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Zhang L, Ni R, Chen J, Yang J, Dong Y, Yuchi Z, Tan Y. Molecular Detection of kdr and superkdr Mutation Sites and Analysis of the Binding Modes of Pyrethroid Insecticides with Voltage-Gated Sodium Channels in the Plant Bug Lygus pratensis (Hemiptera: Miridae). JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024. [PMID: 39225681 DOI: 10.1021/acs.jafc.4c03416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/04/2024]
Abstract
This study identified genetic mutations linked to resistance to pyrethroid insecticides in the plant pest Lygus pratensis. The voltage-gated sodium channel (VGSC) gene was cloned, revealing two mutations (Met918Thr and Leu1014Phe) in laboratory strains and field populations from Inner Mongolia, resulting in variable pyrethroid resistance. A 3D model of LpVGSC was created using homology modeling, and pyrethroid binding patterns were analyzed via molecular docking. Molecular dynamics simulations confirmed structural stability changes and binding stability of pyrethroids to VGSC sites. Mutation frequencies of homozygous and heterozygous genotypes did not exceed 40 and 20%, respectively. Toxicity tests showed high resistance to λ-cyhalothrin (LC50:401.31 ng/cm2). The kdr (L1014F) and superkdr (M918T) mutations weakened interaction forces, reducing pyrethroid binding. M918T and L1014F mutations are predicted to reduce Type I pyrethroid affinity, suggesting Type II pyrethroids may be more effective against resistant strains. These findings aid in resistance management and insecticide design.
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Affiliation(s)
- Liqi Zhang
- College of Horticulture and Plant Protection, Inner Mongolia Agricultural University, Hohhot 010019, China
- Research Center for Grassland Entomology, Inner Mongolian Agricultural University, Hohhot 010019, China
| | - Ruoyao Ni
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100083, China
| | - Jing Chen
- College of Horticulture and Plant Protection, Inner Mongolia Agricultural University, Hohhot 010019, China
- Research Center for Grassland Entomology, Inner Mongolian Agricultural University, Hohhot 010019, China
| | - Jiale Yang
- College of Horticulture and Plant Protection, Inner Mongolia Agricultural University, Hohhot 010019, China
- Research Center for Grassland Entomology, Inner Mongolian Agricultural University, Hohhot 010019, China
| | - Yawen Dong
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for Research and Development of Fine Chemicals, Guizhou University, Guiyang 550025, China
| | - Zhiguang Yuchi
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, Collaborative Innovation Center of Chemical Science and Engineering, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Yao Tan
- College of Horticulture and Plant Protection, Inner Mongolia Agricultural University, Hohhot 010019, China
- Research Center for Grassland Entomology, Inner Mongolian Agricultural University, Hohhot 010019, China
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100083, China
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Li YY, Deligeer, Liu J, Shi K. Genome-wide identification and coexpression network analysis of heat shock protein superfamily in Apolygus lucorum. ARCHIVES OF INSECT BIOCHEMISTRY AND PHYSIOLOGY 2024; 116:e22145. [PMID: 39183528 DOI: 10.1002/arch.22145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2024] [Revised: 08/06/2024] [Accepted: 08/07/2024] [Indexed: 08/27/2024]
Abstract
Heat shock proteins (Hsp) function as crucial molecular chaperones, playing pivotal roles in insects' response to stress stimuli. Apolygus lucorum, known for its broad spectrum of host plants and significant crop damage potential, presents a compelling subject for understanding stress response mechanisms. Hsp is important for A. lucorum to tolerate temperature and insecticide stress and may be involved in the formation of resistance to the interactive effects of temperature and insecticide. Here, we employed comprehensive genomic approaches to identify Hsp superfamily members in its genome. In total, we identified 42 Hsp genes, including 3 Hsp90, 16 Hsp70, 13 Hsp60, and 10 Hsp20. Notably, we conducted motif analysis and gene structures for Hsp members, which suggested the same families are relatively conserved. Furthermore, leveraging the weighted gene coexpression network analysis, we observed diverse expression patterns of different Hsp types across various tissues, with certain Hsp70 showing tissue-specific bias. Noteworthy among the highly expressed Hsp genes was testis-specific, which may serve as a pivotal hub gene regulating the gene network. Our findings shed light on the molecular evolutionary dynamics and temperature stress response mechanisms of Hsp genes in A. lucorum, offering insights into its adaptive strategies and potential targets for pest management.
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Affiliation(s)
- Yuan-Yuan Li
- College of Grassland Science, Inner Mongolia Minzu University, Tongliao, China
| | - Deligeer
- College of Grassland Science, Inner Mongolia Minzu University, Tongliao, China
| | - Jing Liu
- College of Grassland Science, Inner Mongolia Minzu University, Tongliao, China
| | - Kai Shi
- College of Grassland Science, Inner Mongolia Minzu University, Tongliao, China
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3
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Gao H, Tian Y, Zhang H, Li Y, Li C, Li B. Species-specific duplicated FMRFaR-like gene A62 regulates spontaneous locomotion in Apolygus lucorum. PEST MANAGEMENT SCIENCE 2024; 80:3358-3368. [PMID: 38385791 DOI: 10.1002/ps.8039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 02/05/2024] [Accepted: 02/22/2024] [Indexed: 02/23/2024]
Abstract
BACKGROUND Apolygus lucorum, a major cotton pest, has undergone a significant expansion of the FMRFaR gene within the GPCR superfamily, resulting in two classes of GPCR, namely FMRFaR (A54-55) and newly duplicated FMRFaR-like (A56-62). Notably, FMRFaR-like genes, particularly A62, show enhanced expression in the legs and wings of adults, indicating their potential role in locomotion. Employing A62 as a representative of FMRFaR-like, our study investigates the influence of FMRFa, FMRFaR, and FMRFaR-like on locomotion and development of A. lucorum. RESULTS FMRFaR and FMRFa exhibit comparable temporal and tissue expression patterns, whereas the FMRFaR-like genes within A. lucorum exhibit completely distinct evolutionary and expression patterns compared to classical FMRFaR. RNA interference (RNAi) experiments revealed that suppressing FMRFa expression results in complete lethality in A. lucorum, but neither FMRFaR nor A62 exhibit the same effect after RNAi. Suppressing the expression of FMRFa only decreases the expression of the A54 gene simultaneously, suggesting that A54 may function as a classical FMRFaR activated by FMRFa. RNAi of A62 leads to wing malformation and a significant reduction in spontaneous movement behavior in A. lucorum. Further transcriptomic analysis revealed that A62 affects the A. lucorum's movement behavior through energy metabolism pathways and motor protein pathways. CONCLUSION Our study unveils the unique and complex roles of FMRFa and its receptor in A. lucorum. These findings provide valuable insights into potential targets for pest control strategies aimed at managing A. lucorum populations in cotton fields. © 2024 Society of Chemical Industry.
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Affiliation(s)
- Han Gao
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Ying Tian
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Hui Zhang
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Yanxiao Li
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Chenjun Li
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Bin Li
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
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Du Y, Scheibener S, Zhu Y, Portilla M, Zhang M. Resistance risk assessment of six pyrethroids and acephate toward the resistant adult tarnished plant bug, Lygus lineolaris. INSECT SCIENCE 2024; 31:792-802. [PMID: 37850504 DOI: 10.1111/1744-7917.13280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 07/31/2023] [Accepted: 08/31/2023] [Indexed: 10/19/2023]
Abstract
Due to rapidly developed resistance, pest management relies less on pyrethroids to control economically damaging infestations of the tarnished plant bug (TPB), Lygus lineolaris (Palisot de Beauvois) in cotton fields of Mississippi. Yet, pyrethroid resistance remains prevalent in TPB populations. This study assessed the resistance levels in adult TPB to six common pyrethroids and acephate. Resistant TBPs were collected from wild host plants in late October after harvest in the Mississippi Delta region of the United States. Based on LC50 values, the field-resistant TPBs displayed higher resistance to permethrin, esfenvalerate, and bifenthrin (approximately 30 fold) and moderate resistance to λ-cyhalothrin, β-cyfluthrin, ζ-cypermethrin, and acephate (approximately 15 fold). Further investigations showed that the inhibitors of three detoxification enzyme, triphenyl phosphate (TPP), diethyl maleate (DEM), and piperonyl butoxide (PBO) had synergistic effects on permethrin, λ-cyhalothrin, and bifenthrin in resistant TPBs. Furthermore, elevated esterase, GST, and P450 activities were significantly expressed in field-resistant TPBs. Additionally, GST and esterase were reduced after 48 h exposure to certain pyrethroids at LC50 dose. The synergistic and biochemical assays consistently indicated that P450 and esterase were involved in pyrethroid detoxification in TPBs. This study provides valuable information for the continued use of pyrethroids and acephate in controlling TPBs in cotton fields in the Mississippi Delta region of the United States.
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Affiliation(s)
- Yuzhe Du
- USDA-ARS, Southern Insect Management Research Unit, Stoneville, USA
| | - Shane Scheibener
- USDA-ARS, Southern Insect Management Research Unit, Stoneville, USA
| | - Yucheng Zhu
- USDA-ARS, Pollinator Health in Southern Crop Ecosystem Research Unit, Stoneville, USA
| | - Maribel Portilla
- USDA-ARS, Southern Insect Management Research Unit, Stoneville, USA
| | - Mingling Zhang
- USDA-ARS, Southern Insect Management Research Unit, Stoneville, USA
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Cardoso JCR, Mc Shane JC, Li Z, Peng M, Power DM. Revisiting the evolution of Family B1 GPCRs and ligands: Insights from mollusca. Mol Cell Endocrinol 2024; 586:112192. [PMID: 38408601 DOI: 10.1016/j.mce.2024.112192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 02/19/2024] [Accepted: 02/20/2024] [Indexed: 02/28/2024]
Abstract
Family B1 G protein-coupled receptors (GPCRs) are one of the most well studied neuropeptide receptor families since they play a central role in many biological processes including endocrine, gastrointestinal, cardiovascular and reproduction in animals. The genes for these receptors emerged from a common ancestral gene in bilaterian genomes and evolved via gene/genome duplications and deletions in vertebrate and invertebrate genomes. Their existence and function have mostly been characterized in vertebrates and few studies exist in invertebrate species. Recently, an increased interest in molluscs, means a series of genomes have become available, and since they are less modified than insect and nematode genomes, they are ideal to explore the origin and evolution of neuropeptide gene families. This review provides an overview of Family B1 GPCRs and their peptide ligands and incorporates new data obtained from Mollusca genomes and taking a comparative approach challenges existing models on their origin and evolution.
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Affiliation(s)
- João C R Cardoso
- Comparative Endocrinology and Integrative Biology, Centre of Marine Sciences, Universidade do Algarve, Campus de Gambelas, 8005-139, Faro, Portugal.
| | - Jennifer C Mc Shane
- Comparative Endocrinology and Integrative Biology, Centre of Marine Sciences, Universidade do Algarve, Campus de Gambelas, 8005-139, Faro, Portugal
| | - Zhi Li
- Comparative Endocrinology and Integrative Biology, Centre of Marine Sciences, Universidade do Algarve, Campus de Gambelas, 8005-139, Faro, Portugal
| | - Maoxiao Peng
- Comparative Endocrinology and Integrative Biology, Centre of Marine Sciences, Universidade do Algarve, Campus de Gambelas, 8005-139, Faro, Portugal
| | - Deborah M Power
- Comparative Endocrinology and Integrative Biology, Centre of Marine Sciences, Universidade do Algarve, Campus de Gambelas, 8005-139, Faro, Portugal; International Research Center for Marine Biosciences, Ministry of Science and Technology, Shanghai Ocean University, Shanghai, China; Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, Shanghai, China
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6
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Arthur BP, Suh CPC, McKnight BM, Parajulee MN, Yang F, Chappell TM, Kerns DL. Evaluation of Cotton Fleahopper ( Pseudatomoscelis seriatus (Reuter)) Feeding on Mpp51Aa2-Traited Cotton Utilizing Electrical Penetration Graph (EPG) Waveforms. INSECTS 2024; 15:316. [PMID: 38786872 PMCID: PMC11122483 DOI: 10.3390/insects15050316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2024] [Revised: 04/21/2024] [Accepted: 04/25/2024] [Indexed: 05/25/2024]
Abstract
Prior to the recent implementation of the Mpp51Aa2 pesticidal protein (ThryvOn), transgenic cotton cultivars have historically offered no control of the cotton fleahopper (Pseudatomocelis seriatus (Reuter)). To evaluate the feeding behavior of cotton fleahoppers on ThryvOn cotton, electropenetrography (EPG) using a Giga-8 DC instrument was used to monitor the probing activity of fourth- and fifth-instar cotton fleahopper nymphs on both ThryvOn and non-ThryvOn cotton squares. Nymphs were individually placed on an excised cotton square for 8 h of EPG recording, after which resulting waveforms were classified as non-probing, cell rupturing, or ingestion. Although there were significantly more cell rupturing events per insect on ThryvOn (mean ± SEM, 14.8 ± 1.7) than on non-ThryvOn squares (mean ± SEM, 10.3 ± 1.6), there was no difference attributable to ThryvOn in the average number of ingestion events per insect. However, the average duration of ingestion events was significantly shorter on squares with ThryvOn (mean ± SEM, 509 ± 148 s) than on squares without (mean ± SEM, 914 ± 135 s). This suggests that cotton fleahoppers continued to probe despite their inability to sustain ingestion. These results provide conclusive evidence that the Mpp51Aa2 pesticidal protein affects the feeding behavior of cotton fleahopper nymphs.
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Affiliation(s)
- Brady P. Arthur
- Department of Entomology, Texas A&M University, College Station, TX 77843, USA;
| | - Charles P.-C. Suh
- USDA-ARS Southern Plains Agricultural Research Center, College Station, TX 77845, USA
| | - Benjamin M. McKnight
- Department of Soil and Crop Sciences, Texas A&M University, College Station, TX 77843, USA
| | - Megha N. Parajulee
- AgriLife Research and Extension Center, Texas A&M University, Lubbock, TX 79403, USA
| | - Fei Yang
- Department of Entomology, University of Minnesota, St. Paul, MN 55108, USA
| | - Thomas M. Chappell
- Department of Plant Pathology and Microbiology, Texas A&M University, College Station, TX 77843, USA
| | - David L. Kerns
- Department of Entomology, Texas A&M University, College Station, TX 77843, USA;
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Lu H, Zheng S, Ma C, Gao X, Ji J, Luo J, Hua H, Cui J. Integrated Omics Analysis Reveals Key Pathways in Cotton Defense against Mirid Bug ( Adelphocoris suturalis Jakovlev) Feeding. INSECTS 2024; 15:254. [PMID: 38667384 PMCID: PMC11049813 DOI: 10.3390/insects15040254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Revised: 04/05/2024] [Accepted: 04/06/2024] [Indexed: 04/28/2024]
Abstract
The recent dominance of Adelphocoris suturalis Jakovlev as the primary cotton field pest in Bt-cotton-cultivated areas has generated significant interest in cotton pest control research. This study addresses the limited understanding of cotton defense mechanisms triggered by A. suturalis feeding. Utilizing LC-QTOF-MS, we analyzed cotton metabolomic changes induced by A. suturalis, and identified 496 differential positive ions (374 upregulated, 122 downregulated) across 11 categories, such as terpenoids, alkaloids, phenylpropanoids, flavonoids, isoflavones, etc. Subsequent iTRAQ-LC-MS/MS analysis of the cotton proteome revealed 1569 differential proteins enriched in 35 metabolic pathways. Integrated metabolome and proteome analysis highlighted significant upregulation of 17 (89%) proteases in the α-linolenic acid (ALA) metabolism pathway, concomitant with a significant increase in 14 (88%) associated metabolites. Conversely, 19 (73%) proteases in the fructose and mannose biosynthesis pathway were downregulated, with 7 (27%) upregulated proteases corresponding to the downregulation of 8 pathway-associated metabolites. Expression analysis of key regulators in the ALA pathway, including allene oxidase synthase (AOS), phospholipase A (PLA), allene oxidative cyclase (AOC), and 12-oxophytodienoate reductase3 (OPR3), demonstrated significant responses to A. suturalis feeding. Finally, this study pioneers the exploration of molecular mechanisms in the plant-insect relationship, thereby offering insights into potential novel control strategies against this cotton pest.
