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Yadav J, Jasrotia P, Jaglan MS, Sareen S, Kashyap PL, Kumar S, Yadav SS, Singh G, Singh GP. Unravelling the novel genetic diversity and marker-trait associations of corn leaf aphid resistance in wheat using microsatellite markers. PLoS One 2024; 19:e0289527. [PMID: 38386640 PMCID: PMC10883527 DOI: 10.1371/journal.pone.0289527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Accepted: 10/17/2023] [Indexed: 02/24/2024] Open
Abstract
The study was conducted to identify novel simple sequence repeat (SSR) markers associated with resistance to corn aphid (CLA), Rhopalosiphum maidis L. in 48 selected bread wheat (Triticum aestivum L.) and wild wheat (Aegilops spp. & T. dicoccoides) genotypes during two consecutive cropping seasons (2018-19 and 2019-20). A total of 51 polymorphic markers containing 143 alleles were used for the analysis. The frequency of the major allele ranged from 0.552 (Xgwm113) to 0.938 (Xcfd45, Xgwm194 and Xgwm526), with a mean of 0.731. Gene diversity ranged from 0.116 (Xgwm526) to 0.489 (Xgwm113), with a mean of 0.354. The polymorphic information content (PIC) value for the SSR markers ranged from 0.107 (Xgwm526) to 0.370 (Xgwm113) with a mean of 0.282. The results of the STRUCTURE analysis revealed the presence of four main subgroups in the populations. Analysis of molecular variance (AMOVA) showed that the between-group difference was around 37 per cent of the total variation contributed to the diversity by the whole germplasm, while 63 per cent of the variation was attributed between individuals within the group. A general linear model (GLM) was used to identify marker-trait associations, which detected a total of 23 and 27 significant new marker-trait associations (MTAs) at the p < 0.01 significance level during the 2018-19 and 2019-20 crop seasons, respectively. The findings of this study have important implications for the identification of molecular markers associated with CLA resistance. These markers can increase the accuracy and efficiency of aphid-resistant germplasm selection, ultimately facilitating the transfer of resistance traits to desirable wheat genotypes.
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Affiliation(s)
- Jayant Yadav
- ICAR- Indian Institute of Wheat and Barley Research, Karnal, Haryana, India
- CCS Haryana Agricultural University, Hisar, Haryana, India
| | - Poonam Jasrotia
- ICAR- Indian Institute of Wheat and Barley Research, Karnal, Haryana, India
| | | | - Sindhu Sareen
- ICAR- Indian Institute of Wheat and Barley Research, Karnal, Haryana, India
| | - Prem Lal Kashyap
- ICAR- Indian Institute of Wheat and Barley Research, Karnal, Haryana, India
| | - Sudheer Kumar
- ICAR- Indian Institute of Wheat and Barley Research, Karnal, Haryana, India
| | | | - Gyanendra Singh
- ICAR- Indian Institute of Wheat and Barley Research, Karnal, Haryana, India
| | - Gyanendra Pratap Singh
- ICAR- Indian Institute of Wheat and Barley Research, Karnal, Haryana, India
- ICAR- National Bureau of Plant Genetic Resources, New Delhi, India
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Ligonniere S, Bantz A, Raymond V, Goven D. Using RNA interference targeting a nicotinic acetylcholine receptor subunit to counteract insecticide accommodation mechanisms: example of the β1 subunit in the imidacloprid-accommodated American cockroach, Periplaneta americana. JOURNAL OF PESTICIDE SCIENCE 2024; 49:58-64. [PMID: 38450086 PMCID: PMC10912888 DOI: 10.1584/jpestics.d23-027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Accepted: 11/30/2023] [Indexed: 03/08/2024]
Abstract
Insecticide accommodation and resistance are limiting factors to the much-needed increase in agricultural production. Various physiological and cellular modifications, such as the changes of insecticide molecular targets, have been linked to these events. Thus, a previous study demonstrated that the imidacloprid accommodation set up by the cockroach Periplaneta americana after an exposure to a sublethal dose of this insecticide involves functional alterations of two nicotinic acetylcholine receptor (nAChR) subtypes. As RNA interference (RNAi) is one of the most promising strategies for controlling pest insects, we evaluated, in this study, the use of RNAi that targets the β1 nAChR subunit to counteract the imidacloprid accommodation phenomenon in cockroaches. Interestingly, we showed that ingestion of dsRNA-β1 increased the sensitivity to imidacloprid of accommodated cockroaches. Thus, we have demonstrated for the first time that RNAi that targets an nAChR subunit can counteract the accommodation mechanism to insecticide targeting nAChRs set up by an insect.
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Chirgwin E, Yang Q, Umina PA, Thia JA, Gill A, Song W, Gu X, Ross PA, Wei SJ, Hoffmann AA. Barley Yellow Dwarf Virus Influences Its Vector's Endosymbionts but Not Its Thermotolerance. Microorganisms 2023; 12:10. [PMID: 38276179 PMCID: PMC10819152 DOI: 10.3390/microorganisms12010010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 12/11/2023] [Accepted: 12/14/2023] [Indexed: 01/27/2024] Open
Abstract
The barley yellow dwarf virus (BYDV) of cereals is thought to substantially increase the high-temperature tolerance of its aphid vector, Rhopalosiphum padi, which may enhance its transmission efficiency. This is based on experiments with North American strains of BYDV and R. padi. Here, we independently test these by measuring the temperature tolerance, via Critical Thermal Maximum (CTmax) and knockdown time, of Australian R. padi infected with a local BYDV isolate. We further consider the interaction between BYDV transmission, the primary endosymbiont of R. padi (Buchnera aphidicola), and a transinfected secondary endosymbiont (Rickettsiella viridis) which reduces the thermotolerance of other aphid species. We failed to find an increase in tolerance to high temperatures in BYDV-infected aphids or an impact of Rickettsiella on thermotolerance. However, BYDV interacted with R. padi endosymbionts in unexpected ways, suppressing the density of Buchnera and Rickettsiella. BYDV density was also fourfold higher in Rickettsiella-infected aphids. Our findings indicate that BYDV does not necessarily increase the temperature tolerance of the aphid transmission vector to increase its transmission potential, at least for the genotype combinations tested here. The interactions between BYDV and Rickettsiella suggest new ways in which aphid endosymbionts may influence how BYDV spreads, which needs further testing in a field context.
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Affiliation(s)
- Evatt Chirgwin
- Cesar Australia, 95 Albert Street, Brunswick, VIC 3056, Australia;
| | - Qiong Yang
- PEARG Group, School of BioSciences, Bio21 Institute, The University of Melbourne, Parkville, VIC 2052, Australia; (J.A.T.); (A.G.); (X.G.); (P.A.R.); (A.A.H.)
| | - Paul A. Umina
- Cesar Australia, 95 Albert Street, Brunswick, VIC 3056, Australia;
- PEARG Group, School of BioSciences, Bio21 Institute, The University of Melbourne, Parkville, VIC 2052, Australia; (J.A.T.); (A.G.); (X.G.); (P.A.R.); (A.A.H.)
| | - Joshua A. Thia
- PEARG Group, School of BioSciences, Bio21 Institute, The University of Melbourne, Parkville, VIC 2052, Australia; (J.A.T.); (A.G.); (X.G.); (P.A.R.); (A.A.H.)
| | - Alex Gill
- PEARG Group, School of BioSciences, Bio21 Institute, The University of Melbourne, Parkville, VIC 2052, Australia; (J.A.T.); (A.G.); (X.G.); (P.A.R.); (A.A.H.)
| | - Wei Song
- Institute of Plant Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; (W.S.); (S.-J.W.)
| | - Xinyue Gu
- PEARG Group, School of BioSciences, Bio21 Institute, The University of Melbourne, Parkville, VIC 2052, Australia; (J.A.T.); (A.G.); (X.G.); (P.A.R.); (A.A.H.)
| | - Perran A. Ross
- PEARG Group, School of BioSciences, Bio21 Institute, The University of Melbourne, Parkville, VIC 2052, Australia; (J.A.T.); (A.G.); (X.G.); (P.A.R.); (A.A.H.)
| | - Shu-Jun Wei
- Institute of Plant Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; (W.S.); (S.-J.W.)
| | - Ary A. Hoffmann
- PEARG Group, School of BioSciences, Bio21 Institute, The University of Melbourne, Parkville, VIC 2052, Australia; (J.A.T.); (A.G.); (X.G.); (P.A.R.); (A.A.H.)
