1
|
Arredondo J, Aguirre-Medina JF, Meza-Hernández JS, Cancino J, Díaz-Fleischer F. Accelerating sexual maturation of male Anastrepha ludens (Diptera: Tephritidae) fruit flies by adding two juvenile hormone analogues. Pest Manag Sci 2024; 80:1367-1371. [PMID: 37961838 DOI: 10.1002/ps.7867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 09/28/2023] [Accepted: 11/14/2023] [Indexed: 11/15/2023]
Abstract
BACKGROUND Improving the mating competitiveness and survival of sterile males are direct means to increase the effectiveness of the sterile insect technique (SIT). Some insecticide growth regulators, such as the juvenile hormone analogue (JHA) methoprene, have been used to improve the mating competitiveness of male tephritid flies by reducing their sexual maturation period. However, the application of methoprene reduces fly resistance to stress and decreases survival. Here, we compared the effects of methoprene and pyriproxyfen (PPF), another JHA, in Anastrepha ludens males. PPF is an insect growth regulator that exhibits higher negative effects on the larval molting process than methoprene or natural juvenile hormone. Both compounds were administered at two doses (0.05% and 0.10%) via the male diet immediately after emergence. RESULTS Our results show that both PPF and methoprene reduced male sexual maturation. However, PPF-treated males exhibited a shorter maturation period and obtained more matings at a given age than methoprene-treated males. No significant differences were observed between the two PPF doses tested (0.05% and 0.10%). Male survival was equally reduced by the two compounds. CONCLUSION Our results demonstrate that PPF accelerated sexual development without reducing the mating propensity of sterile male flies and can be used as a suitable alternative for methoprene. © 2023 Society of Chemical Industry.
Collapse
Affiliation(s)
- José Arredondo
- Facultad de Ciencias Agronómicas Campus V, Universidad Autónoma de Chiapas, Villaflores, Mexico
| | - Juan F Aguirre-Medina
- Facultad de Ciencias Agrícolas Campus IV, Universidad Autónoma de Chiapas, Entronque carretera costera y Huehuetan Pueblo, Huehuetán, Mexico
| | | | - Jorge Cancino
- Programa Moscafrut, SADER-SENASICA, Metapa de Domínguez, Mexico
| | | |
Collapse
|
2
|
Bai B, Zhang SP, Li YT, Gao P, Yang XQ. Quercetin stimulates an accelerated burst of oviposition-based reproductive strategy in codling moth controlled by juvenile hormone signaling pathway. Sci Total Environ 2024; 913:169643. [PMID: 38159769 DOI: 10.1016/j.scitotenv.2023.169643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 12/11/2023] [Accepted: 12/22/2023] [Indexed: 01/03/2024]
Abstract
The advantageous characteristics of invasive pests, particularly their ability to reproduce and adapt to the environment, have been observed. However, it remains unclear what specific inherent superiority enables fruit pests to successfully invade and dominate in interactions with other species. In this study, we report that Cydia pomonella (Linnaeus), a notorious invasive pest of pome fruits and walnuts globally, employs unique reproductive strategies in response to quercetin, a plant compound in host fruits. By monitoring adult dynamics and fruit infestation rates, we observed a competitive relationship between C. pomonella and the native species Grapholita molesta (Busck). C. pomonella was able to occupy vacant niches to ensure its population growth. We also found that quercetin had different effects on the reproductive capacity and population growth of C. pomonella and G. molesta. While quercetin stimulated the fecundity and population growth of G. molesta, it inhibited C. pomonella. However, C. pomonella was able to rapidly increase its population after exposure to quercetin by adopting an 'accelerated burst' of oviposition strategy, with each individual making a greater reproductive contribution compared to the control. We further demonstrated that the effect of quercetin on oviposition is regulated by the juvenile hormone (JH) signaling pathway in C. pomonella, allowing it to prioritize survival. The enhanced reproductive fitness of G. molesta in response to quercetin is attributed to the regulation of JH titers and key genes such as Met and Kr-h1, which in turn up-regulate reproduction-related genes Vg and VgR. In contrast, C. pomonella is inhibited. These findings shed light on the mechanisms interspecific competition and help to improve our understanding of the global spread of C. pomonella, which can be attributed to its inherent superiority in terms of reproductive strategy.
Collapse
Affiliation(s)
- Bing Bai
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, Liaoning, China; Key Laboratory of Economical and Applied Entomology of Liaoning Province, Shenyang 110866, Liaoning, China; Key Laboratory of Major Agricultural Invasion Biological Monitoring and Control, Shenyang 110866, Liaoning, China
| | - Shi-Pan Zhang
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, Liaoning, China; Key Laboratory of Economical and Applied Entomology of Liaoning Province, Shenyang 110866, Liaoning, China; Key Laboratory of Major Agricultural Invasion Biological Monitoring and Control, Shenyang 110866, Liaoning, China
| | - Yu-Ting Li
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, Liaoning, China; Key Laboratory of Economical and Applied Entomology of Liaoning Province, Shenyang 110866, Liaoning, China; Key Laboratory of Major Agricultural Invasion Biological Monitoring and Control, Shenyang 110866, Liaoning, China
| | - Ping Gao
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, Liaoning, China; Key Laboratory of Economical and Applied Entomology of Liaoning Province, Shenyang 110866, Liaoning, China; Key Laboratory of Major Agricultural Invasion Biological Monitoring and Control, Shenyang 110866, Liaoning, China
| | - Xue-Qing Yang
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, Liaoning, China; Key Laboratory of Economical and Applied Entomology of Liaoning Province, Shenyang 110866, Liaoning, China; Key Laboratory of Major Agricultural Invasion Biological Monitoring and Control, Shenyang 110866, Liaoning, China.
| |
Collapse
|
3
|
Zhou Y, Zhang MX, Sun M, Wan LS, Chen JS, Zhang ZX. Effects of the Insect Growth Regulators Azadirachtin, Pyriproxyfen, and Tebufenozide on the Fatty Acid Metabolome of Bactrocera Dorsalis Larvae. J Agric Food Chem 2024; 72:1462-1472. [PMID: 38197605 DOI: 10.1021/acs.jafc.3c07153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2024]
Abstract
Insects' lipids, including fatty acids, as the second largest constituents in insects, play a variety of fundamental and vital functions. However, there is a lack of reports on the effects of insect growth regulators on fatty acid profiles and metabolic mechanisms. Therefore, in this study, a comparative study of three growth regulators, azadirachtin, pyriproxyfen, and tebufenozide, on fatty acids was carried out using a targeted metabolomics approach to fill this gap. The results showed that when exposed to azadirachtin, pyriproxyfen, and tebufenozide, there were 14, 17, and 11 differentially regulated fatty acids, respectively. The pathway of biosynthesis of unsaturated fatty acids was the common shared pathway, while fatty acid biosynthesis and linoleic acid metabolism were the specific pathways affected by the 3 insect growth regulators. Therefore, the results could be helpful to deepen the effects of azadirachtin and insect growth regulators on terrestrial insects.
Collapse
Affiliation(s)
- You Zhou
- College of Biology and Food Engineering, Chongqing Three Gorges University, Chongqing 404100, China
- Key Laboratory of Natural Pesticide and Chemical Biology of the Ministry of Education, South China Agricultural University, Guangzhou 510642, China
| | - Min Xing Zhang
- College of Agriculture and Forestry Science and Technology, Chongqing Three Gorges Vocational College, Chongqing 404155, China
| | - Miao Sun
- College of Biology and Food Engineering, Chongqing Three Gorges University, Chongqing 404100, China
| | - Lu Sheng Wan
- College of Biology and Food Engineering, Chongqing Three Gorges University, Chongqing 404100, China
| | - Jing Sheng Chen
- College of Biology and Food Engineering, Chongqing Three Gorges University, Chongqing 404100, China
| | - Zhi Xiang Zhang
- Key Laboratory of Natural Pesticide and Chemical Biology of the Ministry of Education, South China Agricultural University, Guangzhou 510642, China
| |
Collapse
|
4
|
Saito M, Fujimoto S, Kawasaki H. Ecdysone and gene expressions for chromatin remodeling, histone modification, and Broad Complex in relation to pupal commitment in Bombyx mori. Arch Insect Biochem Physiol 2024; 115:e22076. [PMID: 38288490 DOI: 10.1002/arch.22076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 11/28/2023] [Accepted: 12/08/2023] [Indexed: 02/01/2024]
Abstract
In the present study, we tried to clarify when and how pupal commitment (PT) better to use PC occurs and what is involved in the PT of Bombyx mori. To clarify this, we examined the responsiveness of a wing disc to ecdysone, referring to metamorphosis-related BR-C, development-related Myc and Wnt, and chromatin remodeling-related genes at around the predicted PT stage of the Bombyx wing disc. Wing disc responsiveness to juvenile hormone (JH) and ecdysone was examined using Methoprene and 20-hydroxyecdysone (20E) in vitro. The body weight of B. mori increased after the last larval ecdysis, peaked at Day 5 of the fifth larval instar (D5L5), and then decreased. The responsiveness of the wing disc to JH decreased after the last larval ecdysis up to D3L5. Bmbr-c (the Broad Complex of B. mori) showed enhanced expression in D4L5 wing discs with 20E treatment. Some chromatin remodeler and histone modifier genes (Bmsnr1, Bmutx, and Bmtip60) showed upregulation after being cultured with 20E in D4L5 wing discs. A low concentration of 20E is suggested to induce responsiveness to 20E in D4L5 wing discs. Bmbr-c, Bmsnr1, Bmutx, and Bmtip60 were upregulated after being cultured with a low concentration of 20E in D4L5 wing discs. The expression of Bmmyc and Bmwnt1 did not show a change after being cultured with or without 20E in D4L5 wing discs, while enhanced expression was observed with 20E in D5L5 wing discs. From the present results, we concluded that PT of the wing disc of B. mori occurred beginning on D4L5 with the secretion of low concentrations of ecdysteroids. Bmsnr1, Bmutx, Bmtip60, and BR-C are also involved.
Collapse
Affiliation(s)
- Maki Saito
- Department of Bioproductive Science, Faculty of Agriculture, Takasaki University of Health and Welfare, Gunma, Japan
| | - Shota Fujimoto
- Department of Bioproductive Science, Faculty of Agriculture, Takasaki University of Health and Welfare, Gunma, Japan
| | - Hideki Kawasaki
- Department of Bioproductive Science, Faculty of Agriculture, Takasaki University of Health and Welfare, Gunma, Japan
- Faculty of Agriculture, Utsunomiya University, Tochigi, Japan
| |
Collapse
|
5
|
Hu H, Yin X, Pang S, Jiang Y, Weng Q, Hu Q, Wang J. Mechanism of destruxin a inhibits juvenile hormone binding protein transporting juvenile hormone to affect insect growth. Pestic Biochem Physiol 2023; 197:105654. [PMID: 38072529 DOI: 10.1016/j.pestbp.2023.105654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 09/22/2023] [Accepted: 10/17/2023] [Indexed: 12/18/2023]
Abstract
Destruxin A, a non-ribosomal peptide toxin produced by Metarhizium, exhibits potent insecticidal activity by targeting various tissues, organs, and cells of insects. Our previous research has revealed that DA possesses the ability to bind to multiple proteins. In this study, we aimed to identify the most sensitive binding proteins of DA and investigate the physiological processes in which DA regulated. Through RNAi technology, we screened 22 binding proteins of DA in silkworm hemolymph. Among them, the juvenile hormone binding protein (JHBP), a hormone transport protein crucial for growth and development regulation, exhibited the highest sensitivity to DA. Subsequent experiments demonstrated that DA could inhibit the body weight gain of silkworm larvae, accelerate the pupation occurrence, and modulate the content of free juvenile hormone (JH) in the hemolymph. We also observed that DA could induce conformational changes in both the JHBP and the JHBP-JH binding complex. Notably, at low dosage, DA influenced the binding of JHBP to JH, while at high dosage, it irreversibly affected the binding of JHBP to JH. Molecular docking and point-mutant experiments suggested that DA might affect the N-arm of JHBP, which is responsible for JH binding. Additionally, we discovered that JHBP is widely distributed in various tissues of the silkworm, including the epidermis, gut, fat body, Malpighian tubule, gonad, muscle, trachea, and hemocyte. This study provides novel insights into the insecticidal mechanism of DA and enhances our understanding of the pathogenic process of Metarhizium.
Collapse
Affiliation(s)
- Hongwang Hu
- College of Plant Protection, South China Agricultural University, Guangzhou 510642, China.
| | - Xuyu Yin
- College of Plant Protection, South China Agricultural University, Guangzhou 510642, China.
| | - Suyun Pang
- College of Plant Protection, South China Agricultural University, Guangzhou 510642, China.
| | - Yali Jiang
- College of Plant Protection, South China Agricultural University, Guangzhou 510642, China.
| | - Qunfang Weng
- College of Plant Protection, South China Agricultural University, Guangzhou 510642, China.
| | - Qiongbo Hu
- College of Plant Protection, South China Agricultural University, Guangzhou 510642, China.
| | - Jingjing Wang
- College of Plant Protection, South China Agricultural University, Guangzhou 510642, China; College of Horticulture, South China Agricultural University, Guangzhou 510642, China.
| |
Collapse
|
6
|
Furuta K, Yamada N, Kayukawa T. Synthesis of 1,4-benzodioxan derivatives and the evaluation of their biological activity as a novel juvenile hormone signaling inhibitor. Pest Manag Sci 2023; 79:5341-5348. [PMID: 37611118 DOI: 10.1002/ps.7744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 08/15/2023] [Accepted: 08/23/2023] [Indexed: 08/25/2023]
Abstract
BACKGROUND Juvenile hormone (JH) signaling inhibitors may be used as insect growth regulators because of their ability to control metamorphosis and reproduction in insects by regulating the action of JH. RESULTS We identified ethyl (E)-3-(4-{[7- (4-methoxycarbonylbenzyloxy)-1,4-benzodioxan-6-yl]methyl}phenyl)prop-2-enoate (EMBP) and observed its strong precocious metamorphosis-inducing activity against silkworm larvae. To further elucidate its mechanism of action, we investigated the effect of EMBP on the JH-mediated signaling pathway in vitro and in vivo. In a reporter assay using a Bombyx mori cell line, EMBP strongly suppressed the induction of reporter gene expression by Juvenile hormone I (JH I) in a concentration-dependent manner. A parallel rightward shift was observed in the dose-response curve of JH I after treatment with EMBP, indicating that EMBP competitively inhibited JH. Moreover, we monitored developmental changes in the JH-responsive gene, Krüppel homolog 1 (Kr-h1), and ecdysone-responsive gene, Broad-Complex (BRC), in EMBP-treated silkworm larvae. EMBP suppressed only the expression of Kr-h1 in third-instar larvae. CONCLUSION Our results demonstrated that EMBP specifically regulates the JH-mediated Kr-h1 signaling pathway. EMBP could be used as a lead compound in the development of new insect growth regulators. © 2023 Society of Chemical Industry.
Collapse
Affiliation(s)
- Kenjiro Furuta
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization, Tsukuba, Japan
| | - Naoko Yamada
- Department of Life Science and Biotechnology, Shimane University, Matsue, Japan
| | - Takumi Kayukawa
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization, Tsukuba, Japan
| |
Collapse
|
7
|
Cao W, Zhang F, Li H, Zhang Y, Zhang Y, Zhang W, Guo X, Dong L, Li H, Zeng D, Li X, Yang X. A short neuropeptide F analog (sNPF), III-2 may particularly regulate juvenile hormone III to influence Spodoptera frugiperda metamorphosis and development. Pestic Biochem Physiol 2023; 197:105653. [PMID: 38072528 DOI: 10.1016/j.pestbp.2023.105653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Revised: 10/12/2023] [Accepted: 10/16/2023] [Indexed: 12/18/2023]
Abstract
Allatostatin (AS) or Allatotropin (AT) is a class of insect short neuropeptide F (sNPF) that affects insect growth and development by inhibiting or promote the synthesis of juvenile hormone (JH) in different insects. III-2 is a novel sNPF analog derived from a group of nitroaromatic groups connected by different amino acids. In this study, we found that III-2 showed high insecticidal activity against S. frugiperda larvae with a LC50 of 18.7 mg L-1. As demonstrated by ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS), III-2 particularly facilitated JH III and hindered 20E synthesis in S. frugiperda. The results of RNA-Seq and quantitative real-time polymerase chain reaction (qPCR) showed that III-2 treatment promoted the expression of key genes such as SfCYP15C1 in JH synthesis pathway and inhibited the expression of SfCYP314A1 and other genes in the 20E synthetic pathway. Significant differences were also observed in the expression of the genes related to cuticle formation. We report for the first time that sNPF compounds specifically interfere with the synthesis and secretion of a certain JH in insects, thus affecting the ecdysis and growth of insects, and leading to death. This study may provide a new plant conservation concept for us to seek the targeted control of certain insects based on specific interference with different JH.