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Affiliation(s)
- Hui Lu
- National Key Laboratory of Cotton Bio-Breeding and Integrated Utilization, Chinese Academy of Agricultural Sciences, No. 38, Huanghe Road, Anyang 455000, China; (H.L.); (J.J.); (J.L.)
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant, Science and Technology, Huazhong Agricultural University, Wuhan 430070, China;
- Green Agricultural Products Safety and Warning Laboratory, Research Center of Soil Resource Comprehensive Utilization and Ecological Environment in Western Inner Mongolia, Hetao College, Bayannur 015000, China
| | - Shuaichao Zheng
- Henan Institute of Science and Technology, College of Life Science, Hualan St. 90, Xinxiang 453003, China;
| | - Chao Ma
- Anhui Provincial Center for Disease Control and Prevention, Hefei 230601, China;
| | - Xueke Gao
- National Key Laboratory of Cotton Bio-Breeding and Integrated Utilization, Chinese Academy of Agricultural Sciences, No. 38, Huanghe Road, Anyang 455000, China; (H.L.); (J.J.); (J.L.)
| | - Jichao Ji
- National Key Laboratory of Cotton Bio-Breeding and Integrated Utilization, Chinese Academy of Agricultural Sciences, No. 38, Huanghe Road, Anyang 455000, China; (H.L.); (J.J.); (J.L.)
| | - Junyu Luo
- National Key Laboratory of Cotton Bio-Breeding and Integrated Utilization, Chinese Academy of Agricultural Sciences, No. 38, Huanghe Road, Anyang 455000, China; (H.L.); (J.J.); (J.L.)
| | - Hongxia Hua
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant, Science and Technology, Huazhong Agricultural University, Wuhan 430070, China;
| | - Jinjie Cui
- National Key Laboratory of Cotton Bio-Breeding and Integrated Utilization, Chinese Academy of Agricultural Sciences, No. 38, Huanghe Road, Anyang 455000, China; (H.L.); (J.J.); (J.L.)
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Han P, Rodriguez-Saona C, Zalucki MP, Liu SS, Desneux N. A theoretical framework to improve the adoption of green Integrated Pest Management tactics. Commun Biol 2024; 7:337. [PMID: 38499741 PMCID: PMC10948852 DOI: 10.1038/s42003-024-06027-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Accepted: 03/08/2024] [Indexed: 03/20/2024] Open
Abstract
Sustainable agriculture relies on implementing effective, eco-friendly crop protection strategies. However, the adoption of these green tactics by growers is limited by their high costs resulting from the insufficient integration of various components of Integrated Pest Management (IPM). In response, we propose a framework within IPM termed Multi-Dimensional Management of Multiple Pests (3MP). Within this framework, a spatial dimension considers the interactive effects of soil-crop-pest-natural enemy networks on pest prevalence, while a time dimension addresses pest interactions over the crop season. The 3MP framework aims to bolster the adoption of green IPM tactics, thereby extending environmental benefits beyond crop protection.
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Affiliation(s)
- Peng Han
- Institute of Biodiversity, School of Ecology and Environmental Sciences, Yunnan University, Kunming, 650500, China.
- Southwest United Graduate School (SWUGS), Kunming, 650092, China.
| | - Cesar Rodriguez-Saona
- Department of Entomology, Rutgers University P.E. Marucci Center, Chatsworth, NJ, USA.
| | - Myron P Zalucki
- School of the Environment, The University of Queensland, Brisbane, QLD, 4072, Australia
- Shandong Engineering Research Center for Environment-Friendly Agricultural Pest Management, College of Plant Health and Medicine, Qingdao Agricultural University, Qingdao, 266109, China
| | - Shu-Sheng Liu
- Institute of Insect Sciences, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China
| | - Nicolas Desneux
- Université Cote d'Azur, INRAE, CNRS, UMR ISA, 06000, Nice, France
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Zhang JY, Zhao J, Zhu-Salzman K, Ji QQ, Jiang YP, Xiao LB, Xu DJ, Xu GC, Ge LQ, Tan YA. Gene cloning, protein expression, and enzymatic characterization of a double-stranded RNA degrading enzyme in Apolygus lucorum. INSECT SCIENCE 2024; 31:119-133. [PMID: 37287390 DOI: 10.1111/1744-7917.13211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 03/27/2023] [Accepted: 04/02/2023] [Indexed: 06/09/2023]
Abstract
RNA interference (RNAi) is a powerful tool that post-transcriptionally silences target genes in eukaryotic cells. However, silencing efficacy varies greatly among different insect species. Recently, we met with little success when attempting to knock down genes in the mirid bug Apolygus lucorum via dsRNA injection. The disappearance of double-stranded RNA (dsRNA) could be a potential factor that restricts RNAi efficiency. Here, we found that dsRNA can be degraded in midgut fluids, and a dsRNase of A. lucorum (AldsRNase) was identified and characterized. Sequence alignment indicated that its 6 key amino acid residues and the Mg2+ -binding site were similar to those of other insects' dsRNases. The signal peptide and endonuclease non-specific domain shared high sequence identity with the brown-winged green stinkbug Plautia stali dsRNase. AldsRNase showed high salivary gland and midgut expression and was continuously expressed through the whole life cycle, with peaks at the 4th instar ecdysis in the whole body. The purified AldsRNase protein obtained by heterologously expressed can rapidly degrade dsRNA. When comparing the substrate specificity of AldsRNase, 3 specific substrates (dsRNA, small interfering RNA, and dsDNA) were all degraded, and the most efficient degradation is dsRNA. Subsequently, immunofluorescence revealed that AldsRNase was expressed in the cytoplasm of midgut cells. Through cloning and functional study of AldsRNase, the enzyme activity and substrate specificity of the recombinant protein, as well as the subcellular localization of nuclease, the reason for the disappearance of dsRNA was explained, which was useful in improving RNAi efficiency in A. lucorum and related species.
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Affiliation(s)
- Jie-Yu Zhang
- College of Plant Protection, Yangzhou University, Yangzhou, Jiangsu Province, China
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, Jiangsu Province, China
| | - Jing Zhao
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, Jiangsu Province, China
| | - Keyan Zhu-Salzman
- Department of Entomology, Texas A&M University, College Station, TX, USA
| | - Qin-Qin Ji
- Taizhou Customs of the People's Republic of China, Taizhou, Jiangsu Province, China
| | - Yi-Ping Jiang
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, Jiangsu Province, China
| | - Liu-Bin Xiao
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, Jiangsu Province, China
| | - De-Jin Xu
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, Jiangsu Province, China
| | - Guang-Chun Xu
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, Jiangsu Province, China
| | - Lin-Quan Ge
- College of Plant Protection, Yangzhou University, Yangzhou, Jiangsu Province, China
| | - Yong-An Tan
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, Jiangsu Province, China
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10
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Lu Y, Wyckhuys KAG, Wu K. Pest Status, Bio-Ecology, and Area-Wide Management of Mirids in East Asia. ANNUAL REVIEW OF ENTOMOLOGY 2024; 69:393-413. [PMID: 37758221 DOI: 10.1146/annurev-ento-121322-015345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/03/2023]
Abstract
Mirids (Hemiptera: Heteroptera: Miridae) feed upon a wide variety of cultivated and wild plants and can be economically important crop pests. They have traditionally been perceived as innocuous herbivores in East Asia; however, population levels of various mirid species have dramatically increased over the past decades. High-profile pests such as Apolygus spp., Adelphocoris spp., and Lygus spp. are now widely distributed across the region, and their infestation pressure is associated with climate, agroecological conditions, and farming practices. This review outlines how an in-depth understanding of pest biology, a systems-level characterization of pest ecology, and a comprehensive evaluation of integrated pest management tactics have enabled sustainable management of mirids across crop boundaries and harvest cycles. This work underscores how more holistic, integrative research approaches can accelerate the implementation of area-wide management of generalist pests, effectively prevent pest population build-up and yield impact, and shrink the environmental footprint of agriculture. In addition to highlighting the merits of interdisciplinary systems approaches, we discuss prospects and challenges for the sustainable management of polyphagous mirid pests in landscape matrices.
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Affiliation(s)
- Yanhui Lu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, PR China; ,
| | - Kris A G Wyckhuys
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, PR China; ,
- School of Biological Sciences, University of Queensland, Brisbane, Queensland, Australia;
- Chrysalis Consulting, Hanoi, Vietnam
| | - Kongming Wu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, PR China; ,
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Tang Y, Wu S, He H, Gao Q, Ding W, Xue J, Qiu L, Li Y. The CsmiR1579-CsKr-h1 module mediates rice stem borer development and reproduction: An effective target for transgenic insect-resistant rice. Int J Biol Macromol 2024; 254:127752. [PMID: 38287594 DOI: 10.1016/j.ijbiomac.2023.127752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 10/11/2023] [Accepted: 10/27/2023] [Indexed: 01/31/2024]
Abstract
The rice stem borer (RSB, Chilo suppressalis) is a significant agricultural pest that mainly depends on chemical control. However, it has grown to varied degrees of pesticide resistance, which poses a severe threat to rice production and emphasizes the need for safer, more efficient alternative pest management strategies. Here, in vitro and in vivo experiments analyses reveal miR-1579 binds to the critical transcription factor Krüppel homologue 1 (Kr-h1) and negatively regulates its expression. Overexpression of miR-1579 in larvae with significantly lower levels of Kr-h1 was associated with a decline in larval growth and survival. Furthermore, in female pupae, miR-1579 overexpression led to abnormalities in ovarian development, suggesting that targeting miR-1579 could be a potential management strategy against C. suppressalis. Therefore, we generated transgenic rice expressing miR-1579 and screened three lines that had a single copy of highly abundant mature miR-1579 transcripts. Expectedly, fed with transgenic miR-1579 rice lines were significantly lower survival rates in larvae and high levels of resistance to damage caused by C. suppressalis infestation. These findings suggest that miRNA-mediated RNAi could provide an effective and species-specific strategy for C. suppressalis control.
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Affiliation(s)
- Yan Tang
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, College of Plant Protection, Hunan Agricultural University, Changsha 410128, China
| | - Shuang Wu
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, College of Plant Protection, Hunan Agricultural University, Changsha 410128, China
| | - Hualiang He
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, College of Plant Protection, Hunan Agricultural University, Changsha 410128, China
| | - Qiao Gao
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, College of Plant Protection, Hunan Agricultural University, Changsha 410128, China
| | - Wenbing Ding
- National Research Center of Engineering & Technology for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha 410128, China; Hunan Provincial Engineering & Technology Research Center for Biopesticide and Formulation Processing, Changsha 410128, China
| | - Jin Xue
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, College of Plant Protection, Hunan Agricultural University, Changsha 410128, China
| | - Lin Qiu
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, College of Plant Protection, Hunan Agricultural University, Changsha 410128, China.
| | - Youzhi Li
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, College of Plant Protection, Hunan Agricultural University, Changsha 410128, China; National Research Center of Engineering & Technology for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha 410128, China.
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12
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Sun L, Alariqi M, Wang Y, Wang Q, Xu Z, Zafar MN, Yang G, Jia R, Hussain A, Chen Y, Ding X, Zhou J, Wang G, Wang F, Li J, Zou J, Zhu X, Yu L, Sun Y, Liang S, Hui F, Chen L, Guo W, Wang Y, Zhu H, Lindsey K, Nie X, Zhang X, Jin S. Construction of Host Plant Insect-Resistance Mutant Library by High-Throughput CRISPR/Cas9 System and Identification of A Broad-Spectrum Insect Resistance Gene. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2306157. [PMID: 38032126 PMCID: PMC10811493 DOI: 10.1002/advs.202306157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 10/17/2023] [Indexed: 12/01/2023]
Abstract
Insects pose significant challenges in cotton-producing regions. Here, they describe a high-throughput CRISPR/Cas9-mediated large-scale mutagenesis library targeting endogenous insect-resistance-related genes in cotton. This library targeted 502 previously identified genes using 968 sgRNAs, generated ≈2000 T0 plants and achieved 97.29% genome editing with efficient heredity, reaching upto 84.78%. Several potential resistance-related mutants (10% of 200 lines) their identified that may contribute to cotton-insect molecular interaction. Among these, they selected 139 and 144 lines showing decreased resistance to pest infestation and targeting major latex-like protein 423 (GhMLP423) for in-depth study. Overexpression of GhMLP423 enhanced insect resistance by activating the plant systemic acquired resistance (SAR) of salicylic acid (SA) and pathogenesis-related (PR) genes. This activation is induced by an elevation of cytosolic calcium [Ca2+ ]cyt flux eliciting reactive oxygen species (ROS), which their demoted in GhMLP423 knockout (CR) plants. Protein-protein interaction assays revealed that GhMLP423 interacted with a human epidermal growth factor receptor substrate15 (EPS15) protein at the cell membrane. Together, they regulated the systemically propagating waves of Ca2+ and ROS, which in turn induced SAR. Collectively, this large-scale mutagenesis library provides an efficient strategy for functional genomics research of polyploid plant species and serves as a solid platform for genetic engineering of insect resistance.
