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Saberi E, Mondal M, Paredes-Montero JR, Nawaz K, Brown JK, Qureshi JA. Optimal dsRNA Concentration for RNA Interference in Asian Citrus Psyllid. INSECTS 2024; 15:58. [PMID: 38249064 PMCID: PMC10816725 DOI: 10.3390/insects15010058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 01/07/2024] [Accepted: 01/10/2024] [Indexed: 01/23/2024]
Abstract
The Asian citrus psyllid (ACP) is a citrus pest and insect vector of "Candidatus Liberibacter asiaticus", the causal agent of citrus greening disease. Double-stranded RNA (dsRNA) biopesticides that trigger RNA interference (RNAi) offer an alternative to traditional insecticides. Standardized laboratory screening of dsRNA requires establishing the minimal effective concentration(s) that result in effective RNAi "penetrance" and trigger RNAi, resulting in one or more measurable phenotypes, herein, significant gene knockdown and the potential for mortality. In this study, knockdown was evaluated for a range of dsRNA concentrations of three ACP candidate genes, clathrin heavy chain (CHC), vacuolar ATPase subunit A (vATPase-A), and sucrose non-fermenting protein 7 (Snf7). Gene knockdown was quantified for ACP teneral adults and 3rd instar nymphs allowed a 48 h ingestion-access period (IAP) on 10, 50,100, 200, and 500 ng/µL dsRNA dissolved in 20% sucrose followed by a 5-day post-IAP on orange jasmine shoots. Significant gene knockdown (p < 0.05) in ACP third instar nymphs and adults ranged from 12-34% and 18-39%, 5 days post-IAP on dsRNA at 10-500 and 100-500 ng/µL, respectively. The threshold concentration beyond which no significant gene knockdown and adult mortality was observed post-48 h IAP and 10-day IAP, respectively, was determined as 200 ng/µL, a concentration indicative of optimal RNAi penetrance.
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Affiliation(s)
- Esmaeil Saberi
- Southwest Florida Research and Education Center, Department of Entomology and Nematology, IFAS, University of Florida, Immokalee, FL 34142, USA;
| | - Mosharrof Mondal
- School of Plant Sciences, The University of Arizona, Tucson, AZ 85721, USA; (M.M.); (K.N.)
- RNAissance Ag, LLC, Saint Louis, MO 63132, USA
| | - Jorge R. Paredes-Montero
- Biology Department, Saginaw Valley State University, University Center, MI 48710, USA;
- Facultad de Ciencias de la Vida, Escuela Superior Politécnica del Litoral, ESPOL, Campus Gustavo Galindo, Km 30.5 Vía Perimetral, Guayaquil EC090112, Ecuador
| | - Kiran Nawaz
- School of Plant Sciences, The University of Arizona, Tucson, AZ 85721, USA; (M.M.); (K.N.)
- RNAissance Ag, LLC, Saint Louis, MO 63132, USA
| | - Judith K. Brown
- School of Plant Sciences, The University of Arizona, Tucson, AZ 85721, USA; (M.M.); (K.N.)
| | - Jawwad A. Qureshi
- Southwest Florida Research and Education Center, Department of Entomology and Nematology, IFAS, University of Florida, Immokalee, FL 34142, USA;
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Lovero D, Porcelli D, Giordano L, Lo Giudice C, Picardi E, Pesole G, Pignataro E, Palazzo A, Marsano RM. Structural and Comparative Analyses of Insects Suggest the Presence of an Ultra-Conserved Regulatory Element of the Genes Encoding Vacuolar-Type ATPase Subunits and Assembly Factors. BIOLOGY 2023; 12:1127. [PMID: 37627011 PMCID: PMC10452791 DOI: 10.3390/biology12081127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 07/28/2023] [Accepted: 08/09/2023] [Indexed: 08/27/2023]
Abstract
Gene and genome comparison represent an invaluable tool to identify evolutionarily conserved sequences with possible functional significance. In this work, we have analyzed orthologous genes encoding subunits and assembly factors of the V-ATPase complex, an important enzymatic complex of the vacuolar and lysosomal compartments of the eukaryotic cell with storage and recycling functions, respectively, as well as the main pump in the plasma membrane that energizes the epithelial transport in insects. This study involves 70 insect species belonging to eight insect orders. We highlighted the conservation of a short sequence in the genes encoding subunits of the V-ATPase complex and their assembly factors analyzed with respect to their exon-intron organization of those genes. This study offers the possibility to study ultra-conserved regulatory elements under an evolutionary perspective, with the aim of expanding our knowledge on the regulation of complex gene networks at the basis of organellar biogenesis and cellular organization.
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Affiliation(s)
- Domenica Lovero
- Dipartimento di Bioscienze Biotecnologie e Ambiente, Università Degli Studi di Bari Aldo Moro, Via Orabona 4, 70125 Bari, Italy; (D.L.); (D.P.); (E.P.); (G.P.); (E.P.); (A.P.)
- MASMEC Biomed S.p.A., Via Delle Violette 14, 70026 Modugno, Italy
| | - Damiano Porcelli
- Dipartimento di Bioscienze Biotecnologie e Ambiente, Università Degli Studi di Bari Aldo Moro, Via Orabona 4, 70125 Bari, Italy; (D.L.); (D.P.); (E.P.); (G.P.); (E.P.); (A.P.)