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Shi C, Tian Y, Wang Y, Guo W, Jiang W. The interaction of nicotinic acetylcholine receptor subunits Ldα3, Ldα8 and Ldβ1 with neonicotinoids in Colorado potato beetle, Leptinotarsa decemlineata. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2023; 195:105558. [PMID: 37666594 DOI: 10.1016/j.pestbp.2023.105558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 07/14/2023] [Accepted: 07/25/2023] [Indexed: 09/06/2023]
Abstract
The Colorado potato beetle (CPB), Leptinotarsa decemlineata (Say), is an extremely destructive notifiable quarantine pest. Over the last two decades, neonicotinoid insecticides, particularly thiamethoxam and imidacloprid, have been used to control it in Xinjiang, and local field populations have developed different levels of resistance in consequence. However, the contributions of nicotinic acetylcholine receptors (nAChRs) to neonicotinoid resistance are currently poorly understood in CPB. Previous studies have shown that nAChRα1, α3, α8 and β1 are major target subunits for neonicotinoids in some model and important agricultural insects including nAChRα1 subunit of L. decemlineata (Ldα1). In this study, the expression levels of Ldα3, Ldα8 and Ldβ1 following 72 h of treatments with median lethal doses of thiamethoxam and imidacloprid were compared using real-time quantitative PCR. These genes were then individually and simultaneously knocked down with Ldα1 by RNA interference (RNAi) using a double-stranded RNA (dsRNA) feeding method for six days to explore their roles in CPB susceptibility to imidacloprid and thiamethoxam. The results showed that the expressions of Ldα3, Ldα8 and Ldβ1 were significantly decreased by 36.99-74.89% after thiamethoxam and imidacloprid treatments, compared with the control. The significant downregulation of the target genes resulting from RNAi significantly reduced the mortality of adults exposed to thiamethoxam and imidacloprid by 34.53% -56.44% and 28.78%-43.93%, respectively. Furthermore, the adult survival rates were not affected by every dsRNA-feeding treatment, while the body weight of the test adults significantly deceased after four and six days of individual gene RNAi. This study showed that Ldα3, Ldα8 and Ldβ1 are down-regulated by thiamethoxam and imidacloprid and play important roles in the tolerance of CPB to neonicotinoids.
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Affiliation(s)
- Chengcheng Shi
- College of Plant Protection, Nanjing Agricultural University/Key Laboratory of Integrated Management of Crop Disease and Pests, Ministry of Education/Key Laboratory of Integrated Pest Management on Crops in East China, Ministry of Agriculture, Nanjing 210095, China
| | - Yitong Tian
- College of Plant Protection, Nanjing Agricultural University/Key Laboratory of Integrated Management of Crop Disease and Pests, Ministry of Education/Key Laboratory of Integrated Pest Management on Crops in East China, Ministry of Agriculture, Nanjing 210095, China
| | - Yaqi Wang
- College of Plant Protection, Nanjing Agricultural University/Key Laboratory of Integrated Management of Crop Disease and Pests, Ministry of Education/Key Laboratory of Integrated Pest Management on Crops in East China, Ministry of Agriculture, Nanjing 210095, China
| | - Wenchao Guo
- Institute of Plant Protection, Xinjiang Academy of Agricultural Sciences/Key Laboratory of Integrated Pest Management on Crop in Northwestern Oasis, Ministry Agriculture P.R. China, Urumqi, China
| | - Weihua Jiang
- College of Plant Protection, Nanjing Agricultural University/Key Laboratory of Integrated Management of Crop Disease and Pests, Ministry of Education/Key Laboratory of Integrated Pest Management on Crops in East China, Ministry of Agriculture, Nanjing 210095, China.
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Wang S, Liu X, Tang H, Li M, Gao P, Peng X, Chen M. UGT2B13 and UGT2C1 are involved in lambda-cyhalothrin resistance in Rhopalosiphum padi. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2023; 194:105528. [PMID: 37532337 DOI: 10.1016/j.pestbp.2023.105528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Revised: 07/05/2023] [Accepted: 07/10/2023] [Indexed: 08/04/2023]
Abstract
Uridine diphosphate-glucuronosyltransferases (UGTs) are major multifunctional detoxification phase II enzymes involved in the metabolic detoxification of xenobiotics. However, their roles in insecticides resistance are still unclear. In this study, we identified two UGTs genes (UGT2B13 and UGT2C1) in Rhopalosiphum padi, a serious insect pest of wheat worldwide. Bioassays results showed that the resistance ratio of R. padi resistance strain (LC-R) to lambda-cyhalothrin (LC) was 2963.8 fold. The roles of UGT2B13 and UGT2C1 in lambda-cyhalothrin resistance were evaluated. Results indicated that the UGTs contents were significantly increased in the LC resistant strain of R. padi. UGT2B13 and UGT2C1 were significantly overexpressed in the LC-R strain. Transcription levels of UGT2B13 and UGT2C1 were relatively higher in the gut of LC-R strain. RNA interference (RNAi) of UGT2B13 or UGT2C1 significantly decreased the UGTs contents of the LC-R aphids and increased mortality of R. padi exposure to the LC50 concentration of LC. This study provides a new view that UGTs are involved in LC resistance of R. padi. The findings will promote further work to detailed the functions of UGTs in the metabolism resistance of insects to insecticides.
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Affiliation(s)
- Suji Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas, Key laboratory of Plant Protection Resources and Pest Management of Ministry of Education, Key Laboratory of Integrated Pest Management on the Loess Plateau of Ministry of Agriculture and Rural Affairs, College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Xi Liu
- State Key Laboratory of Crop Stress Biology for Arid Areas, Key laboratory of Plant Protection Resources and Pest Management of Ministry of Education, Key Laboratory of Integrated Pest Management on the Loess Plateau of Ministry of Agriculture and Rural Affairs, College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Hongcheng Tang
- State Key Laboratory of Crop Stress Biology for Arid Areas, Key laboratory of Plant Protection Resources and Pest Management of Ministry of Education, Key Laboratory of Integrated Pest Management on the Loess Plateau of Ministry of Agriculture and Rural Affairs, College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Mengtian Li
- State Key Laboratory of Crop Stress Biology for Arid Areas, Key laboratory of Plant Protection Resources and Pest Management of Ministry of Education, Key Laboratory of Integrated Pest Management on the Loess Plateau of Ministry of Agriculture and Rural Affairs, College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Ping Gao
- State Key Laboratory of Crop Stress Biology for Arid Areas, Key laboratory of Plant Protection Resources and Pest Management of Ministry of Education, Key Laboratory of Integrated Pest Management on the Loess Plateau of Ministry of Agriculture and Rural Affairs, College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Xiong Peng
- State Key Laboratory of Crop Stress Biology for Arid Areas, Key laboratory of Plant Protection Resources and Pest Management of Ministry of Education, Key Laboratory of Integrated Pest Management on the Loess Plateau of Ministry of Agriculture and Rural Affairs, College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Maohua Chen
- State Key Laboratory of Crop Stress Biology for Arid Areas, Key laboratory of Plant Protection Resources and Pest Management of Ministry of Education, Key Laboratory of Integrated Pest Management on the Loess Plateau of Ministry of Agriculture and Rural Affairs, College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China..
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Wei Y, Su Y, Han X, Guo W, Zhu Y, Yao Y. Evaluation of Transgenerational Effects of Sublethal Imidacloprid and Diversity of Symbiotic Bacteria on Acyrthosiphon gossypii. INSECTS 2023; 14:insects14050427. [PMID: 37233055 DOI: 10.3390/insects14050427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 04/23/2023] [Accepted: 04/26/2023] [Indexed: 05/27/2023]
Abstract
Symbiotic bacteria and hormesis in aphids are the driving forces for pesticide resistance. However, the mechanism remains unclear. In this study, the effects of imidacloprid on the population growth parameters and symbiotic bacterial communities of three successive generations of Acyrthosiphon gossypii were investigated. The bioassay results showed that imidacloprid had high toxicity to A. gossypii with an LC50 of 1.46 mg·L-1. The fecundity and longevity of the G0 generation of A. gossypii decreased when exposed to the LC15 of imidacloprid. The net reproductive rate (R0), intrinsic rate of increase (rm), finite rate of increase (λ), and total reproductive rate (GRR) of G1 and G2 offspring were significantly increased, but those of the control and G3 offspring were not. In addition, sequencing data showed that the symbiotic bacteria of A. gossypii mainly belonged to Proteobacteria, with a relative abundance of 98.68%. The dominant genera of the symbiotic bacterial community were Buchnera and Arsenophonus. After treatment with the LC15 of imidacloprid, the diversity and species number of bacterial communities of A. gossypii decreased for G1-G3 and the abundance of Candidatus-Hamiltonella decreased, but Buchnera increased. These results provide insight into the resistance mechanism of insecticides and the stress adaptation between symbiotic bacteria and aphids.
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Affiliation(s)
- Yindi Wei
- College of Agriculture, Tarim University, Aral 843300, China
| | - Yue Su
- College of Agriculture, Tarim University, Aral 843300, China
| | - Xu Han
- College of Agriculture, Tarim University, Aral 843300, China
| | - Weifeng Guo
- College of Agriculture, Tarim University, Aral 843300, China
| | - Yue Zhu
- College of Agriculture, Tarim University, Aral 843300, China
| | - Yongsheng Yao
- College of Agriculture, Tarim University, Aral 843300, China
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Xu T, Lou K, Song D, Zhu B, Liang P, Gao X. Resistance Mechanisms of Sitobion miscanthi (Hemiptera: Aphididae) to Malathion Revealed by Synergist Assay. INSECTS 2022; 13:1043. [PMID: 36421946 PMCID: PMC9692644 DOI: 10.3390/insects13111043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 10/13/2022] [Accepted: 10/26/2022] [Indexed: 06/16/2023]
Abstract
A resistant strain (MRS) of Sitobion miscanthi was cultured by continuous selection with malathion for over 40 generations. The MRS exhibited 32.7-fold resistance to malathion compared to the susceptible strain (MSS) and 13.5-fold, 2.9-fold and 4.8-fold cross-resistance for omethoate, methomyl and beta-cypermethrin, respectively. However, no cross-resistance was found to imidacloprid in this resistant strain. The realized heritability for malathion resistance was 0.02. Inhibitors of esterase activity, both triphenyl phosphate (TPP) and S,S,S,-tributyl phosphorotrithioate (DEF) as synergists, exhibited significant synergism to malathion in the MRS strain, with 11.77-fold and 5.12-fold synergistic ratios, respectively, while piperonyl butoxide (PBO) and diethyl maleate (DEM) showed no significant synergism in the MRS strain. The biochemical assay indicated that carboxylesterase activity was higher in MRS than in MSS. These results suggest that the increase in esterase activity might play an important role in S. miscanthi resistance to malathion. Imidacloprid could be used as an alternative for malathion in the management of wheat aphid resistance.