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Affiliation(s)
- Lin Sun
- Hubei Hongshan LaboratoryNational Key Laboratory of Crop Genetic ImprovementHuazhong Agricultural UniversityWuhanHubei430070P. R. China
- Institute of Industrial CropsShandong Academy of Agricultural SciencesJinanShandong250100China
| | - Muna Alariqi
- Hubei Hongshan LaboratoryNational Key Laboratory of Crop Genetic ImprovementHuazhong Agricultural UniversityWuhanHubei430070P. R. China
- Department of Agronomy and Pastures, Faculty of AgricultureSana’a UniversitySana’aYemen
| | - Yaxin Wang
- Hubei Hongshan LaboratoryNational Key Laboratory of Crop Genetic ImprovementHuazhong Agricultural UniversityWuhanHubei430070P. R. China
| | - Qiongqiong Wang
- Hubei Hongshan LaboratoryNational Key Laboratory of Crop Genetic ImprovementHuazhong Agricultural UniversityWuhanHubei430070P. R. China
| | - Zhongping Xu
- Hubei Hongshan LaboratoryNational Key Laboratory of Crop Genetic ImprovementHuazhong Agricultural UniversityWuhanHubei430070P. R. China
| | - Muhammad Naeem Zafar
- Hubei Hongshan LaboratoryNational Key Laboratory of Crop Genetic ImprovementHuazhong Agricultural UniversityWuhanHubei430070P. R. China
| | - Guangqin Yang
- Hubei Hongshan LaboratoryNational Key Laboratory of Crop Genetic ImprovementHuazhong Agricultural UniversityWuhanHubei430070P. R. China
| | - Ruoyu Jia
- Hubei Hongshan LaboratoryNational Key Laboratory of Crop Genetic ImprovementHuazhong Agricultural UniversityWuhanHubei430070P. R. China
| | - Amjad Hussain
- Hubei Hongshan LaboratoryNational Key Laboratory of Crop Genetic ImprovementHuazhong Agricultural UniversityWuhanHubei430070P. R. China
| | - Yilin Chen
- Hubei Hongshan LaboratoryNational Key Laboratory of Crop Genetic ImprovementHuazhong Agricultural UniversityWuhanHubei430070P. R. China
| | - Xiao Ding
- Hubei Hongshan LaboratoryNational Key Laboratory of Crop Genetic ImprovementHuazhong Agricultural UniversityWuhanHubei430070P. R. China
| | - Jiawei Zhou
- Hubei Hongshan LaboratoryNational Key Laboratory of Crop Genetic ImprovementHuazhong Agricultural UniversityWuhanHubei430070P. R. China
| | - Guanying Wang
- Hubei Hongshan LaboratoryNational Key Laboratory of Crop Genetic ImprovementHuazhong Agricultural UniversityWuhanHubei430070P. R. China
| | - Fuqiu Wang
- Hubei Hongshan LaboratoryNational Key Laboratory of Crop Genetic ImprovementHuazhong Agricultural UniversityWuhanHubei430070P. R. China
| | - Jianying Li
- Hubei Hongshan LaboratoryNational Key Laboratory of Crop Genetic ImprovementHuazhong Agricultural UniversityWuhanHubei430070P. R. China
| | - Jiawei Zou
- Hubei Hongshan LaboratoryNational Key Laboratory of Crop Genetic ImprovementHuazhong Agricultural UniversityWuhanHubei430070P. R. China
| | - Xiangqian Zhu
- Hubei Hongshan LaboratoryNational Key Laboratory of Crop Genetic ImprovementHuazhong Agricultural UniversityWuhanHubei430070P. R. China
| | - Lu Yu
- Hubei Hongshan LaboratoryNational Key Laboratory of Crop Genetic ImprovementHuazhong Agricultural UniversityWuhanHubei430070P. R. China
| | - Yiwen Sun
- Hubei Hongshan LaboratoryNational Key Laboratory of Crop Genetic ImprovementHuazhong Agricultural UniversityWuhanHubei430070P. R. China
| | - Sijia Liang
- Hubei Hongshan LaboratoryNational Key Laboratory of Crop Genetic ImprovementHuazhong Agricultural UniversityWuhanHubei430070P. R. China
| | - Fengjiao Hui
- Hubei Hongshan LaboratoryNational Key Laboratory of Crop Genetic ImprovementHuazhong Agricultural UniversityWuhanHubei430070P. R. China
| | - Luo Chen
- Hubei Hongshan LaboratoryNational Key Laboratory of Crop Genetic ImprovementHuazhong Agricultural UniversityWuhanHubei430070P. R. China
| | - Weifeng Guo
- Xinjiang Production and Construction Corps Key Laboratory of Protection and Utilization of Biological Resources in Tarim BasinTarim UniversityAlaerXinjiang843300China
| | - Yanqin Wang
- Xinjiang Production and Construction Corps Key Laboratory of Protection and Utilization of Biological Resources in Tarim BasinTarim UniversityAlaerXinjiang843300China
| | - Huaguo Zhu
- College of Biology and Agricultural ResourcesHuanggang Normal UniversityHuanggangHubei438000China
| | - Keith Lindsey
- Department of BiosciencesDurham UniversityDurhamDH1 3LEUK
| | - Xinhui Nie
- Key Laboratory of Oasis Ecology Agricultural of Xinjiang BingtuanAgricultural CollegeShihezi UniversityShiheziXinjiangChina
| | - Xianlong Zhang
- Hubei Hongshan LaboratoryNational Key Laboratory of Crop Genetic ImprovementHuazhong Agricultural UniversityWuhanHubei430070P. R. China
| | - Shuangxia Jin
- Hubei Hongshan LaboratoryNational Key Laboratory of Crop Genetic ImprovementHuazhong Agricultural UniversityWuhanHubei430070P. R. China
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13
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Arthur BP, Suh CP, McKnight BM, Parajulee MN, Yang F, Kerns DL. Field Evaluation of Cotton Expressing Mpp51Aa2 as a Management Tool for Cotton Fleahoppers, Pseudatomoscelis seriatus (Reuter). Toxins (Basel) 2023; 15:644. [PMID: 37999507 PMCID: PMC10675519 DOI: 10.3390/toxins15110644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 11/02/2023] [Accepted: 11/03/2023] [Indexed: 11/25/2023] Open
Abstract
The cotton fleahopper (Pseudatomoscelis seriatus Reuter) is considered a highly economically damaging pest of cotton (Gossypium hirsutum L.) in Texas and Oklahoma. Current control methods rely heavily on the use of foliar-applied chemical insecticides, but considering the cost of insecticides and the critical timeliness of applications, chemical control methods are often not optimized to reduce potential yield losses from this pest. The Bacillus thuringiensis (Bt) Mpp51Aa2 (formerly Cry51Aa2.834_16) protein has proven effective against thrips and plant bugs with piercing and sucking feeding behaviors, but the impact of this toxin on cotton fleahoppers has not been investigated. To evaluate the Mpp51Aa2 trait effectiveness towards the cotton fleahopper, field trials were conducted in 2019, 2020, and 2021, comparing a cotton cultivar containing the Mpp51Aa2 trait to a non-traited isoline cultivar under insecticide-treated and untreated conditions. Populations of cotton fleahopper nymphs and adults were estimated weekly by visually inspecting cotton terminals. Square retention was also assessed during the first week of bloom to provide some insight on how the Bt trait may influence yield. While cotton fleahopper population differences between the traited and non-traited plants were not consistently noted during the pre-bloom squaring period, there was a consistent increase in square retention in cotton expressing Mpp51Aa2 relative to non-traited cotton. Additionally, cotton expressing Mpp51Aa2 offered similar square protection relative to non-traited cotton treated with insecticides for the cotton fleahopper. These findings indicate that the Mpp51Aa2 protein should provide benefits of delayed nymphal growth, population suppression, and increased square retention.
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Affiliation(s)
- Brady P. Arthur
- Department of Entomology, Texas A&M University, College Station, TX 77843, USA;
| | - Charles P. Suh
- USDA-ARS Southern Plains Agricultural Research Center, College Station, TX 77845, USA;
| | - Benjamin M. McKnight
- Department of Soil and Crop Sciences, Texas A&M University, College Station, TX 77843, USA;
| | - Megha N. Parajulee
- AgriLife Research and Extension Center, Texas A&M University, Lubbock, TX 79403, USA;
| | - Fei Yang
- Department of Entomology, University of Minnesota, St. Paul, MN 55108, USA;
| | - David L. Kerns
- Department of Entomology, Texas A&M University, College Station, TX 77843, USA;
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14
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Han B, Zhang L, Geng L, Jia H, Wang J, Ke L, Li A, Gao J, Wu T, Lu Y, Liu F, Song H, Wei X, Ma S, Zhan H, Wu Y, Liu Y, Wang Q, Diao Q, Zhang J, Dai P. Greater wax moth control in apiaries can be improved by combining Bacillus thuringiensis and entrapments. Nat Commun 2023; 14:7073. [PMID: 37925529 PMCID: PMC10625538 DOI: 10.1038/s41467-023-42946-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Accepted: 10/26/2023] [Indexed: 11/06/2023] Open
Abstract
The greater wax moth (GWM), Galleria mellonella (Lepidoptera: Pyralidae), is a major bee pest that causes significant damage to beehives and results in economic losses. Bacillus thuringiensis (Bt) appears as a potential sustainable solution to control this pest. Here, we develop a novel Bt strain (designated BiotGm) that exhibits insecticidal activity against GWM larvae with a LC50 value lower than 2 μg/g, and low toxicity levels to honey bee with a LC50 = 20598.78 μg/mL for larvae and no observed adverse effect concentration = 100 μg/mL for adults. We design an entrapment method consisting of a lure for GWM larvae, BiotGm, and a trapping device that prevents bees from contacting the lure. We find that this method reduces the population of GWM larvae in both laboratory and field trials. Overall, these results provide a promising direction for the application of Bt-based biological control of GWM in beehives, although further optimization remain necessary.
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Affiliation(s)
- Bo Han
- State Key Laboratory of Resource Insects, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Li Zhang
- State Key Laboratory of Resource Insects, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Lili Geng
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Huiru Jia
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Jian Wang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Li Ke
- State Key Laboratory of Resource Insects, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Airui Li
- State Key Laboratory of Resource Insects, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Jing Gao
- State Key Laboratory of Resource Insects, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Tong Wu
- State Key Laboratory of Resource Insects, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Ying Lu
- State Key Laboratory of Resource Insects, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Feng Liu
- Jiangxi Institute of Apicultural Research, Nanchang, 330201, China
| | - Huailei Song
- Shanxi Agricultural University, Taiyuan, 030006, China
| | - Xiaoping Wei
- Modern Agricultural Development Institute, Guizhou Academy of Agricultural Sciences, Guiyang, 550006, China
| | - Shilong Ma
- Enshi Academy of Agricultural Sciences, Enshi, 445002, China
| | - Hongping Zhan
- Modern Agricultural Development Institute, Guizhou Academy of Agricultural Sciences, Guiyang, 550006, China
| | - Yanyan Wu
- State Key Laboratory of Resource Insects, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Yongjun Liu
- State Key Laboratory of Resource Insects, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Qiang Wang
- State Key Laboratory of Resource Insects, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Qingyun Diao
- State Key Laboratory of Resource Insects, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Jie Zhang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Pingli Dai
- State Key Laboratory of Resource Insects, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing, 100193, China.
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15
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Li Q, Yin Z, Tan W, Sun X, Cao H, Wang D. The resistance of the jujube (Ziziphus jujuba) to the devastating insect pest Apolygus lucorum (Hemiptera, Insecta) involves the jasmonic acid signaling pathway. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2023; 196:105597. [PMID: 37945226 DOI: 10.1016/j.pestbp.2023.105597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 08/28/2023] [Accepted: 08/28/2023] [Indexed: 11/12/2023]
Abstract
Apolygus lucorum (Hemiptera, Insecta), cosmopolitan true bug, is a major pest of the Chinese jujube (Ziziphus jujuba). To propose control measures of A. lucorum, we investigated the molecular mechanisms of resistance in two varieties of jujube (wild jujube and winter jujube) with different sensitivities to this pest. We monitored changes of two species of jujube in the transcriptome, jasmonic acid (JA) and salicylic acid (SA) content, and the expression of genes involved in signaling pathways. The preference of A. lucorum for jujube with exogenous SA and methyl jasmonate (MeJA) were also examined. The results showed that wild jujube leaves infested by A. lucorum showed stronger resistance and non-selectivity to A. lucorum than winter jujube. By comparing data from the A. lucorum infested plants with the control, A total of 438 and 796 differentially expressed genes (DEGs) were found in winter and wild jujube leaves, respectively. GO analysis revealed that biological process termed "plant-pathogen interactions", "plant hormone transduction" and "phenylpropanoid biosynthesis". Most of DEGs enriched in JA pathways were upregulated, while most DEGs of SA pathways were downregulated. A. lucorum increased the JA content but decreased the SA content in jujube. Consistently, the JA and SA contents in winter jujube were lower than those in wild jujube leaves. The key genes ZjFAD3, ZjLOX, ZjAOS, ZjAOC3 and ZjAOC4 involved in JA synthesis of jujube leaves were significantly up-regulated after A. lucorum infestation, especially the expression and up-regulation ratio of ZjFAD3, ZjLOX and ZjAOS in wild jujube were significantly higher than those in winter jujube. MeJA-treated jujube showed an obvious repellent effect on A. lucorum. Based on these findings, we conclude that A. lucorum infestation of jujube induced the JA pathway and suppressed the SA pathway. In jujube leaves the ZjFAD3, ZjLOX and ZjAOS played important roles in increasing of JA content in jujube leaves. Thus, JA played an important role in repelling and resisting against A. lucorum in jujube.
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Affiliation(s)
- Qingliang Li
- College of Life Sciences, Zaozhuang University, Zaozhuang 277160, China
| | - Zujun Yin
- Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China
| | - Wei Tan
- College of Food Science and Pharmaceutical Engineering, Zaozhuang University, Zaozhuang 277160, China.
| | - Xia Sun
- College of Life Sciences, Zaozhuang University, Zaozhuang 277160, China
| | - Hui Cao
- College of Life Sciences, Zaozhuang University, Zaozhuang 277160, China
| | - Deya Wang
- College of Life Sciences, Zaozhuang University, Zaozhuang 277160, China
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16
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Boss A, Romeis J, Meissle M. Prey-mediated effects of mCry51Aa2-producing cotton on the predatory nontarget bug Orius majusculus (Reuter). INSECT SCIENCE 2023; 30:1191-1206. [PMID: 36385458 DOI: 10.1111/1744-7917.13143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 10/25/2022] [Accepted: 10/27/2022] [Indexed: 06/16/2023]
Abstract
Genetically engineered (GE) cotton, MON 88702, is protected against certain sucking pests, such as plant bugs and thrips, by producing mCry51Aa2, a modified protein from Bacillus thuringiensis (Bt). Predatory pirate bugs (Orius spp.), natural enemies contributing to biological pest control, are also sensitive to the insecticidal protein when exposed continuously to high concentrations. We evaluated effects of MON 88702 on Orius majusculus when fed prey types with different mCry51Aa2 concentrations. When neonates were provided exclusively Tetranychus urticae spider mites reared on MON 88702 (high mCry51Aa2 content), adverse effects on predator survival and development were confirmed, compared with specimens fed prey from near-isogenic non-Bt cotton. When fed a mixture of T. urticae and Ephestia kuehniella eggs (mCry51Aa2-free), predator life table parameters were similar to the treatment where eggs were fed exclusively. When mCry51Aa2-containing spider mites were provided for a limited time at the beginning or the end of juvenile development, effects were less pronounced. While pirate bug nymphs showed similar consumption rates for prey from Bt and non-Bt cotton, choice experiments revealed a preference for E. kuehniella eggs over spider mites. Lepidopteran larvae (Spodoptera littoralis, high mCry51Aa2 content) or cotton aphids (Aphis gossypii, mCry51Aa2-free) reared on MON 88702 as alternative prey did not result in adverse effects on O. majusculus. Our study suggests limited risk of mCry51Aa2-producing cotton for O. majusculus, because its sensitivity for the Bt protein is relatively low and its natural food consists of diverse prey species with varying concentrations of Bt protein.
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Affiliation(s)
- Anja Boss
- Research Division Agroecology and Environment, Agroscope, Zürich, Switzerland
- Institute of Plant Sciences, University of Bern, Bern, Switzerland
| | - Jörg Romeis
- Research Division Agroecology and Environment, Agroscope, Zürich, Switzerland
- Institute of Plant Sciences, University of Bern, Bern, Switzerland
| | - Michael Meissle
- Research Division Agroecology and Environment, Agroscope, Zürich, Switzerland
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17
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Wei W, Stewart CN. Biosafety and Ecological Assessment of Genetically Engineered and Edited Crops. PLANTS (BASEL, SWITZERLAND) 2023; 12:2551. [PMID: 37447112 DOI: 10.3390/plants12132551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Accepted: 06/29/2023] [Indexed: 07/15/2023]
Abstract
Nearly three decades have passed since the first commercial cultivation of genetically engineered (GE) crops [...].
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Affiliation(s)
- Wei Wei
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
| | - Charles Neal Stewart
- Department of Plant Sciences and Center for Agricultural Synthetic Biology, 112 Plant Biotechnology Building, University of Tennessee, Knoxville, TN 37996, USA
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18
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Tan Y, Xiao L, Zhao J, Zhang J, Ahmad S, Xu D, Xu G, Ge L. Adenosine Monophosphate-Activated Protein Kinase (AMPK) Phosphorylation Is Required for 20-Hydroxyecdysone Regulates Ecdysis in Apolygus lucorum. Int J Mol Sci 2023; 24:ijms24108587. [PMID: 37239932 DOI: 10.3390/ijms24108587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 05/05/2023] [Accepted: 05/07/2023] [Indexed: 05/28/2023] Open
Abstract
The plant mirid bug Apolygus lucorum is an omnivorous pest that can cause considerable economic damage. The steroid hormone 20-hydroxyecdysone (20E) is mainly responsible for molting and metamorphosis. The adenosine monophosphate-activated protein kinase (AMPK) is an intracellular energy sensor regulated by 20E, and its activity is regulated allosterically through phosphorylation. It is unknown whether the 20E-regulated insect's molting and gene expression depends on the AMPK phosphorylation. Herein, we cloned the full-length cDNA of the AlAMPK gene in A. lucorum. AlAMPK mRNA was detected at all developmental stages, whereas the dominant expression was in the midgut and, to a lesser extent, in the epidermis and fat body. Treatment with 20E and AMPK activator 5-aminoimidazole-4-carboxamide-1-β-d-ribofuranoside (AlCAR) or only AlCAR resulted in activation of AlAMPK phosphorylation levels in the fat body, probed with an antibody directed against AMPK phosphorylated at Thr172, enhancing AlAMPK expression, whereas no phosphorylation occurred with compound C. Compared to compound C, 20E and/or AlCAR increased the molting rate, the fifth instar nymphal weight and shortened the development time of A. lucorum in vitro by inducing the expression of EcR-A, EcR-B, USP, and E75-A. Similarly, the knockdown of AlAMPK by RNAi reduced the molting rate of nymphs, the weight of fifth-instar nymphs and blocked the developmental time and the expression of 20E-related genes. Moreover, as observed by TEM, the thickness of the epidermis of the mirid was significantly increased in 20E and/or AlCAR treatments, molting spaces began to form between the cuticle and epidermal cells, and the molting progress of the mirid was significantly improved. These composite data indicated that AlAMPK, as a phosphorylated form in the 20E pathway, plays an important role in hormonal signaling and, in short, regulating insect molting and metamorphosis by switching its phosphorylation status.
