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Jin L, Yan K, Kong H, Li J, Fan C, Pan Y, Shang Q. The Fat Body-Specific GST Gene SlGSTe11 Enhances the Tolerance of Spodoptera litura to Cyantraniliprole and Nicotine. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:19680-19688. [PMID: 39225316 DOI: 10.1021/acs.jafc.4c05747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/04/2024]
Abstract
Spodoptera litura is a significant agricultural pest, and its glutathione S-transferase (GST) plays a crucial role in insecticide resistance. This study aimed to investigate the relationship between the SlGSTe11 gene of S. litura and resistance to cyantraniliprole and nicotine. Transcriptome analysis revealed that SlGSTe11 is highly expressed mainly in fat bodies, with a significant increase in SlGSTe11 gene expression under induction by cyantraniliprole and nicotine. The ectopic expression of the SlGSTe11 gene in transgenic fruit flies resulted in a 5.22-fold increase in the tolerance to cyantraniliprole. Moreover, compared to the UAS-SlGSTe11 line, the Act5C-UAS>SlGSTe11 line laid more eggs and had a lower mortality after nicotine exposure. RNAi-mediated inhibition of SlGSTe11 gene expression led to a significant increase in the mortality of S. litura under cyantraniliprole exposure. In vitro metabolism experiments demonstrated that the recombinant SlGSTe11 protein efficiently metabolizes cyantraniliprole. Molecular docking results indicated that SlGSTe11 has a strong affinity for both cyantraniliprole and nicotine. These findings suggest that SlGSTe11 is involved in the development of resistance to cyantraniliprole and nicotine in S. litura.
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Affiliation(s)
- Long Jin
- College of Plant Science, Jilin University, Changchun 130062, PR China
| | - Kunpeng Yan
- College of Plant Science, Jilin University, Changchun 130062, PR China
| | - Haoran Kong
- College of Plant Science, Jilin University, Changchun 130062, PR China
| | - Jianyi Li
- College of Plant Science, Jilin University, Changchun 130062, PR China
| | - Chengcheng Fan
- College of Plant Science, Jilin University, Changchun 130062, PR China
| | - Yiou Pan
- College of Plant Science, Jilin University, Changchun 130062, PR China
| | - Qingli Shang
- College of Plant Science, Jilin University, Changchun 130062, PR China
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Zhang G, Meng L, Chen R, Wang W, Jing X, Zhu-Salzman K, Cheng W. Characterization of three glutathione S-transferases potentially associated with adaptation of the wheat blossom midge Sitodiplosis mosellana to host plant defense. PEST MANAGEMENT SCIENCE 2024; 80:885-895. [PMID: 37814473 DOI: 10.1002/ps.7824] [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: 07/12/2023] [Revised: 09/25/2023] [Accepted: 10/10/2023] [Indexed: 10/11/2023]
Abstract
BACKGROUND Insect glutathione S-transferases (GSTs), a multifunctional protein family, play a crucial role in detoxification of plant defensive compounds. However, they have been rarely investigated in Sitodiplosis mosellana, a destructive pest of wheat worldwide. In this study, we characterized for the first time a delta (SmGSTd1) and two epsilon GST genes (SmGSTe1 and SmGSTe2) and analyzed their expression patterns and functions associated with adaptation to host plant defense in this species. RESULTS Expression of these SmGST genes greatly increased in S. mosellana larvae feeding on resistant wheat varieties Kenong1006, Shanmai139 and Jinmai47 which contain higher tannin and ferulic acid, the major defensive compounds of wheat against this pest, compared with those feeding on susceptible varieties Xinong822, Xinong88 and Xiaoyan22. Their expression was also tissue-specific, most predominant in larval midgut. Recombinant SmGSTs expressed in Escherichia coli could catalyze the conjugation of 1-chloro-2,4-dinitrobenzene, with activity peak at pH around 7.0 and temperature between 30 and 40 °C. Notably, they could metabolize tannin and ferulic acid, with the strongest metabolic ability by SmGSTe2 against two compounds, followed by SmGSTd1 on tannin, and SmGSTe1 on ferulic acid. CONCLUSION The results suggest that these SmGSTs are important in metabolizing wheat defensive chemicals during feeding, which may be related to host plant adaptation of S. mosellana. Our study has provided information for future investigation and development of strategies such as host-induced gene silencing of insect-detoxifying genes for managing pest adaptation. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Guojun Zhang
- Key Laboratory of Plant Protection Resources and Pest Management of Ministry of Education, College of Plant Protection, Northwest A&F University, Yangling, China
| | - Linqin Meng
- Key Laboratory of Plant Protection Resources and Pest Management of Ministry of Education, College of Plant Protection, Northwest A&F University, Yangling, China
| | - Rui Chen
- Yantai City Research Centre for Rural Development of Chinese Academy of Social Sciences, Yantai, China
| | - Wen Wang
- Key Laboratory of Plant Protection Resources and Pest Management of Ministry of Education, College of Plant Protection, Northwest A&F University, Yangling, China
| | - Xiangfeng Jing
- Key Laboratory of Plant Protection Resources and Pest Management of Ministry of Education, College of Plant Protection, Northwest A&F University, Yangling, China
| | - Keyan Zhu-Salzman
- Department of Entomology, Texas A&M University, College Station, TX, USA
| | - Weining Cheng
- Key Laboratory of Plant Protection Resources and Pest Management of Ministry of Education, College of Plant Protection, Northwest A&F University, Yangling, China
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Li Y, Wu B, Hao X, Diao J, Cao J, Tan R, Ma W, Ma L. Functional analysis of 3 genes in xenobiotic detoxification pathway of Bursaphelenchus xylophilus against matrine. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2023; 190:105334. [PMID: 36740342 DOI: 10.1016/j.pestbp.2022.105334] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 12/21/2022] [Accepted: 12/29/2022] [Indexed: 06/18/2023]
Abstract
Bursaphelenchus xylophilus is the causative agent of pine wilt disease. It has caused devastating damage to ecosystems worldwide, owing to the characteristic of being widely spread and uncontrollable. However, the current methods of control are mainly based on pesticides, which can cause irreversible damage to the ecosystem. Therefore, the search for new drug targets and the development of environmentally friendly nematicides is especially valuable. In this study, three key genes of the xenobiotic detoxification pathways were cloned from B. xylophilus, which were subsequently subjected to bioinformatic analysis. The bioassay experiment was carried out to determine the concentration of matrine required for further tests. Subsequently, enzyme activity detection and three gene expression pattern analysis were performed on matrine treated nematodes. Finally, RNA interference was conducted to verify the functions carried out by the three genes in combating matrine. The results indicated that cytochrome P450 and glutathione S-transferase of B. xylophilus were activated by matrine, which induced high expression of BxCYP33C4, BxGST1, and BxGST3. After RNA interference of three genes of B. xylophilus, the sensitivity of B. xylophilus to matrine was increased and the survival rate of nematodes was reduced to various degrees in comparison to the control group. Overall, the results fully demonstrated that BxCYP33C4, BxGST1, and BxGST3 are valuable drug targets for B. xylophilus. Furthermore, the results suggested that matrine has value for development and exploitation in the prevention and treatment of B. xylophilus.