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Chirgwin E, Yang Q, Umina PA, Gill A, Soleimannejad S, Gu X, Ross P, Hoffmann AA. Fungicides have transgenerational effects on Rhopalosiphum padi but not their endosymbionts. PEST MANAGEMENT SCIENCE 2022; 78:4709-4718. [PMID: 35866313 DOI: 10.1002/ps.7091] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 07/12/2022] [Accepted: 07/22/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND While several agricultural fungicides are known to directly affect invertebrate pests, including aphids, the mechanisms involved are often unknown. One hypothesis is that fungicides with antibacterial activity suppress bacterial endosymbionts present in aphids which are important for aphid survival. Endosymbiont-related effects are expected to be transgenerational, given that these bacteria are maternally inherited. Here, we test for these associations using three fungicides (chlorothalonil, pyraclostrobin and trifloxystrobin) against the bird cherry-oat aphid, Rhopalosiphum padi, using a microinjected strain that carried both the primary endosymbiont Buchnera and the secondary endosymbiont Rickettsiella. RESULTS We show that the fungicide chlorothalonil did not cause an immediate effect on aphid survival, whereas both strobilurin fungicides (pyraclostrobin and trifloxystrobin) decreased survival after 48 h exposure. However, chlorothalonil substantially reduced the lifespan and fecundity of the F1 generation. Trifloxystrobin also reduced the lifespan and fecundity of F1 offspring, however, pyraclostrobin did not affect these traits. None of the fungicides consistently altered the density of Buchnera or Rickettsiella in whole aphids. CONCLUSIONS Our results suggest fungicides have sublethal impacts on R. padi that are not fully realized until the generation after exposure, and these sublethal impacts are not associated with the density of endosymbionts harbored by R. padi. However, we cannot rule out other effects of fungicides on endosymbionts that might influence fitness, like changes in their tissue distribution. We discuss these results within the context of fungicidal effects on aphid suppression across generations and point to potential field applications. © 2022 Society of Chemical Industry.
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Affiliation(s)
| | - Qiong Yang
- School of BioSciences, The University of Melbourne, Victoria, Australia
| | - Paul A Umina
- Cesar Australia, Victoria, Australia
- School of BioSciences, The University of Melbourne, Victoria, Australia
| | - Alex Gill
- School of BioSciences, The University of Melbourne, Victoria, Australia
| | | | - Xinyue Gu
- School of BioSciences, The University of Melbourne, Victoria, Australia
| | - Perran Ross
- School of BioSciences, The University of Melbourne, Victoria, Australia
| | - Ary A Hoffmann
- School of BioSciences, The University of Melbourne, Victoria, Australia
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Ettinger CL, Byrne FJ, de Souza Pacheco I, Brown DJ, Walling LL, Atkinson PW, Redak RA, Stajich JE. Transcriptome and population structure of glassy-winged sharpshooters (Homalodisca vitripennis) with varying insecticide resistance in southern California. BMC Genomics 2022; 23:721. [PMID: 36273137 PMCID: PMC9587601 DOI: 10.1186/s12864-022-08939-1] [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: 08/15/2022] [Accepted: 10/13/2022] [Indexed: 12/02/2022] Open
Abstract
Background Homalodisca vitripennis Germar, the glassy-winged sharpshooter, is an invasive insect in California and a critical threat to agriculture through its transmission of the plant pathogen, Xylella fastidiosa. Quarantine, broad-spectrum insecticides, and biological control have been used for population management of H. vitripennis since its invasion and subsequent proliferation throughout California. Recently wide-spread neonicotinoid resistance has been detected in populations of H. vitripennis in the southern portions of California’s Central Valley. In order to better understand potential mechanisms of H. vitripennis neonicotinoid resistance, we performed RNA sequencing on wild-caught insecticide-resistant and relatively susceptible sharpshooters to profile their transcriptome and population structure. Results We identified 81 differentially expressed genes with higher expression in resistant individuals. The significant largest differentially expressed candidate gene linked to resistance status was a cytochrome P450 gene with similarity to CYP6A9. Furthermore, we observed an over-enrichment of GO terms representing functions supportive of roles in resistance mechanisms (cytochrome P450s, M13 peptidases, and cuticle structural proteins). Finally, we saw no evidence of broad-scale population structure, perhaps due to H. vitripennis' relatively recent introduction to California or due to the relatively small geographic scale investigated here. Conclusions In this work, we characterized the transcriptome of insecticide-resistant and susceptible H. vitripennis and identified candidate genes that may be involved in resistance mechanisms for this species. Future work should seek to build on the transcriptome profiling performed here to confirm the role of the identified genes, particularly the cytochrome P450, in resistance in H. vitripennis. We hope this work helps aid future population management strategies for this and other species with growing insecticide resistance. Supplementary Information The online version contains supplementary material available at 10.1186/s12864-022-08939-1.
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Affiliation(s)
- Cassandra L Ettinger
- Department of Microbiology and Plant Pathology, University of California, Riverside, Riverside, CA, USA.
| | - Frank J Byrne
- Department of Entomology, University of California, Riverside, Riverside, CA, USA
| | | | - Dylan J Brown
- Department of Entomology, University of California, Riverside, Riverside, CA, USA
| | - Linda L Walling
- Department of Botany and Plant Sciences, University of California, Riverside, Riverside, CA, USA.,Institute for Integrative Genome Biology, University of California, Riverside, Riverside, CA, USA
| | - Peter W Atkinson
- Department of Entomology, University of California, Riverside, Riverside, CA, USA.,Institute for Integrative Genome Biology, University of California, Riverside, Riverside, CA, USA
| | - Richard A Redak
- Department of Entomology, University of California, Riverside, Riverside, CA, USA
| | - Jason E Stajich
- Department of Microbiology and Plant Pathology, University of California, Riverside, Riverside, CA, USA. .,Institute for Integrative Genome Biology, University of California, Riverside, Riverside, CA, USA.
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10
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Zhang BZ, Zhang MY, Li YS, Hu GL, Fan XZ, Guo TX, Zhou F, Zhang P, Wu YB, Gao YF, Gao XW. MicroRNA-263b confers imidacloprid resistance in Sitobion miscanthi (Takahashi) by regulating the expression of the nAChRβ1 subunit. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2022; 187:105218. [PMID: 36127060 DOI: 10.1016/j.pestbp.2022.105218] [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: 03/22/2022] [Revised: 07/08/2022] [Accepted: 08/26/2022] [Indexed: 06/15/2023]
Abstract
The Chinese wheat aphid Sitobion miscanthi (CWA) is an important harmful pest in wheat fields. Imidacloprid plays a critical role in controlling pests with sucking mouthparts. However, imidacloprid-resistant pests have been observed after insecticide overuse. Point mutations and low expression levels of the nicotinic acetylcholine receptor β1 (nAchRβ1) subunit are the main imidacloprid-resistant mechanisms. However, the regulatory mechanism underlying nAChRβ1 subunit expression is poorly understood. In this study, a target of miR-263b was isolated from the 5'UTR of the nAchRβ1 subunit in the CWA. Low expression levels were found in the imidacloprid-resistant strain CWA. Luciferase reporter assays showed that miR-263b could combine with the 5'UTR of the nAChRβ1 subunit and suppress its expression by binding to a site in the CWA. Aphids treated with the miR-263b agomir exhibited a significantly reduced abundance of the nAchRβ1 subunit and increased imidacloprid resistance. In contrast, aphids treated with the miR-263b antagomir exhibited significantly increased nAchRβ1 subunit abundance and decreased imidacloprid resistance. These results provide a basis for an improved understanding of the posttranscriptional regulatory mechanism of the nAChRβ1 subunit and further elucidate the function of miRNAs in regulating susceptibility to imidacloprid in the CWA. These results provide a better understanding of the mechanisms of posttranscriptional regulation of nAChRβ1 and will be helpful for further studies on the role of miRNAs in the regulation of nAChRβ1 subunit resistance in homopteran pests.