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Affiliation(s)
- Yongan Tan
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Liubin Xiao
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Jing Zhao
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Jieyu Zhang
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
- College of Plant Protection, Yangzhou University, Yangzhou 225009, China
| | - Sheraz Ahmad
- College of Plant Protection, Yangzhou University, Yangzhou 225009, China
| | - Dejin Xu
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Guangchun Xu
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Linquan Ge
- College of Plant Protection, Yangzhou University, Yangzhou 225009, China
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19
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Lv N, Li R, Cheng S, Zhang L, Liang P, Gao X. The gut symbiont Sphingomonas mediates imidacloprid resistance in the important agricultural insect pest Aphis gossypii Glover. BMC Biol 2023; 21:86. [PMID: 37069589 PMCID: PMC10111731 DOI: 10.1186/s12915-023-01586-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2022] [Accepted: 03/30/2023] [Indexed: 04/19/2023] Open
Abstract
BACKGROUND Neonicotinoid insecticides are applied worldwide for the control of agricultural insect pests. The evolution of neonicotinoid resistance has led to the failure of pest control in the field. The enhanced detoxifying enzyme activity and target mutations play important roles in the resistance of insects to neonicotinoid resistance. Emerging evidence indicates a central role of the gut symbiont in insect pest resistance to pesticides. Existing reports suggest that symbiotic microorganisms could mediate pesticide resistance by degrading pesticides in insect pests. RESULTS The 16S rDNA sequencing results showed that the richness and diversity of the gut community between the imidacloprid-resistant (IMI-R) and imidacloprid-susceptible (IMI-S) strains of the cotton aphid Aphis gossypii showed no significant difference, while the abundance of the gut symbiont Sphingomonas was significantly higher in the IMI-R strain. Antibiotic treatment deprived Sphingomonas of the gut, followed by an increase in susceptibility to imidacloprid in the IMI-R strain. The susceptibility of the IMI-S strain to imidacloprid was significantly decreased as expected after supplementation with Sphingomonas. In addition, the imidacloprid susceptibility in nine field populations, which were all infected with Sphingomonas, increased to different degrees after treatment with antibiotics. Then, we demonstrated that Sphingomonas isolated from the gut of the IMI-R strain could subsist only with imidacloprid as a carbon source. The metabolic efficiency of imidacloprid by Sphingomonas reached 56% by HPLC detection. This further proved that Sphingomonas could mediate A. gossypii resistance to imidacloprid by hydroxylation and nitroreduction. CONCLUSIONS Our findings suggest that the gut symbiont Sphingomonas, with detoxification properties, could offer an opportunity for insect pests to metabolize imidacloprid. These findings enriched our knowledge of mechanisms of insecticide resistance and provided new symbiont-based strategies for control of insecticide-resistant insect pests with high Sphingomonas abundance.
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Affiliation(s)
- Nannan Lv
- Department of Entomology, China Agricultural University, Beijing, 100193, China
| | - Ren Li
- Department of Entomology, China Agricultural University, Beijing, 100193, China
| | - Shenhang Cheng
- Department of Entomology, China Agricultural University, Beijing, 100193, China
| | - Lei Zhang
- Department of Entomology, China Agricultural University, Beijing, 100193, China
| | - Pei Liang
- Department of Entomology, China Agricultural University, Beijing, 100193, China.
| | - Xiwu Gao
- Department of Entomology, China Agricultural University, Beijing, 100193, China
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20
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Feng H, Chen W, Hussain S, Shakir S, Tzin V, Adegbayi F, Ugine T, Fei Z, Jander G. Horizontally transferred genes as RNA interference targets for aphid and whitefly control. PLANT BIOTECHNOLOGY JOURNAL 2023; 21:754-768. [PMID: 36577653 PMCID: PMC10037149 DOI: 10.1111/pbi.13992] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 12/14/2022] [Accepted: 12/22/2022] [Indexed: 06/01/2023]
Abstract
RNA interference (RNAi)-based technologies are starting to be commercialized as a new approach for agricultural pest control. Horizontally transferred genes (HTGs), which have been transferred into insect genomes from viruses, bacteria, fungi or plants, are attractive targets for RNAi-mediated pest control. HTGs are often unique to a specific insect family or even genus, making it unlikely that RNAi constructs targeting such genes will have negative effects on ladybugs, lacewings and other beneficial predatory insect species. In this study, we sequenced the genome of a red, tobacco-adapted isolate of Myzus persicae (green peach aphid) and bioinformatically identified 30 HTGs. We then used plant-mediated virus-induced gene silencing (VIGS) to show that several HTGs of bacterial and plant origin are important for aphid growth and/or survival. Silencing the expression of fungal-origin HTGs did not affect aphid survivorship but decreased aphid reproduction. Importantly, although there was uptake of plant-expressed RNA by Coccinella septempunctata (seven-spotted ladybugs) via the aphids that they consumed, we did not observe negative effects on ladybugs from aphid-targeted VIGS constructs. To demonstrate that this approach is more broadly applicable, we also targeted five Bemisia tabaci (whitefly) HTGs using VIGS and demonstrated that knockdown of some of these genes affected whitefly survival. As functional HTGs have been identified in the genomes of numerous pest species, we propose that these HTGs should be explored further as efficient and safe targets for control of insect pests using plant-mediated RNA interference.
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Affiliation(s)
| | - Wenbo Chen
- Boyce Thompson InstituteIthacaNYUSA
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative BiologyZhejiang UniversityHangzhouChina
| | - Sonia Hussain
- Boyce Thompson InstituteIthacaNYUSA
- Present address:
National Institute for Biotechnology and Genetic Engineering CollegePakistan Institute of Engineering and Applied SciencesFaisalabadPakistan
| | - Sara Shakir
- Boyce Thompson InstituteIthacaNYUSA
- Present address:
Gembloux Agro‐Bio Tech InstituteThe University of LiegeGemblouxBelgium
| | - Vered Tzin
- Boyce Thompson InstituteIthacaNYUSA
- Present address:
Jacob Blaustein Institutes for Desert ResearchBen‐Gurion University of the NegevSede BoqerIsrael
| | - Femi Adegbayi
- Boyce Thompson InstituteIthacaNYUSA
- Present address:
Drexel University College of MedicinePhiladelphiaPAUSA
| | - Todd Ugine
- Department of EntomologyCornell UniversityIthacaNYUSA
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21
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Soe ET, Naing ZL, Zhang C, Niu LL, Tang J, Yu S, Ding Z, Liang G. Cry51Aa Proteins Are Active against Apolygus lucorum and Show a Mechanism Similar to Pore Formation Model. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:2279-2289. [PMID: 36710440 DOI: 10.1021/acs.jafc.2c07244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Reduced insecticide spray in crop fields due to the widespread adoption of Bacillus thuringiensis (Bt) crops has favored the population increases of mirid bugs. Cry51Aa proteins are new types of Bt proteins that belong to aerolysin-like β pore-forming proteins with insecticidal activity against hemipteran and coleopteran pests. Here, we studied the activity of Bt Cry51Aa1 and Cry51Aa2 against Apolygus lucorum, an emerging pest in cotton, and their mechanism of action. Cry51Aa1 exhibited almost 5-fold higher toxicity than Cry51Aa2 with LC50 of 11.87 and 61.34 μg/mL, respectively. Protoxins could be activated both in vitro, by trypsin and midgut contents, and in vivo, by A. lucorum midgut. Both Cry51Aa protoxins were processed in two steps, producing pre-activated (∼30 kDa) and final activated (∼25-28 kDa) proteins. Cry51Aa proteins bound to a 25 kDa midgut protein, and Cry51Aa2 showed 2 times higher binding affinity than Cry51Aa1. Incubating Cry51Aa proteins with midgut homogenate resulted in toxin oligomers of 150-200 kDa. Our findings provide a theoretical basis for using Cry51Aa proteins to control A. lucorum and a better understanding of their mode of action.
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Affiliation(s)
- Ei Thinzar Soe
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, West Yuanmingyuan Road, Beijing 100193, People Republic of China
| | - Zaw Lin Naing
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, West Yuanmingyuan Road, Beijing 100193, People Republic of China
| | - Caihong Zhang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, West Yuanmingyuan Road, Beijing 100193, People Republic of China
| | - Lin Lin Niu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, West Yuanmingyuan Road, Beijing 100193, People Republic of China
| | - Jinrong Tang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, West Yuanmingyuan Road, Beijing 100193, People Republic of China
| | - Siqi Yu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, West Yuanmingyuan Road, Beijing 100193, People Republic of China
| | - Zhongwei Ding
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, West Yuanmingyuan Road, Beijing 100193, People Republic of China
| | - Gemei Liang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, West Yuanmingyuan Road, Beijing 100193, People Republic of China
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22
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Chen R, Luo J, Zhu X, Wang L, Zhang K, Li D, Gao X, Niu L, Huangfu N, Ma X, Ji J, Cui J. Dynamic changes in species richness and community diversity of symbiotic bacteria in five reproductive morphs of cotton aphid Aphis gossypii Glover (Hemiptera: Aphididae). Front Microbiol 2023; 13:1086728. [PMID: 36713208 PMCID: PMC9877530 DOI: 10.3389/fmicb.2022.1086728] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Accepted: 12/21/2022] [Indexed: 01/13/2023] Open
Abstract
Introduction Reproductive polymorphism and symbiotic bacteria are commonly observed in aphids, but their interaction remains largely unclear. In polymorphic aphid species (Aphis gossypii), offspring of parthenogenetic females (PFs) develops into sexuparae which produces gynoparae and males successively. Gynoparae further produces sexual females (SFs), and these sexual females mate with males to produce offspring. Methods In this study, we investigated the dynamic changes of symbiotic bacteria during the above-mentioned five reproductive morph switch in A. gossypii via 16S rRNA sequencing technology. Results The results showed that species richness and community diversity of symbiotic bacteria in males were the highest. Proteobacteria was absolutely dominant bacterial phylum (with relative abundance of more than 90%) in the five reproductive morphs of A. gossypii, and Buchnera was absolutely dominant genus (with relative abundance of >90%), followed by Rhodococcus, Pseudomonas, and Pantoea. Male-killing symbiont Arsenophonus presented the highest relative abundance in gynoparae, a specific morph whose offsprings were exclusively sexual females. Both principal component analysis (PCA) and clustering analysis showed trans-generation similarity in microbial community structure between sexuparae and sexual females, between PFs and gynoparae. PICRUSt 2 analysis showed that symbiotic bacteria in the five reproductive morphs were mainly enriched in metabolic pathways. Discussion Reproductive morph switch induced by environmental changes might be associated with bacterial community variation and sexual polymorphism of aphids. This study provides a new perspective for further deciphering the interactions between microbes and reproductive polymorphism in host aphids.
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Affiliation(s)
- Ruifang Chen
- Zhengzhou Research Base, State Key Laboratory of Cotton Biology, School of Agricultural Sciences, Zhengzhou University, Zhengzhou, China,State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China
| | - Junyu Luo
- Zhengzhou Research Base, State Key Laboratory of Cotton Biology, School of Agricultural Sciences, Zhengzhou University, Zhengzhou, China,State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China,Western Agricultural Research Center, Chinese Academy of Agricultural Sciences, Changji, China
| | - Xiangzhen Zhu
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China
| | - Li Wang
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China
| | - Kaixin Zhang
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China,Western Agricultural Research Center, Chinese Academy of Agricultural Sciences, Changji, China
| | - Dongyang Li
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China
| | - Xueke Gao
- Zhengzhou Research Base, State Key Laboratory of Cotton Biology, School of Agricultural Sciences, Zhengzhou University, Zhengzhou, China,State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China,Western Agricultural Research Center, Chinese Academy of Agricultural Sciences, Changji, China
| | - Lin Niu
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China
| | - Ningbo Huangfu
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China
| | - Xiaoyan Ma
- Zhengzhou Research Base, State Key Laboratory of Cotton Biology, School of Agricultural Sciences, Zhengzhou University, Zhengzhou, China,State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China,Western Agricultural Research Center, Chinese Academy of Agricultural Sciences, Changji, China
| | - Jichao Ji
- Zhengzhou Research Base, State Key Laboratory of Cotton Biology, School of Agricultural Sciences, Zhengzhou University, Zhengzhou, China,State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China,Western Agricultural Research Center, Chinese Academy of Agricultural Sciences, Changji, China,*Correspondence: Jichao Ji,
| | - Jinjie Cui
- Zhengzhou Research Base, State Key Laboratory of Cotton Biology, School of Agricultural Sciences, Zhengzhou University, Zhengzhou, China,State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China,Western Agricultural Research Center, Chinese Academy of Agricultural Sciences, Changji, China,Jinjie Cui,
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23
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Zhao D, Ni X, Zhang Z, Niu H, Qiu R, Guo H. Bt protein hasten entomopathogenic fungi-induced death of nontarget pest whitefly by suppressing protective symbionts. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 853:158588. [PMID: 36087663 DOI: 10.1016/j.scitotenv.2022.158588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 08/29/2022] [Accepted: 09/03/2022] [Indexed: 06/15/2023]
Abstract
The risk assessment of Bacillus thuringiensis (Bt) crops on nontarget pests has received much attention. Despite the knowledge of various beneficial bacterial symbionts in pests, whether Bt proteins affect these symbionts and subsequently alter the pest's ecology remains largely unknown. The whitefly Bemisia tabaci is one of the most serious nontarget pests in Bt cotton. Here, we explored the Bt Cry1Ac protein-induced changes in whitefly symbiont abundance and the subsequent effects on whitefly response against a naturally prevalent entomopathogenic fungus Cordyceps javanica. The obligate symbiont 'Candidatus Portiera aleyrodidarum' (hereafter P. aleyrodidarum) as well as facultative symbionts 'Candidatus Hamiltonella defensa' (hereafter H. defensa), 'Candidatus Cardinium hertigii' (hereafter C. hertigii) and 'Candidatus Rickettsia bellii' (hereafter R. bellii) dominate the microbial community of whiteflies. The Bt exposure had no effects on H. defensa infected (H) and H. defensa-C. hertigii doubly infected (HC) whiteflies, but decreased the total copy number of symbionts as well as the R. bellii proportion in H. defensa-C. hertigii- R. bellii triply infected whiteflies (HCR). C. javanica caused whitefly adults 100 % mortality within 8 days. Without Bt protein exposure, HCR whiteflies survived significantly longer than H and HC whiteflies sprayed by C. javanica, suggesting that R. bellii confers protection. However, in Bt-exposed groups, C. javanica generated synchronous death of H, HC and HCR whiteflies. Specifically, in H and HC whiteflies, Bt protein-exposure showed no significant difference in progress of death caused by C. javanica. But in HCR whiteflies, Bt exposure hastened death induced by C. javanica, suppressing the R. bellii-conferred protection. This is the first report revealing that Bt protein altered symbiont community conferred adverse effects on nontarget pests, providing a new perspective for Bt risk assessment and biocontrol strategies of nontarget pests.
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Affiliation(s)
- Dongxiao Zhao
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Xiaolu Ni
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Zhichun Zhang
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Hongtao Niu
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Ruiting Qiu
- College of Arts and Sciences, The Ohio State University, Columbus 43201, United States of America
| | - Huifang Guo
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China.