- METALABS S.R.L., Corso A. De Gasperi 381/1, 70125 Bari, Italy
| | - Luca Giordano
- Cardio-Pulmonary Institute (CPI), Universities of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Justus-Liebig-University, Aulweg 130, 35392 Giessen, Germany;
| | - Claudio Lo Giudice
- Istituto di Tecnologie Biomediche (ITB), Consiglio Nazionale Delle Ricerche, Via Giovanni Amendola, 122, 70126 Bari, Italy;
| | - Ernesto Picardi
- Dipartimento di Bioscienze Biotecnologie e Ambiente, Università Degli Studi di Bari Aldo Moro, Via Orabona 4, 70125 Bari, Italy; (D.L.); (D.P.); (E.P.); (G.P.); (E.P.); (A.P.)
| | - Graziano Pesole
- Dipartimento di Bioscienze Biotecnologie e Ambiente, Università Degli Studi di Bari Aldo Moro, Via Orabona 4, 70125 Bari, Italy; (D.L.); (D.P.); (E.P.); (G.P.); (E.P.); (A.P.)
| | - Eugenia Pignataro
- Dipartimento di Bioscienze Biotecnologie e Ambiente, Università Degli Studi di Bari Aldo Moro, Via Orabona 4, 70125 Bari, Italy; (D.L.); (D.P.); (E.P.); (G.P.); (E.P.); (A.P.)
| | - Antonio Palazzo
- Dipartimento di Bioscienze Biotecnologie e Ambiente, Università Degli Studi di Bari Aldo Moro, Via Orabona 4, 70125 Bari, Italy; (D.L.); (D.P.); (E.P.); (G.P.); (E.P.); (A.P.)
| | - René Massimiliano Marsano
- Dipartimento di Bioscienze Biotecnologie e Ambiente, Università Degli Studi di Bari Aldo Moro, Via Orabona 4, 70125 Bari, Italy; (D.L.); (D.P.); (E.P.); (G.P.); (E.P.); (A.P.)
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3
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Guo CF, Qiu JH, Hu YW, Xu PP, Deng YQ, Tian L, Wei YY, Sang W, Liu YT, Qiu BL. Silencing of V-ATPase-E gene causes midgut apoptosis of Diaphorina citri and affects its acquisition of Huanglongbing pathogen. INSECT SCIENCE 2022. [PMID: 36346663 DOI: 10.1111/1744-7917.13146] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 10/20/2022] [Accepted: 10/25/2022] [Indexed: 06/16/2023]
Abstract
The Asian citrus psyllid, Diaphorina citri Kuwayama, is among the most important pests of citrus. It is the main vector of the Huanglongbing (HLB) pathogen Candidatus Liberibacter asiaticus (CLas), which causes severe losses in citrus crops. Control of D. citri is therefore of paramount importance to reduce the spread of HLB. In this regard, using RNA interference (RNAi) to silence target genes is a useful strategy to control psyllids. In this study, using RNAi, we examined the biological functions of the V-ATPase subunit E (V-ATP-E) gene of D. citri, including its effect on acquisition of CLas. The amino acid sequence of V-ATP-E from D. citri had high homology with proteins from other insects. V-ATP-E was expressed at all D. citri life stages analyzed, and the expression level in mature adults was higher than that of teneral adults. Silencing of V-ATP-E resulted in a significant increase in mortality, reduced body weight, and induced cell apoptosis of the D. citri midgut. The reduced expression of V-ATP-E was indicated to inhibit CLas passing through the midgut and into the hemolymph, leading to a majority of CLas being confined to the midgut. In addition, double-stranded RNA of D. citri V-ATP-E was safe to non-target parasitic wasps. These results suggest that V-ATP-E is an effective RNAi target that can be used in D. citri control to block CLas infection.
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Affiliation(s)
- Chang-Fei Guo
- Engineering Research Center of Biocontrol, Ministry of Education and Guangdong Province, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
| | - Jun-Hong Qiu
- Chongqing Key Laboratory of Vector Insects, College of Life Sciences, Chongqing Normal University, Chongqing, China
| | - Yu-Wei Hu
- Key Laboratory of South China Modern Biological Seed Industry, MARA, National S&T Innovation Center for Modern Agricultural Industry, Guangzhou, China
| | - Pei-Ping Xu
- Engineering Research Center of Biocontrol, Ministry of Education and Guangdong Province, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
| | - Ying-Qi Deng
- Engineering Research Center of Biocontrol, Ministry of Education and Guangdong Province, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
| | - Ling Tian
- College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Yi-Yun Wei
- Chongqing Key Laboratory of Vector Insects, College of Life Sciences, Chongqing Normal University, Chongqing, China
| | - Wen Sang
- Engineering Research Center of Biocontrol, Ministry of Education and Guangdong Province, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
| | - Yu-Tao Liu
- Key Laboratory of South China Modern Biological Seed Industry, MARA, National S&T Innovation Center for Modern Agricultural Industry, Guangzhou, China
| | - Bao-Li Qiu
- Engineering Research Center of Biocontrol, Ministry of Education and Guangdong Province, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
- Chongqing Key Laboratory of Vector Insects, College of Life Sciences, Chongqing Normal University, Chongqing, China
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Guo Y, Fan Y, Teng Z, Wang L, Tan X, Wan F, Zhou H. Efficacy of RNA interference using nanocarrier-based transdermal dsRNA delivery system in the woolly apple aphid, Eriosoma lanigerum. ARCHIVES OF INSECT BIOCHEMISTRY AND PHYSIOLOGY 2022; 110:e21888. [PMID: 35388519 DOI: 10.1002/arch.21888] [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: 01/12/2022] [Revised: 02/21/2022] [Accepted: 03/08/2022] [Indexed: 06/14/2023]
Abstract
RNA interference (RNAi) is an essential approach for studying gene function and has been considered as a promising strategy for pest control. However, RNAi method has not been conducted in Woolly apple aphid (Eriosoma lanigerum Hausmann), one of the most damaging apple pests in the world. In the study, we investigated the efficacy of RNAi of V-ATPase subunit D (ATPD), an efficacious target for RNAi in other insects, in E. lanigerum by a transdermal double-stranded RNA (dsRNA) delivery system with nanocarriers. Our results showed although topical application of dsATPD in E. lanigerum for 24 h produced 40.5% gene silencing, the additional help of nanocarriers extremely improved the interference efficiency with 98.5% gene silencing. Moreover, a 55.75% mortality was observed 5 days after topical application of nanocarriers and dsATPD, relative to the control (topical application of nanocarriers and double-stranded green fluorescent protein [dsGFP]). The nanocarrier-based transdermal dsRNA delivery system will promote the development of functional analysis of vital genes and also provide a potential target for RNAi-based management of E. lanigerum.