Collapse
Affiliation(s)
- Wenjing Cao
- Guangxi Key Laboratory of Agric-Environment and Agric-products Safety, Guangxi University, Nanning, Guangxi 530004, China
| | - Fu Zhang
- Guangxi Key Laboratory of Agric-Environment and Agric-products Safety, Guangxi University, Nanning, Guangxi 530004, China
| | - Haolin Li
- Guangxi Key Laboratory of Agric-Environment and Agric-products Safety, Guangxi University, Nanning, Guangxi 530004, China
| | - Yimeng Zhang
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
| | - Yongheng Zhang
- Guangxi Key Laboratory of Agric-Environment and Agric-products Safety, Guangxi University, Nanning, Guangxi 530004, China
| | - Wenjie Zhang
- Guangxi Key Laboratory of Agric-Environment and Agric-products Safety, Guangxi University, Nanning, Guangxi 530004, China
| | - Xiaxia Guo
- Guangxi Key Laboratory of Agric-Environment and Agric-products Safety, Guangxi University, Nanning, Guangxi 530004, China
| | - Linxi Dong
- Guangxi Key Laboratory of Agric-Environment and Agric-products Safety, Guangxi University, Nanning, Guangxi 530004, China
| | - Honghong Li
- Guangxi Key Laboratory of Agric-Environment and Agric-products Safety, Guangxi University, Nanning, Guangxi 530004, China
| | - Dongqiang Zeng
- Guangxi Key Laboratory of Agric-Environment and Agric-products Safety, Guangxi University, Nanning, Guangxi 530004, China
| | - Xuesheng Li
- Guangxi Key Laboratory of Agric-Environment and Agric-products Safety, Guangxi University, Nanning, Guangxi 530004, China.
| | - Xinling Yang
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China.
| |
Collapse
|
8
|
Su T, Yu JS, Zhang Y, Qian X, Su H. Comparative bioactivity of S-methoprene and novel S-methobutene against mosquitoes (Diptera: Culicidae). J Med Entomol 2023; 60:1357-1363. [PMID: 37616574 DOI: 10.1093/jme/tjad110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 07/12/2023] [Accepted: 07/27/2023] [Indexed: 08/26/2023]
Abstract
Mosquitoes and mosquito-borne illnesses significantly impact public health and human well-being. To address this concern, environmentally compatible larvicides have become a critical component of integrated mosquito management. However, the number of available larvicides is at a historical low. Currently, larvicides that harness microbials and insect growth regulators account for most products. Screening of new active ingredients (AIs) or improvement of existing AIs is thus necessary to augment the capacity for mosquito control. S-methoprene possesses a similar molecular structure and identical function to mosquito juvenile hormone and has been one of the main targets for research and development. The efficacy and safety of S-methoprene have been well documented since the late 1960s, and numerous products have been commercialized to combat pests of economic importance. However, S-methoprene is vulnerable to environmental factors that lead to its degradation, which has created challenges in formulation development, particularly where extended efficacy is desired. A derivative of S-methoprene, namely S-methobutene, with molecular modification has become available. This derivative has demonstrated an enhanced activity of inhibition of emergence (IE) against species across the Aedes, Anopheles, and Culex genera at IE10, IE50, and IE90. Furthermore, S-methobutene consistently outperformed S-methoprene during a 120-day aging process against the southern house mosquito Cx. quinquefasciatus, where the IE% in S-methobutene was significantly higher than that in S-methoprene on most aging intervals. The former had significantly longer residual activity than the latter. The potential of S-methobutene for further development and application is discussed in consideration of its enhanced activity and stability.
Collapse
Affiliation(s)
- Tianyun Su
- EcoZone International LLC, Riverside, CA 92506, USA
| | - Jin-Sheng Yu
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
| | - Ying Zhang
- Shanghai Key Laboratory for Urban Ecological Processes and Eco-Restoration, Institute of Eco-Chongming, School of Ecological and Environmental Science, East China Normal University, Shanghai 200241, China
| | - Xuhong Qian
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
| | - Heng Su
- Synergetica International Inc., Marlboro, NJ 07746, USA
| |
Collapse
|
9
|
Li G, Li Y, He C, Wei Y, Cai K, Lu Q, Liu X, Zhu Y, Xu K. The promoting effects of pyriproxyfen on autophagy and apoptosis in silk glands of non-target insect silkworm, Bombyx mori. Pestic Biochem Physiol 2023; 196:105586. [PMID: 37945223 DOI: 10.1016/j.pestbp.2023.105586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 08/12/2023] [Accepted: 08/23/2023] [Indexed: 11/12/2023]
Abstract
Pyriproxyfen is a juvenile hormone analogue. The physiological effects of its low-concentration drift during the process of controlling agricultural and forestry pests on non-target organisms in the ecological environment are unpredictable, especially the effects on organs that play a key role in biological function are worthy of attention. The silk gland is an important organ for silk-secreting insects. Herein, we studied the effects of trace pyriproxyfen on autophagy and apoptosis of the silk gland in the lepidopteran model insect, Bombyx mori (silkworm). After treating fifth instar silkworm larvae with pyriproxyfen for 24 h, we found significant shrinkage, vacuolization, and fragmentation in the posterior silk gland (PSG). In addition, the results of autophagy-related genes of ATG8 and TUNEL assay also demonstrated that autophagy and apoptosis in the PSG of the silkworm was induced by pyriproxyfen. RNA-Seq results showed that pyriproxyfen treatment resulted in the activation of juvenile hormone signaling pathway genes and inhibition of 20-hydroxyecdysone (20E) signaling pathway genes. Among the 1808 significantly differentially expressed genes, 796 were upregulated and 1012 were downregulated. Among them, 30 genes were identified for autophagy-related signaling pathways, such as NOD-like receptor signaling pathway and mTOR signaling pathway, and 30 genes were identified for apoptosis-related signaling pathways, such as P53 signaling pathway and TNF signaling pathway. Further qRT-PCR and in vitro gland culture studies showed that the autophagy-related genes Atg5, Atg6, Atg12, Atg16 and the apoptosis-related genes Aif, Dronc, Dredd, and Caspase1 were responsive to the treatment of pyriproxyfen, with transcription levels up-regulated from 24 to 72 h. In addition, ATG5, ATG6, and Dronc genes had a more direct response to pyriproxyfen treatment. These results suggested that pyriproxyfen treatment could disrupt the hormone regulation in silkworms, promoting autophagy and apoptosis in the PSG. This study provides more evidence for the research on the damage of juvenile hormone analogues to non-target organisms or organs in the environment, and provides reference information for the scientific and rational use of juvenile hormone pesticides.
Collapse
Affiliation(s)
- Guoli Li
- College of Agriculture, Guangxi University, Nanning, Guangxi 530004, PR China
| | - Yizhe Li
- College of Agriculture, Guangxi University, Nanning, Guangxi 530004, PR China
| | - Chunhui He
- College of Agriculture, Guangxi University, Nanning, Guangxi 530004, PR China
| | - Yuting Wei
- College of Agriculture, Guangxi University, Nanning, Guangxi 530004, PR China
| | - Kunpei Cai
- College of Agriculture, Guangxi University, Nanning, Guangxi 530004, PR China
| | - Qingyu Lu
- College of Animal Sciences, Zhejiang University, Hangzhou 310058, PR China
| | - Xuebin Liu
- College of Agriculture, Guangxi University, Nanning, Guangxi 530004, PR China
| | - Yizhou Zhu
- College of Agriculture, Guangxi University, Nanning, Guangxi 530004, PR China
| | - Kaizun Xu
- College of Agriculture, Guangxi University, Nanning, Guangxi 530004, PR China; Guangxi Key Laboratory for Agro-Environment and Agric-Product Safety, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, Guangxi 530004, PR China; Sericulture Institute of Guangxi University, Nanning, Guangxi 530004, PR China.
| |
Collapse
|
10
|
Starkey J, Hawkings C, Tamborindeguy C. Influence of juvenile hormone analog on behavior in the red imported fire ant, Solenopsis invicta. Sci Rep 2023; 13:14726. [PMID: 37679373 PMCID: PMC10485025 DOI: 10.1038/s41598-023-41540-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Accepted: 08/28/2023] [Indexed: 09/09/2023] Open
Abstract
Division of labor is a hallmark characteristic of social insect colonies. While it is understood that worker differentiation is regulated through either the queen or her brood, the understanding of the physiology behind task regulation varies within social species. Studies in eusocial insects have shown that juvenile hormone (JH) is associated with division of labor and the onset of foraging tasks. Although, outside of a few key species, this interaction has yet to be elucidated in the red imported fire ant, Solenopsis invicta. In this study, we evaluated the role of a JH analog, S-hydroprene in worker task transition in Solenopsis invicta. S-hydroprene was applied to nurses to observe behavioral changes. S-hyroprene application to nurses did not affect phototaxis, but there was a shift in behavior from internal, nest-based behaviors to external, foraging-based behaviors. These results show that JH may be implicated in worker task transition in S. invicta and may function similarly as it does in other eusocial insects.
Collapse
Affiliation(s)
- Jesse Starkey
- Department of Entomology, Texas A&M University, 412 Heep Center, College Station, TX, 77843, USA
| | - Chloe Hawkings
- Department of Entomology, Texas A&M University, 412 Heep Center, College Station, TX, 77843, USA
- Department of Entomology, Rutgers University, Thompson Hall, New Brunswick, NJ, 08901, USA
| | - Cecilia Tamborindeguy
- Department of Entomology, Texas A&M University, 412 Heep Center, College Station, TX, 77843, USA.
| |
Collapse
|
11
|
Dai H, Liu B, Yang L, Yao Y, Liu M, Xiao W, Li S, Ji R, Sun Y. Investigating the Regulatory Mechanism of the Sesquiterpenol Nerolidol from a Plant on Juvenile Hormone-Related Genes in the Insect Spodoptera exigua. Int J Mol Sci 2023; 24:13330. [PMID: 37686136 PMCID: PMC10488281 DOI: 10.3390/ijms241713330] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 08/24/2023] [Accepted: 08/24/2023] [Indexed: 09/10/2023] Open
Abstract
Various plant species contain terpene secondary metabolites, which disrupt insect growth and development by affecting the activity of juvenile hormone-degrading enzymes, and the juvenile hormone (JH) titers maintained in insects. Nerolidol, a natural sesquiterpenol belonging to the terpenoid group, exhibits structural similarities to insect JHs. However, the impact of nerolidol on insect growth and development, as well as its underlying molecular mechanism, remains unclear. Here, the effects of nerolidol on Spodoptera exigua were investigated under treatment at various sub-lethal doses (4.0 mg/mL, 1.0 mg/mL, 0.25 mg/mL). We found that a higher dose (4.0 mg/mL) of nerolidol significantly impaired the normal growth, development, and population reproduction of S. exigua, although a relatively lower dose (0.25 mg/mL) of nerolidol had no significant effect on this growth and development. Combined transcriptome sequencing and gene family analysis further revealed that four juvenile hormone esterase (JHE)-family genes that are involved in juvenile hormone degradation were significantly altered in S. exigua larvae after nerolidol treatment (4.0 mg/mL). Interestingly, the juvenile hormone esterase-like (JHEL) gene Sexi006721, a critical element responsive to nerolidol stress, was closely linked with the significant augmentation of JHE activity and JH titer in S. exigua (R2 = 0.94, p < 0.01). Taken together, we speculate that nerolidol can function as an analog of JH by modulating the expression of the enzyme genes responsible for degrading JH, resulting in JH disorders and ultimately disrupting the development of insect larvae. This study ultimately provides a theoretical basis for the sustainable control of S. exigua in the field whilst proposing a new perspective for the development of novel biological pesticides.
Collapse
Affiliation(s)
- Hanyang Dai
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China; (H.D.); (B.L.)
| | - Baosheng Liu
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China; (H.D.); (B.L.)
| | - Lei Yang
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China; (H.D.); (B.L.)
| | - Yu Yao
- Key Laboratory for Conservation and Use of Important Biological Resources of Anhui Province, Anhui Provincial Key Laboratory of Molecular Enzymology and Mechanism of Major Diseases, College of Life Sciences, Anhui Normal University, Wuhu 241000, China
| | - Mengyun Liu
- Key Laboratory for Conservation and Use of Important Biological Resources of Anhui Province, Anhui Provincial Key Laboratory of Molecular Enzymology and Mechanism of Major Diseases, College of Life Sciences, Anhui Normal University, Wuhu 241000, China
| | - Wenqing Xiao
- Key Laboratory for Conservation and Use of Important Biological Resources of Anhui Province, Anhui Provincial Key Laboratory of Molecular Enzymology and Mechanism of Major Diseases, College of Life Sciences, Anhui Normal University, Wuhu 241000, China
| | - Shuai Li
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China; (H.D.); (B.L.)
| | - Rui Ji
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China; (H.D.); (B.L.)
- Key Laboratory for Conservation and Use of Important Biological Resources of Anhui Province, Anhui Provincial Key Laboratory of Molecular Enzymology and Mechanism of Major Diseases, College of Life Sciences, Anhui Normal University, Wuhu 241000, China
| | - Yang Sun
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China; (H.D.); (B.L.)
- Key Laboratory for Conservation and Use of Important Biological Resources of Anhui Province, Anhui Provincial Key Laboratory of Molecular Enzymology and Mechanism of Major Diseases, College of Life Sciences, Anhui Normal University, Wuhu 241000, China
| |
Collapse
|
12
|
Palli SR. Juvenile hormone receptor Methoprene tolerant: Functions and applications. Vitam Horm 2023; 123:619-644. [PMID: 37718000 DOI: 10.1016/bs.vh.2023.03.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/19/2023]
Abstract
During the past 15years, after confirming Methoprene tolerant (Met) as a juvenile hormone (JH) receptor, tremendous progress has been made in understanding the function of Met in supporting JH signal transduction. Met role in JH regulation of development, including metamorphosis, reproduction, diapause, cast differentiation, behavior, im`munity, sleep and epigenetic modifications, have been elucidated. Met's Heterodimeric partners involved in performing some of these functions were discovered. The availability of JH response elements (JHRE) and JH receptor allowed the development of screening assays in cell lines and yeast. These screening assays facilitated the identification of new chemicals that function as JH agonists and antagonists. These new chemicals and others that will likely be discovered in the near future by using JH receptor and JHRE will lead to highly effective species-specific environmentally friendly insecticides for controlling pests and disease vectors.
Collapse
Affiliation(s)
- Subba Reddy Palli
- Department of Entomology, College of Agriculture, Food and Environment, University of Kentucky, Lexington, KY, United States.
| |
Collapse
|
13
|
Li Z, Song J, Jiang G, Shang Y, Jiang Y, Zhang J, Xiao L, Chen M, Tang D, Tong X, Dai F. Juvenile hormone suppresses the FoxO-takeout axis to shorten longevity in male silkworm. Pestic Biochem Physiol 2023; 192:105388. [PMID: 37105617 DOI: 10.1016/j.pestbp.2023.105388] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 02/19/2023] [Accepted: 03/06/2023] [Indexed: 06/19/2023]
Abstract
Juvenile hormone (JH) plays a crucial endocrine regulatory role in insect metamorphosis, reproduction, and longevity in multiple organisms, such as flies, honeybees, and migratory monarch butterflies. However, the molecular mechanism of JH affecting longevity remains largely unknown. In this study, we showed that JH III and its analog methoprene shortened the survival days significantly in the adulthood of male silkworm. At the same time, the allatostatin, a neuropeptide that inhibits the secretion of JH by the corpora allata, could extend the survival days dramatically after adult eclosion in male silkmoth. Interestingly, a central pro-longevity FoxO transcription factor was reduced upon JH stimulation in silkworm individuals and BmN-SWU1 cells. Furthermore, the analysis of the upstream sequence of the FoxO gene identified a JH response element which suggested that FoxO might be regulated as a target of JH. Surprisingly, we identified a Bmtakeout (BmTO) gene that encodes a JH-binding protein and contains a FoxO response element. As expected, FoxO overexpression and knockdown up- and down-regulated the expression of BmTO respectively, indicating that BmTO functions as a FoxO target. BmTO overexpression could release the inhibitory effect of JH on the BmFoxO gene by reducing JH bioavailability to block its signal transduction. Collectively, these results may provide insights into the mechanism of the JH-FoxO-TO axis in aging research and pest control.