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24
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Cai L, Liu X, Tian Z, Michaud JP, Shen Z, Li Z, Zhang S, Liu X. Safety of Bacillus thuringiensis Cry1Ah and Vip3Aa toxins for the predatory stink bug Arma custos (Hemiptera: Pentatomidae). THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 851:158120. [PMID: 35987246 DOI: 10.1016/j.scitotenv.2022.158120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 08/05/2022] [Accepted: 08/15/2022] [Indexed: 06/15/2023]
Abstract
The widespread adoption of Bt crops expressing insecticidal proteins derived from Bacillus thuringiensis has created a need to assess the potential effects of these toxins on non-target organisms, especially species such as Arma custos, a generalist predator that provides important biological control services in many field crops in Asia. Direct dietary exposure of A. custos to Cry1Ah and Vip3Aa proteins produced no adverse effects on life history traits, despite continuous exposure throughout development and early adult life to concentrations significantly higher than the Bt protein concentration likely encountered by A.custos in the field, even when feeding directly on Bt plants. Enzyme-linked immunosorbent assay confirmed the presence of Bt proteins in A. custos midguts, but quantitative real-time PCR analysis of 12 genes associated with detoxification, antioxidative responses, immune responses, and metabolism revealed no significant changes in expression in adult bugs. Indirect exposure to these toxins via consumption of intoxicated prey, larvae of Helicoverpa armigera (Hübner), likewise produced no negative impacts on survival, development, adult weight, or female fecundity in either the F0 (exposed) or F1 (unexposed) generation, but female fresh weight was reduced in the F0 generation by the Cry1Ah (50 μg/g) treatment. Finally, a competitive binding assay with labelled protein and a ligand blotting assay both demonstrated that the Cry1Ah protein could not bind to receptors on the midgut brush border membrane vesicles (BBMVs) of A. custos adults. Therefore, we conclude that Cry1Ah and Vip3Aa proteins are unlikely to have significant negative effects on A. custos populations if employed as plant-incorporated protectants in field crops.
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Affiliation(s)
- Limei Cai
- Department of Entomology and MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, 100193 Beijing, China
| | - Xiaoming Liu
- Department of Entomology and MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, 100193 Beijing, China
| | - Zhiqiang Tian
- Department of Entomology and MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, 100193 Beijing, China
| | - J P Michaud
- Department of Entomology, Kansas State University, Agricultural Research Station-Hays, Hays, KS 67601, USA
| | - Zhongjian Shen
- Department of Entomology and MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, 100193 Beijing, China
| | - Zhen Li
- Department of Entomology and MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, 100193 Beijing, China
| | - Songdou Zhang
- Department of Entomology and MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, 100193 Beijing, China
| | - Xiaoxia Liu
- Department of Entomology and MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, 100193 Beijing, China.
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25
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Yin H, Li W, Xu M, Xu D, Wan P. The role of tetradecane in the identification of host plants by the mirid bugs Apolygus lucorum and Adelphocoris suturalis and potential application in pest management. Front Physiol 2022; 13:1061817. [PMID: 36561212 PMCID: PMC9763589 DOI: 10.3389/fphys.2022.1061817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Accepted: 11/24/2022] [Indexed: 12/12/2022] Open
Abstract
The mirid bugs Apolygus lucorum and Adelphocoris suturalis are considered serious pests of many crops in China, the host plant recognition of these pests remains unclear. The current study investigated the vital odor cues of two mirid bugs and evaluated the role of olfactory recognition in host recognition. The GC-EAD response of mirid bugs to volatiles of their host plant Phaseolus vulgaris was tested. Tetradecane, 2-propyl-1-pentanol, and dodecanal elicited strong EAG responses by mirid bugs and were tested with field experiments. The results indicated tetradecane was significantly more attractive than other attractants, yielding 30.33 ± 2.19 mirid bugs trapped during 7 days. The selected response rates to tetradecane were above 60%, which was most attractive to female A. lucorum at 1.5 mg/ml. Among seven tetradecane derivatives, tetradecane and tetradecanoic acid were the most potent attractants to A. lucorum and A. suturalis. Tetradecane was present in the volatiles of 10 common hosts, and their difference in relative content was significant. The presence of tetradecane seemed relevant to the olfactory response intensity of two mirid bugs towards the different host plants. The artificial supplement of tetradecane increased the attractive effect of host plants. These results suggested that tetradecane plays a vital role in the olfactory selection by two mirid bugs, and it can be made into field baits as a novel ecological strategy to manage these pests with widely reported pesticide resistance. However, results suggested host recognition is not entirely dependent on odor cues. We demonstrated that A. suturalis and A. lucorum adults have similar olfactory recognition mechanisms to their hosts in long-distance host selection. While, the differences in host plant selection between the two pests should occur in close range due to differences in gustatory or tactile sensory organs of A. lucorum and A. suturalis.
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26
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Sun Y, Gong Y, He Q, Kuang S, Gao Q, Ding W, He H, Xue J, Li Y, Qiu L. FAR knockout significantly inhibits Chilo suppressalis survival and transgene expression of double-stranded FAR in rice exhibits strong pest resistance. PLANT BIOTECHNOLOGY JOURNAL 2022; 20:2272-2283. [PMID: 36028465 PMCID: PMC9674317 DOI: 10.1111/pbi.13906] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 07/04/2022] [Accepted: 07/30/2022] [Indexed: 05/05/2023]
Abstract
Chilo suppressalis is one of the most prevalent and damaging rice pests, causing significant economic losses each year. Chemical control is currently the primary method of controlling C. suppressalis. However, the indiscriminate use of chemical insecticides increases pest resistance, pollutes the environment and poses a significant health threat to humans and livestock, highlighting the need to find safer, more pest-specific and more effective alternatives to pest control. Plant-mediated RNA interference (RNAi) is a promising agricultural pest control method that is highly pest-specific and has less of an impact on the environment. Using multi-sgRNAs/Cas9 technology to delete Fatty acyl-CoA reductase (FAR) of C. suppressalis in the G0 generation, we show that downregulating FAR transcription may significantly increase the mortality rate and darken the epidermis of C. suppressalis compared with the control. Subsequently, we developed dsFAR transgenic rice lines using Agrobacterium-mediated genetic transformation and then screened three strains expressing dsFAR at high levels using transcriptional level analysis. Using transgenic rice stems, a laboratory feeding bioassay indicated that at least one line (L#10) displayed a particularly high level of insect resistance, with an insect mortality rate of more than 80%. In the field trials, dsFAR transgenic rice displayed high levels of resistance to C. suppressalis damage. Collectively, these results suggest the potential of a new environment-friendly, species-specific strategy for rice pest management.
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Affiliation(s)
- Yingjuan Sun
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, College of Plant ProtectionHunan Agricultural UniversityChangshaChina
| | - Youwei Gong
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, College of Plant ProtectionHunan Agricultural UniversityChangshaChina
| | - Qingzhen He
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, College of Plant ProtectionHunan Agricultural UniversityChangshaChina
| | - Suijie Kuang
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, College of Plant ProtectionHunan Agricultural UniversityChangshaChina
| | - Qiao Gao
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, College of Plant ProtectionHunan Agricultural UniversityChangshaChina
| | - Wenbing Ding
- National Research Center of Engineering & Technology for Utilization of Botanical Functional IngredientsHunan Agricultural UniversityChangshaChina
- Hunan Provincial Engineering & Technology Research Center for Biopesticide and Formulation ProcessingChangshaChina
| | - Hualiang He
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, College of Plant ProtectionHunan Agricultural UniversityChangshaChina
| | - Jin Xue
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, College of Plant ProtectionHunan Agricultural UniversityChangshaChina
| | - Youzhi Li
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, College of Plant ProtectionHunan Agricultural UniversityChangshaChina
- National Research Center of Engineering & Technology for Utilization of Botanical Functional IngredientsHunan Agricultural UniversityChangshaChina
| | - Lin Qiu
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, College of Plant ProtectionHunan Agricultural UniversityChangshaChina
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27
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Guan ZJ, Zhou QJ, Shi H, Tang ZX, Liu B, Wei W. Effect of Transgenic Cotton Expressing Bt Cry1Ac or Cry1Ab/Ac Toxins on Lacewing Larvae Mediated by Herbivorous Insect Pests. PLANTS (BASEL, SWITZERLAND) 2022; 11:2755. [PMID: 36297779 PMCID: PMC9607298 DOI: 10.3390/plants11202755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/10/2022] [Revised: 10/06/2022] [Accepted: 10/13/2022] [Indexed: 06/16/2023]
Abstract
A simple food chain (plant, insect pests, and predatory arthropods) in an agro-ecosystem was set up here as a model system to elucidate the potential effect of transgenic Bacillus thuringiensis (Bt) cotton on non-target organisms. The system included transgenic/non-transgenic cotton, neonate larvae of three herbivorous insects (Spodoptera exigua, Helicoverpa armigera, and S. litura), and predatory lacewing larvae (Chrysopa spp.), which represent the first, second, and third trophic levels, respectively. The results showed that transgenic treatments and different densities of prey had significant effects on both body-weight gain of neonate herbivorous larvae and the number of prey captured by lacewing larvae, respectively. It was found that Bt toxin could persist at the third trophic level in lacewing larvae. The diet mixture bioassay showed that body-weight gain of lacewing larvae was significantly affected by various treatments, especially at lower concentrations of plant-expressed Bt toxin in the diet mixture, which caused significant decreases in body-weight gain. In contrast, synthetic Bt toxin at higher concentrations in the diet did not show this effect. Thus, we inferred that Bt toxin indirectly affected the growth of the lacewings and the lacewings may not be susceptible to Bt toxin or are able to metabolize it.
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Affiliation(s)
- Zheng-Jun Guan
- State Key Laboratory of Vegetation and Climate Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
- Department of Life Sciences, Yuncheng University, Yuncheng 044000, China
| | - Qiu-Ju Zhou
- Institutes of Science and Development, Chinese Academy of Sciences, Beijing 100190, China
| | - Hong Shi
- State Key Laboratory of Vegetation and Climate Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
| | - Zhi-Xi Tang
- State Key Laboratory of Vegetation and Climate Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
| | - Biao Liu
- Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment of P. R. China, Nanjing 210042, China
| | - Wei Wei
- State Key Laboratory of Vegetation and Climate Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
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28
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Liu H, Sun X, Shi Z, An X, Khashaveh A, Li Y, Gu S, Zhang Y. Identification and functional analysis of odorant-binding proteins provide new control strategies for Apolygus lucorum. Int J Biol Macromol 2022; 224:1129-1141. [DOI: 10.1016/j.ijbiomac.2022.10.197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 10/20/2022] [Accepted: 10/21/2022] [Indexed: 11/05/2022]
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29
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Yang Y, Chen Y, Xue J, Wang Y, Song X, Li Y. Impact of Transgenic Cry1Ab/2Aj Maize on Abundance of Non-Target Arthropods in the Field. PLANTS (BASEL, SWITZERLAND) 2022; 11:2520. [PMID: 36235387 PMCID: PMC9572736 DOI: 10.3390/plants11192520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 09/19/2022] [Accepted: 09/22/2022] [Indexed: 06/16/2023]
Abstract
Transgenic Bacillus thuringiensis (Bt) maize has broad prospects for application in China. Before commercialization, it is necessary to assess possible ecological impacts, including impacts on non-target arthropods (NTAs) in the field. In the present study, transgenic Bt maize expressing cry1Ab/2Aj and its corresponding non-transformed near isoline were planted under the same environmental and agricultural conditions, and arthropods in the field were collected during the three main growth stages of maize. In a one year trial, the results showed the composition of NTA communities in the transgenic and control maize fields were similar. There were no significant differences for community-level parameters of species richness (S), Shannon-Wiener diversity index (H'), evenness index (J) and Simpson's dominant concentration (C) between the two types of maize fields. Likewise, a Bray-Curtis dissimilarity and distance analysis showed that Cry1Ab/2Aj toxin exposure did not increase community dissimilarities between Bt and non-Bt maize plots and that the structure of the NTAs community was similar on the two maize varieties. Furthermore, planting of the transgenic cry1Ab/2Aj maize did not affect the density or composition of non-target decomposers, herbivores, predators, parasitoids and pollinator guilds. In summary, our results showed that planting of Bt maize producing Cry1Ab/Cry2Aj proteins do not adversely affect population dynamics and diversity of NTAs.
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Affiliation(s)
- Yan Yang
- Key Laboratory of Genetics and Germplasm Innovation of Tropical Special Forest Trees and Ornamental Plants, Ministry of Education, College of Forestry, Hainan University, Haikou 570228, China
- State Key Laboratory for Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Yi Chen
- Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou 571025, China
- Sanya Research Institute of the Chinese Academy of Tropical Agricultural Sciences, Sanya 572022, China
- Hainan Yazhou Bay Seed Laboratory, Sanya 572025, China
| | - Jiabao Xue
- Key Laboratory of Genetics and Germplasm Innovation of Tropical Special Forest Trees and Ornamental Plants, Ministry of Education, College of Forestry, Hainan University, Haikou 570228, China
- Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou 571025, China
- Sanya Research Institute of the Chinese Academy of Tropical Agricultural Sciences, Sanya 572022, China
| | - Yuanyuan Wang
- State Key Laboratory for Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Xinyuan Song
- Agro-Biotechnology Research Institute, Jilin Academy of Agricultural Sciences, Changchun 130033, China
| | - Yunhe Li
- State Key Laboratory for Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
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Khashaveh A, An X, Shan S, Pang X, Li Y, Fu X, Zhang Y. The microRNAs in the antennae of Apolygus lucorum (Hemiptera: Miridae): Expression properties and targets prediction. Genomics 2022; 114:110447. [PMID: 35963492 DOI: 10.1016/j.ygeno.2022.110447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 07/25/2022] [Accepted: 08/07/2022] [Indexed: 11/04/2022]
Abstract
MicroRNAs (miRNAs) regulate gene expression and contribute to numerous physiological processes. However, little is known about the functions of miRNAs in insect chemosensation. In this study, nine small RNA libraries were constructed and sequenced from the antennae of nymphs, adult males, and adult females of Apolygus lucorum. In total, 399 (275 known and 124 novel) miRNAs were identified. miR-7-5p_1 was the most abundant miRNA. Altogether, 69,708 target genes related to biogenesis, membrane, and binding activities were predicted. In particular, 15 miRNAs targeted 16 olfactory genes. Comparing the antennae of nymphs and adult males and females, 94 miRNAs were differentially expressed. Alternatively, a subset of differentially expressed miRNAs was verified by qPCR, supporting the reliability of the sequencing results. This study provides a global miRNA transcriptome for the antennae of A. lucorum and valuable information for further investigations of the functions of miRNAs in the regulation of chemosensation.
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Affiliation(s)
- Adel Khashaveh
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Xingkui An
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Shuang Shan
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Xiaoqian Pang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China; School of Resource and Environment, Henan Institute of Science and Technology, Xinxiang 453003, China
| | - Yan Li
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China; Anhui Provincial Key Laboratory of Molecular Enzymology and Mechanism of Major Diseases, College of Life Sciences, Anhui Normal University, Wuhu, Anhui 241000, China
| | - Xiaowei Fu
- School of Resource and Environment, Henan Institute of Science and Technology, Xinxiang 453003, China
| | - Yongjun Zhang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
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Yang S, Cao Q, Peng K, Xie J. Jasmonic Acid-Treated Cotton Plant Leaves Impair Larvae Growth Performance, Activities of Detoxification Enzymes, and Insect Humoral Immunity of Cotton Bollworm. NEOTROPICAL ENTOMOLOGY 2022; 51:570-582. [PMID: 35680779 DOI: 10.1007/s13744-022-00970-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Accepted: 05/10/2022] [Indexed: 06/15/2023]
Abstract
Enhancement of plant defense by exogenous elicitors is a promising tool for integrated pest management strategy. In the present study, cotton plants were treated with different concentrations (0, 0.01, 0.1, and 1.0 mM) of the natural plant defense elicitor, jasmonic acid (JA), and defense-related indicators in the plants were then determined. The cotton bollworm larvae were fed with JA-treated cotton leaves and larvae performances were discussed in terms of larvae relative growth rate (RGR), larval duration, pupal mass, humoral immunity, and activities of a target enzyme, three detoxification enzymes and two metabolic enzymes. Research results showed that JA treatment increased the contents of gossypol and H2O2, and decreased that of the total soluble carbohydrates, and 0.1 mM JA was more powerful in the induction of defense-related parameters. As a consequence, cotton bollworm larvae reared on JA-treated cotton leaves showed slower RGR, prolonged larvae duration, and decreased pupal mass. In addition, when larvae were fed with JA-treated cotton leaves, activities of phenoloxidae (an indicator of humoral immunity) and acetylcholinesterase (AchE, a target enzyme), alkaline phosphatases (ALP), acidic phosphatase (ACP), and three detoxification enzymes, carboxylesterase (CarE), glutathione S-transferase (GST), and cytochrome P450 (P450), were all reduced compared to the control. Taken together, the results suggest that JA can be an alternative agent for pest management by delaying insect growth and inhibiting immune defense and detoxification capacity of the cotton bollworm, which may reduce the use of synthetic pesticides.