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Affiliation(s)
- Yi Guo
- College of Plant Health & Medicine, Qingdao Agricultural University, Shandong Engineering Research Center for Environment-Friendly Agricultural Pest Management, China-Australia Joint Institute of Agricultural and Environmental Health, Qingdao, Shandong, China
| | - Yinjun Fan
- College of Plant Health & Medicine, Qingdao Agricultural University, Shandong Engineering Research Center for Environment-Friendly Agricultural Pest Management, China-Australia Joint Institute of Agricultural and Environmental Health, Qingdao, Shandong, China
| | - Ziwen Teng
- College of Plant Health & Medicine, Qingdao Agricultural University, Shandong Engineering Research Center for Environment-Friendly Agricultural Pest Management, China-Australia Joint Institute of Agricultural and Environmental Health, Qingdao, Shandong, China
| | - Lingyun Wang
- College of Plant Health & Medicine, Qingdao Agricultural University, Shandong Engineering Research Center for Environment-Friendly Agricultural Pest Management, China-Australia Joint Institute of Agricultural and Environmental Health, Qingdao, Shandong, China
| | - Xiumei Tan
- College of Plant Health & Medicine, Qingdao Agricultural University, Shandong Engineering Research Center for Environment-Friendly Agricultural Pest Management, China-Australia Joint Institute of Agricultural and Environmental Health, Qingdao, Shandong, China
| | - Fanghao Wan
- College of Plant Health & Medicine, Qingdao Agricultural University, Shandong Engineering Research Center for Environment-Friendly Agricultural Pest Management, China-Australia Joint Institute of Agricultural and Environmental Health, Qingdao, Shandong, China
- Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, Guangdong, China
| | - Hongxu Zhou
- College of Plant Health & Medicine, Qingdao Agricultural University, Shandong Engineering Research Center for Environment-Friendly Agricultural Pest Management, China-Australia Joint Institute of Agricultural and Environmental Health, Qingdao, Shandong, China
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Shi X, Liu X, Cooper AM, Silver K, Merzendorfer H, Zhu KY, Zhang J. Vacuolar (H + )-ATPase subunit c is essential for the survival and systemic RNA interference response in Locusta migratoria. PEST MANAGEMENT SCIENCE 2022; 78:1555-1566. [PMID: 34981606 DOI: 10.1002/ps.6774] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 12/19/2021] [Accepted: 01/03/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND Vacuolar (H+ )-ATPase (V-ATPase) is a multi-subunit enzyme that hydrolyzes adenosine triphosphate (ATP) to transport protons across a cellular membrane, and it plays an important role in numerous biological processes, including in growth, development and immune responses. The c subunit of V-ATPase is a highly conserved subunit of the rotatory proteolipid ring that is required for binding and transporting protons. To date, there are only a few published reports on V-ATPase-c functions in insects. RESULTS We identified and characterized the V-ATPase-c gene in Locusta migratoria, one of the most destructive agricultural insect pests in the world. LmV-ATPase-c was predominately expressed in Malpighian tubules of nymphs, followed by the hindgut and ovary, while the other tissues showed relatively low expression levels. Silencing of LmV-ATPase-c caused severe molting defects in nymphs and a high mortality rate of > 90%. Histological staining and microscopic examination of sections from the abdominal cuticle revealed the absence of newly formed cuticle in nymphs that were injected with dsLmV-ATPase-c. In addition, silencing of LmV-ATPase-c transcript levels significantly impaired RNA interference (RNAi) efficiency of a reporter gene. By quantifying double-stranded RNA (dsRNA) amounts by quantitative polymerase chain reaction (PCR), we found that RNAi against LmV-ATPase-c provoked a dramatic accumulation of dsRNA in the endosomes of epidermal and midgut cells of Locusta migratoria. CONCLUSION Our results indicate that LmV-ATPase-c is indispensable for the formation of new cuticle during the molting process and has pivotal functions in dsRNA escape from endosomes. LmV-ATPase-c might be a valuable target for developing new strategies for insect pest management. © 2022 Society of Chemical Industry.
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Affiliation(s)
- Xuekai Shi
- Institute of Applied Biology, Shanxi University, Taiyuan, China
- College of Life Sciences, Shanxi University, Taiyuan, China
| | - Xiaojian Liu
- Institute of Applied Biology, Shanxi University, Taiyuan, China
| | | | - Kristopher Silver
- Department of Entomology, Kansas State University, Manhattan, KS, USA
| | | | - Kun Yan Zhu
- Department of Entomology, Kansas State University, Manhattan, KS, USA
| | - Jianzhen Zhang
- Institute of Applied Biology, Shanxi University, Taiyuan, China
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Liu XJ, Liang XY, Guo J, Shi XK, Merzendorfer H, Zhu KY, Zhang JZ. V-ATPase subunit a is required for survival and midgut development of Locusta migratoria. INSECT MOLECULAR BIOLOGY 2022; 31:60-72. [PMID: 34528734 DOI: 10.1111/imb.12738] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Revised: 08/30/2021] [Accepted: 09/13/2021] [Indexed: 06/13/2023]
Abstract
The vacuolar-type H+ -ATPase (V-ATPase) is an ATP-dependent proton pump, which regulates various cellular processes. To date, most functional studies on V-ATPases of insects have focused on subunits of the V1 complex, and there is little information on the VO genes. In this study, two cDNA sequences of LmV-ATPase a were identified in Locusta migratoria. RT-qPCR analysis revealed that LmV-ATPase a1 and LmV-ATPase a2 are differentially expressed in various tissues and developmental stages. Injection of dsRNA for the common region of LmV-ATPase a1 and LmV-ATPase a2 into third-instar nymphs resulted in a significant suppression of LmV-ATPase a. The injected nymphs ceased feeding, lost body weight and finally died at a mortality of 98.6%. Furthermore, aberrations of midgut epithelial cells, the accumulation of electron-lucent vesicles in the cytoplasm, and a partially damaged brush border were observed in dsLmV-ATPase a-injected nymphs using transmission electron microscopy. Especially, the mRNA level of wingles, and notch genes were dramatically down-regulated in the dsLmV-ATPase a-injected nymphs. Taken together, our results suggest that LmV-ATPase a is required for survival and midgut development of L. migratoria. Hence, this gene could be a good target for RNAi-based control against locusts.