Collapse
Affiliation(s)
- Zhiquan Li
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory for Sericulture Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Sericulture, Textile and Biomass Sciences, Southwest University, Chongqing 400715, China
| | - Jiangbo Song
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory for Sericulture Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Sericulture, Textile and Biomass Sciences, Southwest University, Chongqing 400715, China
| | - Guihua Jiang
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory for Sericulture Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Sericulture, Textile and Biomass Sciences, Southwest University, Chongqing 400715, China
| | - Yunzhu Shang
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory for Sericulture Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Sericulture, Textile and Biomass Sciences, Southwest University, Chongqing 400715, China
| | - Yu Jiang
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory for Sericulture Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Sericulture, Textile and Biomass Sciences, Southwest University, Chongqing 400715, China
| | - Jianfei Zhang
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory for Sericulture Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Sericulture, Textile and Biomass Sciences, Southwest University, Chongqing 400715, China
| | - Li Xiao
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory for Sericulture Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Sericulture, Textile and Biomass Sciences, Southwest University, Chongqing 400715, China
| | - Min Chen
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory for Sericulture Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Sericulture, Textile and Biomass Sciences, Southwest University, Chongqing 400715, China
| | - Dongmei Tang
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory for Sericulture Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Sericulture, Textile and Biomass Sciences, Southwest University, Chongqing 400715, China
| | - Xiaoling Tong
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory for Sericulture Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Sericulture, Textile and Biomass Sciences, Southwest University, Chongqing 400715, China
| | - Fangyin Dai
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory for Sericulture Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Sericulture, Textile and Biomass Sciences, Southwest University, Chongqing 400715, China.
| |
Collapse
|
14
|
Guo B, Jiang B, Wang C, Jin X, Wang L, Yang Z, Luo S, Yang Q, Zhang L, Yang X. A Potential Lead for Insect Growth Regulator: Design, Synthesis, and Biological Activity Evaluation of Novel Hexacyclic Pyrazolamide Derivatives. Molecules 2023; 28:3741. [PMID: 37175151 PMCID: PMC10179764 DOI: 10.3390/molecules28093741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 04/22/2023] [Accepted: 04/25/2023] [Indexed: 05/15/2023] Open
Abstract
Ecdysone receptor (EcR) and chitinase play a critical role in the molting stage of insect pests. Each of them is considered a promising target for the development of novel insect growth regulators (IGRs). In the present paper, a total of 24 (23 novel) hexacyclic pyrazolamide derivatives were designed and synthesized by reducing the heptacycle and inserting small flexible linkers on the basis of the previously discovered dual-target compound D-27 acting simultaneously on EcR and Ostrinia furnacalis chitinase (OfChtI). Their insecticidal activities against Plutella xylostella, Spodoptera frugiperda, and Ostrinia furnacalis larvae were evaluated. The results revealed that the insecticidal activity was not significantly enhanced when the heptacycle on the pyrazole ring was reduced to a hexacycle. However, the insertion of an additional methylene spacer between the substituted phenyl ring and the amide bond can improve the insecticidal activity. Among the derivatives, the most potent compound, 6j, exhibited promising insecticidal activities against P. xylostella and S. frugiperda. Further protein binding assays and molecular docking indicated that 6j could target both EcR and OfChtI, and is a potential lead compound for IGRs. The present work provides valuable clues for the development of new dual-target IGRs.
Collapse
Affiliation(s)
- Bingbo Guo
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
| | - Biaobiao Jiang
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
| | - Chunying Wang
- Engineering Research Center of Plant Growth Regulator, Ministry of Education, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Xiaoyu Jin
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
| | - Liuyang Wang
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
| | - Zhaokai Yang
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
| | - Shihui Luo
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
| | - Qing Yang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Li Zhang
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
| | - Xinling Yang
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
| |
Collapse
|
15
|
Noelia FM, Clara SA, Graciela M, Inés SM. Toxicity assessment of two IGR insecticides on eggs and larvae of the ladybird Eriopis connexa. Pest Manag Sci 2023; 79:1316-1323. [PMID: 36411496 DOI: 10.1002/ps.7293] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 10/28/2022] [Accepted: 11/22/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND Eriopis connexa is an important predator in the Neotropical region, associated with pests of economic relevance on horticultural crops in Argentina. The use of broad-spectrum insecticides could reduce the biodiversity of these natural enemies in agroecosystems and put at risk its conservation. New, selective "risk reduced" insecticides could be an alternative to conventional chemical control to promote sustainable agriculture. The goal of this work was to assess the lethal and sublethal effects of two insect growth regulator (IGR) insecticides on eggs and two larval instars of E. connexa exposed to insecticides. RESULTS Pyriproxyfen and cypermethrin significantly affected egg hatching by 28.8% and 70.4%, respectively. Pyriproxyfen reduced the survival of larvae that emerged by ≈52% from Day (D3)3 after hatching and caused the lengthening of developmental time for both larval and pupal stages. By contrast, teflubenzuron did not reduce hatching and survival but shortened the developmental time of the pupae stage. Cypermethrin reduced the survival of 2nd (L2 ) and 4th (L4 ) larval instars by 36.4% and 74.6%, respectively, and lengthened the development time of L2 . Pyriproxyfen lengthened the development time of L4 and reduced the fecundity and fertility of females. Teflubenzuron reduced survival of L2 and L4 larval instars by 46.9% and 28.6%, respectively, and lengthened the total development time for the larval stage. In addition, teflubenzuron reduced the fecundity and fertility of females. CONCLUSIONS Both eggs and larvae were susceptible to exposure to IGR, showing lethal and sublethal effects. This study highlights, once again, the higher toxicity of cypermethrin to E. connexa. The toxicity of both IGR insecticides could impair the performance of E. connexa as a biological control agent in agroecosystems. © 2022 Society of Chemical Industry.
Collapse
Affiliation(s)
- Fogel Marilina Noelia
- Laboratorio de Ecotoxicología: Plaguicidas y Control Biológico, Centro de Estudios Parasitológicos y de Vectores (CEPAVE-CONICET, UNLP, CICPBA), La Plata, Argentina
| | | | - Minardi Graciela
- Laboratorio de Metodología Estadística: Centro de Estudios Parasitológicos y de Vectores (CEPAVE-CONICET, UNLP, CICPBA), La Plata, Argentina
| | - Schneider Marcela Inés
- Laboratorio de Ecotoxicología: Plaguicidas y Control Biológico, Centro de Estudios Parasitológicos y de Vectores (CEPAVE-CONICET, UNLP, CICPBA), La Plata, Argentina
| |
Collapse
|
16
|
Aguilar P, Bourgeois T, Maria A, Couzi P, Demondion E, Bozzolan F, Gassias E, Force E, Debernard S. Methoprene-tolerant and Krüppel homolog 1 are actors of juvenile hormone-signaling controlling the development of male sexual behavior in the moth Agrotis ipsilon. Horm Behav 2023; 150:105330. [PMID: 36791650 DOI: 10.1016/j.yhbeh.2023.105330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 02/01/2023] [Accepted: 02/06/2023] [Indexed: 02/15/2023]
Abstract
In insects, juvenile hormone (JH) is critical for the orchestration of male reproductive maturation. For instance, in the male moth, Agrotis ipsilon, the behavioral response and the neuronal sensitivity within the primary olfactory centers, the antennal lobes (ALs), to the female-emitted sex pheromone increase with fertility during adulthood and the coordination between these events is governed by JH. However, the molecular basis of JH action in the development of sexual behavior remains largely unknown. Here, we show that the expression of the paralogous JH receptors, Methoprene-tolerant 1 and 2 (Met1, Met2) and of the JH-inducible transcription factor, Krüppel homolog 1 (Kr-h1) within ALs raised from the third day of adult life and this dynamic is correlated with increased behavioral responsiveness to sex pheromone. Met1-, Met2- and Kr-h1-depleted sexually mature males exhibited altered sex pheromone-guided orientation flight. Moreover, injection of JH-II into young males enhanced the behavioral response to sex pheromone with increased AL Met1, Met2 and Kr-h1 mRNA levels. By contrast, JH deficiency suppressed the behavioral response to sex pheromone coupled with reduced AL Met1, Met2 and Kr-h1 mRNA levels in allatectomized old males and these inhibitions were compensated by an injection of JH-II in operated males. Our results demonstrated that JH acts through Met-Kr-h1 signaling pathway operating in ALs, to promote the pheromone information processing and consequently the display of sexual behavior in synchronization with fertility to optimize male reproductive fitness. Thus, this study provides insights into the molecular mechanisms underlying the hormonal regulation of reproductive behavior in insects.
Collapse
Affiliation(s)
- Paleo Aguilar
- Institute of Biology, University of Madrid, Pozuelo de Alarcon, 28223 Madrid, Spain
| | - Thomas Bourgeois
- Sorbonne Université, INRA, CNRS, UPEC, IRD, Univ. P7, Institute of Ecology and Environmental Sciences of Paris, 78026 Versailles, France
| | - Annick Maria
- Sorbonne Université, INRA, CNRS, UPEC, IRD, Univ. P7, Institute of Ecology and Environmental Sciences of Paris, 75005 Paris, France
| | - Philippe Couzi
- Sorbonne Université, INRA, CNRS, UPEC, IRD, Univ. P7, Institute of Ecology and Environmental Sciences of Paris, 78026 Versailles, France
| | - Elodie Demondion
- Sorbonne Université, INRA, CNRS, UPEC, IRD, Univ. P7, Institute of Ecology and Environmental Sciences of Paris, 78026 Versailles, France
| | - Françoise Bozzolan
- Sorbonne Université, INRA, CNRS, UPEC, IRD, Univ. P7, Institute of Ecology and Environmental Sciences of Paris, 75005 Paris, France
| | - Edmundo Gassias
- Institute of Biology, University of Madrid, Pozuelo de Alarcon, 28223 Madrid, Spain
| | - Evan Force
- Sorbonne Université, INRA, CNRS, UPEC, IRD, Univ. P7, Institute of Ecology and Environmental Sciences of Paris, 75005 Paris, France
| | - Stéphane Debernard
- Sorbonne Université, INRA, CNRS, UPEC, IRD, Univ. P7, Institute of Ecology and Environmental Sciences of Paris, 75005 Paris, France.
| |
Collapse
|
17
|
Ebihara K, Niwa R. Compounds Inhibiting Noppera-bo, a Glutathione S-transferase Involved in Insect Ecdysteroid Biosynthesis: Novel Insect Growth Regulators. Biomolecules 2023; 13:biom13030461. [PMID: 36979396 PMCID: PMC10046418 DOI: 10.3390/biom13030461] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 02/20/2023] [Accepted: 02/28/2023] [Indexed: 03/06/2023] Open
Abstract
Glutathione S-transferases (GSTs) are conserved in a wide range of organisms, including insects. In 2014, an epsilon GST, known as Noppera-bo (Nobo), was shown to regulate the biosynthesis of ecdysteroid, the principal steroid hormone in insects. Studies on fruit flies, Drosophila melanogaster, and silkworms, Bombyx mori, demonstrated that loss-of-function mutants of nobo fail to synthesize ecdysteroid and die during development, consistent with the essential function of ecdysteroids in insect molting and metamorphosis. This genetic evidence suggests that chemical compounds that inhibit activity of Nobo could be insect growth regulators (IGRs) that kill insects by disrupting their molting and metamorphosis. In addition, because nobo is conserved only in Diptera and Lepidoptera, a Nobo inhibitor could be used to target IGRs in a narrow spectrum of insect taxa. Dipterans include mosquitoes, some of which are vectors of diseases such as malaria and dengue fever. Given that mosquito control is essential to reduce mosquito-borne diseases, new IGRs that specifically kill mosquito vectors are always in demand. We have addressed this issue by identifying and characterizing several chemical compounds that inhibit Nobo protein in both D. melanogaster and the yellow fever mosquito, Aedes aegypti. In this review, we summarize our findings from the search for Nobo inhibitors.
Collapse
Affiliation(s)
- Kana Ebihara
- Degree Programs in Life and Earth Sciences, Graduate School of Science and Technology, University of Tsukuba, Tennodai 1-1-1, Tsukuba 305-8572, Ibaraki, Japan
| | - Ryusuke Niwa
- Life Science Center for Survival Dynamics, Tsukuba Advanced Research Alliance (TARA), University of Tsukuba, Tennodai 1-1-1, Tsukuba 305-8577, Ibaraki, Japan
- Correspondence:
| |
Collapse
|
18
|
Yu Z, Shi J, Jiang X, Song Y, Du J, Zhao Z. Neuropeptide F regulates feeding via the juvenile hormone pathway in Ostrinia furnacalis larvae. Pest Manag Sci 2023; 79:1193-1203. [PMID: 36396604 DOI: 10.1002/ps.7289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 11/07/2022] [Accepted: 11/14/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND Feeding by pests is one of the most important reasons for reductions in agricultural crop yield. This study aimed to reveal how juvenile hormone (JH) participates in larval feeding regulation of the Asian corn borer Ostrinia furnacalis. RESULTS Larvae of O. furnacalis exhibit a daily circadian feeding rhythm, with a peak at ZT18 and a trough at ZT6 under both photoperiod (LD) and constant dark (DD) conditions, which may be eliminated by application of fenoxycarb, a JH active analogue. JH negatively regulates larval feeding as a downstream factor of neuropeptide F (NPF), in which knocking down JH increases larval feeding amount along with body weight and length. The production of JH in the brain-corpora cardiaca-corpora allata (brain-CC-CA) is regulated by brain NPF rather than gut NPF, which was demonstrated in Drosophila larvae through GAL4/UAS genetic analysis. In addition, feeding regulation of JH is closely related to energy homeostasis in the fat body by inhibiting energy storage and promoting degradation. The JH analogue fenoxycarb is an effective pesticide against O. furnacalis, controlling feeding and metabolism. CONCLUSION The brain NPF system regulates JH, with functions in food consumption, feeding rhythms, energy homeostasis and body size. This study provides an important basis for understanding the feeding mechanism and potential pest control of O. furnacalis. © 2022 Society of Chemical Industry.
Collapse
Affiliation(s)
- Zhuofan Yu
- Department of Entomology and MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing, 100193, China
| | - Jian Shi
- Department of Entomology and MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing, 100193, China
| | - Xuemin Jiang
- Department of Entomology and MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing, 100193, China
| | - Yu Song
- Department of Entomology and MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing, 100193, China
| | - Juan Du
- Department of Entomology and MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing, 100193, China
| | - Zhangwu Zhao
- Department of Entomology and MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing, 100193, China
| |
Collapse
|
19
|
Attarianfar M, Mikani A, Mehrabadi M. Fenoxycarb exposure affects antiviral immunity and HaNPV infection in the cotton bollworm, Helicoverpa armigera. Pest Manag Sci 2023; 79:1078-1085. [PMID: 36424349 DOI: 10.1002/ps.7301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 10/25/2022] [Accepted: 11/25/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND Application of insect growth regulators (IGR) is a good option for insect pest management because of their fewer adverse effects on humans and domestic animals. These compounds are capable of interfering with normal growth and development by mimicking the actions of hormones such as juvenile hormone (JH) or ecdysone. The effect of JH and its analogs on some aspects of insect immunity has been determined, yet their possible effects on antiviral immunity response has not been investigated yet. Considering the importance of antiviral response in viral replication, in this study the effects of the JH analog (JHA), fenoxycarb on the antiviral immunity pathway core genes [i.e. micro (mi)RNA, small interfering (si)RNA and apoptosis] of Helicoverpa armigera (Hubner) larvae were investigated. The effect of fenoxycarb on the susceptibility of the larvae to H. armigera nuclear polyhedrosis virus (HaNPV) also was assessed. RESULTS The results showed that the transcription level of miRNA (Dicer1, Ago1), siRNA (Dicer2, Ago2) and apoptosis (Caspase1, Caspase5) core genes in H. armigera larvae were decreased significantly after 24, 48 and 96 h feeding on a diet containing lethal and sublethal doses of fenoxycarb. Moreover, the mortality rate to HaNPV in the larvae treated with fenoxycarb increased compared to the control, leading to an increased replication of HaNPV. CONCLUSION Together, our results suggest that the antiviral immune system could be modulated by JHA and facilitate HaNPV replication in the larvae, increasing the mortality rate of the insect larvae. Understanding the effect of JHA on antiviral immunity is an important step toward the process of exploiting JHAs and viral pathogens to control insect pests. © 2022 Society of Chemical Industry.
Collapse
Affiliation(s)
- Marzieh Attarianfar
- Department of Entomology, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran
| | - Azam Mikani
- Department of Entomology, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran
| | - Mohammad Mehrabadi
- Department of Entomology, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran
| |
Collapse
|
20
|
Bonser CAR, Tamez C, White JC, Astete CE, Sabliov CM, Davis JA. Field applications of zein as a precise nanoscale delivery system for methoxyfenozide. J Insect Sci 2023; 23:8. [PMID: 36960889 PMCID: PMC10037269 DOI: 10.1093/jisesa/iead017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 03/01/2023] [Accepted: 03/10/2023] [Indexed: 06/18/2023]
Abstract
When insecticides are applied in the environment, much of the product does not reach the target pest. Biopolymeric nanoparticles as nanocarriers have the potential to improve insecticide efficacy by improving absorption, coverage, and permeability while protecting the insecticide active ingredient from abiotic conditions and extending efficacy through controlled release. We conducted a series of experiments using a biopolymeric nanoparticle synthesized from zein, a biodegradable maize protein, to compare efficacy of a nanodelivered hydrophobic insect growth regulator (methoxyfenozide) against a commercial formulation. Positively charged zein nanoparticles (empty and loaded with methoxyfenozide) were compared to the formulated product, Intrepid 2F, as a foliar spray in-field on soybean. Chrysodeixis includens (Walker) was used as a model and was fed sprayed soybean leaves to evaluate efficacy of the tested foliar products over time. A separate set of leaves was sampled to measure residue levels of methoxyfenozide (MFZ) over time following foliar application using QuEChERS extraction and high-resolution liquid chromatography-mass spectrometry. Regression analysis found no differences in mortality slopes between positively charged zein nanoparticles loaded with methoxyfenozide [(+)ZNP(MFZ)] and Intrepid 2F, suggesting comparable efficacy of the synthesized nanoparticles to a commercial product. Higher concentrations of MFZ were present in (+)ZNP(MFZ)-treated in leaf tissue at 3 d following spray when compared to Intrepid 2F. The multiyear study results demonstrate that nanoparticles loaded with MFZ are comparable to Intrepid 2F under field conditions, with potential short-term benefits.