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Affiliation(s)
- Bai-Zhong Zhang
- College of Resources and Environment, Henan engineering research center of biological pesticide & fertilizer development and synergistic application, Henan Institute of Science and Technology, Xinxiang 453003, PR China
| | - Meng-Yuan Zhang
- College of Resources and Environment, Henan engineering research center of biological pesticide & fertilizer development and synergistic application, Henan Institute of Science and Technology, Xinxiang 453003, PR China
| | - Ya-She Li
- College of Resources and Environment, Henan engineering research center of biological pesticide & fertilizer development and synergistic application, Henan Institute of Science and Technology, Xinxiang 453003, PR China
| | - Gui-Lei Hu
- College of Resources and Environment, Henan engineering research center of biological pesticide & fertilizer development and synergistic application, Henan Institute of Science and Technology, Xinxiang 453003, PR China
| | - Xin-Zheng Fan
- College of Resources and Environment, Henan engineering research center of biological pesticide & fertilizer development and synergistic application, Henan Institute of Science and Technology, Xinxiang 453003, PR China
| | - Tian-Xin Guo
- Department of Entomology, China Agricultural University, Beijing 100193, PR China
| | - Feng Zhou
- College of Resources and Environment, Henan engineering research center of biological pesticide & fertilizer development and synergistic application, Henan Institute of Science and Technology, Xinxiang 453003, PR China
| | - Pei Zhang
- College of Resources and Environment, Henan engineering research center of biological pesticide & fertilizer development and synergistic application, Henan Institute of Science and Technology, Xinxiang 453003, PR China
| | - Yan-Bing Wu
- College of Resources and Environment, Henan engineering research center of biological pesticide & fertilizer development and synergistic application, Henan Institute of Science and Technology, Xinxiang 453003, PR China
| | - Yang-Fan Gao
- College of Resources and Environment, Henan engineering research center of biological pesticide & fertilizer development and synergistic application, Henan Institute of Science and Technology, Xinxiang 453003, PR China
| | - Xi-Wu Gao
- Department of Entomology, China Agricultural University, Beijing 100193, PR China.
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11
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Hu GL, Lu LY, Li YS, Su X, Dong WY, Zhang BZ, Liu RQ, Shi MW, Wang HL, Chen XL. CYP4CJ6-mediated resistance to two neonicotinoid insecticides in Sitobion miscanthi (Takahashi). BULLETIN OF ENTOMOLOGICAL RESEARCH 2022; 112:646-655. [PMID: 35172917 DOI: 10.1017/s0007485322000037] [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] [Indexed: 06/14/2023]
Abstract
The wheat aphid Sitobion miscanthi (CWA) is an important harmful pest in wheat fields. Insecticide application is the main method to effectively control wheat aphids. However, CWA has developed resistance to some insecticides due to its extensive application, and understanding resistance mechanisms is crucial for the management of CWA. In our study, a new P450 gene, CYP4CJ6, was identified from CWA and showed a positive response to imidacloprid and thiamethoxam. Transcription of CYP4CJ6 was significantly induced by both imidacloprid and thiamethoxam, and overexpression of CYP4CJ6 in the imidacloprid-resistant strain was also observed. The sensitivity of CWA to these two insecticides was increased after the knockdown of CYP4CJ6. These results indicated that CYP4CJ6 could be associated with CWA resistance to imidacloprid and thiamethoxam. Subsequently, the posttranscriptional regulatory mechanism was assessed, and miR-316 was confirmed to participate in the posttranscriptional regulation of CYP4CJ6. These results are crucial for clarifying the roles of P450 in the resistance of CWA to insecticides.
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Affiliation(s)
- Gui-Lei Hu
- College of Resources and Environment, Henan Engineering Research Center of Biological Pesticide & Fertilizer Development and Synergistic Application, Henan Institute of Science and Technology, Xinxiang 453003, P.R. China
| | - Liu-Yang Lu
- College of Resources and Environment, Henan Engineering Research Center of Biological Pesticide & Fertilizer Development and Synergistic Application, Henan Institute of Science and Technology, Xinxiang 453003, P.R. China
| | - Ya-She Li
- College of Resources and Environment, Henan Engineering Research Center of Biological Pesticide & Fertilizer Development and Synergistic Application, Henan Institute of Science and Technology, Xinxiang 453003, P.R. China
| | - Xu Su
- College of Resources and Environment, Henan Engineering Research Center of Biological Pesticide & Fertilizer Development and Synergistic Application, Henan Institute of Science and Technology, Xinxiang 453003, P.R. China
| | - Wen-Yang Dong
- Department of Entomology, China Agricultural University, Beijing 100193, P.R. China
| | - Bai-Zhong Zhang
- College of Resources and Environment, Henan Engineering Research Center of Biological Pesticide & Fertilizer Development and Synergistic Application, Henan Institute of Science and Technology, Xinxiang 453003, P.R. China
| | - Run-Qiang Liu
- College of Resources and Environment, Henan Engineering Research Center of Biological Pesticide & Fertilizer Development and Synergistic Application, Henan Institute of Science and Technology, Xinxiang 453003, P.R. China
| | - Ming-Wang Shi
- College of Resources and Environment, Henan Engineering Research Center of Biological Pesticide & Fertilizer Development and Synergistic Application, Henan Institute of Science and Technology, Xinxiang 453003, P.R. China
| | - Hong-Liang Wang
- College of Resources and Environment, Henan Engineering Research Center of Biological Pesticide & Fertilizer Development and Synergistic Application, Henan Institute of Science and Technology, Xinxiang 453003, P.R. China
| | - Xi-Ling Chen
- College of Resources and Environment, Henan Engineering Research Center of Biological Pesticide & Fertilizer Development and Synergistic Application, Henan Institute of Science and Technology, Xinxiang 453003, P.R. China
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12
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Kou X, Bai S, Luo Y, Yu J, Guo H, Wang C, Zhang H, Chen C, Liu X, Ji W. Construction of a Modified Clip Cage and Its Effects on the Life-History Parameters of Sitobion avenae (Fabricius) and Defense Responses of Triticum aestivum. INSECTS 2022; 13:777. [PMID: 36135478 PMCID: PMC9503654 DOI: 10.3390/insects13090777] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 08/19/2022] [Accepted: 08/24/2022] [Indexed: 06/16/2023]
Abstract
Clip cages are commonly used to confine aphids or other small insects to a single leaf when conducting plant-small insect interaction studies; however, clip cages are usually heavy or do not efficiently transmit light, which has an impact on leaf physiology, limiting their application. Here, simple, lightweight, and transparent modified clip cages were constructed using punched clear plastic cups, cut transparent polyvinyl chloride sheets, nylon organdy mesh, and bent duck-bill clips. These cages can be clipped directly onto dicot leaves or attached to monocot leaves with bamboo skewers and elastic bands. The weight, production time, and aphid escape rates of the modified clip cages were 3.895 ± 0.004 g, less than 3 min, and 2.154 ± 0.323%, respectively. The effects of the modified clip cage on the growth, development, and reproduction of the English grain aphid (Sitobion avenae Fabricius) in comparison with the whole cage were studied. The biochemical responses of wheat (Triticum aestivum) to the cages were also investigated. No significant differences were observed in the life table parameters, nymph mortality, and adult fecundity in S. avenae confined to clip cages and whole cages, but the clip cages were more time efficient than whole cages when conducting life table studies. Moreover, the hydrogen peroxide accumulation, callose deposition, and cell necrosis in wheat leaves covered by empty clip cages and empty whole cages were similar, and significantly lower than treatments where the aphids were inside the clip cage. The results demonstrate that the modified clip cages had negligible effects on the plant and aphid physiology, suggesting that they are effective for studying plant-small insect interactions.
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Affiliation(s)
- Xudan Kou
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Agronomy, Northwest A&F University, Yangling 712100, China
| | - Shichao Bai
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Agronomy, Northwest A&F University, Yangling 712100, China
| | - Yufeng Luo
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Agronomy, Northwest A&F University, Yangling 712100, China
| | - Jiuyang Yu
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Agronomy, Northwest A&F University, Yangling 712100, China
| | - Huan Guo
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Agronomy, Northwest A&F University, Yangling 712100, China
| | - Chao Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Agronomy, Northwest A&F University, Yangling 712100, China
| | - Hong Zhang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Agronomy, Northwest A&F University, Yangling 712100, China
- Shaanxi Research Station of Crop Gene Resources and Germplasm Enhancement, Ministry of Agriculture, Yangling 712100, China
| | - Chunhuan Chen
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Agronomy, Northwest A&F University, Yangling 712100, China
- Shaanxi Research Station of Crop Gene Resources and Germplasm Enhancement, Ministry of Agriculture, Yangling 712100, China
| | - Xinlun Liu
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Agronomy, Northwest A&F University, Yangling 712100, China
- Shaanxi Research Station of Crop Gene Resources and Germplasm Enhancement, Ministry of Agriculture, Yangling 712100, China
| | - Wanquan Ji
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Agronomy, Northwest A&F University, Yangling 712100, China
- Shaanxi Research Station of Crop Gene Resources and Germplasm Enhancement, Ministry of Agriculture, Yangling 712100, China
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Effects of carboxyl and acylamino linkers in synthetic derivatives of aphid alarm pheromone (E)-β-farnesene on repellent, binding and aphicidal activity. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133658] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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14
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Xu X, Ding Q, Wang X, Wang R, Ullah F, Gao X, Song D. V101I and R81T mutations in the nicotinic acetylcholine receptor β1 subunit are associated with neonicotinoid resistance in Myzus persicae. PEST MANAGEMENT SCIENCE 2022; 78:1500-1507. [PMID: 34962090 DOI: 10.1002/ps.6768] [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: 06/04/2021] [Revised: 12/23/2021] [Accepted: 12/28/2021] [Indexed: 06/14/2023]
Abstract
BACKGROUND The peach-potato aphid, Myzus persicae (Sulzer) (Hemiptera: Aphididae), is a major pest worldwide. The intensive use of insecticides has led to the development of resistance against neonicotinoid insecticides. The R81T mutation in the nicotinic acetylcholine receptor (nAChR) beta1 subunit is considered a crucial mechanism adaptation to neonicotinoid resistance in M. persicae and Aphis gossypii. RESULTS Resistance-related mutations (R81T and V101I) were detected in the imidacloprid-resistant M. persicae AH19 population. The V101I mutation is reported for the first time. The V101I and R81T mutations existed separately, indicating that the two mutations evolved independently. Imidacloprid resistance in the AH19 population was stable without insecticide exposure. Four mutant strains were selected from the population with stable resistance. The resistance of the AH19-T, AH19-I, and AH19-TI strains to imidacloprid, thiamethoxam, and dinotefuran was significantly increased compared with the AH19-W strain. Synergism bioassays showed that the inhibition of three detoxification enzymes did not affect imidacloprid resistance in the AH19-T and AH19-I strains. Expression of nAChR β1 subunits in the AH19-W, AH19-T, and AH19-I strains remained unchanged. CONCLUSION The V101I mutation is associated with neonicotinoid resistance in M. persicae. The resistance of the AH19-T and AH19-I strains to neonicotinoids appears to be mainly due to the R81T and V101I mutations, whereas these mutations, together with changes in the cytochrome P450 monooxygenases and nAChR expression may be responsible for the development of neonicotinoid resistance in the AH19-TI strain. © 2021 Society of Chemical Industry.