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Affiliation(s)
- X-J Liu
- Research Institute of Applied Biology, Shanxi University, Taiyuan, Shanxi, China
| | - X-Y Liang
- Research Institute of Applied Biology, Shanxi University, Taiyuan, Shanxi, China
| | - J Guo
- Research Institute of Applied Biology, Shanxi University, Taiyuan, Shanxi, China
| | - X-K Shi
- Research Institute of Applied Biology, Shanxi University, Taiyuan, Shanxi, China
| | - H Merzendorfer
- Institute of Biology, University of Siegen, Siegen, Germany
| | - K Y Zhu
- Department of Entomology, Kansas State University, Manhattan, KS, USA
| | - J-Z Zhang
- Research Institute of Applied Biology, Shanxi University, Taiyuan, Shanxi, China
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Genome-wide analysis of V-ATPase genes in Plutella xylostella (L.) and the potential role of PxVHA-G1 in resistance to Bacillus thuringiensis Cry1Ac toxin. Int J Biol Macromol 2022; 194:74-83. [PMID: 34861270 DOI: 10.1016/j.ijbiomac.2021.11.169] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 11/22/2021] [Accepted: 11/23/2021] [Indexed: 02/06/2023]
Abstract
The rapid development of insecticide resistance has hampered the use of Bacillus thuringiensis (Bt), a widely used bio-pesticide. Plutella xylostella (L.) is a globally distributed lepidopteran pest of cruciferous vegetables and has developed severe field resistance to the Bt toxin. Vacuolar H+-ATPases (VHA) are multi-subunit complexes and participate in multiple physiological processes. However, the characterization and functional studies of VHA genes are lacking in insects. This study performed a genome-wide analysis and identified 35 VHA gene family members divided into 15 subfamilies in P. xylostella. We cloned a V-ATPase subunit G gene, PxVHA-G1, in our previous midgut transcriptome profiles. Quantitative reverse transcriptase-polymerase chain reaction results showed that PxVHA-G1 was upregulated in the Cry1S1000-resistant strain than in the G88-susceptible strain, and its expression profile revealed that the midgut, Malpighian tubules, and larva stages generally showed high expression levels. RNAi-mediated knockdown of the PxVHA-G1 gene increased the susceptibility of P. xylostella (G88 and Cry1S1000) to Cry1Ac toxin. Our study is the first to explore the role of PxVHA-G1 on regulating Cry1Ac toxicity in P. xylostella, thus, providing new insights into the role of VHAs in the development of Cry1Ac resistance and sustainable development of pest management.
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Ghazy NA, Suzuki T. Environmental RNAi-based reverse genetics in the predatory mite Neoseiulus californicus: Towards improved methods of biological control. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2022; 180:104993. [PMID: 34955179 DOI: 10.1016/j.pestbp.2021.104993] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Revised: 10/31/2021] [Accepted: 11/15/2021] [Indexed: 06/14/2023]
Abstract
The predatory mite Neoseiulus californicus (McGregor) (Mesostigmata: Phytoseiidae) has been commercialized by manufacturers in the pest control industry and is used worldwide as a natural enemy of spider mites. However, because its genome has not been sequenced, reverse genetics techniques that could be used to analyze gene function have not been established. Here we partially sequenced the gene that encodes the vacuolar-type H+-ATPase (V-ATPase), an ATP-dependent proton pump, in N. californicus (NcVATPase) and then conducted a functional analysis using environmental RNA interference (eRNAi) by orally administering sequence-specific exogenous dsRNA (dsRNA-NcVATPase) to larvae and adult females. The larvae treated with dsRNA-NcVATPase took longer to develop and had lower survivorship, fecundity, and offspring viability at the adult stage than those treated with a control dsRNA. Adult females treated with dsRNA-NcVATPase showed significant reductions in survival, fecundity, and prey consumption, and their endogenous gene expression level of NcVATPase was reduced by approximately 65% compared with the control. Our findings suggest that the NcVATPase gene, silencing of which inhibits feeding and reproduction, is an excellent biomarker for investigating the eRNAi mechanism in N. californicus. The highly efficient experimental system of eRNAi established in this study paves the way for applied research using eRNAi to enhance the predatory ability of N. californicus.
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Affiliation(s)
- Noureldin Abuelfadl Ghazy
- Graduate School of Bio-Applications and Systems Engineering, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588, Japan; Agriculture Zoology Department, Faculty of Agriculture, Mansoura University, 35516 El-Mansoura, Egypt; Japan Society for the Promotion of Science, Chiyoda, Tokyo 102-0083, Japan.
| | - Takeshi Suzuki
- Graduate School of Bio-Applications and Systems Engineering, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588, Japan; Institute of Global Innovation Research, Tokyo University of Agriculture and Technology, Fuchu, Tokyo 183-8538, Japan.
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9
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Zeng J, Mu LL, Jin L, Ali Anjum A, Li GQ. RNAi of vacuolar-type H +-ATPase genes causes growth delay and molting defect in Henosepilachna vigintioctopunctata. BULLETIN OF ENTOMOLOGICAL RESEARCH 2021; 111:1-10. [PMID: 34112278 DOI: 10.1017/s0007485321000420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Henosepilachna vigintioctopunctata is one of the most serious insect pests to a large number of nightshades and cucurbits. RNA interference (RNAi) triggered by double-stranded RNA (dsRNA) offers a reduced risk approach to control the beetle. Identification of amenable target genes and determination of appropriate life stage for dsRNA treatment are two critical steps in order to improve RNAi efficiency. In the present paper, we identified three vATPase genes, namely HvvATPaseC, HvvATPaseE and HvvATPaseH. We found that the three transcripts were widely expressed in the eggs, first- to fourth-instar larvae, prepupae, pupae and adults. They were abundantly transcribed in the hindgut and Malpighian tubules, in contrast to the epidermis and fat body. Three days' ingestion of dsvATPaseC, dsvATPaseE and dsvATPaseH by the fourth-instar larvae significantly decreased corresponding transcript level by 90.1, 88.9 and 97.2%, greatly reduced larval fresh weight by 28.0, 29.9 and 28.0%, and caused 66.7, 100 and 78.7% larval lethality respectively. Comparably, 3 days' exposure of the third-instar larvae to dsvATPaseC significantly reduced HvvATPaseC mRNA level by 89.5%, decreased approximately 80% of the larval fresh weight, and killed 100% of the treated larvae. Therefore, the three vATPase genes, especially HvvATPaseE, are potential amenable target genes and young larvae are more susceptible to dsRNA. Our findings will enable the development of the dsRNA-based pesticide to control H. vigintioctopunctata.