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Affiliation(s)
- Shiyong Yang
- School of Ecology and Environment, Anhui Normal Univ, Wuhu, People's Republic of China.
- Collaborative Innovation Center for Recovery and Reconstruction of Degraded Ecosystem in Wanjing Basin Co-Founded by Anhui Province and Ministry of Education, Wuhu, People's Republic of China.
| | - Qian Cao
- School of Ecology and Environment, Anhui Normal Univ, Wuhu, People's Republic of China
| | - Kaihao Peng
- School of Ecology and Environment, Anhui Normal Univ, Wuhu, People's Republic of China
| | - Jianchun Xie
- School of Ecology and Environment, Anhui Normal Univ, Wuhu, People's Republic of China
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32
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Dong Y, Wu M, Zhang Q, Fu J, Loiacono FV, Yang Y, Wang Z, Li S, Chang L, Bock R, Zhang J. Control of a sap-sucking insect pest by plastid-mediated RNA interference. MOLECULAR PLANT 2022; 15:1176-1191. [PMID: 35619559 DOI: 10.1016/j.molp.2022.05.008] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 04/22/2022] [Accepted: 05/20/2022] [Indexed: 06/15/2023]
Abstract
Expression of double-stranded RNAs in plastids offers great potential for the efficient control of chewing insects. However, many insect pests do not consume plant tissue but rather feed on the host plant by sucking sap from the vascular system. Whether or not plastid-mediated RNA interference (RNAi) can be employed to control sap-sucking insects is unknown. Here, we show that five species of sap-sucking hemipteran insects acquire plastid RNA upon feeding on plants. We generated both nuclear transgenic and transplastomic tobacco plants expressing double-stranded RNAs targeting the MpDhc64C gene, a newly identified efficient target gene of RNAi whose silencing causes lethality to the green peach aphid Myzus persicae. In a whole-plant bioassay, transplastomic plants exhibited significant resistance to aphids, as evidenced by reduced insect survival, impaired fecundity, and decreased weight of survivors. The protective effect was comparable with that conferred by the best-performing nuclear transgenic plants. We found that the proportion of aphids on mature leaves of transplastomic plants was significantly lower compared with that of nuclear transgenic plants. When aphids were allowed to infest only the mature leaves, transplastomic plants grew significantly faster and were overall better protected from the pest compared with nuclear transgenic plants. When monitored by electrical-penetration-graph analyses and aphid avoidance response experiments, the insects displayed remarkable alterations in feeding behavior, which was different in nuclear transgenic and transplastomic plants, likely reflecting specific avoidance strategies to toxic RNA molecules. Taken together, our study demonstrates that plastid-mediated RNAi provides an efficient strategy for controlling at least some sap-sucking insect pests, even though there is most likely no or only very little chloroplast RNA in the sap.
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Affiliation(s)
- Yi Dong
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Hongshan Laboratory, School of Life Sciences, Hubei University, Wuhan 430062, China
| | - Mengting Wu
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Hongshan Laboratory, School of Life Sciences, Hubei University, Wuhan 430062, China
| | - Qi Zhang
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Hongshan Laboratory, School of Life Sciences, Hubei University, Wuhan 430062, China
| | - Jinqiu Fu
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Hongshan Laboratory, School of Life Sciences, Hubei University, Wuhan 430062, China
| | - F Vanessa Loiacono
- Max-Planck-Institut für Molekulare Pflanzenphysiologie, Am Mühlenberg 1, D-14476 Potsdam-Golm, Germany
| | - Yong Yang
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Hongshan Laboratory, School of Life Sciences, Hubei University, Wuhan 430062, China
| | - Zican Wang
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Hongshan Laboratory, School of Life Sciences, Hubei University, Wuhan 430062, China
| | - Shengchun Li
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Hongshan Laboratory, School of Life Sciences, Hubei University, Wuhan 430062, China
| | - Ling Chang
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Hongshan Laboratory, School of Life Sciences, Hubei University, Wuhan 430062, China
| | - Ralph Bock
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Hongshan Laboratory, School of Life Sciences, Hubei University, Wuhan 430062, China; Max-Planck-Institut für Molekulare Pflanzenphysiologie, Am Mühlenberg 1, D-14476 Potsdam-Golm, Germany
| | - Jiang Zhang
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Hongshan Laboratory, School of Life Sciences, Hubei University, Wuhan 430062, China.
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Expression of Modified Snowdrop Lectin ( Galanthus nivalis Agglutinin) Protein Confers Aphids and Plutella xylostella Resistance in Arabidopsis and Cotton. Genes (Basel) 2022; 13:genes13071169. [PMID: 35885952 PMCID: PMC9316576 DOI: 10.3390/genes13071169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 06/26/2022] [Accepted: 06/27/2022] [Indexed: 01/27/2023] Open
Abstract
Cotton is a major fiber crop in the world that can be severely infested by pests in agricultural fields. Identifying new insect-resistance genes and increasing the expression of known insect-resistance genes are imperative in cultivated cotton. Galanthus nivalis agglutinin (GNA), a lectin that is toxic to both chewing and sucking pests, is mainly expressed in monocotyledons. It is necessary to improve the expression of the GNA protein and to test whether the lectin confers insect resistance to dicotyledons plants. We report a modified GNA gene (ASGNA) via codon optimization, its insertion into Arabidopsis thaliana, and transient expression in cotton to test its efficacy as an insect-resistance gene against cotton aphids and Plutella xylostella. The amount of ASGNA in transgenic plants reached approximately 6.5 μg/g of fresh weight. A feeding bioassay showed that the survival rate of aphids feeding on the leaves of ASGNA transgenic plants was lower than those of aphids feeding on the leaves of non-optimized GNA (NOGNA) transgenic plants and wild-type plants. Meanwhile, the fertility rate was 36% when fed on the ASGNA transgenic plants, while the fertility was 70% and 95% in NOGNA transgenic plants and wild-type plants. Correspondingly, the highest mortality of 55% was found in ASGNA transgenic lines, while only 35% and 20% mortality was observed in NOGNA transgenic plants and wild-type plants, respectively. Similar results were recorded for aphids feeding on cotton cotyledons with transient expression of ASGNA. Taken together, the results show that ASGNA exhibited high insecticidal activity towards sap-sucking insects and thus is a promising candidate gene for improving insect resistance in cotton and other dicotyledonous plants.
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Silencing of multiple target genes via ingestion of dsRNA and PMRi affects development and survival in Helicoverpa armigera. Sci Rep 2022; 12:10405. [PMID: 35729318 PMCID: PMC9213516 DOI: 10.1038/s41598-022-14667-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Accepted: 06/10/2022] [Indexed: 11/15/2022] Open
Abstract
RNA interference (RNAi) triggered by exogenous double-stranded RNA (dsRNA) is a powerful tool to knockdown genetic targets crucial for the growth and development of agriculturally important insect pests. Helicoverpa armigera is a pest feeding on more than 30 economically important crops worldwide and a major threat. Resistance to insecticides and Bt toxins has been gradually increasing in the field. RNAi-mediated knockdown of H. armigera genes by producing dsRNAs homologous to genetic targets in bacteria and plants has a high potential for insect management to decrease agricultural loss. The acetylcholinesterase (AChE), ecdysone receptor (EcR) and v-ATPase-A (vAA) genes were selected as genetic targets. Fragments comprising a coding sequence of < 500 bp were cloned into the L4440 vector for dsRNA production in bacteria and in a TRV-VIGS vector in antisense orientation for transient expression of dsRNA in Solanum tuberosum leaves. After ingesting bacterial-expressed dsRNA, the mRNA levels of the target genes were significantly reduced, leading to mortality and abnormal development in larva of H. armigera. Furthermore, the S. tuberosum plants transformed with TRV-VIGS expressing AChE exhibited higher mortality > 68% than the control plants 17%, recorded ten days post-feeding and significant resistance in transgenic (transient) plants was observed. Moreover, larval lethality and molting defects were observed in larva fed on potato plants expressing dsRNA specific to EcR. Analysis of transcript levels by quantitative RT–PCR revealed that larval mortality was attributable to the knockdown of genetic targets by RNAi. The results demonstrated that down-regulation of H. armigera genes involved in ATP hydrolysis, transcriptional stimulation of development genes and neural conduction has aptitude as a bioinsecticide to control H. armigera population sizes and therefore decreases crop loss.
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Zhang S, Wang X, Wang G, Liu F, Liu Y. An odorant receptor of the green mirid bug, Apolygus lucorum, tuned to linalool. INSECT BIOCHEMISTRY AND MOLECULAR BIOLOGY 2022; 144:103764. [PMID: 35367588 DOI: 10.1016/j.ibmb.2022.103764] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 03/21/2022] [Accepted: 03/29/2022] [Indexed: 06/14/2023]
Abstract
A highly sensitive olfactory system is required for various insect behaviors, including oviposition site selection, host location, and mate recognition. Odorant receptors (ORs) play a critical role in odorant detection. In this study, we cloned four OR genes referred to as AlucORs (AlucOR4, AlucOR39, AlucOR43, and AlucOR47) from the green mirid bug, Apolygus lucorum, and used Real-time quantitative PCR to show that expression of all four ORs was considerably biased to antennae. Functional analysis, performed using a Xenopus oocyte expression system, revealed that AlucOR47 was robustly and sensitively tuned to the important plant volatile, linalool, and its analogs, linalyl acetate and linalool tetrahydride. Electroantennogram recordings showed that all three ligands elicited obvious responses in male and female mirid bug antennae, with the response to linalool being the strongest. In behavioral assays, male and female mirid bugs displayed significant aversions to linalool. Additionally, the repellent behavior effect of A. lucorum in response to linalool disappeared after knocking down AlucOR47 by RNA interference (RNAi). Taken together, these results indicate that AlucOR47 is necessary for linalool perception in A. lucorum. Our results suggest that AlucOR47 may play a role in plant-insect interactions and provide insight into potential means of biological control against mirid bugs.
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Affiliation(s)
- Sai Zhang
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, 225009, China; State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Xiaoqing Wang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Guirong Wang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China; Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, China
| | - Fang Liu
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, 225009, China.
| | - Yang Liu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China.
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Chen H, Su H, Zhang S, Jing T, Liu Z, Yang Y. Transcriptomic and Metabolomic Responses in Cotton Plant to Apolygus lucorum Infestation. INSECTS 2022; 13:391. [PMID: 35447833 PMCID: PMC9025427 DOI: 10.3390/insects13040391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 03/29/2022] [Accepted: 04/12/2022] [Indexed: 01/27/2023]
Abstract
With the wide-scale adoption of transgenic Bacillus thuringiensis (Bt) cotton, Apolygus lucorum (Meyer-Dür) has become the most serious pest and has caused extensive yield loss in cotton production. However, little is known about the defense responses of cotton at the seedling stage to A. lucorum feeding. In this study, to elucidate the cotton defense mechanism, cotton leaves were damaged by A. lucorum for 0, 4, 12 and 24 h. The transcriptomic results showed that A. lucorum feeding elicits a rapid and strong defense response in gene expression during the whole infestation process in cotton plants. Further analysis revealed that at each assessment time, more differentially expressed genes were up-regulated than down-regulated. The integrated analysis of transcriptomic and metabolic data showed that most of the genes involved in jasmonic acid (JA) biosynthesis were initially up-regulated, and this trend continued during an infestation. Meanwhile, the content levels of JA and its intermediate products were also significantly increased throughout the whole infestation process. The similar trend was displayed in condensed tannins biosynthesis. This research proved that, after plants are damaged by A. lucorum, the JA pathway mediates the defense mechanisms in cotton plants by promoting the accumulation of condensed tannins as a defense mechanism against A. lucorum. These results will help us to discover unknown defensive genes and improve the integrated pest management of A. lucorum.
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Affiliation(s)
| | | | | | | | | | - Yizhong Yang
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou 225007, China; (H.C.); (H.S.); (S.Z.); (T.J.); (Z.L.)
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37
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Feng H, Gou C, Aimaiti D, Sun P, Wang L, Hao H. Plant volatile organic compounds attractive to Lygus pratensis. Open Life Sci 2022; 17:362-371. [PMID: 35586846 PMCID: PMC9002162 DOI: 10.1515/biol-2022-0038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 11/26/2021] [Accepted: 01/03/2022] [Indexed: 11/28/2022] Open
Abstract
Lygus pratensis, an important agricultural pest, is seriously detrimental to cotton in China. For the research and development of attractants, the present study screened and identified plant volatiles with activity against the pest. Out of the total 20 volatiles identified from seven hosts, 16 volatiles were selected and evaluated. Electrophysiological test results revealed the highest electroantennogram values of heptacosane, heptadecane, decanal, (E)-4-hexen-1-ol, dodecane, β-pinene, and cis-3-hexenyl isovalerate on adult insects. A significant difference in the behavior of female adults (P < 0.01) was noted in the trend behavioral tests when the concentration of heptacosane, nonadecane, heptadecane, decanal, 3-hexen-1-ol, and dodecane was 10−3 (V/V), and that of β-pinene was 10−4 (V/V). The field trapping test confirmed a significant difference in the trapping effect of heptadecane at 10−2 (V/V) and 10−3 (V/V), decanal at 10−1 (V/V) and 10−3 (V/V), β-pinene at 10−2 (V/V), and dodecane at 10−4 (V/V) compared to that of other volatiles (P < 0.05). These findings suggested the strong attractant effect of heptadecane, dodecane, decanal, and β-pinene on adults, indicating their potential application as effective attractants for the ecological control of L. pratensis.
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Affiliation(s)
- Hongzu Feng
- Key Laboratory of Integrated Pest Management (IPM) of Xinjiang Production and Construction Corps in Southern Xinjiang, The National and Local Joint Engineering Laboratory of High Efficiency and Superior – Quality Cultivation and Fruit Deep Processing Technology of Characteristic Fruit Trees in Southern Xinjiang, Scientific Observing and Experimental Station of Crop Pests in Alar, Tarim University , Alar , Xinjiang Province 843300 , China
| | - Changqing Gou
- Key Laboratory of Integrated Pest Management (IPM) of Xinjiang Production and Construction Corps in Southern Xinjiang, The National and Local Joint Engineering Laboratory of High Efficiency and Superior – Quality Cultivation and Fruit Deep Processing Technology of Characteristic Fruit Trees in Southern Xinjiang, Scientific Observing and Experimental Station of Crop Pests in Alar, Tarim University , Alar , Xinjiang Province 843300 , China
| | - Dilinuer Aimaiti
- Natural Resources Bureau of Qitai County , Changji 831800 , China
| | - Peng Sun
- China Cotton Group , Beijing, 100000 , China
| | - Lan Wang
- Key Laboratory of Integrated Pest Management (IPM) of Xinjiang Production and Construction Corps in Southern Xinjiang, The National and Local Joint Engineering Laboratory of High Efficiency and Superior – Quality Cultivation and Fruit Deep Processing Technology of Characteristic Fruit Trees in Southern Xinjiang, Scientific Observing and Experimental Station of Crop Pests in Alar, Tarim University , Alar , Xinjiang Province 843300 , China
| | - Haiting Hao
- Key Laboratory of Integrated Pest Management (IPM) of Xinjiang Production and Construction Corps in Southern Xinjiang, The National and Local Joint Engineering Laboratory of High Efficiency and Superior – Quality Cultivation and Fruit Deep Processing Technology of Characteristic Fruit Trees in Southern Xinjiang, Scientific Observing and Experimental Station of Crop Pests in Alar, Tarim University , Alar , Xinjiang Province 843300 , China
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Ye F, Kment P, Rédei D, Luo JY, Wang YH, Kuechler SM, Zhang WW, Chen PP, Wu HY, Wu YZ, Sun XY, Ding L, Wang YR, Xie Q. Diversification of the phytophagous lineages of true bugs (Insecta: Hemiptera: Heteroptera) shortly after that of the flowering plants. Cladistics 2022; 38:403-428. [PMID: 35349192 DOI: 10.1111/cla.12501] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 02/20/2022] [Accepted: 02/22/2022] [Indexed: 12/20/2022] Open
Abstract
More than 95% of phytophagous true bug (Hemiptera: Heteroptera) species belong to four superfamilies: Miroidea (Cimicomorpha), Pentatomoidea, Coreoidea, and Lygaeoidea (all Pentatomomorpha). These iconic groups of highly diverse, overwhelmingly phytophagous insects include several economically prominent agricultural and silvicultural pest species, though their evolutionary history has not yet been well resolved. In particular, superfamily- and family-level phylogenetic relationships of these four lineages have remained controversial, and the divergence times of some crucial nodes for phytophagous true bugs have hitherto been little known, which hampers a better understanding of the evolutionary processes and patterns of phytophagous insects. In the present study, we used 150 species and concatenated nuclear and mitochondrial protein-coding genes and rRNA genes to infer the phylogenetic relationships within the Terheteroptera (Cimicomorpha + Pentatomomorpha) and estimated their divergence times. Our results support the monophyly of Cimicomorpha, Pentatomomorpha, Miroidea, Pentatomoidea, Pyrrhocoroidea, Coreoidea, and Lygaeoidea. The phylogenetic relationships across phytophagous lineages are largely congruent at deep nodes across the analyses based on different datasets and tree-reconstructing methods with just a few exceptions. Estimated divergence times and ancestral state reconstructions for feeding habit indicate that phytophagous true bugs explosively radiated in the Early Cretaceous-shortly after the angiosperm radiation-with the subsequent diversification of the most speciose clades (Mirinae, Pentatomidae, Coreinae, and Rhyparochromidae) in the Late Cretaceous.