Collapse
Affiliation(s)
| | - C Tamez
- Connecticut Agricultural Experiment Station, New Haven, CT 06511, USA
| | - J C White
- Connecticut Agricultural Experiment Station, New Haven, CT 06511, USA
| | - C E Astete
- Department of Biological and Agricultural Engineering, LSU Agricultural Center, 149 E. B. Doran Building, Baton Rouge, LA 70803, USA
| | - C M Sabliov
- Department of Biological and Agricultural Engineering, LSU Agricultural Center, 149 E. B. Doran Building, Baton Rouge, LA 70803, USA
| | - J A Davis
- Department of Entomology, LSU Agricultural Center, 404 Life Science Building, Baton Rouge, LA 70803, USA
| |
Collapse
|
21
|
Attarianfar M, Mikani A, Mehrabadi M. The endocrine disruptor, fenoxycarb modulates gut immunity and gut bacteria titer in the cotton bollworm, Helicoverpa armigera. Comp Biochem Physiol C Toxicol Pharmacol 2023; 264:109507. [PMID: 36368508 DOI: 10.1016/j.cbpc.2022.109507] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 11/02/2022] [Accepted: 11/03/2022] [Indexed: 11/09/2022]
Abstract
The endocrine system modulates several physiological functions such as development and metamorphosis in insects. The normal growth and development of insects is interfered with insect growth regulators (IGRs), which act as mimics of insect hormones like juvenile hormone (JH) and ecdysone hormone. The effects of JH and its analogs on systemic immunity have been identified. However the effect of these compounds on local gut immunity is largely unknown. In this study, the effects of JH analog fenoxycarb on the local gut immunity of Helicoverpa armigera, gut bacteria population, and their role in the pathogenicity of Bacillus thuringiensis (Bt) were analyzed. The results showed that feeding fenoxycarb causes a decrease in the transcription level of IMD (Relish and PGPR-LC), ROS (DUOX and SOD) related genes and antimicrobial peptides (AMPs), followed by an overpopulation of gut bacteria. The fenoxycarb-treated larvae showed higher susceptibility to Bt compared to the control larvae. Overall, these findings collectively suggest that JH analog affects local gut immunity and gut bacteria titer.
Collapse
Affiliation(s)
- Marzieh Attarianfar
- Department of Entomology, Faculty of Agriculture, Tarbiat Modares University, Tehran 14115-336, Iran. https://twitter.com/@attarianfar
| | - Azam Mikani
- Department of Entomology, Faculty of Agriculture, Tarbiat Modares University, Tehran 14115-336, Iran.
| | - Mohammad Mehrabadi
- Department of Entomology, Faculty of Agriculture, Tarbiat Modares University, Tehran 14115-336, Iran.
| |
Collapse
|
22
|
Yang M, Li G, Yu L, Du S, Jiang D, Chu X, Wang K, Wu S, Wang R, Zhang F, Hu X. Temperature and metal ions regulate larval diapause termination via the 20-hydroxyecdysone and juvenile hormone pathways in Monochamus alternatus. Pest Manag Sci 2023; 79:437-446. [PMID: 36177945 DOI: 10.1002/ps.7212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 08/30/2022] [Accepted: 09/30/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND Diapause allows insects to survive harsh environments, and its termination is crucial for their normal development after diapause. However, little is known about the regulatory pathways and signals involved in insect diapause termination. RESULTS We discovered that high temperature (25 °C) influenced larval diapause termination in Monochamus alternatus. Likewise, metal ions (Ca2+ ) promoted diapause termination by reducing diapause duration. We combined transcriptomic and metabolomic analyses to investigate changes in gene expression and metabolism in diapause-terminated larvae treated with high temperature (MaHt) and metal ions (MaCa). Hormone biosynthesis and metabolism contained the highest proportion of significant differentially expressed genes (DEGs) in the two groups. 20-hydroxyecdysone (20E) and juvenile hormone (JH) were closely related to diapause termination in M. alternatus. RNA interference (RNAi) experiments verified that 20E biosynthesis (CYP314a1) and degradation (CYP18a1), JH biosynthesis (FOHSDR-1) and degradation (JHEH) genes affected the larval diapause duration significantly. In addition, dysfunction of CYP314a1 resulted in increased larval mortality (P < 0.01), reduced pupation rate and emergence rate (P < 0.05). Enzyme-linked immunosorbent assay (ELISA) analysis showed that the ecdysone content decreased after dsCYP314a1 injection and JH content increased after dsJHEH injection. CONCLUSION The results indicate that genes CYP314a1, CYP18a1, FOHSDR-1 and JHEH mediated 20E and JH biosynthesis and degradation to regulate diapause termination in M. alternatus. We elucidated the molecular mechanism underlying the regulation of diapause termination and provided a basis for the prevention and control of M. alternatus infestation. © 2022 Society of Chemical Industry.
Collapse
Affiliation(s)
- Meijiao Yang
- Forestry College, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory of Integrated Pest Management in Ecological Forests, Fujian Agriculture and Forestry University, Fuzhou, China
- International Joint Laboratory of Forest Symbiology, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Guoqiang Li
- Forestry College, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory of Integrated Pest Management in Ecological Forests, Fujian Agriculture and Forestry University, Fuzhou, China
- International Joint Laboratory of Forest Symbiology, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Lu Yu
- Forestry College, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory of Integrated Pest Management in Ecological Forests, Fujian Agriculture and Forestry University, Fuzhou, China
- International Joint Laboratory of Forest Symbiology, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Shijie Du
- Forestry College, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Di Jiang
- Forestry College, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory of Integrated Pest Management in Ecological Forests, Fujian Agriculture and Forestry University, Fuzhou, China
- International Joint Laboratory of Forest Symbiology, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Xu Chu
- Forestry College, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory of Integrated Pest Management in Ecological Forests, Fujian Agriculture and Forestry University, Fuzhou, China
- International Joint Laboratory of Forest Symbiology, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Kai Wang
- Forestry College, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Songqing Wu
- Forestry College, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory of Integrated Pest Management in Ecological Forests, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Rong Wang
- Forestry College, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory of Integrated Pest Management in Ecological Forests, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Feiping Zhang
- Forestry College, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory of Integrated Pest Management in Ecological Forests, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Xia Hu
- Forestry College, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory of Integrated Pest Management in Ecological Forests, Fujian Agriculture and Forestry University, Fuzhou, China
- International Joint Laboratory of Forest Symbiology, Fujian Agriculture and Forestry University, Fuzhou, China
| |
Collapse
|
23
|
Wang P, Cui Q, Wang X, Liu Y, Zhang Y, Huang X, Jiang S, Jiang M, Bi L, Li B, Wei W, Pan Z. The inhibition of ecdysone signal pathway was the key of pyriproxyfen poisoning for silkworm, Bombyx mori. Pestic Biochem Physiol 2023; 189:105307. [PMID: 36549814 DOI: 10.1016/j.pestbp.2022.105307] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2022] [Revised: 11/09/2022] [Accepted: 11/27/2022] [Indexed: 06/17/2023]
Abstract
Pyriproxyfen is a juvenile hormone-like pesticide. Once intake occurs, it leads to a series of poisoning characters consequences in silkworm, Bombyx mori (ID: 7091, Lepidoptera), such as non- cocooning, non-pupation, production of low-active eggs, and extended stages. However, the poisoning mechanism is still unclear. Here, silkworms were fed mulberry leaves soaked with different pyriproxyfen concentrations, and the heads were dissected for transcriptome analysis, while the hemolymph was used for determinations of ecdysone and juvenile hormone titers. As a result, after conjoint analysis of 3 feeding groups and a control group, 555 differentially expressed genes (DEGs) were obtained, which were mainly involved in hormone metabolism, glycometabolism and protein metabolism. Meanwhile, 119 genes were significantly correlated with the pyriproxyfen concentrations, and they were mainly involved in drug metabolism and glycometabolism. The ecdysone titers in several feeding groups were significantly lower than those of the control group, while juvenile hormone was not detected in all groups, including the control and feeding groups. Correspondingly, due to activation of the juvenile hormone signaling pathway by pyriproxyfen, key genes in the ecdysone synthesis pathway were downregulated, and a large number of downstream genes were up- or downregulated. In addition, nearly all genes in the detoxification pathway were upregulated. These results suggested that, affected by the juvenile hormone signaling pathway, ecdysone titers decreased and further affected a series of downstream processes, and this was the key reason for pyriproxyfen poisoning in silkworm, B. mori, which could lay a foundation for the study of pyriproxyfen resistance in silkworm.
Collapse
Affiliation(s)
- Pingyang Wang
- Guangxi Zhuang Autonomous Region Research Academy of Sericultural Science, Nanning, Guangxi 530007, PR China.
| | - Qiuying Cui
- Guangxi Zhuang Autonomous Region Research Academy of Sericultural Science, Nanning, Guangxi 530007, PR China
| | - Xia Wang
- Guangxi Zhuang Autonomous Region Research Academy of Sericultural Science, Nanning, Guangxi 530007, PR China
| | - Yanwei Liu
- Guangxi Zhuang Autonomous Region Research Academy of Sericultural Science, Nanning, Guangxi 530007, PR China
| | - Yuli Zhang
- Guangxi Zhuang Autonomous Region Research Academy of Sericultural Science, Nanning, Guangxi 530007, PR China
| | - Xuhua Huang
- Guangxi Zhuang Autonomous Region Research Academy of Sericultural Science, Nanning, Guangxi 530007, PR China
| | - Shidong Jiang
- Guangxi Zhuang Autonomous Region Research Academy of Sericultural Science, Nanning, Guangxi 530007, PR China
| | - Mangui Jiang
- Guangxi Zhuang Autonomous Region Research Academy of Sericultural Science, Nanning, Guangxi 530007, PR China
| | - Lihui Bi
- Guangxi Zhuang Autonomous Region Research Academy of Sericultural Science, Nanning, Guangxi 530007, PR China
| | - Biao Li
- Guangxi Zhuang Autonomous Region Research Academy of Sericultural Science, Nanning, Guangxi 530007, PR China
| | - Wei Wei
- Guangxi Zhuang Autonomous Region Research Academy of Sericultural Science, Nanning, Guangxi 530007, PR China
| | - Zhixin Pan
- Guangxi Zhuang Autonomous Region Research Academy of Sericultural Science, Nanning, Guangxi 530007, PR China.
| |
Collapse
|
24
|
Hasnain M, Saeed S, Naeem-Ullah U, Ullah S. Evaluation of chemosterility effect of different insect growth regulators on Bactrocera zonata population. Sci Prog 2023; 106:368504231155388. [PMID: 36803156 PMCID: PMC10450315 DOI: 10.1177/00368504231155388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
The indiscriminate application of synthetic pesticides on horticultural plants for the management of Bactrocera zonata has both economic and environmental implications due to the biomagnification of harmful residues in humans via the food chain. This necessitates the use of some eco-friendly control measures such as insect growth regulators (IGRs) as an alternative. A laboratory experiment was laid out to determine the potential chemosterilant effect of five IGRs including pyriproxyfen, novaluron, lufenuron, buprofezin, and flubendiamide at six different concentrations on B. zonata after treating adult diet. Using the oral bioassay, B. zonata were fed on IGRs impregnated diet (50-300 ppm/5 mL diet) which was replaced with the normal diet after 24 h of feeding. Ten pairs of B. zonata were placed in a separate plastic cage accommodating an ovipositor attractant guava for eggs collection and calculation. An analysis of the result revealed that fecundity and hatchability were higher at a low dose and vice versa. Lufenuron at 300 ppm/5 mL of diet significantly decreased the fecundity rate (31.1%) as compared to pyriproxyfen, novaluron, buprofezin and flubendiamide, which had 39.3%, 39.3%, 43.8%, and 47.5%, respectively. The lowest hatchability (19.9%) was noted in lufenuron treated diet followed by pyriproxyfen, novaluron, buprofezin, and flubendiamide, which had 22.1%, 25.0%, 30.9%, and 31.6%, respectively. Furthermore, in a population of crosses between the lufenuron treated male and female, a significant decrease in fecundity (45.5%) and hatchability (51.7%) was noted as compared to other IGRs. Overall, this study identified the chemosterilant potential of lufenuron on the population of B. zonata which can be integrated for its management strategy.
Collapse
Affiliation(s)
- Muhammad Hasnain
- Institute of Plan Protection, MNS University of Agriculture, Multan, Punjab, Pakistan
| | - Shafqat Saeed
- Institute of Plan Protection, MNS University of Agriculture, Multan, Punjab, Pakistan
| | - Unsar Naeem-Ullah
- Institute of Plan Protection, MNS University of Agriculture, Multan, Punjab, Pakistan
| | - Sami Ullah
- Department of Horticulture, MNS University of Agriculture, Multan, Punjab, Pakistan
| |
Collapse
|
25
|
Shah S, Zhang SS, Elgizawy KK, Yan WH, Tang N, Wu G, Yang FL. Diallyl trisulfide reduced the reproductive capacity of male Sitotroga cerealella via the regulation of juvenile and ecdysone hormones. Ecotoxicol Environ Saf 2022; 248:114304. [PMID: 36403303 DOI: 10.1016/j.ecoenv.2022.114304] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 10/21/2022] [Accepted: 11/14/2022] [Indexed: 06/16/2023]
Abstract
Environmental pollution and resistance in animals are major concerns for the application of synthetic pesticides. Diallyl trisulfide (DAT), an active compound in garlic essential oil, is a novel tool for active and safe control of agricultural insect pests. In this study, we analysed the effects of DAT (0.01 μL/L) on the protein content in male reproductive tissues (accessory glands, ejaculatory ducts, and testis), and juvenile hormone (JH) and ecdysone titres in a highly detrimental pest of stored products, Sitotroga cerealella. Evaluation of the expression profile of JH and ecdysone pathway-related genes in various tissues indicated that the accessory gland protein and ecdysone titres were markedly decreased after DAT fumigation, whereas the testis protein content and JH titre were increased. However, the protein content of the ejaculatory ducts remained unchanged between the treated and control groups. Further investigation revealed that DAT disrupted the mRNA expression of key enzymes involved in JH and ecdysone pathways. While increased mRNA levels of juvenile hormone acid O-methyltransferase (JHMAT) and Kruppel homologue 1 (Kr-h1) were observed after 4 and 7 h of DAT fumigation, the levels of juvenile hormone epoxide hydrolase (JHEH) were substantially reduced 3 h post-fumigation. mRNA levels of the ecdysone-responsive gene, FTZF1, and cytochrome P450 enzyme, CYP315A1, were notably decreased at 7 h and 4 h, respectively, post-fumigation, whereas CYP314A1 and CYP302A1 mRNA levels decreased after 3 h and 4 h, respectively. While DAT fumigation disrupted sperm number in the testis, ejaculatory ducts, and seminal vesicles, topical application of the 20-hydroxyecdysone (20E) analogue also lowered sperm number in the ejaculatory ducts. Topical application of methoprene, a JH analogue, increased the protein content in the testes, but not in the accessory glands or ejaculatory ducts. However, the survival rate was not affected by the topical application of methoprene or 20E. These data suggest that DAT regulates JH and ecdysone via its molecular pathway genes and modulates endocrine secretion during the male reproductive process.