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Affiliation(s)
- Jie Zeng
- Education Ministry Key Laboratory of Integrated Management of Crop Diseases and Pests, College of Plant Protection, Nanjing Agricultural University, Nanjing210095, China
| | - Li-Li Mu
- Education Ministry Key Laboratory of Integrated Management of Crop Diseases and Pests, College of Plant Protection, Nanjing Agricultural University, Nanjing210095, China
| | - Lin Jin
- Education Ministry Key Laboratory of Integrated Management of Crop Diseases and Pests, College of Plant Protection, Nanjing Agricultural University, Nanjing210095, China
| | - Ahmad Ali Anjum
- Education Ministry Key Laboratory of Integrated Management of Crop Diseases and Pests, College of Plant Protection, Nanjing Agricultural University, Nanjing210095, China
| | - Guo-Qing Li
- Education Ministry Key Laboratory of Integrated Management of Crop Diseases and Pests, College of Plant Protection, Nanjing Agricultural University, Nanjing210095, China
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Hou X, Chen X, Yang H, Yue W, Wang J, Han H, Wang C. V-ATPase subunit B plays essential roles in the molting process of the Chinese mitten crab, Eriocheir sinensis. Biol Open 2020; 9:bio048926. [PMID: 32434771 PMCID: PMC7272352 DOI: 10.1242/bio.048926] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Accepted: 04/27/2020] [Indexed: 11/23/2022] Open
Abstract
Vacuolar ATPase (V-ATPase) is a proton pump driven by ATP hydrolysis, and it plays an important role in numerous biological processes, such as protein degradation and synthesis, cell growth, and cell autophagy. The V-ATPase subunit B (VATB) is a conservative and regulatory subunit required for ATP hydrolysis during proton pumping. The VATB of Eriocheirsinensis (EsVATB), which includes an open reading frame (ORF) length of 1467 bp encoding 489 amino acids, was cloned to unveil the biological function of VATB during the molting process of crustaceans. Spatial and temporal expression profiles showed that EsVATB was highly expressed in the posterior gill accompanied with the highest osmotic pressure in the premolt (PrM) stage. Meanwhile, the highest expression level of EsVATB was identified in the hepatopancreas and heart during the postmolt stage and epidermis in the intermolt stage, indicating that EsVATB may perform diverse biological functions in different tissues during the molting process. The individual crabs in the interference group showed a high mortality rate (74%) and a low molting rate (26%) and failed to form a new epicuticle in the PrM stage. Meanwhile, a significant difference in osmotic pressure was identified between the interference and control groups. Our results indicate that EsVATB is an indispensable functional gene that may participate in osmoregulation and help with the new epicuticle formation during the molting process of E. sinensis.
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Affiliation(s)
- Xin Hou
- Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture, Shanghai Ocean University, Shanghai, 201306, China
- National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, 201306, China
- Shanghai Engineering Research Center of Aquaculture, Shanghai Ocean University, Shanghai, 201306, China
| | - Xiaowen Chen
- Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture, Shanghai Ocean University, Shanghai, 201306, China
- National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, 201306, China
- Shanghai Engineering Research Center of Aquaculture, Shanghai Ocean University, Shanghai, 201306, China
| | - He Yang
- Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture, Shanghai Ocean University, Shanghai, 201306, China
| | - Wucheng Yue
- Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture, Shanghai Ocean University, Shanghai, 201306, China
- National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, 201306, China
- Shanghai Engineering Research Center of Aquaculture, Shanghai Ocean University, Shanghai, 201306, China
| | - Jun Wang
- Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture, Shanghai Ocean University, Shanghai, 201306, China
- National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, 201306, China
- Shanghai Engineering Research Center of Aquaculture, Shanghai Ocean University, Shanghai, 201306, China
| | - Hua Han
- Department of Pharmacy, School of Medicine, Tongji University, Shanghai, 200433, China
| | - Chenghui Wang
- Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture, Shanghai Ocean University, Shanghai, 201306, China
- National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, 201306, China
- Shanghai Engineering Research Center of Aquaculture, Shanghai Ocean University, Shanghai, 201306, China
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11
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Sato K, Miyata K, Ozawa S, Hasegawa K. Systemic RNAi of V-ATPase subunit B causes molting defect and developmental abnormalities in Periplaneta fuliginosa. INSECT SCIENCE 2019; 26:721-731. [PMID: 29285882 DOI: 10.1111/1744-7917.12565] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Revised: 11/13/2017] [Accepted: 12/05/2017] [Indexed: 06/07/2023]
Abstract
The vacuolar (H+ )-ATPases (V-ATPases) are ATP-driven proton pumps with multiple functions in many organisms. In this study, we performed structural and functional analysis of vha55 gene that encodes V-ATPase subunit B in the smokybrown cockroach Periplaneta fuliginosa (Blattodea). We observed a high homology score of the deduced amino acid sequences between 10 species in seven orders. RNAi of the vha55 gene in P. fuliginosa caused nymphal/nymphal molting defects with incomplete shedding of old cuticles, growth inhibition, as well as bent and wrinkled cuticles of thoraxes and abdominal segments. Since growth inhibition caused by vha55 RNAi did not interfere in the commencement of cockroach molting, molting timing and body growth might be controlled by independent mechanism. Our study suggested V-ATPases might be a good candidate molecule for evolutionary and developmental studies of insect molting.