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Affiliation(s)
- Xiao Xu
- Department of Entomology, China Agricultural University, Beijing, China
| | - Qian Ding
- Department of Entomology, China Agricultural University, Beijing, China
| | - Xiu Wang
- Department of Entomology, China Agricultural University, Beijing, China
| | - Ruijie Wang
- Department of Entomology, China Agricultural University, Beijing, China
| | - Farman Ullah
- Department of Entomology, China Agricultural University, Beijing, China
| | - Xiwu Gao
- Department of Entomology, China Agricultural University, Beijing, China
| | - Dunlun Song
- Department of Entomology, China Agricultural University, Beijing, China
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15
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Jones RAC, Sharman M, Trębicki P, Maina S, Congdon BS. Virus Diseases of Cereal and Oilseed Crops in Australia: Current Position and Future Challenges. Viruses 2021; 13:2051. [PMID: 34696481 PMCID: PMC8539440 DOI: 10.3390/v13102051] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 10/02/2021] [Accepted: 10/03/2021] [Indexed: 12/22/2022] Open
Abstract
This review summarizes research on virus diseases of cereals and oilseeds in Australia since the 1950s. All viruses known to infect the diverse range of cereal and oilseed crops grown in the continent's temperate, Mediterranean, subtropical and tropical cropping regions are included. Viruses that occur commonly and have potential to cause the greatest seed yield and quality losses are described in detail, focusing on their biology, epidemiology and management. These are: barley yellow dwarf virus, cereal yellow dwarf virus and wheat streak mosaic virus in wheat, barley, oats, triticale and rye; Johnsongrass mosaic virus in sorghum, maize, sweet corn and pearl millet; turnip yellows virus and turnip mosaic virus in canola and Indian mustard; tobacco streak virus in sunflower; and cotton bunchy top virus in cotton. The currently less important viruses covered number nine infecting nine cereal crops and 14 infecting eight oilseed crops (none recorded for rice or linseed). Brief background information on the scope of the Australian cereal and oilseed industries, virus epidemiology and management and yield loss quantification is provided. Major future threats to managing virus diseases effectively include damaging viruses and virus vector species spreading from elsewhere, the increasing spectrum of insecticide resistance in insect and mite vectors, resistance-breaking virus strains, changes in epidemiology, virus and vectors impacts arising from climate instability and extreme weather events, and insufficient industry awareness of virus diseases. The pressing need for more resources to focus on addressing these threats is emphasized and recommendations over future research priorities provided.
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Affiliation(s)
- Roger A. C. Jones
- UWA Institute of Agriculture, University of Western Australia, Crawley, WA 6009, Australia
| | - Murray Sharman
- Queensland Department of Agriculture and Fisheries, Ecosciences Precinct, P.O. Box 267, Brisbane, QLD 4001, Australia;
| | - Piotr Trębicki
- Grains Innovation Park, Agriculture Victoria, Department of Jobs, Precincts and Regions, Horsham, VIC 3400, Australia; (P.T.); (S.M.)
| | - Solomon Maina
- Grains Innovation Park, Agriculture Victoria, Department of Jobs, Precincts and Regions, Horsham, VIC 3400, Australia; (P.T.); (S.M.)
| | - Benjamin S. Congdon
- Department of Primary Industries and Regional Development, South Perth, WA 6151, Australia;
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16
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Watson GB, Siebert MW, Wang NX, Loso MR, Sparks TC. Sulfoxaflor - A sulfoximine insecticide: Review and analysis of mode of action, resistance and cross-resistance. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2021; 178:104924. [PMID: 34446200 DOI: 10.1016/j.pestbp.2021.104924] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 07/08/2021] [Accepted: 07/11/2021] [Indexed: 06/13/2023]
Abstract
The sulfoximines, as exemplified by sulfoxaflor (Isoclast™active), are a relatively new class of nicotinic acetylcholine receptor (nAChR) competitive modulator (Insecticide Resistance Action Committee [IRAC] Group 4C) insecticides that provide control of a wide range of sap-feeding insect pests. The sulfoximine chemistry and sulfoxaflor exhibits distinct interactions with metabolic enzymes and nAChRs compared to other IRAC Group 4 insecticides such as the neonicotinoids (Group 4A). These distinctions translate to notable differences in the frequency and degree of cross-resistance between sulfoxaflor and other insecticides. Most insect strains exhibiting resistance to a variety of insecticides, including neonicotinoids, exhibited little to no cross-resistance to sulfoxaflor. To date, only two laboratory-based studies involving four strains (Koo et al. 2014, Chen et al. 2017) have observed substantial cross-resistance (>100 fold) to sulfoxaflor in neonicotinoid resistant insects. Where higher levels of cross-resistance to sulfoxaflor are observed the magnitude of that resistance is far less than that of the selecting neonicotinoid. Importantly, there is no correlation between presence of resistance to neonicotinoids (i.e., imidacloprid, acetamiprid) and cross-resistance to sulfoxaflor. This phenomenon is consistent with and can be attributed to the unique and differentiated chemical class represented by sulfoxalfor. Recent studies have demonstrated that high levels of resistance (resistance ratio = 124-366) to sulfoxaflor can be selected for in the laboratory which thus far appear to be associated with enhanced metabolism by specific cytochrome P450s, although other resistance mechanisms have not yet been excluded. One hypothesis is that sulfoxaflor selects for and is susceptible to a subset of P450s with different substrate specificity. A range of chemoinformatic, molecular modeling, metabolism and target-site studies have been published. These studies point to distinctions in the chemistry of sulfoxaflor, and its metabolism by enzymes associated with resistance to other insecticides, as well as its interaction with insect nicotinic acetylcholine receptors, further supporting the subgrouping of sulfoxaflor (Group 4C) separate from that of other Group 4 insecticides. Herein is an expansion of an earlier review (Sparks et al. 2013), providing an update that considers prior and current studies focused on the mode of action of sulfoxaflor, along with an analysis of the presently available resistance / cross-resistance studies, and implications and recommendations regarding resistance management.
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Affiliation(s)
- Gerald B Watson
- Corteva Agriscience LLC, 9330 Zionsville Road, Indianapolis, IN 46268, United States of America.
| | - Melissa W Siebert
- Corteva Agriscience LLC, 9330 Zionsville Road, Indianapolis, IN 46268, United States of America
| | - Nick X Wang
- Corteva Agriscience LLC, 9330 Zionsville Road, Indianapolis, IN 46268, United States of America
| | - Michael R Loso
- Corteva Agriscience LLC, 9330 Zionsville Road, Indianapolis, IN 46268, United States of America
| | - Thomas C Sparks
- Corteva Agriscience LLC, 9330 Zionsville Road, Indianapolis, IN 46268, United States of America
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17
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Wang J, Song J, Wu XB, Deng QQ, Zhu ZY, Ren MJ, Ye M, Zeng RS. Seed priming with calcium chloride enhances wheat resistance against wheat aphid Schizaphis graminum Rondani. PEST MANAGEMENT SCIENCE 2021; 77:4709-4718. [PMID: 34146457 DOI: 10.1002/ps.6513] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 04/30/2021] [Accepted: 06/19/2021] [Indexed: 06/12/2023]
Abstract
BACKGROUND Calcium is an essential macronutrient for plant growth. Although it has been shown that exogenous Ca application can increase plant resistance to abiotic stress, little is known about its potential to enhance plant tolerance to biotic stress. Here, we investigated whether pretreatment of wheat (Triticum aestivum L.) seeds with calcium chloride (CaCl2 ) improves plant resistance against wheat aphid (Schizaphis graminum Rondani). The developmental time, population size, feeding behavior of aphids on plants grown from CaCl2 - and water-pretreated seeds, and plant defense responses to aphid attack were investigated. RESULTS Seed pretreatment with CaCl2 extended aphid development time and reduced aphid population size and feeding efficiency. In addition, the pretreatment significantly increased the concentration of Ca2+ in wheat leaves, and upregulated expression levels of TaCaM genes and callose synthase genes (TaGSL2, TaGSL8, TaGSL10, TaGSL12, TaGSL19, TaGSL22 and TaGSL23). Callose concentration in the leaves of plants grown from CaCl2 -pretreated seeds increased significantly upon aphid attack. Further, callose deposition was observed mainly in the phloem. CONCLUSION These results suggest that seed pretreatment with CaCl2 primes the plant response against wheat aphid attack, leading to modulation of callose deposition in the phloem in response to aphid attack. © 2021 Society of Chemical Industry.