Collapse
Affiliation(s)
- Sakhawat Shah
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, 430070 Wuhan, Hubei, People's Republic of China
| | - Su-Su Zhang
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, 430070 Wuhan, Hubei, People's Republic of China
| | - Karam Khamis Elgizawy
- Plant Protection Department, Faculty of Agriculture, Benha University, Moshtohor, Toukh 13736, Egypt
| | - Wen-Han Yan
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, 430070 Wuhan, Hubei, People's Republic of China
| | - Ning Tang
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, 430070 Wuhan, Hubei, People's Republic of China
| | - Gang Wu
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, 430070 Wuhan, Hubei, People's Republic of China
| | - Feng-Lian Yang
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, 430070 Wuhan, Hubei, People's Republic of China.
| |
Collapse
|
26
|
Chang YW, Wang YC, Yan YQ, Wu CD, Xie HF, Gong WR, Du YZ. Insect hormones affect the toxicity of the insecticidal growth regulator cyromazine in Liriomyza trifolii (Diptera: Agromyzidae). Pestic Biochem Physiol 2022; 188:105263. [PMID: 36464368 DOI: 10.1016/j.pestbp.2022.105263] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 09/08/2022] [Accepted: 10/09/2022] [Indexed: 05/28/2023]
Abstract
The leafminer Liriomyza trifolii is an important insect pest of ornamental and vegetable crops worldwide. Cyromazine is an effective, commonly-used insecticide that functions as a growth regulator, but its effect on L. trifolii has not been previously reported. In this study, transcriptome analysis was undertaken in L. trifolii exposed to cyromazine. Clusters of orthologous groups analysis indicated that a large number of differentially expressed genes responding to cyromazine were categorized as "lipid transport and metabolism", "post-translational modification, protein turnover, chaperones", and "cell wall/membrane/envelope biogenesis". Gene ontology analysis indicated that pathways associated with insect hormones, growth and development, and cuticle synthesis were significantly enriched. In general, the transcriptome results showed that the genes related to insect hormones were significantly expressed after treatment with cyromazine. Furthermore, the combined exposure of L. trifolii to cyromazine and the hormone analogues 20-hydroxyecdysone (20E) or juvenile hormone (JH) indicated that hormone analogues can change the expression pattern of hormone-related genes (20EP and JHEH) and pupal length. The combined application of cyromazine with 20E improved the survival rate of L. trifolii, whereas the combination of JH and cyromazine reduced survival. The results of this study help elucidate the mechanistic basis for cyromazine toxicity and provide a foundation for understanding cyromazine resistance.
Collapse
Affiliation(s)
- Ya-Wen Chang
- School of Horticulture and Plant Protection & Institute of Applied Entomology, Yangzhou University, Yangzhou, China
| | - Yu-Cheng Wang
- School of Horticulture and Plant Protection & Institute of Applied Entomology, Yangzhou University, Yangzhou, China
| | - Yu-Qing Yan
- School of Horticulture and Plant Protection & Institute of Applied Entomology, Yangzhou University, Yangzhou, China
| | - Cheng-Dong Wu
- Pukou Agricultural Technology Extension Center of Nanjing City, Nanjing, China
| | - Hong-Fang Xie
- Plant Protection and Quarantine Station of Nanjing City, Nanjing, China
| | - Wei-Rong Gong
- Plant Protection and Quarantine Station of Jiangsu Province, Nanjing, China
| | - Yu-Zhou Du
- School of Horticulture and Plant Protection & Institute of Applied Entomology, Yangzhou University, Yangzhou, China; Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education, Yangzhou University, Yangzhou, China.
| |
Collapse
|
27
|
Zhou QH, Zhang Q, Yang RL, Yuan GR, Wang JJ, Dou W. RNAi-mediated knockdown of juvenile hormone acid O-methyltransferase disrupts larval development in the oriental fruit fly, Bactrocera dorsalis (Hendel). Pestic Biochem Physiol 2022; 188:105285. [PMID: 36464328 DOI: 10.1016/j.pestbp.2022.105285] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2022] [Revised: 10/20/2022] [Accepted: 11/02/2022] [Indexed: 06/17/2023]
Abstract
The oriental fruit fly, Bactrocera dorsalis (Hendel), is a notoriously agricultural pest that causes serious economic losses to fruits and vegetables. Widespread insecticide resistance in B. dorsalis is a major obstacle in successful control. Therefore, new pest control strategies, such as those targeting specific genes that can block pest development, are urgently needed. In the current study, the function of JHAMT in B. dorsalis was systematically investigated. A methyltransferase gene in B. dorsalis (BdJHAMT) that is homologous to JHAMT of Drosophila melanogaster was cloned firstly. The subsequently spatiotemporal expression analysis indicated that BdJHAMT mRNA was continuously present in the larval stage, declined sharply immediately before pupation, and then increased in the adult. Subcellular localization showed that BdJHAMT was localized in the adult corpora allata and larval intestinal wall cells. The JH III titer in B. dorsalis was closely related to the transcription level of BdJHAMT in different developmental stages. The dsBdJHAMT feeding-based RNAi resulted in a greatly decreased JH III titer that disrupted fly development. The slow growth caused by BdJHAMT silencing was partially rescued by application of the JH mimic, methoprene. These results demonstrated that BdJHAMT was crucial for JH biosynthesis and thus regulated larval development in B. dorsalis, indicating it may serve as a prospective target for the development of novel control strategies against this pest.
Collapse
Affiliation(s)
- Qi-Hao Zhou
- Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing 400715, China; Academy of Agricultural Sciences, Southwest University, Chongqing 400715, China
| | - Qiang Zhang
- Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing 400715, China; Academy of Agricultural Sciences, Southwest University, Chongqing 400715, China
| | - Rui-Lin Yang
- Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing 400715, China; Academy of Agricultural Sciences, Southwest University, Chongqing 400715, China
| | - Guo-Rui Yuan
- Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing 400715, China; Academy of Agricultural Sciences, Southwest University, Chongqing 400715, China
| | - Jin-Jun Wang
- Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing 400715, China; Academy of Agricultural Sciences, Southwest University, Chongqing 400715, China
| | - Wei Dou
- Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing 400715, China; Academy of Agricultural Sciences, Southwest University, Chongqing 400715, China.
| |
Collapse
|
28
|
da Fonseca Duarte A, de Bastos Pazini J, Costa Padilha A, Pedro Robe Fagundes J, Lessa Pinto Duarte J, Silva da Cunha U, Bernardi D. Biological Activity of Insecticides Against Bradysia ocellaris Larvae (Diptera: Sciaridae): A New Pest of Strawberry Crops. J Econ Entomol 2022; 115:1601-1606. [PMID: 35904114 DOI: 10.1093/jee/toac115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Indexed: 06/15/2023]
Abstract
Black fungus gnat larvae are one of the primary insect pests in greenhouse and nursery crops, and Bradysia ocellaris (Comstock) (Diptera: Sciaridae) is one common pest species. This pest is difficult to control in Brazil because of the absence of registered insecticides. The aim of this work was to evaluate the effects of some insecticides on B. ocellaris larvae. We also verified that the insect growth regulator novaluron caused the deformation of B. ocellaris. Of the insecticides evaluated, malationa, and thiamethoxam showed high mortality rate (96 and 86 % respectively). Further, bioassays with acetamiprid (78 %) and novaluron (44 %) showed that the lethal concentrations (LC50) were 19.18 mg a.i.L-1 at 48h to acetamiprid and 1.24 mg a.i.L-1 at 120 h to novaluron. When larvae were fed on potato pieces treated with novaluron, independently of the dose, the mortality rate was 100 %, since no larvae could complete the development cycle. Among all evaluated insecticides, only acetamiprid and novaluron were considered effective tools for control of B. ocellaris larvae under laboratory conditions.
Collapse
Affiliation(s)
| | | | - Aline Costa Padilha
- Food Irradiation and Radioentomology Laboratory, University of São Paulo, Piracicaba, SP, Brazil
| | | | | | | | - Daniel Bernardi
- Departamento de Fitossanidade, Universidade Federal de Pelotas, Pelotas, RS, Brazil
| |
Collapse
|
29
|
Ayisha Banu C, Manogem EM. Anti-proliferative and apoptosis-inducing effects of juvenile hormone analogue, fenoxycarb in the Sf21cell line. Pestic Biochem Physiol 2022; 187:105182. [PMID: 36127044 DOI: 10.1016/j.pestbp.2022.105182] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 07/19/2022] [Accepted: 07/24/2022] [Indexed: 06/15/2023]
Abstract
The apprehension regarding the possible environmental effects of synthetic pesticides has led to the discovery and production of environmental friendly pesticides. Insect hormone mimics, mainly juvenile hormone analogues, like fenoxycarb have acquired attention due to their greater specificity than conventional broad-range insecticides as pest control agents. The study explored the effects of the insecticide juvenile hormone analogue (JHA), fenoxycarb, on the Sf21 cell line of Spodoptera frugiperda to illustrate the mode of action. Cytotoxicity assay was conducted at different concentrations of fenoxycarb ranging from 0.5 nM to 10 μM. The results showed the concentration-and time-dependent anti-proliferative effect of fenoxycarb. The median inhibitory concentration (IC50) was calculated as 28 nM at 48 h of exposure, and IC50 and IC25 concentrations were used for further cytotoxicity screening assays. Furthermore, the significant morphological changes of the cells after 48 h revealed the development of apoptotic bodies, membrane blebbing, cell size reduction, and irregular cell aggregation; additionally, enlarged cell spaces and widely diffused apoptotic bodies were observed after 72 h of insecticide exposure. In the confocal microscopic analysis of fenoxycarb treated cells, the nucleus was observed to condense and collapse into many fragments by Hoechst-33,342. Assessment of the relative potential of the cell cycle at two concentrations (IC50& IC25) reported the concentration-and time-dependent reduction of cells in the G1 phase with an upsurge in apoptotic cells. The percentage of cells that underwent apoptotic changes, such as loss of mitochondrial membrane potential (MMP), was strictly dependent on the fenoxycarb concentration and duration of exposure. The findings confirm the presence of fenoxycarb-mediated cell proliferation inhibition and apoptosis in Sf21 cell lines.
Collapse
Affiliation(s)
- C Ayisha Banu
- Division of Insect Endocrinology, Department of Zoology, University of Calicut, 673635, Kerala, India.
| | - E M Manogem
- Department of Zoology, University of Calicut, 673635, Kerala, India.
| |
Collapse
|
30
|
Merleau LA, Larrigaldie I, Bousquet O, Devers S, Keller M, Lécureuil C, Meunier J. Exposure to pyriproxyfen (juvenile hormone agonist) does not alter maternal care and reproduction in the European earwig. Environ Sci Pollut Res Int 2022; 29:72729-72746. [PMID: 35610459 DOI: 10.1007/s11356-022-20970-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Accepted: 05/16/2022] [Indexed: 06/15/2023]
Abstract
Sublethal exposure to pesticides can alter the survival and reproduction of a wide range of non-target organisms. However, it remains unclear whether this exposure can alter behaviours that are often essential for long-term population dynamics and maintenance, such as parental care. In this study, we tested the effect of pyriproxyfen exposure (an insect growth regulator) on maternal care in the European earwig, an insect that is both used in pest control in pip-fruit orchards and considered a pest in stone fruit orchards. We exposed 424 females at doses either 10 times lower, equivalent or 10 times higher than normal application rates in French orchards. As maternal care can change over the weeks of family life, we exposed the earwig mothers at five different days before and after egg hatching. We then measured the expression of ten forms of maternal care towards eggs and juveniles, six non-caring behaviours, eggs and juvenile development, metabolic reserves in mothers at egg hatching and females' production of a terminal clutch. First, our results revealed that the three tested doses of pyriproxyfen were non-lethal and confirmed that maternal care decreased throughout both pre- and post-hatching family life. However, we did not detect any effect of pyriproxyfen on maternal care and non-care behaviours, eggs and juvenile development, quantities of lipids, proteins and glycogen in mothers at egg hatching, and on the production of a future clutch. Overall, these findings suggest that the maximal doses of pyriproxyfen authorized in French orchards is likely to have limited effects on the short- and long-term maintenance of populations of the European earwig and raises fundamental questions about the nature of the link between juvenile hormone and parental care in insects.
Collapse
Affiliation(s)
- Leslie-Anne Merleau
- Institut de Recherche sur la Biologie de l'Insecte, UMR7261, CNRS, University of Tours, Tours, France
| | - Izïa Larrigaldie
- Institut de Recherche sur la Biologie de l'Insecte, UMR7261, CNRS, University of Tours, Tours, France
| | - Océane Bousquet
- Institut de Recherche sur la Biologie de l'Insecte, UMR7261, CNRS, University of Tours, Tours, France
| | - Séverine Devers
- Institut de Recherche sur la Biologie de l'Insecte, UMR7261, CNRS, University of Tours, Tours, France
| | - Matthieu Keller
- Laboratoire de Physiologie de la Reproduction & des Comportements, UMR 7247 INRAE/CNRS/Université de Tours/IFCE, Nouzilly, France
| | - Charlotte Lécureuil
- Institut de Recherche sur la Biologie de l'Insecte, UMR7261, CNRS, University of Tours, Tours, France
| | - Joël Meunier
- Institut de Recherche sur la Biologie de l'Insecte, UMR7261, CNRS, University of Tours, Tours, France.
| |
Collapse
|
31
|
Yang Z, Wu Y, Yan Y, Xu G, Yu N, Liu Z. Regulation of juvenile hormone and ecdysteroid analogues on the development of the predatory spider, Pardosa pseudoannulata, and its regulatory mechanisms. Ecotoxicol Environ Saf 2022; 242:113847. [PMID: 35809399 DOI: 10.1016/j.ecoenv.2022.113847] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 06/20/2022] [Accepted: 07/01/2022] [Indexed: 06/15/2023]
Abstract
Insecticides harm the beneficial organisms, such as predatory spiders, through direct killing or regulation of the development and reproduction. In this study, the bioassay showed that the treatment of juvenile hormone (JH) analogue fenoxycarb delayed the moulting of Pardosa pseudoannulata, a dominant predatory spider in paddy fields. In order to figure out the regulatory mechanism of fenoxycarb on the spider development, we systematically analyzed JH biosynthesis in P. pseudoannulata. All genes involved in JH biosynthesis pathway were retrieved from the genome of P. pseudoannulata, except for CYP15A1. The absence of CYP15A1 was in agreement with the identification of methyl farnesoate (MF) rather than JH III in the spider. The delayed moulting and decreased expression of JH biosynthesis-related genes in the MF-applied spiderlings supported that MF was an active JH. Fenoxycarb treatment significantly upregulated the transcriptional level of JH biosynthesis-related genes and consequently delayed the spiderling moulting. In the spider development, ecdysteroid played the opposite role, in contrast to MF, to accelerate the development, as our previous study. Here we found that the treatment of ecdysteroid analogue tebufenozide accelerated P. pseudoannulata spiderling moulting, which resulted from the expressional suppression of ecdysteroid biosynthesis-related genes. In total, the JH and ecdysteroid analogues affected the development of P. pseudoannulata by the expressional regulation of biosynthesis-related genes, which would be helpful for the evaluation of hormone analogue insecticides in environmental safety, and useful for the protection and application of P. pseudoannulate and related spider species.
Collapse
Affiliation(s)
- Zhiming Yang
- Key Laboratory of Integrated Management of Crop Diseases and Pests (Ministry of Education), College of Plant Protection, Nanjing Agricultural University, Weigang 1, Nanjing 210095, PR China.
| | - Yong Wu
- Key Laboratory of Integrated Management of Crop Diseases and Pests (Ministry of Education), College of Plant Protection, Nanjing Agricultural University, Weigang 1, Nanjing 210095, PR China.
| | - Yangyang Yan
- Key Laboratory of Integrated Management of Crop Diseases and Pests (Ministry of Education), College of Plant Protection, Nanjing Agricultural University, Weigang 1, Nanjing 210095, PR China.
| | - Guangming Xu
- Key Laboratory of Integrated Management of Crop Diseases and Pests (Ministry of Education), College of Plant Protection, Nanjing Agricultural University, Weigang 1, Nanjing 210095, PR China.
| | - Na Yu
- Key Laboratory of Integrated Management of Crop Diseases and Pests (Ministry of Education), College of Plant Protection, Nanjing Agricultural University, Weigang 1, Nanjing 210095, PR China.
| | - Zewen Liu
- Key Laboratory of Integrated Management of Crop Diseases and Pests (Ministry of Education), College of Plant Protection, Nanjing Agricultural University, Weigang 1, Nanjing 210095, PR China.
| |
Collapse
|
32
|
Zhang L, Yan S, Li M, Wang Y, Shi X, Liang P, Yin M, Shen J, Gao X. Nanodelivery System Alters an Insect Growth Regulator's Action Mode: From Oral Feeding to Topical Application. ACS Appl Mater Interfaces 2022; 14:35105-35113. [PMID: 35867633 DOI: 10.1021/acsami.2c08239] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Insect growth regulators (IGRs) guide animal development through injection, oral feeding, or topical application. Among them, lufenuron is a widely used insect cuticle inhibitor but only shows a gastric toxic effect. Lacking contact toxicity limits the effective utilization when spraying the lufenuron pesticide. To overcome this shortcoming, a nanocarrier (star polycation, SPc)-based transdermal delivery system was applied to improve the penetrability and contact toxicity of lufenuron. The fluoride groups in lufenuron could interact with the tertiary amines in the branch-chain of the SPc through electrostatic interaction to form a lufenuron/SPc complex. The above interaction reduced the particle size of lufenuron from 933 to 70 nm. Interestingly, the contact toxicity of SPc-loaded lufenuron was remarkably improved with effects of higher larval mortality and lower egg hatching rate of the devastating pest fall armyworm. The physiological and molecular toxic mechanism was revealed by RNA-Seq analysis. The SPc-loaded lufenuron apparently down-regulated cuticle-related genes and thus inhibited insect cuticle formation. Such contact toxicity was achieved by the transdermal nanodelivery of lufenuron, which up-regulated endocytosis-related genes for drug uptake. This study is the first successful application of a nanoparticle-mediated transdermal delivery system to explore the contact toxicity of an IGR, which alters the IRG's action mode from oral feeding to topical application.