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Affiliation(s)
- Kazuki Sato
- Laboratory of Nematology, Department of Applied Biological Sciences, Saga University, Honjo 1, Saga, Japan
- The United Graduate School of Agricultural Sciences, Kagoshima University, Korimoto 1-21-24, Kagoshima, Japan
| | - Keita Miyata
- Department of Biomedical Sciences, College of Life and Health Sciences, Chubu University, Kasugai, Aichi, Japan
| | - Sota Ozawa
- Department of Environmental Biology, College of Bioscience & Biotechnology, Chubu University, Kasugai, Aichi, Japan
| | - Koichi Hasegawa
- Department of Environmental Biology, College of Bioscience & Biotechnology, Chubu University, Kasugai, Aichi, Japan
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12
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Wang W, Wan P, Lai F, Zhu T, Fu Q. Double-stranded RNA targeting calmodulin reveals a potential target for pest management of Nilaparvata lugens. PEST MANAGEMENT SCIENCE 2018; 74:1711-1719. [PMID: 29381254 DOI: 10.1002/ps.4865] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2017] [Revised: 01/03/2018] [Accepted: 01/11/2018] [Indexed: 06/07/2023]
Abstract
BACKGROUND Calmodulin (CaM) is an essential protein in cellular activity and plays important roles in many processes in insect development. RNA interference (RNAi) has been hypothesized to be a promising method for pest control. CaM is a good candidate for RNAi target. However, the sequence and function of CaM in Nilaparvata lugens are unknown. Furthermore, the double-stranded RNA (dsRNA) target to CaM gene in pest control is still unavailable. RESULTS In the present study, two alternatively spliced variants of CaM transcripts, designated NlCaM1 and NlCaM2, were cloned from N. lugens. The two cDNA sequences exhibited 100% identity to each other in the open reading frame (ORF), and only differed in the 3' untranslated region (UTR). NlCaM including NlCaM1 and NlCaM2 mRNA was detectable in all developmental stages and tissues of N. lugens, with significantly increased expression in the salivary glands. Knockdown of NlCaM expression by RNAi with different dsRNAs led to an inability to molt properly, increased mortality, which ranged from 49.7 to 92.5%, impacted development of the ovaries and led to female infertility. There were no significant reductions in the transcript levels of vitellogenin and its receptor or in the total vitellogenin protein level relative to the control group. However, a significant reduction in vitellogenin protein was detected in ovaries injected with dsNlCaM. In addition, a specific dsRNA of NlCaM for control of N. lugens was designed and tested. CONCLUSION NlCaM plays important roles mainly in nymph development and uptake of vitellogenin by ovaries in vitellogenesis in N. lugens. dsRNA derived from the less conserved 3'-UTR of NlCaM shows great potential for RNAi-based N. lugens management. © 2018 Society of Chemical Industry.
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Affiliation(s)
- Weixia Wang
- State Key Lab of Rice Biology, China Rice Research Institute, Hangzhou, Zhejiang, China
| | - Pinjun Wan
- State Key Lab of Rice Biology, China Rice Research Institute, Hangzhou, Zhejiang, China
| | - Fengxiang Lai
- State Key Lab of Rice Biology, China Rice Research Institute, Hangzhou, Zhejiang, China
| | - Tingheng Zhu
- College of Biological and Environmental Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang, China
| | - Qiang Fu
- State Key Lab of Rice Biology, China Rice Research Institute, Hangzhou, Zhejiang, China
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13
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Shi S, Zuo H, Gao L, Yi X, Zhong G. Silencing of Rieske Iron-Sulfur Protein Impacts Upon the Development and Reproduction of Spodoptera exigua by Regulating ATP Synthesis. Front Physiol 2018; 9:575. [PMID: 29881355 PMCID: PMC5977497 DOI: 10.3389/fphys.2018.00575] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Accepted: 05/01/2018] [Indexed: 01/24/2023] Open
Abstract
Rieske iron-sulfur protein (RISP) is a key protein subunit of mitochondrial complex III which plays an important role in the respiratory electron transport chain. The complete cDNA of RISP was cloned from Spodoptera exigua by real time quantitative PCR and rapid-amplification of cDNA ends (RACE) technology and named as SeRISP (GenBank Accession Number: JN992290). Multiple alignments and the creation of a phylogenetic tree revealed that RISPs are highly conserved among different insects, and the highly conserved region of RISPs is mainly located at the C-terminal which serves as the functional domain. Expression pattern analysis demonstrated that SeRISP is expressed in all developmental stages of S. exigua; the expression levels increased during larval growth, remained stable during development from fourth instar to pupa and reached a peak in the adult. In addition, SeRISP was significantly suppressed at both the mRNA and protein levels by feeding the instar stage with dsRNA; levels of suppression increased with increasing dsRNA concentration and continuous treatment time. The silencing of SeRISP in larvae led to the significant inhibition of ATP synthesis and larval growth, which could result in energy reserve deficiency in pupae and the suppression of fecundity and hatchability in adults. Our findings confirmed that it is possible to silence target genes in S. exigua by simple dsRNA feeding, and provided evidence of the essential role of RISP in the process of ATP synthesis, growth and reproduction.