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Affiliation(s)
- Yang Li
- School of Forestry, Northeast Forestry University, Harbin 150000, China.
| | - Bi Wu
- School of Biological Science and Medical Engineering, State Key Laboratory of Bioelectronics, Southeast University, Nanjing 210096, China.
| | - Xin Hao
- School of Forestry, Northeast Forestry University, Harbin 150000, China.
| | - Jian Diao
- School of Forestry, Northeast Forestry University, Harbin 150000, China
| | - Jingxin Cao
- School of Forestry, Northeast Forestry University, Harbin 150000, China.
| | - Ruina Tan
- School of Forestry, Northeast Forestry University, Harbin 150000, China
| | - Wei Ma
- College of Pharmacy, Heilongjiang University of Chinese Medicine, Harbin 150000, China.
| | - Ling Ma
- School of Forestry, Northeast Forestry University, Harbin 150000, China.
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Song XH, Li N, Yang CJ, Wu Y, Huang GH. Heliothis virescens ascovirus 3h blocks the cell cycle of Spodoptera exigua fat body cells at G 2 /M phase by downregulating cyclin B 1 and cyclin-dependent kinase 1. J Cell Physiol 2021; 237:1936-1947. [PMID: 34957549 DOI: 10.1002/jcp.30665] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 12/06/2021] [Accepted: 12/10/2021] [Indexed: 11/07/2022]
Abstract
Ascoviruses are double-stranded DNA viruses that are pathogenic to noctuid larvae. In vitro infection causes the cells to fail to replicate and proliferate normally. However, the molecular mechanisms are unclear. In this study, the transmission electron microscopy data of infected-Spodoptera exigua (Hübner) fat body cells (SeFB, IOZCAS-SpexII-A cells) showed that virions were internalized in phagocytic vesicles, but not in the nucleus. FACS of cell-cycle progression was performed in SeFB cells infected with Heliothis virescens ascovirus 3h (HvAV-3h). The cell cycle phase distributions of the SeFB cells were G1 = 29.52 ± 1.10%, S = 30.33 ± 1.19%, and G2 /M = 40.06 ± 0.75%. The cell culture doubling time was approximately 24 h. The G1 , S, and G2 /M phases were each approximately 8 h. The unsynchronized or synchronized cells were arrested at G2 /M phase after infection with HvAV-3h. Our data also showed that cells with more than 4N DNA content appeared in the HvAV-3h-treated group. While the mRNA levels of cyclin B1 , cyclin H, and cyclin-dependent kinase 1 (CDK1) were downregulated after HvAV-3h infection, the mRNA expression levels of cyclin A, cyclin D, and cyclin B2 were not significantly changed. Western blotting results showed that the expression of cyclin B1 and CDK1 in infected SeFB cells within 24 h postinfection (hpi), and HvAV-3h infection inhibited the expression of cyclin B1 and CDK1 at 12-24 hpi. Overall, these data implied that HvAV-3h infection leads to an accumulation of cells in the G2 /M phases by downregulating the expression of cyclin B1 and CDK1.
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Affiliation(s)
- Xiao-Hui Song
- Hunan Agricultural University, Changsha, Hunan, P.R. China
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests/College of Plant Protection, Hunan Agricultural University, Changsha, Hunan, P.R. China
| | - Ni Li
- Hunan Agricultural University, Changsha, Hunan, P.R. China
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests/College of Plant Protection, Hunan Agricultural University, Changsha, Hunan, P.R. China
| | - Chang-Jin Yang
- Hunan Agricultural University, Changsha, Hunan, P.R. China
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests/College of Plant Protection, Hunan Agricultural University, Changsha, Hunan, P.R. China
| | - Yanyang Wu
- Hunan Agricultural University, Changsha, Hunan, P.R. China
- Food Science and Technology College, Hunan Agricultural University, Changsha, Hunan, P.R. China
| | - Guo-Hua Huang
- Hunan Agricultural University, Changsha, Hunan, P.R. China
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests/College of Plant Protection, Hunan Agricultural University, Changsha, Hunan, P.R. China
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Wang Q, Rui C, Wang L, Nahiyoon SA, Huang W, Zhu J, Ji X, Yang Q, Yuan H, Cui L. Field-evolved resistance to 11 insecticides and the mechanisms involved in Helicoverpa armigera (Lepidoptera: Noctuidae). PEST MANAGEMENT SCIENCE 2021; 77:5086-5095. [PMID: 34231946 DOI: 10.1002/ps.6548] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Revised: 07/01/2021] [Accepted: 07/07/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND To understand the ongoing resistance of cotton bollworm, Helicoverpa armigera, the sensitivity of five field populations to commonly used insecticides, indoxacarb, abamectin, methoxyfenozide, chlorfenapyr, chlorantraniliprole, spinetoram, lambda-cyhalothrin, carbosulfan, metaflumizone, chlorpyrifos, and flufenoxuron, were evaluated. Furthermore, the biochemical and molecular mechanisms of field-evolved resistance in H. armigera were also investigated. RESULTS Five field populations of H. armigera showed moderate resistance to indoxacarb, chlorantraniliprole, metaflumizone, methoxyfenozide, carbosulfan and lambda-cyhalothrin. The resistance ratio (RR) of indoxacarb was significantly correlated with glutathione-S-transferases (GSTs) activity (r = 0.913, P = 0.011). Methoxyfenozide RR was largely correlated with cytochrome P450s activity (r = 0.860, P = 0.028). Besides, six cytochrome P450s genes of CYP4L5 in AQP, CYP6B7 and CYP9A14 in HDP and BDP, CYP9A17V2 in HDP and YSP, CYP332A1 in HDP, LFP, AQP and YSP, CYP337B1 in YSP, and two GSTs genes of GSTd1 and GSTs1 in HDP were overexpressed (>5-fold). Moreover, indoxacarb RR was positively correlated with the overexpression of GSTs1, GSTd1 and CYP9A14 genes (r = 0.880, 0.98 and 0.86, P = 0.021, 0.001 and 0.028, respectively). The transcript of CYP9A17V2 and CYP337B1 were found to be correlated with metaflumizone RR (r = 0.950, P = 0.004) and carbosulfan RR (r = 0.850, P = 0.033), respectively. CONCLUSION H. armigera can be effectively controlled using abamectin, chlorfenapyr, chlorpyrifos and spinetoram in Hebei and Shandong provinces. The present study demonstrated that the relative expression level of GSTs1, GSTd1, CYP9A14, CYP9A17V2 and CYP337B1 genes were significantly correlated with the resistance ratio to indoxacarb, metaflumizone and carbosulfan in field H. armigera.