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Affiliation(s)
- Jun Wang
- Institute of Entomology, Guizhou University, Guiyang, China
- Guizhou Provincial Key Laboratory for Agricultural Pest Management of Mountainous Regions, Guiyang, China
- Scientific Observing and Experimental Station of Crop Pests in Guiyang, Ministry of Agriculture, Guiyang, China
| | - Jia Song
- Institute of Entomology, Guizhou University, Guiyang, China
- Guizhou Provincial Key Laboratory for Agricultural Pest Management of Mountainous Regions, Guiyang, China
- Scientific Observing and Experimental Station of Crop Pests in Guiyang, Ministry of Agriculture, Guiyang, China
| | - Xiao-Bao Wu
- Institute of Entomology, Guizhou University, Guiyang, China
- Guizhou Provincial Key Laboratory for Agricultural Pest Management of Mountainous Regions, Guiyang, China
- Scientific Observing and Experimental Station of Crop Pests in Guiyang, Ministry of Agriculture, Guiyang, China
| | - Qian-Qian Deng
- Institute of Entomology, Guizhou University, Guiyang, China
- Guizhou Provincial Key Laboratory for Agricultural Pest Management of Mountainous Regions, Guiyang, China
- Scientific Observing and Experimental Station of Crop Pests in Guiyang, Ministry of Agriculture, Guiyang, China
| | - Zhong-Yan Zhu
- Institute of Entomology, Guizhou University, Guiyang, China
- Guizhou Provincial Key Laboratory for Agricultural Pest Management of Mountainous Regions, Guiyang, China
- Scientific Observing and Experimental Station of Crop Pests in Guiyang, Ministry of Agriculture, Guiyang, China
| | - Ming-Jian Ren
- Guizhou Branch of the National Wheat Improvement Center, Guiyang, China
| | - Mao Ye
- Institute of Entomology, Guizhou University, Guiyang, China
- Guizhou Provincial Key Laboratory for Agricultural Pest Management of Mountainous Regions, Guiyang, China
- Scientific Observing and Experimental Station of Crop Pests in Guiyang, Ministry of Agriculture, Guiyang, China
| | - Ren-Sen Zeng
- Key Laboratory of the Ministry of Education for Genetics, Breeding, and Multiple Uses of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
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Wang K, Zhao JN, Bai JY, Shang YZ, Zhang SQ, Hou YF, Chen MH, Han ZJ. Pyrethroid Resistance and Fitness Cost Conferred by the super-kdr Mutation M918L in Rhopalosiphum padi (Hemiptera: Aphididae). JOURNAL OF ECONOMIC ENTOMOLOGY 2021; 114:1789-1795. [PMID: 34137856 DOI: 10.1093/jee/toab117] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Indexed: 06/12/2023]
Abstract
Pyrethroid insecticides have been widely utilized for insect pest control. Target-site resistance is one of the major mechanisms explaining pest resistance to pyrethroids. This study quantified pyrethroid resistance and fitness cost conferred by the voltage-gated sodium channel (VGSC) M918L mutation in Rhopalosiphum padi. Six s-kdr-SS and six s-kdr-RS parthenogenetic lineages were established from the same field population and were reared in the laboratory without exposure to pesticides for more than one year. Enzyme activity analysis demonstrated that metabolic resistance had no impact on these lineages. Bioassays showed that the M918L mutation strongly affected pyrethroid efficiency, conferring moderate resistance to bifenthrin (type I) (39.0-fold) and high resistance to lambda-cyhalothrin (type II) (194.7-fold). Compared with the life table of s-kdr-SS lineages, s-kdr-RS lineages exhibited a relative fitness cost with significant decreases in longevity and fecundity. Meanwhile, competitive fitness was measured by blending various ratios of s-kdr-SS and s-kdr-SS aphids. The results indicated that M918L-mediated resistance showed a significant fitness cost in the presence of wild aphids without insecticide pressure. The fitness cost strongly correlated with the initial resistance allele frequency. This work characterized the novel s-kdr M918L mutation in R. padi, defined its function in resistance to different types of pyrethroids, and documented that the M918L-mediated resistance has a significant fitness cost.
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Affiliation(s)
- Kang Wang
- Nanjing Agricultural University, Nanjing, Jiangsu, China
- Northwest A&F University, State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Integrated Pest Management on Crops in Northwestern Loess Plateau, Ministry of Agriculture, Yangling, China
| | - Jun Ning Zhao
- Northwest A&F University, State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Integrated Pest Management on Crops in Northwestern Loess Plateau, Ministry of Agriculture, Yangling, China
| | - Jiao Yang Bai
- Northwest A&F University, State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Integrated Pest Management on Crops in Northwestern Loess Plateau, Ministry of Agriculture, Yangling, China
| | - Yun Zhu Shang
- Northwest A&F University, State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Integrated Pest Management on Crops in Northwestern Loess Plateau, Ministry of Agriculture, Yangling, China
| | - Si Qian Zhang
- Northwest A&F University, State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Integrated Pest Management on Crops in Northwestern Loess Plateau, Ministry of Agriculture, Yangling, China
| | - Yi Fan Hou
- Northwest A&F University, State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Integrated Pest Management on Crops in Northwestern Loess Plateau, Ministry of Agriculture, Yangling, China
| | - Mao Hua Chen
- Northwest A&F University, State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Integrated Pest Management on Crops in Northwestern Loess Plateau, Ministry of Agriculture, Yangling, China
| | - Zhao Jun Han
- Nanjing Agricultural University, Nanjing, Jiangsu, China
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Zhang BZ, Hu GL, Lu LY, Hu SF, Li YS, Su X, Dong WY, Zhen CA, Liu RQ, Kong FB, Shi MW, Chen XL. Identification of differentially expressed microRNAs under imidacloprid exposure in Sitobion miscanthi. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2021; 177:104885. [PMID: 34301353 DOI: 10.1016/j.pestbp.2021.104885] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Revised: 05/29/2021] [Accepted: 06/01/2021] [Indexed: 06/13/2023]
Abstract
Imidacloprid is a neonicotinoid that targets sucking pests, such as aphids and the green leaf bug and has been widely applied in wheat fields to control wheat aphids in China. To investigate the involvement of miRNAs in imidacloprid resistance, we sequenced small RNA libraries of Sitobion miscanthi Fabricius, across two different treatments using Illumina short-read sequencing technology. As a result, 265 microRNAs (miRNAs), of which 242 were known and 23 were novel, were identified. Quantitative analysis of miRNA levels showed that 23 miRNAs were significantly up-regulated, and 54 miRNAs were significantly down-regulated in the nymphs of S. miscanthi treated with imidacloprid in comparison with those of the control. Modulation of the abundances of differentially expressed miRNAs, smi-miR-316, smi-miR-1000, and smi-miR-iab-4 by the addition of the corresponding antagomir/inhibitor to the artificial diet significantly changed the susceptibility of S. miscanthi to imidacloprid. Subsequently, the post-transcriptional regulatory mechanism was conducted, smi-miR-278 and smi-miR-316 were confirmed to be participated in the post-transcriptional regulation of nAChRα1A and CYP4CJ6, respectively. The results suggested that miRNAs differentially expressed in response to imidacloprid could play a critical regulatory role in the metabolism of S. miscanthi to imidacloprid.
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Affiliation(s)
- Bai-Zhong Zhang
- College of Resources and Environment, Henan Institute of Science and Technology, Xinxiang 453003, PR China.