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Affiliation(s)
- Song Shi
- Key Laboratory of Crop Integrated Pest Management in South China, Ministry of Agriculture, South China Agricultural University, Guangzhou, China.,Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou, China
| | - Hongliang Zuo
- Key Laboratory of Crop Integrated Pest Management in South China, Ministry of Agriculture, South China Agricultural University, Guangzhou, China.,Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou, China
| | - Lu Gao
- Key Laboratory of Crop Integrated Pest Management in South China, Ministry of Agriculture, South China Agricultural University, Guangzhou, China.,Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou, China
| | - Xin Yi
- Key Laboratory of Crop Integrated Pest Management in South China, Ministry of Agriculture, South China Agricultural University, Guangzhou, China.,Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou, China
| | - Guohua Zhong
- Key Laboratory of Crop Integrated Pest Management in South China, Ministry of Agriculture, South China Agricultural University, Guangzhou, China.,Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou, China
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14
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Fujita T, Kozuka-Hata H, Hori Y, Takeuchi J, Kubo T, Oyama M. Shotgun proteomics deciphered age/division of labor-related functional specification of three honeybee (Apis mellifera L.) exocrine glands. PLoS One 2018; 13:e0191344. [PMID: 29447197 PMCID: PMC5813902 DOI: 10.1371/journal.pone.0191344] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2017] [Accepted: 01/03/2018] [Indexed: 12/15/2022] Open
Abstract
The honeybee (Apis mellifera L.) uses various chemical signals produced by the worker exocrine glands to maintain the functioning of its colony. The roles of worker postcerebral glands (PcGs), thoracic glands (TGs), and mandibular glands (MGs) and the functional changes they undergo according to the division of labor from nursing to foraging are not as well studied. To comprehensively characterize the molecular roles of these glands in workers and their changes according to the division of labor of workers, we analyzed the proteomes of PcGs, TGs, and MGs from nurse bees and foragers using shotgun proteomics technology. We identified approximately 2000 proteins from each of the nurse bee or forager glands and highlighted the features of these glands at the molecular level by semiquantitative enrichment analyses of frequently detected, gland-selective, and labor-selective proteins. First, we found the high potential to produce lipids in PcGs and MGs, suggesting their relation to pheromone production. Second, we also found the proton pumps abundant in TGs and propose some transporters possibly related to the saliva production. Finally, our data unveiled candidate enzymes involved in labor-dependent acid production in MGs.
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Affiliation(s)
- Toshiyuki Fujita
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
- * E-mail: (TF); (MO)
| | - Hiroko Kozuka-Hata
- Medical Proteomics Laboratory, The Institute of Medical Science, The University of Tokyo, Minato-ku, Tokyo, Japan
| | - Yutaro Hori
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
- Institute of Molecular and Cellular Biosciences, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Jun Takeuchi
- Medical Research Institute, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
| | - Takeo Kubo
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Masaaki Oyama
- Medical Proteomics Laboratory, The Institute of Medical Science, The University of Tokyo, Minato-ku, Tokyo, Japan
- * E-mail: (TF); (MO)
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15
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Lin YH, Huang JH, Liu Y, Belles X, Lee HJ. Oral delivery of dsRNA lipoplexes to German cockroach protects dsRNA from degradation and induces RNAi response. PEST MANAGEMENT SCIENCE 2017; 73:960-966. [PMID: 27470169 DOI: 10.1002/ps.4407] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2016] [Revised: 06/09/2016] [Accepted: 07/25/2016] [Indexed: 05/28/2023]
Abstract
BACKGROUND In the past years, the concept of RNAi application for insect pest control has been proposed, considering the disruption of vital genes. However, the efficiency of RNAi is variable between different insect groups, especially by oral delivery of dsRNA. The purpose of this study is to assess the possibilities of RNAi as a tool for pest control using oral delivery of the dsRNAs encapsulated by liposome in the German cockroach Blattella germanica, which is highly sensitive to RNAi by injection of dsRNAs. RESULTS Injecting dsRNA into the abdomen of B. germanica caused dramatic depletion of essential α-tubulin gene and mortality. In contrast, oral delivery of the naked dsRNA resulted in lower RNAi efficiency, accounting for rapid degradation of the dsRNA in the midgut of B. germanica. Notably, we have further demonstrated that continuous ingestion of dsRNA lipoplexes in which dsRNA was encapsulated with a cationic liposome carrier was sufficient to slow down the degradation of dsRNA in the midgut and to increase the mortality of the German cockroach by significantly inhibiting α-tubulin expression in the midgut. CONCLUSION We provide empirical evidence that the formulation of dsRNA lipoplexes could be a plausible approach for insect pest control based on RNAi. © 2016 Society of Chemical Industry.
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Affiliation(s)
- Yu-Hsien Lin
- Department of Entomology, National Taiwan University, Taipei, Taiwan
| | - Jia-Hsin Huang
- Department of Entomology, National Taiwan University, Taipei, Taiwan
| | - Yun Liu
- Department of Entomology, National Taiwan University, Taipei, Taiwan
| | - Xavier Belles
- CSIC-UPF, Institute of Evolutionary Biology, Barcelona, Spain
| | - How-Jing Lee
- Department of Entomology, National Taiwan University, Taipei, Taiwan
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16
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Camargo RA, Barbosa GO, Possignolo IP, Peres LEP, Lam E, Lima JE, Figueira A, Marques-Souza H. RNA interference as a gene silencing tool to control Tuta absoluta in tomato (Solanum lycopersicum). PeerJ 2016; 4:e2673. [PMID: 27994959 PMCID: PMC5162399 DOI: 10.7717/peerj.2673] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2016] [Accepted: 10/09/2016] [Indexed: 12/13/2022] Open
Abstract
RNA interference (RNAi), a gene-silencing mechanism that involves providing double-stranded RNA molecules that match a specific target gene sequence, is now widely used in functional genetic studies. The potential application of RNAi-mediated control of agricultural insect pests has rapidly become evident. The production of transgenic plants expressing dsRNA molecules that target essential insect genes could provide a means of specific gene silencing in larvae that feed on these plants, resulting in larval phenotypes that range from loss of appetite to death. In this report, we show that the tomato leafminer ( Tuta absoluta ), a major threat to commercial tomato production, can be targeted by RNAi. We selected two target genes (Vacuolar ATPase-A and Arginine kinase) based on the RNAi response reported for these genes in other pest species. In view of the lack of an artificial diet for T. absoluta, we used two approaches to deliver dsRNA into tomato leaflets. The first approach was based on the uptake of dsRNA by leaflets and the second was based on "in planta-induced transient gene silencing" (PITGS), a well-established method for silencing plant genes, used here for the first time to deliver in planta-transcribed dsRNA to target insect genes. Tuta absoluta larvae that fed on leaves containing dsRNA of the target genes showed an ∼60% reduction in target gene transcript accumulation, an increase in larval mortality and less leaf damage. We then generated transgenic 'Micro-Tom' tomato plants that expressed hairpin sequences for both genes and observed a reduction in foliar damage by T. absoluta in these plants. Our results demonstrate the feasibility of RNAi as an alternative method for controlling this critical tomato pest.