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Affiliation(s)
- Qinqin Wang
- Key Laboratory of Integrated Pest Management in Crops, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Ministry of Agriculture and Rural Affairs, Beijing, China
| | - Changhui Rui
- Key Laboratory of Integrated Pest Management in Crops, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Ministry of Agriculture and Rural Affairs, Beijing, China
| | - Li Wang
- Key Laboratory of Integrated Pest Management in Crops, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Ministry of Agriculture and Rural Affairs, Beijing, China
| | - Shahzad Ali Nahiyoon
- Key Laboratory of Integrated Pest Management in Crops, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Ministry of Agriculture and Rural Affairs, Beijing, China
| | - Weiling Huang
- Key Laboratory of Integrated Pest Management in Crops, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Ministry of Agriculture and Rural Affairs, Beijing, China
| | - Junshu Zhu
- College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Xuejiao Ji
- Key Laboratory of Integrated Pest Management in Crops, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Ministry of Agriculture and Rural Affairs, Beijing, China
| | - Qingjie Yang
- Key Laboratory of Integrated Pest Management in Crops, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Ministry of Agriculture and Rural Affairs, Beijing, China
| | - Huizhu Yuan
- Key Laboratory of Integrated Pest Management in Crops, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Ministry of Agriculture and Rural Affairs, Beijing, China
| | - Li Cui
- Key Laboratory of Integrated Pest Management in Crops, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Ministry of Agriculture and Rural Affairs, Beijing, China
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Resistance in the Genus Spodoptera: Key Insect Detoxification Genes. INSECTS 2021; 12:insects12060544. [PMID: 34208014 PMCID: PMC8230579 DOI: 10.3390/insects12060544] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 06/04/2021] [Accepted: 06/08/2021] [Indexed: 11/17/2022]
Abstract
The genus Spodoptera (Lepidoptera: Noctuidae) includes species that are among the most important crop pests in the world. These polyphagous species are able to feed on many plants, including corn, rice and cotton. In addition to their ability to adapt to toxic compounds produced by plants, they have developed resistance to the chemical insecticides used for their control. One of the main mechanisms developed by insects to become resistant involves detoxification enzymes. In this review, we illustrate some examples of the role of major families of detoxification enzymes such as cytochromes P450, carboxyl/cholinesterases, glutathione S-transferases (GST) and transporters such as ATP-binding cassette (ABC) transporters in insecticide resistance. We compare available data for four species, Spodoptera exigua, S. frugiperda, S. littoralis and S. litura. Molecular mechanisms underlying the involvement of these genes in resistance will be described, including the duplication of the CYP9A cluster, over-expression of GST epsilon or point mutations in acetylcholinesterase and ABCC2. This review is not intended to be exhaustive but to highlight the key roles of certain genes.
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Yang Y, Xiong Y, Li HF, Zhao HJ, Tang GH, Meng LW, Wang JJ, Jiang HB. The adipokinetic hormone signaling system regulates the sensitivity of Bactrocera dorsalis to malathion. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2021; 174:104808. [PMID: 33838709 DOI: 10.1016/j.pestbp.2021.104808] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 02/15/2021] [Accepted: 02/20/2021] [Indexed: 06/12/2023]
Abstract
The neuropeptide adipokinetic hormone (AKH) binds to the AKH receptor (AKHR) to regulate carbohydrate and lipid metabolism. It also participates in the insect anti-stress response. We used RT-qPCR to detect the expression levels of 39 neuropeptides in malathion-susceptible (MS) and malathion-resistant (MR) strains of Bactrocera dorsalis. AKH and AKHR were highly expressed in the MR strain. Using a malathion bioassay and RNA interference (RNAi), we demonstrated that AKHR is involved in the susceptibility of B. dorsalis to malathion. We found significantly reduced expression of two detoxification enzyme genes (glutathione-S-transferase, GST and α-esterase, CarE) after AKHR RNAi. Based on our previous data, GSTd10 and CarE6 participate the direct metabolism of malathion in this fly, which is also verified by a malathion metabolism assay by HPLC using the crude enzymes in the current study. These results suggest that AKHR plays an important role in affecting malathion susceptibility via detoxification enzyme genes.
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Affiliation(s)
- Yang Yang
- Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, China; State Cultivation Base of Crop Stress Biology for Southern Mountainous Land of Southwest University, China; International Joint Laboratory of China-Belgium on Sustainable Crop Pest Control, Academy of Agricultural Sciences, Southwest University, Chongqing 400716, China
| | - Ying Xiong
- Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, China; State Cultivation Base of Crop Stress Biology for Southern Mountainous Land of Southwest University, China; International Joint Laboratory of China-Belgium on Sustainable Crop Pest Control, Academy of Agricultural Sciences, Southwest University, Chongqing 400716, China
| | - Hong-Fei Li
- Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, China; State Cultivation Base of Crop Stress Biology for Southern Mountainous Land of Southwest University, China; International Joint Laboratory of China-Belgium on Sustainable Crop Pest Control, Academy of Agricultural Sciences, Southwest University, Chongqing 400716, China
| | - Huai-Jia Zhao
- Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, China; State Cultivation Base of Crop Stress Biology for Southern Mountainous Land of Southwest University, China; International Joint Laboratory of China-Belgium on Sustainable Crop Pest Control, Academy of Agricultural Sciences, Southwest University, Chongqing 400716, China
| | - Guang-Hui Tang
- Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, China; State Cultivation Base of Crop Stress Biology for Southern Mountainous Land of Southwest University, China; International Joint Laboratory of China-Belgium on Sustainable Crop Pest Control, Academy of Agricultural Sciences, Southwest University, Chongqing 400716, China
| | - Li-Wei Meng
- Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, China; State Cultivation Base of Crop Stress Biology for Southern Mountainous Land of Southwest University, China; International Joint Laboratory of China-Belgium on Sustainable Crop Pest Control, Academy of Agricultural Sciences, Southwest University, Chongqing 400716, China
| | - Jin-Jun Wang
- Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, China; State Cultivation Base of Crop Stress Biology for Southern Mountainous Land of Southwest University, China; International Joint Laboratory of China-Belgium on Sustainable Crop Pest Control, Academy of Agricultural Sciences, Southwest University, Chongqing 400716, China
| | - Hong-Bo Jiang
- Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, China; State Cultivation Base of Crop Stress Biology for Southern Mountainous Land of Southwest University, China; International Joint Laboratory of China-Belgium on Sustainable Crop Pest Control, Academy of Agricultural Sciences, Southwest University, Chongqing 400716, China.