Collapse
Affiliation(s)
- Lei Zhang
- College of Plant Protection, China Agricultural University, No. 2, Yuanmingyuan West Road, Haidian District, Beijing 100193, P. R. China
| | - Shuo Yan
- College of Plant Protection, China Agricultural University, No. 2, Yuanmingyuan West Road, Haidian District, Beijing 100193, P. R. China
| | - Mingjian Li
- College of Plant Protection, China Agricultural University, No. 2, Yuanmingyuan West Road, Haidian District, Beijing 100193, P. R. China
| | - Ye Wang
- College of Plant Protection, China Agricultural University, No. 2, Yuanmingyuan West Road, Haidian District, Beijing 100193, P. R. China
| | - Xueyan Shi
- College of Plant Protection, China Agricultural University, No. 2, Yuanmingyuan West Road, Haidian District, Beijing 100193, P. R. China
| | - Pei Liang
- College of Plant Protection, China Agricultural University, No. 2, Yuanmingyuan West Road, Haidian District, Beijing 100193, P. R. China
| | - Meizhen Yin
- State Key Laboratory of Chemical Resource Engineering, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, No. 15, North Third Ring East Road, Chaoyang District, Beijing 100029, P. R. China
| | - Jie Shen
- College of Plant Protection, China Agricultural University, No. 2, Yuanmingyuan West Road, Haidian District, Beijing 100193, P. R. China
| | - Xiwu Gao
- College of Plant Protection, China Agricultural University, No. 2, Yuanmingyuan West Road, Haidian District, Beijing 100193, P. R. China
| |
Collapse
|
33
|
Zhang A, Zhou W, Wu D, Han L, Zhao K. Effects of multigenerational imidacloprid and thiamethoxam stress on metabolism and physiology of Aphis glycines Matsumura (Hemiptera: Aphididae). PLoS One 2022; 17:e0271069. [PMID: 35802579 PMCID: PMC9269462 DOI: 10.1371/journal.pone.0271069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Accepted: 06/22/2022] [Indexed: 11/18/2022] Open
Abstract
The soybean aphid, Aphis glycines Matsumura (Hemiptera: Aphididae), a primary pest of soybean, poses a severe threat to soybean production. In this study, the 4th instar nymphs were exposed to the LC50 and LC30 of imidacloprid and thiamethoxam from F0 to F4 generations to evaluate the activities of peroxidase, pyruvate kinase, and trehalase using microassay. We found that peroxidase and pyruvate kinase activities in soybean aphids increased rapidly, first to peak and then decreased slowly generation by generation under imidacloprid and thiamethoxam stress. In contrast, the trehalase activity was significantly decreased in F1 to F5 generations when treated with the LC50 and LC30 and imidacloprid and thiamethoxam compared to control. In addition, the Enzyme-Linked Immunosorbent Assay (ELISA) was used to monitor the changes in molting and juvenile hormone expressions of the soybean aphids in each generation (F1-F5). The expression of juvenile hormone in soybean aphids was increased significantly in each generation under continuous stress of imidacloprid and thiamethoxam LC50 imidacloprid and LC50 thiamethoxam inhibited the expression of molting hormones in soybean aphids of each generation. LC30 imidacloprid or LC30 thiamethoxam significantly stimulated the expression of molting hormone in the 1st and 2nd instar nymphs in each generation. In this paper, the differences in antioxidant regulation, energy metabolism intensity, and hormone expression of multi-generation soybean aphids were monitored under continuous stress of imidacloprid and thiamethoxam. Our results revealed the effects of continuous insecticide stress on the main endogenous substances. Further, they clarified the regulation rules of resistance in soybean aphids, providing a reference for efficient control with imidacloprid and thiamethoxam.
Collapse
Affiliation(s)
- Aonan Zhang
- College of Agriculture, Northeast Agricultural University, Harbin, Heilongjiang, PR China
| | - Wenjing Zhou
- College of Agriculture, Northeast Agricultural University, Harbin, Heilongjiang, PR China
| | - Dongxue Wu
- College of Agriculture, Northeast Agricultural University, Harbin, Heilongjiang, PR China
| | - Lanlan Han
- College of Agriculture, Northeast Agricultural University, Harbin, Heilongjiang, PR China
| | - Kuijun Zhao
- College of Agriculture, Northeast Agricultural University, Harbin, Heilongjiang, PR China
| |
Collapse
|
34
|
Luo J, Yi G, Liu S, Mei Y, Chen W, Hou J, Zhang F, Yang T, Li H, Li X. Juvenile Hormone III R Stereoisomer Is Specifically Synthesized by Honeybees ( Apis mellifera ligustica) and Shows a Higher Biological Activity in Regulating Their Social Behavior. J Agric Food Chem 2022; 70:6097-6107. [PMID: 35544752 DOI: 10.1021/acs.jafc.2c00762] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The juvenile hormone (JH) plays a key role in the development of honeybee larvae and the alteration of adult behavior. Verification methods of types and stereoisomers of JHs in honeybees were established in this study. The regulatory modes of different stereoisomers of JH III on the social behaviors of honeybees were revealed by the disparity of interaction and RNA-seq. This result represented the first assessment of the effects of R-JH III and S-JH III in honeybee interactions; the former (367 times in total) was significantly higher than the latter (235 times in total); honeybees with high JH titers are always welcome in the colony because the effect of JH III on bees involves the sensing and signaling of hormones, and R-JH III is much more active than S-JH III in this regulation. Efficient R-JH III may be the insurance for bees to establish their social system advantages.
Collapse
Affiliation(s)
- Jie Luo
- Guangxi Key Laboratory of Agric-Environment and Agric-Products Safety, Guangxi University, Nanning, Guangxi 530004, China
| | - Guoqiang Yi
- Guangxi Key Laboratory of Agric-Environment and Agric-Products Safety, Guangxi University, Nanning, Guangxi 530004, China
| | - Sheng Liu
- Guangxi Key Laboratory of Agric-Environment and Agric-Products Safety, Guangxi University, Nanning, Guangxi 530004, China
| | - Yong Mei
- Guangxi Key Laboratory of Agric-Environment and Agric-Products Safety, Guangxi University, Nanning, Guangxi 530004, China
| | - Weiwei Chen
- Guangxi Key Laboratory of Agric-Environment and Agric-Products Safety, Guangxi University, Nanning, Guangxi 530004, China
| | - Jiangan Hou
- Guangxi Key Laboratory of Agric-Environment and Agric-Products Safety, Guangxi University, Nanning, Guangxi 530004, China
| | - Fu Zhang
- Guangxi Key Laboratory of Agric-Environment and Agric-Products Safety, Guangxi University, Nanning, Guangxi 530004, China
| | - Taiyi Yang
- Guangxi Key Laboratory of Agric-Environment and Agric-Products Safety, Guangxi University, Nanning, Guangxi 530004, China
| | - Honghong Li
- Guangxi Key Laboratory of Agric-Environment and Agric-Products Safety, Guangxi University, Nanning, Guangxi 530004, China
| | - Xuesheng Li
- Guangxi Key Laboratory of Agric-Environment and Agric-Products Safety, Guangxi University, Nanning, Guangxi 530004, China
| |
Collapse
|
35
|
Joseph SV. Insect growth regulators elicit transovarial effects on Teleonemia scrupulosa (Hemiptera: Tingidae). Pest Manag Sci 2022; 78:1800-1805. [PMID: 35019229 DOI: 10.1002/ps.6797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 01/04/2022] [Accepted: 01/09/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND Lantana lace bug, Teleonemia scrupulosa Stål (Hemiptera: Tingidae), is an important insect pest of lantana (Lantana camara L.). The adults and nymphs feed on the leaves, gradually deteriorating the quality of leaf tissue, as the affected leaves appear brown and desiccated. Infestations of T. scrupulosa reduce the market value of container plants in nurseries and the aesthetic value of ornamental landscapes. Because T. scrupulosa typically is managed using neonicotinoids and concerns related to the nontargeted effects of neonicotinoids on pollinators are mounting, practitioners are seeking alternative options to manage T. scrupulosa infestations. Insect growth regulators (IGRs) elicit transovarial activity, where adults exposed to IGRs produce nonviable eggs, but this effect has not been documented for T. scrupulosa. RESULTS A significantly lower number of T. scrupulosa nymphs was produced when adults were sprayed topically with novaluron and pyriproxyfen than nontreated adults. The number of T. scrupulosa nymphs produced was not significantly different when adults were exposed to a lower dose (0.125×) and a maximum dose (1.0×) of novaluron. CONCLUSION Novaluron and pyriproxyfen elicited transovarial effects on T. scrupulosa when adults were exposed to these IGRs. Evidence of transovarial effects was demonstrated when T. scrupulosa adults were exposed to lower doses (≤0.125×) than the maximum label dose, as densities of nymphs were similar between the lower doses and the maximum label dose of novaluron.
Collapse
Affiliation(s)
- Shimat V Joseph
- Department of Entomology, University of Georgia, Griffin, GA, USA
| |
Collapse
|
36
|
Li D, He C, Wang M, Liu H, Liu R, Xu L. Toxicity of Ribavirin to Spodoptera litura by Inhibiting the Juvenile Hormone. J Agric Food Chem 2022; 70:3117-3126. [PMID: 35229607 DOI: 10.1021/acs.jafc.1c06172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Ribavirin is an antiviral drug showing high and delayed toxicity to the destructive agricultural pest Spodoptera litura. Larvae fed with artificial diets containing ribavirin could not molt successfully and showed abnormal phenotypes, including cuticle melanization and heavy wrinkle of the newly formed procuticle. RNA-Seq analysis suggested that ribavirin has great negative influence on cuticle. Quantitative real-time-polymerase chain reaction results indicated that ribavirin treatment decreased the expression of key genes in juvenile hormone (JH) biosynthesis (CYP15C1 and JH acid methyltransferase) and most cuticle protein genes, whereas the genes in melanin biosynthesis and bursicon genes were upregulated by ribavirin treatment. These results coincided with the decreased titer of JH I, JH II, and JH III determined by enzyme-linked immunosorbent assay, the much thinner procuticle layer exhibited by histopathological examination, and the cuticle melanization after ribavirin treatment. These results provided a valuable theoretical basis for the creation of green insecticides targeting JH and the development of new insecticide derivatives from 1,2,4-triazole.
Collapse
Affiliation(s)
- Dongzhi Li
- College of Resources and Environment, Henan Institute of Science and Technology, Xinxiang 453003, Henan Province, China
- Henan Engineering Research Center of Green Pesticide Creation & Intelligent Pesticide Residue Sensor Detection, Henan Institute of Science and Technology, Xinxiang 453003, Henan Province, China
| | - Chengshuai He
- College of Resources and Environment, Henan Institute of Science and Technology, Xinxiang 453003, Henan Province, China
| | - Meizi Wang
- College of Plant Protection, Henan Agricultural University, Zhengzhou 450002, Henan Province, China
| | - Hongyu Liu
- College of Resources and Environment, Henan Institute of Science and Technology, Xinxiang 453003, Henan Province, China
| | - Runqiang Liu
- College of Resources and Environment, Henan Institute of Science and Technology, Xinxiang 453003, Henan Province, China
- Henan Engineering Research Center of Green Pesticide Creation & Intelligent Pesticide Residue Sensor Detection, Henan Institute of Science and Technology, Xinxiang 453003, Henan Province, China
| | - Li Xu
- College of Resources and Environment, Henan Institute of Science and Technology, Xinxiang 453003, Henan Province, China
- Henan Engineering Research Center of Green Pesticide Creation & Intelligent Pesticide Residue Sensor Detection, Henan Institute of Science and Technology, Xinxiang 453003, Henan Province, China
| |
Collapse
|
37
|
Xu L, Yi SC, Li JY, Tong Y, Xie C, Zeng DQ, Tang WW. Itol A May Affect the Growth and Development of Spodoptera frugiperda through Hijacking JHBP and Impeding JH Transport. J Agric Food Chem 2022; 70:3151-3161. [PMID: 35239350 DOI: 10.1021/acs.jafc.1c08083] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Isoryanodane and ryanodane diterpenes have a carbon skeleton correlation in structures, and their natural product-oxidized diterpenes show antifeedant and insecticidal activities against Hemiptera and Lepidoptera. While ryanodine mainly acts on the ryanodine receptor (RyR), isoryanodane does not. In this study, we demonstrated that itol A, an isoryanodane diterpenoid, could significantly downregulate the expression level of juvenile hormone-binding protein (JHBP), which plays a vital role in JH transport. RNAi bioassay indicated that silencing the Spodoptera frugipreda JHBP (SfJHBP) gene decreased itol A activity, which confirmed the developmental phenotypic observation. Parallel reaction monitoring (PRM) further confirmed that itol A affected JHBP's expression abundance. Although JHBP is not proven as the direct or only target of itol A, we confirmed that itol A's action effect depends largely on JHBP and that JHBP is a potential target of itol A. We present foundational evidence that itol A inhibits the growth and development of Spodoptera frugiperda mainly through hijacking JHBP.
Collapse
Affiliation(s)
- Lin Xu
- Guangxi Key Laboratory of Agric-Environment and Agric-Product Safety, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, Guangxi 530004, People's Republic of China
| | - Shan-Chi Yi
- Guangxi Key Laboratory of Agric-Environment and Agric-Product Safety, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, Guangxi 530004, People's Republic of China
| | - Jiu-Ying Li
- Guangxi Key Laboratory of Agric-Environment and Agric-Product Safety, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, Guangxi 530004, People's Republic of China
| | - Yao Tong
- Guangxi Key Laboratory of Agric-Environment and Agric-Product Safety, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, Guangxi 530004, People's Republic of China
| | - Cong Xie
- Guangxi Key Laboratory of Agric-Environment and Agric-Product Safety, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, Guangxi 530004, People's Republic of China
| | - Dong-Qiang Zeng
- Guangxi Key Laboratory of Agric-Environment and Agric-Product Safety, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, Guangxi 530004, People's Republic of China
| | - Wen-Wei Tang
- Guangxi Key Laboratory of Agric-Environment and Agric-Product Safety, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, Guangxi 530004, People's Republic of China
| |
Collapse
|
38
|
Han H, Feng Z, Han S, Chen J, Wang D, He Y. Molecular Identification and Functional Characterization of Methoprene-Tolerant (Met) and Krüppel-Homolog 1 (Kr-h1) in Harmonia axyridis (Coleoptera: Coccinellidae). J Econ Entomol 2022; 115:334-343. [PMID: 35020924 DOI: 10.1093/jee/toab252] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Indexed: 06/14/2023]
Abstract
Juvenile hormone (JH) plays a key role in regulating insect reproductive processes. Methoprene-tolerant (Met), as a putative JH receptor, transduces JH signals by activating the transcription factor krüppel homolog 1 (Kr-h1). To understand the effects of Met and Kr-h1 genes on female reproduction of natural enemy insects, the Met and Kr-h1 were identified and analyzed from Harmonia axyridis Pallas (HmMet and HmKr-h1). The HmMet protein belonged to the bHLH-PAS family with bHLH domain, PAS domains, and PAC domain. HmMet mRNA was detected in all developmental stages, and the highest expression was found in the ovaries of female adults. The HmKr-h1 protein had eight C2H2-type zinc finger domains. HmKr-h1 mRNA was highly expressed from day 7 to day 9 of female adults. The tissue expression showed that HmKr-h1 was highly expressed in its wing, leg, and fat body. Knockdown of HmMet and HmKr-h1 substantially reduced the transcription of HmVg1 and HmVg2, inhibited yolk protein deposition, and reduced fecundity using RNA interference. In addition, the preoviposition period was significantly prolonged after dsMet-injection, but there was no significant difference after dsKr-h1-silencing. However, the effect on hatchability results was the opposite. Therefore, we infer that both HmMet and HmKr-h1 are involved in female reproduction of H. axyridis, and their specific functions are different in certain physiological processes. In several continents, H. axyridis are not only beneficial insects, but also invasive pests. This report will provide basis for applying or controlling the H. axyridis.