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Affiliation(s)
- Fei Ye
- State Key Laboratory of Biocontrol, Sun Yat-sen University, Guangzhou, China.,Department of Ecology and Evolution, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Petr Kment
- Department of Entomology, National Museum, Praha, Czech Republic
| | | | - Jiu-Yang Luo
- State Key Laboratory of Biocontrol, Sun Yat-sen University, Guangzhou, China.,Department of Ecology and Evolution, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Yan-Hui Wang
- State Key Laboratory of Biocontrol, Sun Yat-sen University, Guangzhou, China.,Department of Ecology and Evolution, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Stefan M Kuechler
- Department of Animal Ecology II, University of Bayreuth, Bayreuth, Germany
| | | | - Ping-Ping Chen
- Netherlands Centre of Biodiversity Naturalis, Leiden, Netherlands
| | - Hao-Yang Wu
- State Key Laboratory of Biocontrol, Sun Yat-sen University, Guangzhou, China.,Department of Ecology and Evolution, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | | | - Xiao-Ya Sun
- Tianjin Key Laboratory of Animal and Plant Resistance, Tianjin Normal University, Tianjin, China
| | - Lu Ding
- State Key Laboratory of Biocontrol, Sun Yat-sen University, Guangzhou, China.,Department of Ecology and Evolution, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Yue-Ran Wang
- State Key Laboratory of Biocontrol, Sun Yat-sen University, Guangzhou, China.,Department of Ecology and Evolution, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Qiang Xie
- State Key Laboratory of Biocontrol, Sun Yat-sen University, Guangzhou, China.,Department of Ecology and Evolution, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
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39
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Tan YA, Zhao XD, Zhao J, Zhu-Salzman K, Ji QQ, Xiao LB, Hao DJ. iTRAQ Proteomic Analysis of Interactions Between 20E and Phospholipase C in Apolygus lucorum (Meyer-Dür). Front Physiol 2022; 13:845087. [PMID: 35250643 PMCID: PMC8894726 DOI: 10.3389/fphys.2022.845087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Accepted: 01/31/2022] [Indexed: 11/13/2022] Open
Abstract
Polyphagous Apolygus lucorum has become the dominant insect in Bacillus thuringiensis (Bt) cotton fields. Hormone 20-hydroxyecdysone (20E) regulates multiple insect development and physiology events. 20E responses are controlled by pathways triggered by phospholipase C (PLC)-associated proteins. However, 20E-modulated genes and related proteins that can be affected by PLC still remain unknown. Here, isobaric tag for relative and absolute quantitation (iTRAQ) and immunoblotting techniques were used to compare differentially expressed proteins (DEPs) in A. lucorum in response to the treatment of 20E and the PLC inhibitor U73122 as well as their combination. A total of 1,624 non-redundant proteins and 97, 248, 266 DEPs were identified in the 20E/control, U73122/control, and 20E + U73122/control groups, respectively. Only 8 DEPs, including pathogenesis-related protein 5-like, cuticle protein 19.8, trans-sialidase, larval cuticle protein A2B-like, cathepsin L1, hemolymph juvenile hormone-binding protein, ATP-dependent RNA helicase p62-like, and myosin-9 isoform X1, were detected in all three groups. Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis showed that the DEPs were involved in diverse signaling pathways. The results were validated by immunoblotting, which highlighted the reliability of proteomics analysis. These findings provided novel insights into the function of PLC in 20E signaling pathway in A. lucorum.
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Affiliation(s)
- Yong-An Tan
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Xu-Dong Zhao
- College of Forestry, Nanjing Forestry University, Nanjing, China
| | - Jing Zhao
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Keyan Zhu-Salzman
- Department of Entomology, College of Agriculture and Life Sciences, Texas A&M University, College Station, TX, United States
| | - Qin-Qin Ji
- Taizhou Customs of the People’s Republic of China, Taizhou, China
| | - Liu-Bin Xiao
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, China
- *Correspondence: Liu-Bin Xiao,
| | - De-Jun Hao
- College of Forestry, Nanjing Forestry University, Nanjing, China
- De-Jun Hao,
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Lu Y, Wyckhuys KAG, Yang L, Liu B, Zeng J, Jiang Y, Desneux N, Zhang W, Wu K. Bt cotton area contraction drives regional pest resurgence, crop loss, and pesticide use. PLANT BIOTECHNOLOGY JOURNAL 2022; 20:390-398. [PMID: 34626524 PMCID: PMC8753353 DOI: 10.1111/pbi.13721] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 10/04/2021] [Accepted: 10/05/2021] [Indexed: 05/21/2023]
Abstract
Genetically-modified crops expressing Bacillus thuringiensis (Bt) proteins have been widely cultivated, permitting an effective non-chemical control of major agricultural pests. While their establishment can enable an area-wide suppression of polyphagous herbivores, no information is available on the impact of Bt crop abandonment in entire landscape matrices. Here, we detail a resurgence of the cosmopolitan bollworm Helicoverpa armigera following a contraction of Bt cotton area in dynamic agro-landscapes over 2007-2019 in North China Plain. An 80% reduction in Bt cotton was mirrored in a 1.9-fold increase of ambient H. armigera population levels, culminating in 1.5-2.1-fold higher yield loss and a 2.0-4.4-fold increase in pesticide use frequency in non-Bt crops (i.e. maize, peanut, soybean). Our work unveils the fate of herbivorous insect populations following a progressive dis-use of insecticidal crop cultivars, and hints at how tactically deployed Bt crops could be paired with agro-ecological measures to mitigate the environmental footprint of crop production.
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Affiliation(s)
- Yanhui Lu
- State Key Laboratory for Biology of Plant Diseases and Insect PestsInstitute of Plant ProtectionChinese Academy of Agricultural SciencesBeijingChina
| | - Kris A. G. Wyckhuys
- State Key Laboratory for Biology of Plant Diseases and Insect PestsInstitute of Plant ProtectionChinese Academy of Agricultural SciencesBeijingChina
| | - Long Yang
- State Key Laboratory for Biology of Plant Diseases and Insect PestsInstitute of Plant ProtectionChinese Academy of Agricultural SciencesBeijingChina
| | - Bing Liu
- State Key Laboratory for Biology of Plant Diseases and Insect PestsInstitute of Plant ProtectionChinese Academy of Agricultural SciencesBeijingChina
| | - Juan Zeng
- National Agro‐Technical Extension and Service CenterBeijingChina
| | - Yuying Jiang
- National Agro‐Technical Extension and Service CenterBeijingChina
| | | | - Wei Zhang
- Environment and Production Technology DivisionInternational Food Policy Research InstituteWashingtonDCUSA
| | - Kongming Wu
- State Key Laboratory for Biology of Plant Diseases and Insect PestsInstitute of Plant ProtectionChinese Academy of Agricultural SciencesBeijingChina
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Yang F, Liu B, Zhu Y, Desneux N, Liu L, Li C, Wyckhuys KA, Lu Y. Transgenic Cry1Ac + CpTI cotton does not compromise parasitoid-mediated biological control: An eight-year case study. PEST MANAGEMENT SCIENCE 2022; 78:240-245. [PMID: 34476893 DOI: 10.1002/ps.6627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Revised: 08/21/2021] [Accepted: 09/03/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND The on-farm deployment of genetically modified crops may negatively affect nontarget arthropods, potentially disrupting food web structure and ecosystem functions. Aphid-parasitoid interactions are well-suited to study these potential impacts in agro-ecosystems. Over the span of 8 years, we systematically compared infestation levels of the aphid Aphis gossypii, its associated parasitoid community and overall parasitism rate between transgenic Cry1Ac + CpTI cotton and nontransgenic cotton. Furthermore, we measured the impact of transgenic Cry1Ac + CpTI cotton on structural traits and interspecies interactions within quantitative aphid-parasitoid food webs. RESULTS Transgenic Cry1Ac + CpTI cotton did not affect the abundance of aphids and parasitoids, or in-field parasitism rates. Despite weak interannual variability, transgenic Cry1Ac + CpTI cotton also did not alter food web architecture or biological control services. CONCLUSIONS Our work not only elucidates the impact of transgenic Cry1Ac + CpTI cotton on different nontarget arthropods (i.e. aphids, parasitoids, hyperparasitoids) and their associated ecosystem services or disservices, but also diversifies the ecological risk assessment toolbox for transgenic insecticidal crops. © 2021 Society of Chemical Industry.
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Affiliation(s)
- Fan Yang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Bing Liu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Yulin Zhu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | | | - Lituo Liu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Caihong Li
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Kris Ag Wyckhuys
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Yanhui Lu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
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Rodríguez-González Á, Porteous-Álvarez AJ, Guerra M, González-López Ó, Casquero PA, Escriche B. Effect of Cry Toxins on Xylotrechus arvicola (Coleoptera: Cerambycidae) Larvae. INSECTS 2021; 13:insects13010027. [PMID: 35055870 PMCID: PMC8778931 DOI: 10.3390/insects13010027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 12/20/2021] [Accepted: 12/24/2021] [Indexed: 11/16/2022]
Abstract
Simple Summary Xylotrechus arvicola is a destructive pest in vineyards (Vitis vinifera) in the main wine-producing areas of the Iberian Peninsula. X. arvicola larvae bore into the grapevine wood-making galleries, thus damaging the plant both directly and indirectly. The susceptibility of X. arvicola larvae to five coleopteran toxic Cry proteins was evaluated under laboratory conditions in order to deepen the knowledge of the effect of these proteins on this insect throughout its biological development. The Cry proteins tested could be applied to control X. arvicola larvae since they were able to kill them and cause serious alterations in the larvae during the remaining months of development that followed. The data presented suggest that these Cry proteins can be used as bioinsecticides against the larvae of this insect, in order to avoid the rapid evolution of resistance against these toxins since not all of the larvae were killed and thus increase vine wood protection. Abstract The beetle Xylotrechus arvicola is a destructive pest in vineyards (Vitis vinifera) in the main wine-producing areas of the Iberian Peninsula. X. arvicola larvae bore into the grapevine wood-making galleries, thus damaging the plant both directly and indirectly; the latter through the proliferation of wood fungi, which can invade the inside of the plant, decreasing the quality and quantity of its production. The susceptibility of X. arvicola larvae to five coleopteran toxic Cry proteins (Cry1B, Cry1I, Cry3A, Cry7A, and Cry23/37) was evaluated under laboratory conditions in order to deepen the knowledge of the effect of these proteins on this insect throughout its biological development. Cry7Ab and Cry1Ba were the most effective in controlling X. arvicola larvae due to the significant reduction in larvae survival (32.9 and 25.9 days, respectively), and by causing serious alterations in the larvae during the remaining months of their development. The developmental stage of the prepupal and pupal stages was not affected by the previous ingestion of Cry proteins. The Cry proteins tested could be applied to control X. arvicola larvae since they were able to kill them and cause serious alterations in the larvae during the remaining months of development that followed. The data presented suggest that these Cry proteins can be used as bioinsecticides against the larvae of this insect, applying them only at the moment when the larvae hatch from the egg outside the grapevine wood (this would only be useful and justified if the economic threshold is exceeded) in order to avoid the rapid evolution of resistance against these toxins since not all of the larvae were killed and thus increase vine wood protection.
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Affiliation(s)
- Álvaro Rodríguez-González
- Grupo Universitario de Investigación en Ingeniería y Agricultura Sostenible (GUIIAS), Instituto de Medio Ambiente Recursos Naturales y Biodiversidad (INMARENBIO), Escuela de Ingeniería Agraria y Forestal (EIAF), Universidad de León, 24071 Leon, Spain; (A.J.P.-Á.); (P.A.C.)
- Correspondence: (Á.R.-G.); (B.E.)
| | - Alejandra J. Porteous-Álvarez
- Grupo Universitario de Investigación en Ingeniería y Agricultura Sostenible (GUIIAS), Instituto de Medio Ambiente Recursos Naturales y Biodiversidad (INMARENBIO), Escuela de Ingeniería Agraria y Forestal (EIAF), Universidad de León, 24071 Leon, Spain; (A.J.P.-Á.); (P.A.C.)
| | - Marcos Guerra
- Grupo Universitario de Investigación en Ingeniería y Agricultura Sostenible (GUIIAS), Escuela de Ingeniería Agraria y Forestal (EIAF), Campus de Ponferrada, Universidad de León, 24401 Ponferrada, Spain;
| | - Óscar González-López
- Departamento de Agricultura y Alimentación, Complejo Científico Tecnológico, Universidad de La Rioja, Área de Producción Vegetal, 26006 Logrono, Spain;
| | - Pedro A. Casquero
- Grupo Universitario de Investigación en Ingeniería y Agricultura Sostenible (GUIIAS), Instituto de Medio Ambiente Recursos Naturales y Biodiversidad (INMARENBIO), Escuela de Ingeniería Agraria y Forestal (EIAF), Universidad de León, 24071 Leon, Spain; (A.J.P.-Á.); (P.A.C.)
| | - Baltasar Escriche
- Instituto Universitario de Biotecnología y Biomedicina (BIOTECMED), Departamento de Genética, Universitat de Valencia, 46100 Burjassot, Spain
- Correspondence: (Á.R.-G.); (B.E.)
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Huang X, Zhu B, Zhang W, Chen L. Cloning and reproductive regulation of a trypsin precursor gene in Adelphocorissuturalis. Int J Biol Macromol 2021; 192:38-44. [PMID: 34597701 DOI: 10.1016/j.ijbiomac.2021.09.158] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Revised: 09/09/2021] [Accepted: 09/23/2021] [Indexed: 11/19/2022]
Abstract
Adelphocoris suturalis is a major pest of cotton. Here, we identified a trypsin precursor gene (AsTryP) in A. suturali, which has an open reading frame region of 873 bp and belongs to the trypsin superfamily. The mRNA of the AsTryP gene was detectable in every life stage and different tissues of 8-day-old females, and the gene was highly expressed in fourth-instar nymphs and the thorax of 8-day-old females. Down-regulation of AsTryP by the injection of double-stranded RNA suppressed the ovarian development and female fertility. These results reveal that trypsin precursor is involved in the reproductive process of A. suturali, and may facilitate the development of new strategies for a better control of A. suturalis.
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Affiliation(s)
- Xingxing Huang
- National Key Laboratory of Crop Genetic Improvement, National Centre of Plant Gene Research, Huazhong Agricultural University, Wuhan 430070, Hubei, China; Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, Hubei, China
| | - Bangqin Zhu
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, Hubei, China; Guiyang Center for Disease Control and Prevention, Guiyang 550003, Guizhou, China
| | - Wei Zhang
- National Key Laboratory of Crop Genetic Improvement, National Centre of Plant Gene Research, Huazhong Agricultural University, Wuhan 430070, Hubei, China; College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, Hubei, China.
| | - Lizhen Chen
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, Hubei, China.