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Li ZQ, Song XH, Wang M, Wang S, Huang GH. Melanization induced by Heliothis virescens ascovirus 3h promotes viral replication. INSECT SCIENCE 2021; 28:472-484. [PMID: 32243720 DOI: 10.1111/1744-7917.12786] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 03/19/2020] [Accepted: 03/22/2020] [Indexed: 06/11/2023]
Abstract
Melanization is an important innate immune defense mechanism of insects, which can kill invading pathogens. Most pathogens, for their survival and reproduction, inhibit the melanization of the host. Interestingly, our results suggested that after infection with Heliothis virescens ascovirus 3h (HvAV-3h), the speed of melanization in infected Spodoptera exigua larval hemolymph was accelerated and that the phenoloxidase (PO) activity of hemolymph in larvae infected with HvAV-3h increased significantly (1.20-fold at 96 hpi, 1.52-fold at 120 hpi, 1.23-fold at 144 hpi, 1.12-fold at 168 hpi). The transcription level of the gene encoding S. exigua prophenoloxidase-1 (SePPO-1 gene) was upregulated dramatically in the fat body during the middle stage of infection. In addition, when melanization was inhibited or promoted, the replication of HvAV-3h was inhibited or promoted, respectively. In conclusion, infection with HvAV-3h can markedly induce melanization in the middle stage of infection, and melanization is helpful for HvAV-3h viral replication.
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Affiliation(s)
- Zi-Qi Li
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, Hunan Agricultural University, Changsha, China
- College of Plant Protection, Hunan Agricultural University, Changsha, China
| | - Xiao-Hui Song
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, Hunan Agricultural University, Changsha, China
- College of Plant Protection, Hunan Agricultural University, Changsha, China
| | - Min Wang
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, Hunan Agricultural University, Changsha, China
- College of Plant Protection, Hunan Agricultural University, Changsha, China
| | - Shu Wang
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, Hunan Agricultural University, Changsha, China
- College of Plant Protection, Hunan Agricultural University, Changsha, China
| | - Guo-Hua Huang
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, Hunan Agricultural University, Changsha, China
- College of Plant Protection, Hunan Agricultural University, Changsha, China
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Meng LW, Peng ML, Chen ML, Yuan GR, Zheng LS, Bai WJ, Smagghe G, Wang JJ. A glutathione S-transferase (BdGSTd9) participates in malathion resistance via directly depleting malathion and its toxic oxide malaoxon in Bactrocera dorsalis (Hendel). PEST MANAGEMENT SCIENCE 2020; 76:2557-2568. [PMID: 32128980 DOI: 10.1002/ps.5810] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 02/23/2020] [Accepted: 03/03/2020] [Indexed: 06/10/2023]
Abstract
BACKGROUND The oriental fruit fly, Bactrocera dorsalis (Hendel), is a widespread agricultural pest that has evolved resistance to many commonly used insecticides including malathion. Glutathione S-transferases (GSTs) are multifunctional enzymes that metabolize insecticides directly or indirectly. The specific mechanism used by GSTs to confer malathion resistance in B. dorsalis is unclear. RESULTS BdGSTd9 was identified from B. dorsalis and was expressed at twice the level in a malathion-resistant strain (MR) than in a susceptible strain (MS). By using RNAi of BdGSTd9, the toxicity of malathion against MR was increased. Protein modelling and docking of BdGSTd9 with malathion and malaoxon indicated key amino acid residues for direct binding in the active site. In vitro assays with engineered Sf9 cells overexpressing BdGSTd9 demonstrated lower cytotoxicity of malathion. High performance liquid chromatography (HPLC) analysis indicated that malathion could be broken down significantly by BdGSTd9, and it also could deplete the malathion metabolite malaoxon, which possesses a higher toxicity to B. dorsalis. Taken together, the BdGSTd9 of B. dorsalis could not only deplete malathion, but also react with malaoxon and therefore enhance malathion resistance. CONCLUSION BdGSTd9 is a component of malathion resistance in B. dorsalis. It acts by depleting both malathion and malaoxon. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Li-Wei Meng
- Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing, China
- International Joint Laboratory of China-Belgium on Sustainable Crop Pest Control, State Cultivation Base of Crop Stress Biology for Southern Mountainous Land, Academy of Agricultural Sciences, Southwest University, Chongqing, China
| | - Meng-Lan Peng
- Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing, China
| | - Meng-Ling Chen
- Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing, China
| | - Guo-Rui Yuan
- Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing, China
- International Joint Laboratory of China-Belgium on Sustainable Crop Pest Control, State Cultivation Base of Crop Stress Biology for Southern Mountainous Land, Academy of Agricultural Sciences, Southwest University, Chongqing, China
| | - Li-Sha Zheng
- Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing, China
- International Joint Laboratory of China-Belgium on Sustainable Crop Pest Control, State Cultivation Base of Crop Stress Biology for Southern Mountainous Land, Academy of Agricultural Sciences, Southwest University, Chongqing, China
| | - Wen-Jie Bai
- Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing, China
| | - Guy Smagghe
- Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing, China
- International Joint Laboratory of China-Belgium on Sustainable Crop Pest Control, State Cultivation Base of Crop Stress Biology for Southern Mountainous Land, Academy of Agricultural Sciences, Southwest University, Chongqing, China
- Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
| | - Jin-Jun Wang
- Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing, China
- International Joint Laboratory of China-Belgium on Sustainable Crop Pest Control, State Cultivation Base of Crop Stress Biology for Southern Mountainous Land, Academy of Agricultural Sciences, Southwest University, Chongqing, China
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Saruta F, Yamada N, Yamamoto K. Functional Analysis of an Epsilon-Class Glutathione S-Transferase From Nilaparvata lugens (Hemiptera: Delphacidae). JOURNAL OF INSECT SCIENCE (ONLINE) 2019; 19:5586714. [PMID: 31606747 PMCID: PMC6790247 DOI: 10.1093/jisesa/iez096] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Indexed: 05/24/2023]
Abstract
Glutathione conjugation is a crucial step in xenobiotic detoxification. In the current study, we have functionally characterized an epsilon-class glutathione S-transferase (GST) from a brown planthopper Nilaparvata lugens (nlGSTE). The amino acid sequence of nlGSTE revealed approximately 36-44% identity with epsilon-class GSTs of other species. The recombinant nlGSTE was prepared in soluble form by bacterial expression and was purified to homogeneity. Mutation experiments revealed that the putative substrate-binding sites, including Phe107, Arg112, Phe118, and Phe119, were important for glutathione transferase activity. Furthermore, inhibition study displayed that nlGSTE activity was affected by insecticides, proposing that, in brown planthopper, nlGSTE could recognize insecticides as substrates.