Collapse
Affiliation(s)
- Hui Han
- College of Plant Protection, Hebei Agricultural University, Baoding, China
| | - ZhaoYang Feng
- College of Plant Protection, Hebei Agricultural University, Baoding, China
| | - ShiPeng Han
- College of Plant Protection, Hebei Agricultural University, Baoding, China
| | - Jie Chen
- College of Plant Protection, Hebei Agricultural University, Baoding, China
- Laboratory of Plant Protection, Handan Academy of Agricultural Sciences, Handan, China
| | - Da Wang
- College of Plant Protection, Hebei Agricultural University, Baoding, China
| | - YunZhuan He
- College of Plant Protection, Hebei Agricultural University, Baoding, China
| |
Collapse
|
39
|
Elia-Amira NMR, Chen CD, Low VL, Lau KW, Haziqah-Rashid A, Amelia-Yap ZH, Lee HL, Sofian-Azirun M. Statewide Efficacy Assessment of Insect Growth Regulators Against Aedes albopictus (Diptera: Culicidae) in Sabah, Malaysia: An Alternative Control Strategy? J Med Entomol 2022; 59:301-307. [PMID: 34459477 DOI: 10.1093/jme/tjab146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Indexed: 06/13/2023]
Abstract
The efficacy of three groups of insect growth regulators, namely juvenile hormone mimics (methoprene and pyriproxyfen), chitin synthesis inhibitors (diflubenzuron and novaluron), and molting disruptor (cyromazine) was evaluated for the first time, against Aedes albopictus Skuse (Diptera: Culicidae) larvae from 14 districts in Sabah, Malaysia. The results showed that all field populations of Ae. albopictus were susceptible towards methoprene, pyriproxyfen, diflubenzuron, novaluron, and cyromazine, with resistance ratio values ranging from 0.50-0.90, 0.60-1.00, 0.67-1.17, 0.71-1.29, and 0.74-1.07, respectively. Overall, the efficacy assessment of insect growth regulators in this study showed promising outcomes and they could be further explored as an alternative to conventional insecticides.
Collapse
Affiliation(s)
- N M R Elia-Amira
- Institute of Biological Sciences, Faculty of Science, Universiti Malaya, 50603, Kuala Lumpur, Malaysia
| | - C D Chen
- Institute of Biological Sciences, Faculty of Science, Universiti Malaya, 50603, Kuala Lumpur, Malaysia
- Rimba Ilmu Botanical Garden, Universiti Malaya, 50603, Kuala Lumpur, Malaysia
| | - V L Low
- Higher Institution Centre of Excellence (HICoE), Tropical Infectious Diseases Research and Education Centre (TIDREC), Universiti Malaya, 50603, Kuala Lumpur, Malaysia
| | - K W Lau
- Institute of Biological Sciences, Faculty of Science, Universiti Malaya, 50603, Kuala Lumpur, Malaysia
| | - A Haziqah-Rashid
- Institute of Biological Sciences, Faculty of Science, Universiti Malaya, 50603, Kuala Lumpur, Malaysia
| | - Z H Amelia-Yap
- Higher Institution Centre of Excellence (HICoE), Tropical Infectious Diseases Research and Education Centre (TIDREC), Universiti Malaya, 50603, Kuala Lumpur, Malaysia
| | - H L Lee
- Medical Entomology Unit, Institute for Medical Research, Jalan Pahang, 50588, Kuala Lumpur, Malaysia
| | - M Sofian-Azirun
- Institute of Biological Sciences, Faculty of Science, Universiti Malaya, 50603, Kuala Lumpur, Malaysia
| |
Collapse
|
40
|
Xu L, Meng XL, Bangash SH, Zhang F, Zeng DQ, Tang WW. Effects of itol A on the larval growth and development of Spodoptera frugiperda (Lepidoptera: Noctuidae). Pest Manag Sci 2022; 78:134-142. [PMID: 34453868 DOI: 10.1002/ps.6614] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 08/09/2021] [Accepted: 08/28/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Itol A, extracted from Itoa orientalis Hemsl. (Flacourtiaceae), possesses bioactivity on Spodoptera litura (Lepidoptera: Noctuidae) and Nilaparvata lugens (Stål) (Hemiptera: Delphacidae). Our previous study showed that the effects on Spodoptera frugiperda, a destructive pest found worldwide, were similar to those of fenoxycarb (FC), a juvenile hormone analog. Thus, we speculate that itol A could have growth-regulating effects. The current work explored juvenile hormone (JH) levels and mRNA levels of crucial JH signaling pathway enzyme genes in S. frugiperda larvae treated with itol A and FC. RESULTS Itol A caused severe growth obstacles in S. frugiperda, extended the larval duration and reduced the mean worm weight and body length rates. Three and 7 days after exposure to a sublethal concentration of itol A (500 mg L-1 ), the JH level of the larvae significantly decreased by 36.59% and 22.70%, respectively. qPCR inferred that the mRNA expression levels of crucial JH metabolism enzymes (SfJHE and SfJHEH) significantly increased by 6.58-fold and 2.12-fold, respectively, relative to the control group 3 days after treatment. CONCLUSIONS Itol A adversely affects the development of S. frugiperda. We propose that this effect was caused by decreasing JH levels and disrupting the JH signaling pathway via mediating its synthetic and metabolic crucial enzymes. © 2021 Society of Chemical Industry.
Collapse
Affiliation(s)
- Lin Xu
- Guangxi Key Laboratory of Agric-Environment and Agric-Product Safety, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, People's Republic of China
| | - Xiao-Long Meng
- Guangxi Key Laboratory of Agric-Environment and Agric-Product Safety, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, People's Republic of China
| | - Saqib Hussain Bangash
- Guangxi Key Laboratory of Agric-Environment and Agric-Product Safety, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, People's Republic of China
| | - Fan Zhang
- Guangxi Key Laboratory of Agric-Environment and Agric-Product Safety, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, People's Republic of China
| | - Dong-Qiang Zeng
- Guangxi Key Laboratory of Agric-Environment and Agric-Product Safety, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, People's Republic of China
| | - Wen-Wei Tang
- Guangxi Key Laboratory of Agric-Environment and Agric-Product Safety, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, People's Republic of China
| |
Collapse
|
41
|
Fu B, Ma R, Liu F, Chen X, Teng X, Yang P, Liu J, Zhao D, Sun L. Ginsenosides improve reproductive capability of aged female Drosophila through mechanism dependent on ecdysteroid receptor (ECR) and steroid signaling pathway. Front Endocrinol (Lausanne) 2022; 13:964069. [PMID: 36017314 PMCID: PMC9396376 DOI: 10.3389/fendo.2022.964069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Accepted: 07/18/2022] [Indexed: 11/13/2022] Open
Abstract
Aging ovaries caused diminished fertility and depleted steroid hormone level. Ginsenosides, the active ingredient in ginseng, had estrogen-like hormonal effects. Although ginsenosides were well known for their ability to alleviate many age-related degenerative diseases, the effect of ginsenosides on the decline in reproductive capability caused by aging, as well as the mechanism, are unknown. We found that ginsenosides improved the quantity and quality of the offspring, prolonged life and restored muscle ability in aged female Drosophila. In addition, ginsenosides inhibited ovarian atrophy and maintained steroid hormone 20-Hydroxyecdysone (20E) and juvenile-preserving hormone (JH)) levels. Ginsenosides activated ecdysteroid receptor (ECR) and increased the expression of the early transcription genes E74 and Broad (Br), which triggered steroid signaling pathway. Meanwhile, ginsenosides promoted JH biosynthesis by increasing the expression of Hydroxyl-methylglutaryl-CoA reductase (HMGR) and juvenile hormone acid O-methyltransferase (JHAMT). Subsequently, JH was bound to Methoprene Tolerant (Met) and activated the transcription of the responsive gene Kruppel Homolog 1 (Kr-h1), which coordinated with 20E signaling to promote the reproduction of aged female Drosophila. The reproductive capacity and steroid hormone levels were not improved and the steroid signaling pathway was not activated in ginsenoside-treated ECR knockout Drosophila. This suggested that ginsenosides played a role dependent on targeted ECR. Furthermore, 17 kinds of ginsenoside monomers were identified from the total ginsenosides. Among them, Rg1, Re and Rb1 improved the reproductive capacity and steroid hormone levels of aged female Drosophila, which has similar effects to the total ginsenoside. These results indicated that ginsenosides could enhance the reproductive capacity of aged female Drosophila by activating steroid signals dependent on nuclear receptor ECR. In addition, ginsenoside monomers Rg1, Rb1 and Re are the main active components of total ginsenosides to improve reproductive ability. This will provide strong evidence that ginsenosides had the potential to alleviate age-induced reproductive degradation.
Collapse
Affiliation(s)
- Baoyu Fu
- Research Center of Traditional Chinese Medicine, Affiliated Hospital, Changchun University of Chinese Medicine, Changchun, China
| | - Rui Ma
- Research Center of Traditional Chinese Medicine, Affiliated Hospital, Changchun University of Chinese Medicine, Changchun, China
- *Correspondence: Liwei Sun, ; Rui Ma,
| | - Fangbing Liu
- Jilin Ginseng Academy, Changchun University of Chinese Medicine, Changchun, China
| | - Xuenan Chen
- Research Center of Traditional Chinese Medicine, Affiliated Hospital, Changchun University of Chinese Medicine, Changchun, China
| | - Xiaoyu Teng
- College of Science, Beihua University, Jilin, China
| | - Pengdi Yang
- College of Science, Beihua University, Jilin, China
| | - Jianzeng Liu
- Jilin Ginseng Academy, Changchun University of Chinese Medicine, Changchun, China
| | - Daqing Zhao
- Jilin Ginseng Academy, Changchun University of Chinese Medicine, Changchun, China
- Key Laboratory of Active Substances and Biological Mechanisms of Ginseng Efficacy, Ministry of Education, Changchun University of Chinese Medicine, Changchun, China
| | - Liwei Sun
- Research Center of Traditional Chinese Medicine, Affiliated Hospital, Changchun University of Chinese Medicine, Changchun, China
- Key Laboratory of Active Substances and Biological Mechanisms of Ginseng Efficacy, Ministry of Education, Changchun University of Chinese Medicine, Changchun, China
- *Correspondence: Liwei Sun, ; Rui Ma,
| |
Collapse
|
42
|
Ngonzi AJ, Muyaga LL, Ngowo H, Urio N, Vianney JM, Lwetoijera DW. Susceptibility status of major malaria vectors to novaluron, an insect growth regulator South-Eastern Tanzania. Pan Afr Med J 2022; 41:273. [PMID: 35784600 PMCID: PMC9206179 DOI: 10.11604/pamj.2022.41.273.33793] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 03/21/2022] [Indexed: 11/11/2022] Open
Abstract
Introduction application of Insect Growth Regulator (IGR) such as pyriproxyfen has shown a promising result in controlling malaria transmitting mosquitoes through autodissemination technique. Novaluron that inhibits the chitin development at mosquito larval stage present a promising candidate IGR for rotation with pyriproxyfen to prevent a chance of resistance development. This study assessed the susceptibility of immature stages of Anopheles arabiensis, Anopheles gambiae and Anopheles funestus to novaluron. Methods susceptibility bioassays using technical grade novaluron (98% active ingredient) were performed inside the semi-field system using first instar larvae of Anopheles species. For each tested species, a total of 1500 larvae were used in the bioassay. Concentration range of 0.01 mg/l to 2 mg/l of novaluron were tested to establish Lethal Concentration (LC) sufficient to kills 50%, 90% and 99% of the exposed larvae by using log-dose response analysis. Results of the tested mosquitoes, Anopheles gambiae were highly susceptible to novaluron followed by An. Arabiensis and then An. funestus. Lethal concentrations, LC50, LC90 and LC99 (95%CI) in mg/l for An. gambiae were 0.018, 0.332 and 2.001 respectively. For An. arabiensis were 0.026, 0.546 and 2.013; and for An. funestus were 0.032, 1.00 and 5.580. High larval mortality was recorded at high concentration (2mg/L), with 80% mortality within 3 days post exposure. Conclusion the study demonstrates the efficacy of novaluron in controlling Anopheles mosquito species at immature stages via larval mortality. These findings warrant further testing of novaluron for autodissemination by different vector species for its inclusion in rotation to prevent development of resistance.
Collapse
Affiliation(s)
- Amos Justinian Ngonzi
- Ifakara Health Institute, Environmental Health and Ecological Science Department, PO Box 53, Ifakara, Tanzania
- The Nelson Mandela African Institution of Science and Technology, Department of Life Science and Bio-Engineering, PO BOX 447, Arusha, Tanzania
- Corresponding author: Amos Justinian Ngonzi, Ifakara Health Institute, Environmental Health and Ecological Science Department, PO Box 53, Ifakara, Tanzania.
| | - Letus Laurian Muyaga
- Ifakara Health Institute, Environmental Health and Ecological Science Department, PO Box 53, Ifakara, Tanzania
| | - Halfan Ngowo
- Ifakara Health Institute, Environmental Health and Ecological Science Department, PO Box 53, Ifakara, Tanzania
| | - Naomi Urio
- Ifakara Health Institute, Environmental Health and Ecological Science Department, PO Box 53, Ifakara, Tanzania
- The Nelson Mandela African Institution of Science and Technology, Department of Life Science and Bio-Engineering, PO BOX 447, Arusha, Tanzania
| | - John-Mary Vianney
- The Nelson Mandela African Institution of Science and Technology, Department of Life Science and Bio-Engineering, PO BOX 447, Arusha, Tanzania
| | - Dickson Wilson Lwetoijera
- Ifakara Health Institute, Environmental Health and Ecological Science Department, PO Box 53, Ifakara, Tanzania
- The Nelson Mandela African Institution of Science and Technology, Department of Life Science and Bio-Engineering, PO BOX 447, Arusha, Tanzania
| |
Collapse
|
43
|
Hafez AM, Abbas N. Insecticide resistance to insect growth regulators, avermectins, spinosyns and diamides in Culex quinquefasciatus in Saudi Arabia. Parasit Vectors 2021; 14:558. [PMID: 34715900 PMCID: PMC8555291 DOI: 10.1186/s13071-021-05068-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Accepted: 10/15/2021] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND Culex quinquefasciatus is not only a biting nuisance but also an important vector of fatal diseases. In Saudi Arabia, management measures to control this mosquito and thereby prevent associated disease transmission have focused on insecticides. Nevertheless, information on the resistance status of C. quinquefasciatus is insufficient, especially concerning insecticides containing novel classes of insecticides. METHODS We evaluated six insecticides belonging to four classes of insecticides (insect growth regulators [3], avermectins [1], diamides [1] and spinosyns [1]) for toxicity and resistance in eight C. quinquefasciatus populations (from Ishbiliya, Al-Masfa, Al-Masanie, Al-Washlah, Al-Nakhil, Irqah, Al-Suwaidi and Al-Ghanemiya) following World Health Organisation protocols. RESULTS Resistance status ranging from susceptibility/low resistance to high resistance, in comparison with the susceptible strain, was detected for cyromazine in the eight C. quinquefasciatus populations: Ishbiliya (resistance ratio [RR] = 3.33), Al-Masfa (RR = 4.33), Al-Masanie (RR = 3.67), Al-Washlah (RR = 2.33), Al-Nakhil (RR = 5.33), Irqah (RR = 7.00), Al-Suwaidi (RR = 21.33) and Al-Ghanemiya (RR = 16.00). All C. quinquefasciatus populations exhibited a high level of resistance to diflubenzuron (RR = 13.33-43.33), with the exception of Al-Nakhil which exhibited moderate resistance (RR = 10.00). Susceptibility/low resistance to high resistance was observed for triflumuron in the eight C. quinquefasciatus populations: Ishbiliya (RR = 0.50), Al-Ghanemiya (RR = 3.00), Al-Suwaidi (RR = 10.00), Al-Masfa (RR = 5.00), Al-Masanie (RR = 10.00), Al-Nakhil (RR = 5.00), Irqah (RR = 5.00) and Al-Washlah (RR = 15.00). Susceptibility/low resistance was assessed for abamectin, chlorantraniliprole and spinosad in all C. quinquefasciatus populations, with RR ranges of 0.25-3.50, 0.17-2.19, and 0.02-0.50, respectively. However, the population collected from Irqah showed high resistance to chlorantraniliprole (RR = 11.93). CONCLUSIONS The detection of widespread resistance to insect growth regulators in C. quinquefasciatus highlights an urgent need to establish integrated vector management strategies. Our results may facilitate the selection of potent insecticides for integrated vector management programmes for C. quinquefasciatus.
Collapse
Affiliation(s)
- Abdulwahab M Hafez
- Pesticides and Environmental Toxicology Laboratory, Department of Plant Protection, College of Food and Agriculture Sciences, King Saud University, P.O. Box 2460, Riyadh, 11451, Saudi Arabia.
| | - Naeem Abbas
- Pesticides and Environmental Toxicology Laboratory, Department of Plant Protection, College of Food and Agriculture Sciences, King Saud University, P.O. Box 2460, Riyadh, 11451, Saudi Arabia.
| |
Collapse
|
44
|
Toyofuku M, Fujinaga D, Inaba K, Funahashi T, Fujikawa Y, Inoue H, Kataoka H, Niwa R, Ono H. The plant-derived triterpenoid, cucurbitacin B, but not cucurbitacin E, inhibits the developmental transition associated with ecdysone biosynthesis in Drosophila melanogaster. J Insect Physiol 2021; 134:104294. [PMID: 34389412 DOI: 10.1016/j.jinsphys.2021.104294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 08/06/2021] [Accepted: 08/06/2021] [Indexed: 06/13/2023]
Abstract
In insects, some sterols are essential not only for cell membrane homeostasis, but for biosynthesis of the steroid hormone ecdysone. Dietary sterols are required for insect development because insects cannot synthesize sterols de novo. Therefore, sterol-like compounds that can compete with essential sterols are good candidates for insect growth regulators. In this study, we investigated the effects of the plant-derived triterpenoids, cucurbitacin B and E (CucB and CucE) on the development of the fruit fly, Drosophila melanogaster. To reduce the effects of supply with an excess of sterols contained in food, we reared D. melanogaster larvae on low sterol food (LSF) with or without cucurbitacins. Most larvae raised on LSF without supplementation or with CucE died at the second or third larval instar (L2 or L3) stages, whereas CucB-administered larvae mostly died without molting. The developmental arrest caused by CucB was partially rescued by ecdysone supplementation. Furthermore, we examined the effects of CucB on larval-prepupal transition by transferring larvae from LSF supplemented with cholesterol to that with CucB just after the L2/L3 molt. L3 larvae raised on LSF with CucB failed to pupariate, with a remarkable developmental delay. Ecdysone supplementation rescued the developmental delay but did not rescue the pupariation defect. Furthermore, we cultured the steroidogenic organ, the prothoracic gland (PG) of the silkworm Bombyx mori, with or without cucurbitacin. Ecdysone production in the PG was reduced by incubation with CucB, but not with CucE. These results suggest that CucB acts not only as an antagonist of the ecdysone receptor as previously reported, but also acts as an inhibitor of ecdysone biosynthesis.