| | - Gui-Lei Hu
- College of Resources and Environment, Henan Institute of Science and Technology, Xinxiang 453003, PR China
| | - Liu-Yang Lu
- College of Resources and Environment, Henan Institute of Science and Technology, Xinxiang 453003, PR China
| | - Shuai-Fei Hu
- College of Resources and Environment, Henan Institute of Science and Technology, Xinxiang 453003, PR China
| | - Ya-She Li
- College of Resources and Environment, Henan Institute of Science and Technology, Xinxiang 453003, PR China
| | - Xu Su
- College of Resources and Environment, Henan Institute of Science and Technology, Xinxiang 453003, PR China
| | - Wen-Yang Dong
- Department of Entomology, China Agricultural University, Beijing 100193, PR China
| | - Cong-Ai Zhen
- Department of Entomology, China Agricultural University, Beijing 100193, PR China
| | - Run-Qiang Liu
- College of Resources and Environment, Henan Institute of Science and Technology, Xinxiang 453003, PR China
| | - Fan-Bin Kong
- College of Resources and Environment, Henan Institute of Science and Technology, Xinxiang 453003, PR China
| | - Ming-Wang Shi
- College of Resources and Environment, Henan Institute of Science and Technology, Xinxiang 453003, PR China
| | - Xi-Ling Chen
- College of Resources and Environment, Henan Institute of Science and Technology, Xinxiang 453003, PR China
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20
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Li M, Li X, Wang C, Li Q, Zhu S, Zhang Y, Li X, Yang F, Zhu X. Selection and Validation of Reference Genes For qRT-PCR Analysis of Rhopalosiphum padi (Hemiptera: Aphididae). Front Physiol 2021; 12:663338. [PMID: 33935809 PMCID: PMC8079785 DOI: 10.3389/fphys.2021.663338] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Accepted: 03/22/2021] [Indexed: 11/23/2022] Open
Abstract
Rhopalosiphum padi (L.) (Hemiptera: Aphididae) is an important cosmopolitan pest in cereal crops. Reference genes can significantly affect qRT-PCR results. Therefore, selecting appropriate reference genes is a key prerequisite for qRT-PCR analyses. This study was conducted to identify suitable qRT-PCR reference genes in R. padi. We systematically analyzed the expression profiles of 11 commonly used reference genes. The ΔCt method, the BestKeeper, NormFinder, geNorm algorithms, and the RefFinder online tool were used to evaluate the suitability of these genes under diverse experimental conditions. The data indicated that the most appropriate sets of reference genes were β-actin and GAPDH (for developmental stages), AK and TATA (for populations), RPS18 and RPL13 (for tissues), TATA and GAPDH (for wing dimorphism), EF-1α and RPS6 (for antibiotic treatments), GAPDH and β-actin (for insecticide treatments), GAPDH, TATA, RPS18 (for starvation-induced stress), TATA, RPS6, and AK (for temperatures), and TATA and GAPDH (for all conditions). Our study findings, which revealed the reference genes suitable for various experimental conditions, will facilitate the standardization of qRT-PCR programs, while also improving the accuracy of qRT-PCR analyses, with implications for future research on R. padi gene functions.
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Affiliation(s)
- Mengyi Li
- Heilongjiang Provincial Key Laboratory of Ecological Restoration and Resource Utilization for Cold Region, School of Life Sciences, Heilongjiang University, Harbin, China.,Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China.,State Key Laboratory for Biology of Plant Diseases and Insect Pests, Beijing, China
| | - Xinan Li
- School of Resource and Environmental Sciences, Henan Institute of Science and Technology, Xinxiang, China
| | - Chao Wang
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China.,State Key Laboratory for Biology of Plant Diseases and Insect Pests, Beijing, China
| | - Qiuchi Li
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China.,State Key Laboratory for Biology of Plant Diseases and Insect Pests, Beijing, China
| | - Saige Zhu
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China.,State Key Laboratory for Biology of Plant Diseases and Insect Pests, Beijing, China
| | - Yunhui Zhang
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China.,State Key Laboratory for Biology of Plant Diseases and Insect Pests, Beijing, China
| | - Xiangrui Li
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China.,State Key Laboratory for Biology of Plant Diseases and Insect Pests, Beijing, China
| | - Fengshan Yang
- Heilongjiang Provincial Key Laboratory of Ecological Restoration and Resource Utilization for Cold Region, School of Life Sciences, Heilongjiang University, Harbin, China
| | - Xun Zhu
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China.,State Key Laboratory for Biology of Plant Diseases and Insect Pests, Beijing, China
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21
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Czerniewicz P, Chrzanowski G. The Effect of Santolina chamaecyparissus and Tagetes patula Essential Oils on Biochemical Markers of Oxidative Stress in Aphids. INSECTS 2021; 12:insects12040360. [PMID: 33920675 PMCID: PMC8073087 DOI: 10.3390/insects12040360] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Revised: 04/09/2021] [Accepted: 04/14/2021] [Indexed: 01/24/2023]
Abstract
Simple Summary Due to numerous side effects associated with extensive use of chemical insecticides, there is a need to develop eco-friendly alternative methods for insect pest control. One of these alternatives may be the use of essential oils (EOs). An important aspect of the efficient and safe application of EOs in plant protection is the elucidation of their toxicity mechanisms towards target pests. The present study aimed to determine the effects of Santolina chamaecyparissus (L.) and Tagetes patula (L.) EOs on development and physiology of two aphid species with different feeding specializations. Myzus persicae (Sulzer) is a broad generalist and Rhopalosiphum padi (L.) is a grass specialist. Exposure to the tested EOs limited the aphids’ development and led to induction of oxidative stress within their tissues. Analysis of the physiological parameters also showed that the oligophagous R. padi was more sensitive to EO treatment than the highly polyphagous M. persicae. The results suggest that the tested EOs can affect important biochemical processes within aphid tissues and have potential as eco-friendly aphicides. Abstract This study investigated the toxicity of essential oils (EOs) from Santolina chamaecyparissus (L.) and Tagetes patula (L.) towards the green peach aphid Myzus persicae (Sulzer) and the bird cherry-oat aphid Rhopalosiphum padi (L.). The effects of the EOs on aphid population parameters and levels of biochemical markers of oxidative stress within insect tissues were analyzed. In laboratory bioassays, application of the studied EOs at sublethal concentrations reduced daily fecundity and led to a decrease in the intrinsic rate of natural increase in both aphid species. Treatment with EOs also induced generation of reactive oxygen species (ROS) within aphid tissues. The highest levels of superoxide anion and hydrogen peroxide were noted after 24 and 48 h of exposure. Moreover, a significant increase in lipid peroxidation was shown in treated aphids, especially between 48 and 72 h after exposure. The increase was more pronounced after treatment with the essential oil of S. chamaecyparissus, which also exhibited higher aphicidal activity in toxicity tests. The activities of antioxidant enzymes—superoxide dismutase (SOD) and catalase (CAT)—were significantly elevated in both aphid species in response to the tested EOs. The obtained results suggest that oxidative stress evoked by treatment with the studied EOs may be an important factor determining their toxicity towards aphids.
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Affiliation(s)
- Paweł Czerniewicz
- Institute of Biological Sciences, Faculty of Exact and Natural Sciences, Siedlce University of Natural Sciences and Humanities, Prusa 14, 08-110 Siedlce, Poland
- Correspondence:
| | - Grzegorz Chrzanowski
- Department of Biotechnology, Institute of Biology and Biotechnology, University of Rzeszow, Zelwerowicza 8B, 35-601 Rzeszow, Poland;
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22
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Gong P, Li X, Gao H, Wang C, Li M, Zhang Y, Li X, Liu E, Zhu X. Field evolved resistance to pyrethroids, neonicotinoids, organophosphates and macrolides in Rhopalosiphum padi (Linnaeus) and Sitobion avenae (Fabricius) from China. CHEMOSPHERE 2021; 269:128747. [PMID: 33172670 DOI: 10.1016/j.chemosphere.2020.128747] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 10/20/2020] [Accepted: 10/22/2020] [Indexed: 06/11/2023]
Abstract
Rhopalosiphum padi (Linnaeus) and Sitobion avenae (Fabricius) are the predominant pests coexisting on wheat plants. In this study, the susceptibilities of 29 R. padi and 30 S. avenae populations from 15 provinces in China to pyrethroids (beta-cypermethrin and bifenthrin), neonicotinoids (imidacloprid and thiamethoxam), organophosphates (omethoate and chlorpyrifos) and macrolides (avermectin) were determined during 2018-2019. The median lethal insecticide concentrations (LC50) indicated that R. padi was more sensitive than S. avenae to most of the insecticides. Monitor results showed that most wheat aphid populations were moderately resistant to pyrethroids. Two R. padi populations were highly resistant to beta-cypermethrin with 127.3-fold and 442.8-fold resistance ratio (RR), and two were highly resistant to bifenthrin (RR of 293.9 and 320.6, respectively). One S. avenae population was highly resistant to beta-cypermethrin (RR of 136.8) and one was highly resistant to bifenthrin (RR of 313.4). All populations of two wheat aphids exhibited low to moderate resistance to neonicotinoids (RR < 100). But over half populations were sensitive or exhibited low resistance to organophosphates and macrolides. The pair-wise correlation coefficients for the insecticide LC50 revealed a positive correlation between beta-cypermethrin and bifenthrin resistance, as well as between the resistance to bifenthrin and omethoate for the two-aphid species. Similarly, significant correlations were detected between the resistance to beta-cypermethrin and avermectin for R. padi. These results may be relevant for developing effective insecticide management strategies that prevent or delay the development of resistance among wheat aphids.