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Affiliation(s)
- Fumiko Saruta
- Department of Bioscience and Biotechnology, Kyushu University Graduate School, Nishi-ku, Fukuoka, Japan
| | - Naotaka Yamada
- Department of Bioscience and Biotechnology, Kyushu University Graduate School, Nishi-ku, Fukuoka, Japan
| | - Kohji Yamamoto
- Department of Bioscience and Biotechnology, Kyushu University Graduate School, Nishi-ku, Fukuoka, Japan
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11
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Hou Y, Qiao C, Wang Y, Wang Y, Ren X, Wei Q, Wang Q. Cold-Adapted Glutathione S-Transferases from Antarctic Psychrophilic Bacterium Halomonas sp. ANT108: Heterologous Expression, Characterization, and Oxidative Resistance. Mar Drugs 2019; 17:md17030147. [PMID: 30832239 PMCID: PMC6471826 DOI: 10.3390/md17030147] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 02/20/2019] [Accepted: 02/25/2019] [Indexed: 12/29/2022] Open
Abstract
Glutathione S-transferases are one of the most important antioxidant enzymes to protect against oxidative damage induced by reactive oxygen species. In this study, a novel gst gene, designated as hsgst, was derived from Antarctic sea ice bacterium Halomonas sp. ANT108 and expressed in Escherichia coli (E. coli) BL21. The hsgst gene was 603 bp in length and encoded a protein of 200 amino acids. Compared with the mesophilic EcGST, homology modeling indicated HsGST had some structural characteristics of cold-adapted enzymes, such as higher frequency of glycine residues, lower frequency of proline and arginine residues, and reduced electrostatic interactions, which might be in relation to the high catalytic efficiency at low temperature. The recombinant HsGST (rHsGST) was purified to apparent homogeneity with Ni-affinity chromatography and its biochemical properties were investigated. The specific activity of the purified rHsGST was 254.20 nmol/min/mg. The optimum temperature and pH of enzyme were 25 °C and 7.5, respectively. Most importantly, rHsGST retained 41.67% of its maximal activity at 0 °C. 2.0 M NaCl and 0.2% H₂O₂ had no effect on the enzyme activity. Moreover, rHsGST exhibited its protective effects against oxidative stresses in E. coli cells. Due to its high catalytic efficiency and oxidative resistance at low temperature, rHsGST may be a potential candidate as antioxidant in low temperature health foods.
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Affiliation(s)
- Yanhua Hou
- School of Marine Science and Technology, Harbin Institute of Technology, Weihai 264209, China.
| | - Chenhui Qiao
- School of Marine Science and Technology, Harbin Institute of Technology, Weihai 264209, China.
| | - Yifan Wang
- School of Marine Science and Technology, Harbin Institute of Technology, Weihai 264209, China.
| | - Yatong Wang
- School of Marine Science and Technology, Harbin Institute of Technology, Weihai 264209, China.
| | - Xiulian Ren
- School of Marine Science and Technology, Harbin Institute of Technology, Weihai 264209, China.
| | - Qifeng Wei
- School of Marine Science and Technology, Harbin Institute of Technology, Weihai 264209, China.
| | - Quanfu Wang
- School of Marine Science and Technology, Harbin Institute of Technology, Weihai 264209, China.
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Durand N, Pottier MA, Siaussat D, Bozzolan F, Maïbèche M, Chertemps T. Glutathione-S-Transferases in the Olfactory Organ of the Noctuid Moth Spodoptera littoralis, Diversity and Conservation of Chemosensory Clades. Front Physiol 2018; 9:1283. [PMID: 30319435 PMCID: PMC6171564 DOI: 10.3389/fphys.2018.01283] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Accepted: 08/27/2018] [Indexed: 01/11/2023] Open
Abstract
Glutathione-S-transferases (GSTs) are conjugating enzymes involved in the detoxification of a wide range of xenobiotic compounds. The expression of GSTs as well as their activities have been also highlighted in the olfactory organs of several species, including insects, where they could play a role in the signal termination and in odorant clearance. Using a transcriptomic approach, we identified 33 putative GSTs expressed in the antennae of the cotton leafworm Spodoptera littoralis. We established their expression patterns and revealed four olfactory-enriched genes in adults. In order to investigate the evolution of antennal GST repertoires in moths, we re-annotated antennal transcripts corresponding to GSTs in two moth and one coleopteran species. We performed a large phylogenetic analysis that revealed an unsuspected structural—and potentially functional—diversity of GSTs within the olfactory organ of insects. This led us to identify a conserved clade containing most of the already identified antennal-specific and antennal-enriched GSTs from moths. In addition, for all the sequences from this clade, we were able to identify a signal peptide, which is an unusual structural feature for GSTs. Taken together, these data highlight the diversity and evolution of GSTs in the olfactory organ of a pest species and more generally in the olfactory system of moths, and also the conservation of putative extracellular members across multiple insect orders.