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Affiliation(s)
- Roberto A Camargo
- Centro de Energia Nuclear na Agricultura, Universidade de São Paulo, Piracicaba, São Paulo, Brazil; Escola Superior de Agricultura "Luiz de Queiroz" (ESALQ), Universidade de São Paulo, Piracicaba, São Paulo, Brazil
| | - Guilherme O Barbosa
- Departamento de Bioquímica e Biologia Tecidual, Universidade Estadual de Campinas , Campinas , São Paulo , Brazil
| | - Isabella Presotto Possignolo
- Centro de Energia Nuclear na Agricultura, Universidade de São Paulo, Piracicaba, São Paulo, Brazil; Escola Superior de Agricultura "Luiz de Queiroz" (ESALQ), Universidade de São Paulo, Piracicaba, São Paulo, Brazil
| | - Lazaro E P Peres
- Escola Superior de Agricultura "Luiz de Queiroz" (ESALQ), Universidade de São Paulo , Piracicaba , São Paulo , Brazil
| | - Eric Lam
- Department of Plant Biology & Pathology, Rutgers, The State University of New Jersey , New Brunswick , NJ , United States
| | - Joni E Lima
- Centro de Energia Nuclear na Agricultura, Universidade de São Paulo, Piracicaba, São Paulo, Brazil; Departamento de Botânica, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Antonio Figueira
- Centro de Energia Nuclear na Agricultura, Universidade de São Paulo , Piracicaba , São Paulo , Brazil
| | - Henrique Marques-Souza
- Departamento de Bioquímica e Biologia Tecidual, Universidade Estadual de Campinas , Campinas , São Paulo , Brazil
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17
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Hu J, Xia Y. F1 -ATP synthase α-subunit: a potential target for RNAi-mediated pest management of Locusta migratoria manilensis. PEST MANAGEMENT SCIENCE 2016; 72:1433-1439. [PMID: 26558746 DOI: 10.1002/ps.4185] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Revised: 10/27/2015] [Accepted: 11/06/2015] [Indexed: 06/05/2023]
Abstract
BACKGROUND The migratory locust is one of the most destructive agricultural pests worldwide. ATP synthase (F0 F1 -ATPase) uses proton or sodium motive force to produce 90% of the cellular ATP, and the α-subunit of F1 -ATP synthase (ATP5A) is vital for F1 -ATP synthase. Here, we tested whether ATP5A could be a potential target for RNAi-mediated pest management of L. migratoria. RESULTS Lm-ATP5A was cloned and characterised. Lm-ATP5A is expressed in all tissues. Injection of 100 ng of the double-stranded RNA of ATP5A (dsATP5A) knocked down the transcription of the target gene and caused mortality in 1.5-5 days. The Lm-ATP5A protein level, the oligomycin-sensitive ATP synthetic and hydrolytic activities and the ATP content were correspondingly reduced following dsATP5A injection. CONCLUSION These findings demonstrated the essential roles of Lm-ATP5A in L. migratoria and identified it as a potential target for insect pest control. © 2015 Society of Chemical Industry.
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Affiliation(s)
- Jun Hu
- Genetic Engineering Research Centre, College of Life Science, Chongqing University, Chongqing, China
- Chongqing Engineering Research Centre for Fungal Insecticide, Chongqing, China
- Key Laboratory of Gene Function and Regulation Technologies under the Chongqing Municipal Education Commission, Chongqing, China
| | - Yuxian Xia
- Genetic Engineering Research Centre, College of Life Science, Chongqing University, Chongqing, China
- Chongqing Engineering Research Centre for Fungal Insecticide, Chongqing, China
- Key Laboratory of Gene Function and Regulation Technologies under the Chongqing Municipal Education Commission, Chongqing, China
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18
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Santos D, Vanden Broeck J, Wynant N. Systemic RNA interference in locusts: reverse genetics and possibilities for locust pest control. CURRENT OPINION IN INSECT SCIENCE 2014; 6:9-14. [PMID: 32846691 DOI: 10.1016/j.cois.2014.09.013] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2014] [Revised: 09/10/2014] [Accepted: 09/18/2014] [Indexed: 06/11/2023]
Abstract
RNA interference (RNAi) is a biological process triggered by double stranded (ds)RNA that results in sequence-dependent mRNA degradation. Because of its high specificity, this post-transcriptional gene silencing mechanism is a widely used tool for reverse genetics in several insect species. In particular, locusts possess a very robust and sensitive RNAi response that has already been exploited to investigate a diverse range of important physiological processes. These orthopteran insects constitute important model organisms in several areas of entomology, but they can also become voracious swarming pests that threaten the agricultural production in large parts of the world. In comparison to the widely applied chemical insecticides, the RNAi-technology could contribute to the development of a novel generation of insecticides, with high species-specificity. In this article, we discuss the potential of the RNAi-technology in loss of function studies in locusts, as well as to control locust populations.
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Affiliation(s)
- Dulce Santos
- Molecular Developmental Physiology and Signal Transduction, Department of Animal Physiology and Neurobiology, KU Leuven, Naamsestraat 59, P.O. Box 02465, B-3000 Leuven, Belgium
| | - Jozef Vanden Broeck
- Molecular Developmental Physiology and Signal Transduction, Department of Animal Physiology and Neurobiology, KU Leuven, Naamsestraat 59, P.O. Box 02465, B-3000 Leuven, Belgium
| | - Niels Wynant
- Molecular Developmental Physiology and Signal Transduction, Department of Animal Physiology and Neurobiology, KU Leuven, Naamsestraat 59, P.O. Box 02465, B-3000 Leuven, Belgium.
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