhui-CABI Joint Laboratory for Agricultural Pest Control, Institute of Plant Protection and Agro-products Safety, Anhui Academy of Agricultural Sciences, Hefei 230031, China.
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