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Affiliation(s)
- Nicolas Durand
- Sorbonne Université, INRA, CNRS, UPEC, IRD, Univ. P7, Institute of Ecology and Environmental Sciences of Paris, Paris, France
| | - Marie-Anne Pottier
- Sorbonne Université, INRA, CNRS, UPEC, IRD, Univ. P7, Institute of Ecology and Environmental Sciences of Paris, Paris, France
| | - David Siaussat
- Sorbonne Université, INRA, CNRS, UPEC, IRD, Univ. P7, Institute of Ecology and Environmental Sciences of Paris, Paris, France
| | - Françoise Bozzolan
- Sorbonne Université, INRA, CNRS, UPEC, IRD, Univ. P7, Institute of Ecology and Environmental Sciences of Paris, Paris, France
| | - Martine Maïbèche
- Sorbonne Université, INRA, CNRS, UPEC, IRD, Univ. P7, Institute of Ecology and Environmental Sciences of Paris, Paris, France
| | - Thomas Chertemps
- Sorbonne Université, INRA, CNRS, UPEC, IRD, Univ. P7, Institute of Ecology and Environmental Sciences of Paris, Paris, France
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13
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Hu F, Ye K, Tu XF, Lu YJ, Thakur K, Jiang L, Wei ZJ. Identification and expression profiles of twenty-six glutathione S-transferase genes from rice weevil, Sitophilus oryzae (Coleoptera: Curculionidae). Int J Biol Macromol 2018; 120:1063-1071. [PMID: 30179695 DOI: 10.1016/j.ijbiomac.2018.08.185] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Revised: 08/28/2018] [Accepted: 08/30/2018] [Indexed: 11/28/2022]
Abstract
The rice weevil, Sitophilus oryzae, is one of the most destructive pests in stored cereals products. In this study, 26 cDNAs encoding glutathione S-transferases (GSTs) were sequenced and characterized in S. oryzae. Phylogenetic analysis displayed the categorization of 26 GSTs into six different cytosolic classes, including two in the delta, twelve in epsilon, three in omega, six in sigma, two in theta, and one in zeta class. RT-qPCR assay illustrated that the relative expression of ten GST genes was significantly higher in adult stages than in larval and pupal developmental stages. Tissue-specific expression analysis revealed that the SoGSTe5, SoGSTe7, SoGSTe12, and SoGSTz1 were up-regulated in the midgut, SoGSTe2, SoGSTe6, and SoGSTs2 were up-regulated in the fat body, and three GSTs (SoGSTd1, SoGSTd2 and SoGSTe4) were up-regulated in Malpighian tubules. RT-qPCR indicated that five GST genes were over expressed after exposure to phosphine at various times and concentrations. The increase in GST gene expressions after phosphine exposure in S. oryzae may lead to an improved tolerance for fumigations and xenobiotics.
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Affiliation(s)
- Fei Hu
- School of Food Science and Engineering, Hefei University of Technology, Hefei 230009, People's Republic of China.
| | - Kan Ye
- School of Food Science and Engineering, Hefei University of Technology, Hefei 230009, People's Republic of China
| | - Xiao-Fang Tu
- School of Food Science and Engineering, Hefei University of Technology, Hefei 230009, People's Republic of China
| | - Yu-Jie Lu
- College of Food Science and Technology, Henan University of Technology, Zhengzhou 450051, People's Republic of China
| | - Kiran Thakur
- School of Food Science and Engineering, Hefei University of Technology, Hefei 230009, People's Republic of China.
| | - Li Jiang
- School of Food Science and Engineering, Hefei University of Technology, Hefei 230009, People's Republic of China.
| | - Zhao-Jun Wei
- School of Food Science and Engineering, Hefei University of Technology, Hefei 230009, People's Republic of China; Key Laboratory of Functional Compound Seasoning in Anhui Province, Anhui Qiangwang Seasoning Food Co., Ltd., Jieshou 236500, People's Republic of China.
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14
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The toxicological impact of some avermectins on human erythrocytes glutathione S-transferase enzyme. J Biochem Mol Toxicol 2018; 32:e22205. [DOI: 10.1002/jbt.22205] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Revised: 07/05/2018] [Accepted: 07/06/2018] [Indexed: 01/02/2023]
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Cheng J, Wang CY, Lyu ZH, Lin T. Multiple Glutathione S-Transferase Genes in Heortia vitessoides (Lepidoptera: Crambidae): Identification and Expression Patterns. JOURNAL OF INSECT SCIENCE (ONLINE) 2018; 18:5037911. [PMID: 29912411 PMCID: PMC6007275 DOI: 10.1093/jisesa/iey064] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Accepted: 06/05/2018] [Indexed: 05/13/2023]
Abstract
To elucidate the role of glutathione S-transferases (GSTs) in Heortia vitessoides Moore (Lepidoptera: Crambidae), one of the most destructive defoliating pests in Aquilaria sinensis (Lour.) Gilg (Thymelaeaceae) forests, 16 GST cDNAs were identified in the transcriptome of adult H. vitessoides. All cDNAs included a complete open reading frame and were designated HvGSTd1-HvGSTu2. A phylogenetic analysis showed that the 16 HvGSTs were classified into seven different cytosolic classes; three in delta, two in epsilon, three in omega, three in sigma, one in theta, two in zeta, and two in unclassified. The expression patterns of these HvGSTs in various larval and adult tissues, following exposure to half the lethal concentrations (LC50s) of chlorantraniliprole and beta-cypermethrin, were determined using real-time quantitative polymerase chain reaction (RT-qPCR). The expression levels of the 16 HvGSTs were found to differ among various larval and adult tissues. Furthermore, the RT-qPCR confirmed that the transcription levels of nine (HvGSTd1, HvGSTd3, HvGSTe2, HvGSTe3, HvGSTo3, HvGSTs1, HvGSTs3, HvGSTu1, and HvGSTu2) and six (HvGSTd1, HvGSTd3, HvGSTe2, HvGSTo2, HvGSTs1, and HvGSTu1) HvGST genes were significantly higher in the fourth-instar larvae following exposure to the insecticides chlorantraniliprole and beta-cypermethrin, respectively. These genes are potential candidates involved in the detoxification of these two insecticides. Further studies utilizing the RNA interference approach are required to enhance our understanding of the functions of these genes in this forest pest.