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Hu H, Hu Y, Xia L, Li G. Tetraphenylethene Functionalized Polyhedral Oligomeric Silsesquioxane Fluorescent Probe for Rapid and Selective Trifluralin Sensing in Vegetables and Fruits. Chem Asian J 2021; 16:3970-3977. [PMID: 34606687 DOI: 10.1002/asia.202101024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 09/30/2021] [Indexed: 01/08/2023]
Abstract
A novel fluorescent probe was designed and synthesized from tetraphenylethene (TPE) and polyhedral oligomeric silsesquioxanes (POSS) via Heck-palladium catalyzed cross-coupling reaction. The as-synthesized TPE functionalized probe performed good solvent stability and selectively preconcentration capability towards target analyte due to its stable structure and the adsorption property. The morphology as well as the physical and chemical properties of the POSS@TPE were carefully characterized. The POSS@TPE was employed to develop an effective fluorescent probe for trifluralin, with a response range of 0.1-80 mg/kg and a detection limit of 0.102 mg/kg. The mixed mechanisms of inner-filter effect (IFE) and photoinduced electron transfer (PET) explain the selectivity of POSS@TPE. Rapid detection for trifluralin in tomato and celery has been achieved with recoveries between 99.4-120.7% (RSD≤3.4%), and the results were verified compared with GC-MS method.
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Affiliation(s)
- Hongzhi Hu
- School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Yufei Hu
- School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Ling Xia
- School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Gongke Li
- School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, P. R. China
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The Effect of Mirid Density on Volatile-Mediated Foraging Behaviour of Apolygus lucorum and Peristenus spretus. INSECTS 2021; 12:insects12100870. [PMID: 34680639 PMCID: PMC8538341 DOI: 10.3390/insects12100870] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 09/12/2021] [Accepted: 09/16/2021] [Indexed: 11/17/2022]
Abstract
Simple Summary Since the widespread adoption of Bt cotton in the late 1990s, the green mirid bug, Apolygus lucorum (Hemiptera: Miridae), has become one of the most important pests in cotton fields and some other crops. To manage this destructive pest, Peristenus spretus (Hymenoptera: Braconidae) has been tested in augmentative biological control. In this study, after cotton plants were damaged by different densities of A. lucorum, the behavioral responses of A. lucorum and P. spretus to cotton plants volatiles were evaluated, and the quality and quantity of volatiles from cotton plants were analyzed. The results demonstrated that HIPVs emitted by plants in response to A. lucorum could be influenced by the pest density and could be identified by P. spretus as a signal of the host. Our results would help understand how P. spretus plays a role in biological control against A. lucorum. Abstract Plants would release herbivore-induced plant volatiles (HIPVs) to repel herbivores and attract natural enemies after being damaged by herbivores. In this study, after cotton plants were damaged by different densities of Apolygus lucorum, the behavioral responses of A. lucorum and Peristenus spretus to cotton plants volatiles were evaluated, and the quality and quantity of volatiles from cotton plants were analyzed. Only when cotton plants were damaged by four bugs did both A. lucorum and P. spretus show an obvious response to damaged cotton plants, which indicates that cotton defense is correlated with pest density. The collection and analysis of volatiles reveals that the increase in pest density results in the emission of new compounds and an increase in the total number of volatiles with an alteration in proportions among the compounds in the blend. These changes in volatile profiles might provide wasps and mirids with specific information on host habitat quality and thus could explain the behavioral responses of parasitoids and pests.
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Zhang S, Yan S, Zhang Z, Cao S, Li B, Liu Y, Wang G. Identification and functional characterization of sex pheromone receptors in mirid bugs (Heteroptera: Miridae). INSECT BIOCHEMISTRY AND MOLECULAR BIOLOGY 2021; 136:103621. [PMID: 34233213 DOI: 10.1016/j.ibmb.2021.103621] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 06/09/2021] [Accepted: 07/01/2021] [Indexed: 06/13/2023]
Abstract
Mirid bugs are a group of important insect pests that cause large annual losses in agricultural production. Many studies have focused on the isolation and identification of sex pheromones in mirid bugs, and the components and biological activity of the sex pheromones have also been studied as a way to control these pests. However, few studies have focused on the mechanisms of pheromone perception. In this study, we identified the odorant receptor repertoire in three mirid bug species, Apolygus lucorum, Adelphocoris lineolatus, and Adelphocoris suturalis using antennal transcriptome sequencing and bioinformatics analysis. The candidate pheromone receptor (PR) genes were then identified by comparative transcriptomic and expression pattern analysis. Importantly, in vitro functional studies have shown that the candidate PRs have robust responses to the main mirid bug sex pheromone components (E)-2-hexenyl butyrate (E2HB) and hexyl butyrate (HB). Our study uncovered the mechanism of pheromone peripheral coding in these three species and elucidated the mechanism by which mirid bugs can specifically recognize a mate. Moreover, the results of our study will provide a theoretical basis for screening effective sex attractants or mating disturbance agents at the molecular and neural levels for enhanced control of these destructive pests.
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Affiliation(s)
- Sai Zhang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Shuwei Yan
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Zhixiang Zhang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Song Cao
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Bin Li
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Yang Liu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China.
| | - Guirong Wang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China; Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, China.
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Horikoshi RJ, Dourado PM, Berger GU, de S Fernandes D, Omoto C, Willse A, Martinelli S, Head GP, Corrêa AS. Large-scale assessment of lepidopteran soybean pests and efficacy of Cry1Ac soybean in Brazil. Sci Rep 2021; 11:15956. [PMID: 34354186 PMCID: PMC8342623 DOI: 10.1038/s41598-021-95483-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Accepted: 07/26/2021] [Indexed: 02/06/2023] Open
Abstract
The soybean technology MON 87701 × MON 89788, expressing Cry1Ac and conferring tolerance to glyphosate, has been widely adopted in Brazil since 2013. However, pest shifts or resistance evolution could reduce the benefits of this technology. To assess Cry1Ac soybean performance and understand the composition of lepidopteran pest species attacking soybeans, we implemented large-scale sampling of larvae on commercial soybean fields during the 2019 and 2020 crop seasons to compare with data collected prior to the introduction of Cry1Ac soybeans. Chrysodeixis includens was the main lepidopteran pest in non-Bt fields. More than 98% of larvae found in Cry1Ac soybean were Spodoptera spp., although the numbers of Spodoptera were similar between Cry1Ac soybean and non-Bt fields. Cry1Ac soybean provided a high level of protection against Anticarsia gemmatalis, C. includens, Chloridea virescens and Helicoverpa spp. Significant reductions in insecticide sprays for lepidopteran control in soybean were observed from 2012 to 2019. Our study showed that C. includens and A. gemmatalis continue to be primary lepidopteran pests of soybean in Brazil and that Cry1Ac soybean continues to effectively manage the target lepidopteran pests. However, there was an increase in the relative abundance of non-target Spodoptera spp. larvae in both non-Bt and Cry1Ac soybeans.
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Affiliation(s)
- Renato J Horikoshi
- Bayer Crop Science, São Paulo, SP, Brazil.
- Departamento de Entomologia e Acarologia, Escola Superior de Agricultura "Luiz de Queiroz", Universidade de São Paulo, Piracicaba, SP, Brazil.
| | | | | | - Davi de S Fernandes
- Departamento de Entomologia e Acarologia, Escola Superior de Agricultura "Luiz de Queiroz", Universidade de São Paulo, Piracicaba, SP, Brazil
| | - Celso Omoto
- Departamento de Entomologia e Acarologia, Escola Superior de Agricultura "Luiz de Queiroz", Universidade de São Paulo, Piracicaba, SP, Brazil
| | - Alan Willse
- Regulatory Science, Bayer Crop Science, Chesterfield, MO, 63017, USA
| | - Samuel Martinelli
- Regulatory Science, Bayer Crop Science, Chesterfield, MO, 63017, USA
| | - Graham P Head
- Regulatory Science, Bayer Crop Science, Chesterfield, MO, 63017, USA
| | - Alberto S Corrêa
- Departamento de Entomologia e Acarologia, Escola Superior de Agricultura "Luiz de Queiroz", Universidade de São Paulo, Piracicaba, SP, Brazil
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Xiao Y, Li W, Yang X, Xu P, Jin M, Yuan H, Zheng W, Soberón M, Bravo A, Wilson K, Wu K. Rapid spread of a densovirus in a major crop pest following wide-scale adoption of Bt-cotton in China. eLife 2021; 10:e66913. [PMID: 34263726 PMCID: PMC8324301 DOI: 10.7554/elife.66913] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Accepted: 07/13/2021] [Indexed: 12/21/2022] Open
Abstract
Bacillus thuringiensis (Bt) crops have been widely planted and the effects of Bt-crops on populations of the target and non-target insect pests have been well studied. However, the effects of Bt-crops exposure on microorganisms that interact with crop pests have not previously been quantified. Here, we use laboratory and field data to show that infection of Helicoverpa armigera with a densovirus (HaDV2) is associated with its enhanced growth and tolerance to Bt-cotton. Moreover, field monitoring showed a much higher incidence of cotton bollworm infection with HaDV2 in regions cultivated with Bt-cotton than in regions without it, with the rate of densovirus infection increasing with increasing use of Bt-cotton. RNA-seq suggested tolerance to both baculovirus and Cry1Ac were enhanced via the immune-related pathways. These findings suggest that exposure to Bt-crops has selected for beneficial interactions between the target pest and a mutualistic microorganism that enhances its performance on Bt-crops under field conditions.
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Affiliation(s)
- Yutao Xiao
- The State Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural SciencesBeijingChina
- Shenzhen Branch, Guangdong Laboratory of Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural SciencesShenzhenChina
| | - Wenjing Li
- The State Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural SciencesBeijingChina
- Institute of Plant Protection and Soil Fertility, Hubei Academy of Agricultural SciencesWuhanChina
| | - Xianming Yang
- The State Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural SciencesBeijingChina
| | - Pengjun Xu
- Tobacco Research Institute, Chinese Academy of Agricultural SciencesQingdaoChina
- Lancaster Environment Centre, Lancaster UniversityLancasterUnited Kingdom
| | - Minghui Jin
- Shenzhen Branch, Guangdong Laboratory of Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural SciencesShenzhenChina
| | - He Yuan
- Shenzhen Branch, Guangdong Laboratory of Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural SciencesShenzhenChina
| | - Weigang Zheng
- Shenzhen Branch, Guangdong Laboratory of Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural SciencesShenzhenChina
| | - Mario Soberón
- Instituto de Biotecnología, Universidad Nacional Autónoma de MéxicoMorelosUnited States
| | - Alejandra Bravo
- Instituto de Biotecnología, Universidad Nacional Autónoma de MéxicoMorelosUnited States
| | - Kenneth Wilson
- Shenzhen Branch, Guangdong Laboratory of Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural SciencesShenzhenChina
- Lancaster Environment Centre, Lancaster UniversityLancasterUnited Kingdom
| | - Kongming Wu
- The State Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural SciencesBeijingChina
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49
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Li F, Lin L, Wang H, Duan W, Yuan L, Cao P, Yuchi Z, Wu S. Functional characterization of knockdown resistance mutations in the plant bug, Apolygus lucorum Meyer-Dür. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2021; 176:104874. [PMID: 34119219 DOI: 10.1016/j.pestbp.2021.104874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 04/13/2021] [Accepted: 05/05/2021] [Indexed: 06/12/2023]
Abstract
Apolygus lucorum could cause severe economic damage to crops in China. The pest has been controlled by pyrethroids, and the target of pyrethroids is voltage-gated sodium channel (Nav). Double mutation (L1002F/D941G) was detected in a field-strain of A. lucorum . We found there was single mutation L1002F and double mutation L1002F/D941G, but no single mutation D941G in the field. The tail currents of L1002F and L1002F/D941G were reduced by two types pyrethroid. In contrast, D941G showed a similar activity as wild type channel. D941G and L1002F are both located in domain II but do not face the pyrethroid-binding pocket directly, suggesting that they might affect the insecticide-binding allosterically. L1002F/D941G has significantly different responses to pyrethroids compared to the wild type, but D941G alone has little effect compared to wild type. Our finding demonstrates that some mutation do not cause resistance by itself but can enhance the resistance combined with other mutations.
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Affiliation(s)
- Fen Li
- College of Plant Protection, Hainan University, Haikou 570228, China
| | - Lianyun Lin
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, Collaborative Innovation Center of Chemical Science and Engineering, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Hao Wang
- College of Plant Protection, Hainan University, Haikou 570228, China; China College of Plant Protection, Henan Agricultural University, Zhengzhou 450002, China
| | - Wenbo Duan
- College of Plant Protection, Hainan University, Haikou 570228, China; China College of Plant Protection, Henan Agricultural University, Zhengzhou 450002, China
| | - Linlin Yuan
- College of Plant Protection, Hainan University, Haikou 570228, China
| | - Peng Cao
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, Collaborative Innovation Center of Chemical Science and Engineering, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Zhiguang Yuchi
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, Collaborative Innovation Center of Chemical Science and Engineering, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China.
| | - Shaoying Wu
- College of Plant Protection, Hainan University, Haikou 570228, China.
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50
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Mi X, Feng G, Hu Y, Zhang J, Chen L, Corlett RT, Hughes AC, Pimm S, Schmid B, Shi S, Svenning JC, Ma K. The global significance of biodiversity science in China: an overview. Natl Sci Rev 2021; 8:nwab032. [PMID: 34694304 PMCID: PMC8310773 DOI: 10.1093/nsr/nwab032] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Revised: 01/03/2021] [Accepted: 02/14/2021] [Indexed: 01/13/2023] Open
Abstract
Biodiversity science in China has seen rapid growth over recent decades, ranging from baseline biodiversity studies to understanding the processes behind evolution across dynamic regions such as the Qinghai-Tibetan Plateau. We review research, including species catalogues; biodiversity monitoring; the origins, distributions, maintenance and threats to biodiversity; biodiversity-related ecosystem function and services; and species and ecosystems' responses to global change. Next, we identify priority topics and offer suggestions and priorities for future biodiversity research in China. These priorities include (i) the ecology and biogeography of the Qinghai-Tibetan Plateau and surrounding mountains, and that of subtropical and tropical forests across China; (ii) marine and inland aquatic biodiversity; and (iii) effective conservation and management to identify and maintain synergies between biodiversity and socio-economic development to fulfil China's vision for becoming an ecological civilization. In addition, we propose three future strategies: (i) translate advanced biodiversity science into practice for biodiversity conservation; (ii) strengthen capacity building and application of advanced technologies, including high-throughput sequencing, genomics and remote sensing; and (iii) strengthen and expand international collaborations. Based on the recent rapid progress of biodiversity research, China is well positioned to become a global leader in biodiversity research in the near future.
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Affiliation(s)
- Xiangcheng Mi
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
| | - Gang Feng
- Ministry of Education Key Laboratory of Ecology and Resource Use of the Mongolian Plateau and Inner Mongolia Key Laboratory of Grassland Ecology, School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China
| | - Yibo Hu
- Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Jian Zhang
- Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China
| | - Lei Chen
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
| | - Richard T Corlett
- Center for Integrative Conservation, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun 666303, China
- Center of Conservation Biology, Core Botanical Gardens, Chinese Academy of Sciences, Menglun, 666303, China
| | - Alice C Hughes
- Center for Integrative Conservation, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun 666303, China
- Center of Conservation Biology, Core Botanical Gardens, Chinese Academy of Sciences, Menglun, 666303, China
| | - Stuart Pimm
- Nicholas School of the Environment, Duke University, Durham, NC 27708, USA
| | - Bernhard Schmid
- Department of Geography, Remote Sensing Laboratories, University of Zurich, Zurich 8057, Switzerland
| | - Suhua Shi
- State Key Laboratory of Biocontrol, Guangdong Key Laboratory of Plant Resources, Key Laboratory of Biodiversity Dynamics and Conservation of Guangdong Higher Education Institutes, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China
| | - Jens-Christian Svenning
- Center for Biodiversity Dynamics in a Changing World (BIOCHANGE) and Section for Ecoinformatics and Biodiversity, Department of Biology, Aarhus University, DK-8000 Aarhus C, Denmark
| | - Keping Ma
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
- Universityof Chinese Academy of Sciences, Beijing 100049, China
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