Collapse
Affiliation(s)
- Miwako Toyofuku
- Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
| | - Daiki Fujinaga
- Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba 277-8562, Japan
| | - Kazue Inaba
- Graduate School of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan
| | - Tomoki Funahashi
- Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
| | - Yuuta Fujikawa
- School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Hideshi Inoue
- School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Hiroshi Kataoka
- Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba 277-8562, Japan
| | - Ryusuke Niwa
- Life Science Center for Survival Dynamics, Tsukuba Advanced Research Alliance (TARA), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577, Japan
| | - Hajime Ono
- Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan; Life Science Center for Survival Dynamics, Tsukuba Advanced Research Alliance (TARA), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577, Japan.
| |
Collapse
|
45
|
Luo W, Liu S, Zhang W, Yang L, Huang J, Zhou S, Feng Q, Palli SR, Wang J, Roth S, Li S. Juvenile hormone signaling promotes ovulation and maintains egg shape by inducing expression of extracellular matrix genes. Proc Natl Acad Sci U S A 2021; 118:e2104461118. [PMID: 34544864 PMCID: PMC8488625 DOI: 10.1073/pnas.2104461118] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/06/2021] [Indexed: 11/18/2022] Open
Abstract
It is well documented that the juvenile hormone (JH) can function as a gonadotropic hormone that stimulates vitellogenesis by activating the production and uptake of vitellogenin in insects. Here, we describe a phenotype associated with mutations in the Drosophila JH receptor genes, Met and Gce: the accumulation of mature eggs with reduced egg length in the ovary. JH signaling is mainly activated in ovarian muscle cells and induces laminin gene expression in these cells. Meanwhile, JH signaling induces collagen IV gene expression in the adult fat body, from which collagen IV is secreted and deposited onto the ovarian muscles. Laminin locally and collagen IV remotely contribute to the assembly of ovarian muscle extracellular matrix (ECM); moreover, the ECM components are indispensable for ovarian muscle contraction. Furthermore, ovarian muscle contraction externally generates a mechanical force to promote ovulation and maintain egg shape. This work reveals an important mechanism for JH-regulated insect reproduction.
Collapse
Affiliation(s)
- Wei Luo
- Guangdong Provincial Key Laboratory of Insect Developmental Biology and Applied Technology, Institute of Insect Science and Technology and School of Life Sciences, South China Normal University, Guangzhou 510631, China
- Guangmeiyuan R&D Center, Guangdong Provincial Key Laboratory of Insect Developmental Biology and Applied Technology, South China Normal University, Meizhou 514779, China
| | - Suning Liu
- Guangdong Provincial Key Laboratory of Insect Developmental Biology and Applied Technology, Institute of Insect Science and Technology and School of Life Sciences, South China Normal University, Guangzhou 510631, China;
- Guangmeiyuan R&D Center, Guangdong Provincial Key Laboratory of Insect Developmental Biology and Applied Technology, South China Normal University, Meizhou 514779, China
| | - Wenqiang Zhang
- Guangdong Provincial Key Laboratory of Insect Developmental Biology and Applied Technology, Institute of Insect Science and Technology and School of Life Sciences, South China Normal University, Guangzhou 510631, China
| | - Liu Yang
- Guangdong Provincial Key Laboratory of Insect Developmental Biology and Applied Technology, Institute of Insect Science and Technology and School of Life Sciences, South China Normal University, Guangzhou 510631, China
| | - Jianhua Huang
- Institute of Insect Sciences, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Shutang Zhou
- Key Laboratory of Plant Stress Biology, State Key Laboratory of Cotton Biology, School of Life Sciences, Henan University, Kaifeng 475004, China
| | - Qili Feng
- Guangdong Provincial Key Laboratory of Insect Developmental Biology and Applied Technology, Institute of Insect Science and Technology and School of Life Sciences, South China Normal University, Guangzhou 510631, China
| | - Subba Reddy Palli
- Department of Entomology, College of Agriculture, Food, and Environment, University of Kentucky, Lexington, KY 40546
| | - Jian Wang
- Department of Entomology, University of Maryland, College Park, MD 20742
| | - Siegfried Roth
- Institute for Zoology, University of Cologne, D-50674 Cologne, Germany
| | - Sheng Li
- Guangdong Provincial Key Laboratory of Insect Developmental Biology and Applied Technology, Institute of Insect Science and Technology and School of Life Sciences, South China Normal University, Guangzhou 510631, China;
- Guangmeiyuan R&D Center, Guangdong Provincial Key Laboratory of Insect Developmental Biology and Applied Technology, South China Normal University, Meizhou 514779, China
| |
Collapse
|
46
|
Zhang Z, Ma Y, Ma X, Hu H, Wang D, Song X, Ren X, Ma Y. Combined Transcriptomic Analysis and RNA Interference Reveal the Effects of Methoxyfenozide on Ecdysone Signaling Pathway of Spodoptera exigua. Int J Mol Sci 2021; 22:ijms22169080. [PMID: 34445782 PMCID: PMC8396458 DOI: 10.3390/ijms22169080] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 08/17/2021] [Accepted: 08/19/2021] [Indexed: 12/05/2022] Open
Abstract
Spodoptera exigua is a worldwide pest afflicting edible vegetables and has developed varying levels of resistance to insecticides. Methoxyfenozide (MET), an ecdysteroid agonist, is effective against lepidopteran pests such as S. exigua. However, the mechanism of MET to S. exigua remains unclear. In this study, we analyzed the expression patterns of genes related to the ecdysone signaling pathway in transcriptome data treated with sublethal doses of MET and analyzed how expression levels of key genes affect the toxicity of MET on S. exigua. Our results demonstrated that 2639 genes were up-regulated and 2512 genes were down-regulated in S. exigua treated with LC30 of MET. Of these, 15 genes were involved in the ecdysone signaling pathway. qPCR results demonstrated that ecdysone receptor A (EcRA) expression levels significantly increased in S. exigua when treated with different doses of MET, and that the RNAi-mediated silencing of EcRA significantly increased mortality to 55.43% at 72 h when L3 S. exigua larvae were exposed to MET at the LC30 dose. Additionally, knocking down EcRA suppressed the most genes expressed in the ecdysone signaling pathway. The combination of MET and dsEcRA affected the expression of E74 and enhanced the expression of TREA. These results demonstrate that the adverse effects of sublethal MET disturb the ecdysone signaling pathway in S. exigua, and EcRA is closely related to MET toxic effect. This study increases our collective understanding of the mechanisms of MET in insect pests.
Collapse
Affiliation(s)
- Zhixian Zhang
- Zhengzhou Research Base, State Key Laboratory of Cotton Biology, Zhengzhou University, Zhengzhou 450001, China; (Z.Z.); (X.M.)
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China; (Y.M.); (H.H.); (D.W.); (X.S.)
| | - Yajie Ma
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China; (Y.M.); (H.H.); (D.W.); (X.S.)
| | - Xiaoyan Ma
- Zhengzhou Research Base, State Key Laboratory of Cotton Biology, Zhengzhou University, Zhengzhou 450001, China; (Z.Z.); (X.M.)
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China; (Y.M.); (H.H.); (D.W.); (X.S.)
| | - Hongyan Hu
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China; (Y.M.); (H.H.); (D.W.); (X.S.)
| | - Dan Wang
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China; (Y.M.); (H.H.); (D.W.); (X.S.)
| | - Xianpeng Song
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China; (Y.M.); (H.H.); (D.W.); (X.S.)
| | - Xiangliang Ren
- Zhengzhou Research Base, State Key Laboratory of Cotton Biology, Zhengzhou University, Zhengzhou 450001, China; (Z.Z.); (X.M.)
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China; (Y.M.); (H.H.); (D.W.); (X.S.)
- Correspondence: (X.R.); or (Y.M.)
| | - Yan Ma
- Zhengzhou Research Base, State Key Laboratory of Cotton Biology, Zhengzhou University, Zhengzhou 450001, China; (Z.Z.); (X.M.)
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China; (Y.M.); (H.H.); (D.W.); (X.S.)
- Correspondence: (X.R.); or (Y.M.)
| |
Collapse
|
47
|
Ortiz-Alvarado Y, Fernández-Casas R, Ortiz-Alvarado CA, Diaz-Iglesias E, Rivera-Marchand B. Behavioral flexibility in Wasmannia auropunctata (Hymenoptera: Formicidae). J Insect Sci 2021; 21:16. [PMID: 34436597 PMCID: PMC8388608 DOI: 10.1093/jisesa/ieab059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Indexed: 06/13/2023]
Abstract
Worker division of labor is a defining trait in social insects. Many species are characterized by having behavioral flexibility where workers perform non-typical tasks for their age depending on the colony's needs. Worker division of labor and behavioral flexibility were examined in the little fire ant Wasmannia auropunctata (Roger, 1863), for which age-related division of labor has been found. Young workers perform nursing duties which include tending of brood and queens, and colony defense, while older workers forage. When nurses were experimentally removed from the colony, foragers were observed carrying out nursing and colony defense duties, yet when foragers were removed nurses did not forage precociously. We also administered juvenile hormone analog, methoprene, to workers. When methoprene was applied, foragers increased their nursing and defense activities while nurses became mainly idle. The behavioral flexibility of foragers of the little fire ant may be evidence of an expansion of worker's repertoires as they age; older workers can perform tasks they have already done in their life while young individuals are not capable of performing tasks ahead of time. This may be an important adaptation associated with the success of this ant as an invasive species.
Collapse
Affiliation(s)
| | - Rafael Fernández-Casas
- Department of Natural Sciences and Mathematics, Inter American University, Bayamon, Puerto Rico
| | | | | | - Bert Rivera-Marchand
- Department of Natural Sciences and Mathematics, Inter American University, Bayamon, Puerto Rico
| |
Collapse
|
48
|
Hamaidia K, Soltani N. Methoxyfenozide, a Molting Hormone Agonist, Affects Autogeny Capacity, Oviposition, Fecundity, and Fertility in Culex pipiens (Diptera: Culicidae). J Med Entomol 2021; 58:1004-1011. [PMID: 33247298 DOI: 10.1093/jme/tjaa260] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Indexed: 06/12/2023]
Abstract
The current study aimed to evaluate the effects of methoxyfenozide (RH-2485), an insect growth disrupter (IGD) belonging to molting hormone agonist class, against female adults of Culex pipiens L. under laboratory conditions. Lethal concentrations (LC50 = 24.54 µg/liter and LC90 = 70.79 µg/liter), previously determined against fourth instar larvae, were tested for adult female fertility, fecundity and oviposition after tarsal contact before mating and any bloodmeal. Methoxyfenozide was found to alter negatively their autogeny capacity and oviposition. A strong reduction of 56% and 72% (P < 0.001) in females' autogeny capacity was observed in both treated series, respectively. Alteration in oviposition were found to be higher with LC90 (OAI-LC90 = -0.62) than with the LC50 (OAI-LC50 = -0.42). Also fecundity and hatching rate (fertility) were significantly reduced in treated series as compared to controls. A significant reduction of 37.65 and 28.23% in fecundity and decrease of 56.85 and 71.87% in fertility were found, respectively in LC50 and LC90 treated series. Obtained data clearly demonstrated that methoxyfenozide have significant depressive effect on reproductive potential against medically important vector with minimizing ecotoxicological risks in mosquitoes management.
Collapse
Affiliation(s)
- Kaouther Hamaidia
- Department of Biology, Faculty of Nature and Life Sciences, Mohamed Cherif Messaadia University, Souk-Ahras, Algeria
- Laboratory of Applied Animal Biology, Faculty of Sciences, Department of Biology, University Badji Mokhtar of Annaba, Annaba, Algeria
| | - Noureddine Soltani
- Laboratory of Applied Animal Biology, Faculty of Sciences, Department of Biology, University Badji Mokhtar of Annaba, Annaba, Algeria
| |
Collapse
|
49
|
Poyraz Tinartas E, Goncu E, Koc K. Apoptotic and autophagic characteristics of perivisceral fat body remodeling of the greater wax moth Galleria mellonella and effects of juvenile hormone analog, fenoxycarb, on these processes. Arch Insect Biochem Physiol 2021; 107:e21780. [PMID: 33687111 DOI: 10.1002/arch.21780] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 02/06/2021] [Accepted: 02/08/2021] [Indexed: 06/12/2023]
Abstract
In holometabolous insects, many tissues and organs such as the fat body and midgut undergo a remodeling process during metamorphosis. Larval fat body cells are eliminated by programmed cell death (PCD), while tissue cells that adapt to adult life are formed by stem cells. In this study, we analyzed the features of the remodeling period of Galleria mellonella fat body in terms of PCD types, apoptotic and autophagic cell death characteristics. Besides, the effects of juvenile hormone (JH) on these processes were evaluated under the modified hormonal conditions via applications of JH analog, fenoxycarb. Several hallmarks of apoptotic and autophagic cell death were analyzed by morphological, biochemical, and molecular methods. The results of the present study have ascertained that the degeneration process of larval cells occurs via autophagic cell death accompanied by caspase-3 activity during the pupal period and it is regulated by 20-hydroxyecdysone (20HE) mediated by ecdysone receptor B1 (EcR-B1). Increased activity of the acid phosphatase and upregulation of ATG6 and ATG8 in parallel with the formation of autophagosomes in the fat body of Galleria during the pupal period strongly indicated that autophagy was the key player in the remodeling processes.
Collapse
Affiliation(s)
- Esen Poyraz Tinartas
- Biology Department, Science and Literature Faculty, Manisa Celal Bayar University, Manisa, Turkey
| | - Ebru Goncu
- Biology Department, Science Faculty, Ege University, İzmir, Turkey
| | - Kamil Koc
- Biology Department, Science and Literature Faculty, Manisa Celal Bayar University, Manisa, Turkey
| |
Collapse
|
50
|
Abbas N, Hafez AM. Resistance to insect growth regulators and age-stage, two-sex life table in Musca domestica from different dairy facilities. PLoS One 2021; 16:e0248693. [PMID: 33831013 PMCID: PMC8031857 DOI: 10.1371/journal.pone.0248693] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Accepted: 03/03/2021] [Indexed: 01/29/2023] Open
Abstract
Among the vectorial insect pests, the domestic house fly (Musca domestica L., Diptera: Muscidae) is a ubiquitous livestock pest with the ability to develop resistance and adapt to diverse climates. Successful management of the house fly in various locations requires information about its resistance development and life table features. The status of insect growth regulators resistance and life table features on the basis of age, stage, and two sexes of the house fly from five different geographical locations of Riyadh, Saudi Arabia: Dirab, Al-Masanie, Al-Washlah, Al-Uraija and Al-Muzahmiya were therefore investigated. The range of resistance levels were 3.77–8.03-fold for methoxyfenozide, 5.50–29.75 for pyriproxyfen, 0.59–2.91-fold for cyromazine, 9.33–28.67-fold for diflubenzuron, and 1.63–8.25-fold for triflumuron in five populations of house fly compared with the susceptible strain. Analysis of life history parameters—such as survival rate, larval duration, pupal duration, pre-female duration, pre-male duration, adult and total pre-oviposition periods, longevity of male, oviposition period, female ratio, and fecundity female-1—revealed significant variations among the field populations. Additionally, demographic features—including the generation time, the finite and intrinsic rates of increase, doubling time, and net reproductive rate—varied significantly among the field populations. These results will be helpful in planning the management of the house fly in geographically isolated dairies in Saudi Arabia.
Collapse
Affiliation(s)
- Naeem Abbas
- Pesticides and Environmental Toxicology Laboratory, Department of Plant Protection, College of Food and Agriculture Sciences, King Saud University, Riyadh, Saudi Arabia
- * E-mail: (NA); (AMH)
| | - Abdulwahab M. Hafez
- Pesticides and Environmental Toxicology Laboratory, Department of Plant Protection, College of Food and Agriculture Sciences, King Saud University, Riyadh, Saudi Arabia
- * E-mail: (NA); (AMH)
| |
Collapse
|