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Affiliation(s)
- Jie Cheng
- College of Forestry and Landscape Architecture, South China Agricultural University, Wushan Street, Guangzhou, Guangdong, China
| | - Chun-Yan Wang
- College of Forestry and Landscape Architecture, South China Agricultural University, Wushan Street, Guangzhou, Guangdong, China
| | - Zi-Hao Lyu
- College of Forestry and Landscape Architecture, South China Agricultural University, Wushan Street, Guangzhou, Guangdong, China
| | - Tong Lin
- College of Forestry and Landscape Architecture, South China Agricultural University, Wushan Street, Guangzhou, Guangdong, China
- Corresponding author, e-mail:
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16
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Balakrishnan B, Su S, Wang K, Tian R, Chen M. Identification, Expression, and Regulation of an Omega Class Glutathione S-transferase in Rhopalosiphum padi (L.) (Hemiptera: Aphididae) Under Insecticide Stress. Front Physiol 2018; 9:427. [PMID: 29731722 PMCID: PMC5920109 DOI: 10.3389/fphys.2018.00427] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Accepted: 04/05/2018] [Indexed: 01/01/2023] Open
Abstract
Glutathione S-transferases (GSTs) play an essential role in the detoxification of xenobiotic toxins in insects, including insecticides. However, few data are available for the bird cherry-oat aphid, Rhopalosiphum padi (L.). In this study, we cloned and sequenced the full-length cDNA of an omega GST gene (RpGSTO1) from R. padi, which contains 720 bp in length and encodes 239 amino acids. A phylogenetic analysis revealed that RpGSTO1 belongs to the omega class of insect GSTs. RpGSTO1 gene was highly expressed in transformed Escherichia coli and the protein was purified by affinity chromatography. The recombinant RpGSTO1 displayed reduced glutathione (GSH)-dependent conjugating activity toward the substrate 1-chloro-2, 4-dinitrobenzene (CDNB) substrate. The recombinant RpGSTO1 protein exhibited optimal activity at pH 7.0 and 30°C. In addition, a disk diffusion assay showed that E. coli overexpressing RpGSTO1 increased resistance to cumene hydroperoxide-induced oxidative stress. Real-time quantitative PCR analysis showed that the relative expression level of RpGSTO1 was different in response to different insecticides, suggesting that the enzyme could contribute to insecticide metabolism in R. padi. These findings indicate that RpGSTO1 may play a crucial role in counteracting oxidative stress and detoxifying the insecticides. The results of our study contribute to a better understanding the mechanisms of insecticide detoxification and resistance in R. padi.
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Affiliation(s)
- Balachandar Balakrishnan
- State Key Laboratory of Crop Stress Biology for Arid Areas and Key Laboratory of Crop Pest Integrated Pest Management on the Loess Plateau of Ministry of Agriculture, Northwest A&F University, Yangling, China
| | - Sha Su
- State Key Laboratory of Crop Stress Biology for Arid Areas and Key Laboratory of Crop Pest Integrated Pest Management on the Loess Plateau of Ministry of Agriculture, Northwest A&F University, Yangling, China
| | - Kang Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas and Key Laboratory of Crop Pest Integrated Pest Management on the Loess Plateau of Ministry of Agriculture, Northwest A&F University, Yangling, China
| | - Ruizheng Tian
- State Key Laboratory of Crop Stress Biology for Arid Areas and Key Laboratory of Crop Pest Integrated Pest Management on the Loess Plateau of Ministry of Agriculture, Northwest A&F University, Yangling, China
| | - Maohua Chen
- State Key Laboratory of Crop Stress Biology for Arid Areas and Key Laboratory of Crop Pest Integrated Pest Management on the Loess Plateau of Ministry of Agriculture, Northwest A&F University, Yangling, China
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17
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Yu X, Killiny N. RNA interference of two glutathione S-transferase genes, Diaphorina citri DcGSTe2 and DcGSTd1, increases the susceptibility of Asian citrus psyllid (Hemiptera: Liviidae) to the pesticides fenpropathrin and thiamethoxam. PEST MANAGEMENT SCIENCE 2018; 74:638-647. [PMID: 28971568 DOI: 10.1002/ps.4747] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Revised: 07/28/2017] [Accepted: 09/25/2017] [Indexed: 06/07/2023]
Abstract
BACKGROUND The Asian citrus psyllid, Diaphorina citri Kuwayama, is an important agricultural pest of citrus globally. Foliar application of chemical insecticides is the most widely used option for reducing D. citri populations. Knockdown of glutathione S-transferase (GST) in several insect species leads to increased susceptibility to insecticides; however, information about the detoxifying role of GST genes in D. citri is unavailable. RESULTS Via a sequence homology search, we isolated and characterized three DcGST genes (DcGSTd1, DcGSTe1 and DcGSTe2) from D. citri. Phylogenetic analysis grouped DcGSTd1 into the delta class of GST genes, whereas DcGSTe1 and DcGSTe2 were clustered in the epsilon clade. Gene expression analysis revealed that chlorpyrifos treatment increased the mRNA levels of DcGSTe1 and fenpropathrin enhanced the expression level of DcGSTd1, while DcGSTe2 was significantly up-regulated after exposure to thiamethoxam at a dose of 30% lethal concentration (LC30). RNA interference (RNAi) of DcGSTe2 and DcGSTd1 followed by an insecticide bioassay increased the mortalities of thiamethoxam-treated psyllids by 23.0% and fenpropathrin-treated psyllids by 15.0%. In contrast, knockdown of DcGSTe1 did not significantly increase the susceptibility of D. citri to any of these three insecticides. Further, feeding with double-stranded RNA (dsDcGSTe2-d1) interfusion co-silenced DcGSTe2 and DcGSTd1 expression in D. citri, and led to an increase of susceptibility to both fenpropathrin and thiamethoxam. CONCLUSION The findings suggest that DcGSTe2 and DcGSTd1 play unique roles in detoxification of the pesticides thiamethoxam and fenpropathrin. In addition, co-silencing by creating a well-designed dsRNA interfusion against multiple genes was a good RNAi strategy in D. citri. © 2017 Society of Chemical Industry.
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Affiliation(s)
- Xiudao Yu
- Citrus Research and Education Center, IFAS, University of Florida, Lake Alfred, FL, USA
- School of Agricultural Engineering/Henan Collaborative Innovation Center of Water Security for Water Source Region of Mid-line of South-to-North Diversion Project/Henan Key Laboratory of Insect Biology in Funiu Mountain, Nanyang Normal University, Nanyang, Henan, China
| | - Nabil Killiny
- Citrus Research and Education Center, IFAS, University of Florida, Lake Alfred, FL, USA
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18
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He C, Xie W, Yang X, Wang SL, Wu QJ, Zhang YJ. Identification of glutathione S-transferases in Bemisia tabaci (Hemiptera: Aleyrodidae) and evidence that GSTd7 helps explain the difference in insecticide susceptibility between B. tabaci Middle East-Minor Asia 1 and Mediterranean. INSECT MOLECULAR BIOLOGY 2018; 27:22-35. [PMID: 28767183 DOI: 10.1111/imb.12337] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The Bemisia tabaci (Gennadius) (Hemiptera:Aleyrodidae) species complex includes invasive and destructive pests of field crops, and the sibling species MEAM1 and MED are its two most damaging members. Previous research indicated that the replacement of Middle East-Minor Asia 1 (MEAM1) by Mediterranean (MED) as the dominant B. tabaci species in China can be mainly attributed to MED's greater tolerance to insecticides. Glutathione S-transferases (GSTs) play important roles in the detoxification of hydrophobic toxic compounds. To increase our understanding of differences in insecticide resistance between B. tabaci MEAM1 and MED, we searched the genomic and transcriptomic databases and identified 23 putative GSTs in both B. tabaci MEAM1 and MED. Through measuring mRNA levels of 18 of the GSTs after B. tabaci MEAM1 and MED adults were exposed to the insecticide imidacloprid, we found that the expression levels were increased more in B. tabaci MED than in MEAM1 (in particular, the expression level of GST-d7 was increased by 4.39-fold relative to the control). Knockdown of GST-d7 in B. tabaci MED but not in B. tabaci MEAM1 resulted in a substantial increase in the mortality of imidacloprid-treated adults. These results indicate that differences in GST-d7 may help explain why insecticide tolerance is greater in B. tabaci MED than in B. tabaci MEAM1.
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Affiliation(s)
- C He
- College of Plant Protection of Hunan Agricultural University, Changsha, China
- Department of Plant Protection, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, China
| | - W Xie
- Department of Plant Protection, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, China
| | - X Yang
- Department of Plant Protection, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, China
| | - S-L Wang
- Department of Plant Protection, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Q-J Wu
- Department of Plant Protection, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Y-J Zhang
- Department of Plant Protection, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, China
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Electrophoretic pattern of glutathione S-transferase (GST) in antibiotic resistance Gram-positive bacteria from poultry litter. Microb Pathog 2017; 110:285-290. [PMID: 28687323 DOI: 10.1016/j.micpath.2017.07.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2017] [Revised: 07/01/2017] [Accepted: 07/03/2017] [Indexed: 11/21/2022]
Abstract
The present study is aimed to assess the role of glutathione S-transferase (GST) in antibiotic resistance among the bacteria isolated from the poultry litter and to identify the effect of GST to reduce the antimicrobial activity of antibiotics. Induction of various antibiotics to Staphylococcus, Streptococcus and Micrococcus sp. isolated from the poultry litter showed that the activity of GST was three to four folds higher than those of control. Analysis of the isozyme pattern of GST revealed that variation in the expression may be due to antibiotic resistance. The results concluded that GST might play an important role in the protection against the toxic effect of the antimicrobial agents which leads bacteria to become resistant to antibiotics.
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20
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Xu P, Han N, Kang T, Zhan S, Lee KS, Jin BR, Li J, Wan H. SeGSTo, a novel glutathione S-transferase from the beet armyworm (Spodoptera exigua), involved in detoxification and oxidative stress. Cell Stress Chaperones 2016; 21:805-16. [PMID: 27230212 PMCID: PMC5003797 DOI: 10.1007/s12192-016-0705-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Revised: 05/18/2016] [Accepted: 05/20/2016] [Indexed: 12/17/2022] Open
Abstract
Members of the glutathione S-transferase superfamily can protect organisms against oxidative stress. In this study, we characterized an omega glutathione S-transferase from Spodoptera exigua (SeGSTo). The SeGSTo gene contains an open reading frame (ORF) of 744 nucleotides encoding a 248-amino acid polypeptide. The predicted molecular mass and isoelectric point of SeGSTo are 29007 Da and 7.74, respectively. Multiple amino acid sequence alignment analysis shows that the SeGSTo sequence is closely related to the class 4 GSTo of Bombyx mori BmGSTo4 (77 % protein sequence similarity). Homologous modeling and molecular docking reveal that Cys35 may play an essential role in the catalytic process. Additionally, the phylogenetic tree indicates that SeGSTo belongs to the omega group of the GST superfamily. During S. exigua development, SeGSTo is expressed in the midgut of the fifth instar larval stage, but not in the epidermis or fat body. Identification of recombinant SeGSTo via SDS-PAGE and Western blot shows that its molecular mass is 30 kDa. The recombinant SeGSTo was able to protect super-coiled DNA from damage in a metal-catalyzed oxidation (MCO) system and catalyze the 1-chloro-2,4-dinitrobenzene (CDNB), but not 1,2-dichloro-4-nitrobenzene (DCNB), 4-nitrophenethyl bromide (4-NPB), or 4-nitrobenzyl chloride (4-NBC). The optimal reaction pH and temperature were 8 and 50 °C, respectively, in the catalysis of CDNB by recombinant SeGSTo. The mRNA expression of SeGSTo was up-regulated by various oxidative stresses, such as CdCl2, CuSO4, and isoprocarb, and the catalytic activity of recombinant SeGSTo was noticeably inhibited by heavy metals (Cu(2+) and Cd(2+)) and various pesticides. Taken together, these results indicate that SeGSTo plays an important role in the antioxidation and detoxification of pesticides.
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Affiliation(s)
- Pengfei Xu
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
| | - Ningning Han
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
| | - Tinghao Kang
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
| | - Sha Zhan
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
| | - Kwang Sik Lee
- College of Natural Resources and Life Science, Dong-A University, Busan, 604-714, Republic of Korea
| | - Byung Rae Jin
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
- College of Natural Resources and Life Science, Dong-A University, Busan, 604-714, Republic of Korea
| | - Jianhong Li
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
| | - Hu Wan
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China.
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21
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Zhu KY. Preface to the Special Issue: Insecticide Toxicology in China. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2016; 132:1-2. [PMID: 27521906 DOI: 10.1016/j.pestbp.2016.07.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Affiliation(s)
- Kun Yan Zhu
- Department of Entomology, Kansas State University, Manhattan, Kansas 66506.
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