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Affiliation(s)
- Peipan Gong
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China; College of Plant Protection, Shenyang Agricultural University, Shenyang, 110866, China
| | - Xinan Li
- School of Resource and Environmental Sciences, Henan Institute of Science and Technology, Xinxiang, Henan, 453003, China
| | - Haifeng Gao
- Institute of Plant Protection, Xinjiang Academy of Agricultural Sciences, Key Laboratory of Integrated Pest Management on Crop in Northwestern Oasis, Ministry of Agriculture and Rural Affairs, Urumqi, 830091, China
| | - Chao Wang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Mengyi Li
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Yunhui Zhang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Xiangrui Li
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Enliang Liu
- Institute of Plant Protection, Xinjiang Academy of Agricultural Sciences, Key Laboratory of Integrated Pest Management on Crop in Northwestern Oasis, Ministry of Agriculture and Rural Affairs, Urumqi, 830091, China
| | - Xun Zhu
- 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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23
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Li Z, Wang H, An S, Yin X. Nanochitin whisker enhances insecticidal activity of chemical pesticide for pest insect control and toxicity. J Nanobiotechnology 2021; 19:49. [PMID: 33593391 PMCID: PMC7885609 DOI: 10.1186/s12951-021-00792-w] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Accepted: 02/03/2021] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Nanomaterials in plant protection promise many benefits over conventional pesticide products. Nano-enabled pesticides may alter the functionality or risk profile of active ingredients. Cationic nanochitin whiskers (NC) possess strong biological activity against wheat aphids. However, toxicity and synergistic effects of NC with chemical pesticides against pest insects has not been systemically reported. This study investigated the insecticidal enhancement by NC with Omethoate (40% EC), Imidacloprid (10% WP), and Acetamiprid (40% WG) for pest control using wheat aphid as piercing-sucking mouthparts insect. Fluorescein isothiocyanate labelled NC was used to monitor the uptake and transportation pathway of NC inside the target insects. Toxicity of NC was tested with Sprague-Dawley (SD) rat. Our findings provide a theoretical basis for future application of NC in plant protection against pest insects. RESULTS NCs synthesized by acidic hydrolysis were rod-like nanoparticles in a range of 50-150 nm in length and 30-50 nm in width, which examined by electron microscopy and dynamic light scattering methods. The charge density and zeta potential were about 63 mmol/kg and + 36.4 mV, respectively. By absorption and/or contact action of 30-50 mg/L of NC suspension, the corrected mortality of wheat aphids reached up to 80% or above after 12 h treatment, NC could be distributed through digestive system and relocated from mouth to other tissues inside the insect body. When associated with dilutions of conventional pesticides, the corrected mortality were significantly increased up to 95% or above. The dosage of the chemical pesticide and nanochitin in the mixtures (1:1 by volume) were all reduced to half. The acute oral toxicity Lethal Dose 50% (LD50) to SD rat is greater than 5000 mg/kg BW (body weight) in male and female, acute dermal toxicity LD50 is greater than 2000 mg/kg BW of NC. CONCLUSIONS NC has a strong promotive effect on insecticidal effectiveness of chemical insecticides. It was easily absorbed by plant, transported and distributed from mouth to other tissues of the insects while sucking plant fluid. Low acute oral and dermal toxicity to SD rat indicated that it is safe to apply in agriculture and food industry. NCs has a great potential for water-based nanopesticide formulation to reduce chemical pesticide use for future agro-environmental sustainability.
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Affiliation(s)
- Zhenya Li
- Department of Entomology, College of Plant Protection, Henan Agricultural University, 450002, Zhengzhou, China.,Department of Pesticide Science/Nano Agro Center, College of Plant Protection, Henan Agricultural University, 450002, Zhengzhou, China
| | - Hezhong Wang
- Department of Pesticide Science, College of Plant Protection, Henan Agricultural University, 450002, Zhengzhou, China. .,Department of Pesticide Science/Nano Agro Center, College of Plant Protection, Henan Agricultural University, 450002, Zhengzhou, China.
| | - Shiheng An
- Department of Entomology, College of Plant Protection, Henan Agricultural University, 450002, Zhengzhou, China
| | - Xinming Yin
- Department of Entomology, College of Plant Protection, Henan Agricultural University, 450002, Zhengzhou, China.
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24
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Saeed R, Abbas N, Hafez AM. Fitness cost of imidacloprid resistance in the cotton-staining bug, Dysdercus koenigii. CHEMOSPHERE 2021; 265:129118. [PMID: 33280850 DOI: 10.1016/j.chemosphere.2020.129118] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Revised: 11/10/2020] [Accepted: 11/23/2020] [Indexed: 06/12/2023]
Abstract
Dysdercus koenigii, a serious cotton-staining insect pest in many countries, has shown high resistance to imidacloprid, a systemic neonicotinoid insecticide used to control sap-sucking pests. With the aim of creating an effective management strategy, the biological traits of susceptible (SS) and imidacloprid-resistant (Imida-RS) D. koenigii, as well as their reciprocal crosses (CR1 and CR2), were investigated here using a life table established on age, stage, and two-sex patterns. Compared with SS D. koenigii, Imida-RS and CR1 strains had lower relative fitness (0.80 and 0.47, respectively) and fecundity (eggs per female); prolonged egg duration and a prolonged adult preoviposition period; shorter nymphal duration, male/female total longevity, and oviposition days, and a shorter total preoviposition period. However, there were no differences among strains in nymphal survival rates and female ratio. The CR2 D. koenigii had similar relative fitness value (1.09), suggested no fitness cost in most of the parameters. Demographic parameters, including net reproductive rate, were lower in the Imida-RS strain than in SS and CR2 D. koenigii. Similarly, the Imida-RS and CR1 strains had shorter generation time and doubling time, lower reproductive value and life expectancy relative to the SS and CR2 D. koenigii. In addition, age-specific fecundity was negatively affected in the CR1 strain compared with the other strains. These findings could help facilitate the development of rational D. koenigii control strategies.
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Affiliation(s)
- Rabia Saeed
- Entomology Section, Central Cotton Research Institute, Multan, 60000, Pakistan
| | - Naeem Abbas
- Pesticides and Environmental Toxicology Laboratory, Department of Plant Protection, College of Food and Agriculture Sciences, King Saud University, P.O. Box 2460, Riyadh, 11451, Saudi Arabia.
| | - Abdulwahab M Hafez
- Pesticides and Environmental Toxicology Laboratory, Department of Plant Protection, College of Food and Agriculture Sciences, King Saud University, P.O. Box 2460, Riyadh, 11451, Saudi Arabia.
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25
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Yang YX, Lin RH, Li Z, Wang AY, Xue C, Duan AL, Zhao M, Zhang JH. Function Analysis of P450 and GST Genes to Imidacloprid in Aphis craccivora (Koch). Front Physiol 2021; 11:624287. [PMID: 33551847 PMCID: PMC7854575 DOI: 10.3389/fphys.2020.624287] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Accepted: 12/21/2020] [Indexed: 01/25/2023] Open
Abstract
Aphis craccivora (Koch) is an economically important pest that affects legumes in worldwide. Chemical control is still the primary efficient method for A. craccivora management. However, the mechanism underlying insecticide resistance in A. craccivora has not been elucidated. A previous study observed that piperonyl butoxide (PBO) and diethyl maleate (DEM) significantly synergized imidacloprid in A. craccivora field populations, indicating that cytochrome P450 (P450) and glutathione S-transferase (GST) genes may play pivotal roles in imidacloprid resistance. In this study, 38 P450 genes and 10 GST genes were identified in A. craccivora through transcriptomic analysis. The expression levels of these P450 and GST genes were measured in susceptible (SUS) strains of A. craccivora under imidacloprid treatment with LC15, LC50, and LC85 doses. The expression levels of CYP18A1, CYP6CY21, CYP6DA1, CYP6DA2, CYP4CJ1, CYP4CJ2, and CYP380C6 were up-regulated in the three treatments. Most of these genes belong to CYP3 and CYP4 Clans. In addition, the expression levels of all P450 and GST genes in A. craccivora were also measured in the Juye (JY) and Linqing (LQ) field populations. The expression levels of CYP6DA2, CYP4CJ1, and CYP380C6 were up-regulated in the SUS strain after imidacloprid treatment at three doses, and these genes were overexpressed in the JY population. Furthermore, the sensitivity of A. craccivora to imidacloprid was significantly increased after knockdown of CYP380C6 and CYP6DA2 through RNA interference. These results may help to elucidate the mechanisms underlying of imidacloprid resistance in A. craccivora.
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Affiliation(s)
- Yuan-Xue Yang
- Cotton Research Center, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Rong-Hua Lin
- Institute for the Control of Agrochemicals, Ministry of Agriculture and Rural Affairs, Beijing, China
| | - Zhuo Li
- Cotton Research Center, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Ai-Yu Wang
- Cotton Research Center, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Chao Xue
- Cotton Research Center, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Ai-Ling Duan
- Cotton Research Center, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Ming Zhao
- Cotton Research Center, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Jian-Hua Zhang
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, China
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26
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Gong P, Chen D, Wang C, Li M, Li X, Zhang Y, Li X, Zhu X. Susceptibility of Four Species of Aphids in Wheat to Seven Insecticides and Its Relationship to Detoxifying Enzymes. Front Physiol 2021; 11:623612. [PMID: 33536942 PMCID: PMC7848177 DOI: 10.3389/fphys.2020.623612] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Accepted: 12/23/2020] [Indexed: 11/13/2022] Open
Abstract
Sitobion avenae (Fabricius), Rhopalosiphum padi (Linnaeus), Schizaphis graminum (Rondani), and Metopolophium dirhodum (Walker) (Hemiptera: Aphididae) are important pests of wheat and other cereals worldwide. In this study, the susceptibilities of four wheat aphid species to seven insecticides were assessed. Furthermore, the activities of carboxylesterase (CarE), glutathione S-transferase (GSTs), and cytochrome P450 monooxygenase (P450s) were determined in imidacloprid treated and untreated aphids. The results showed that the susceptibilities of four wheat aphid species to tested insecticides are different and M. dirhodum has shown higher tolerance to most insecticides. Relatively higher CarE and GST activities were observed in M. dirhodum, and P450s activities increased significantly in response to imidacloprid treatment. Moreover, susceptibility to imidacloprid were increased by the oxidase inhibitor piperonyl butoxide in M. dirhodum (20-fold). The results we have obtained imply that P450s may play an important role in imidacloprid metabolic process in M. dirhodum. We suggest that a highly species-specific approach is essential for managing M. dirhodum.
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Affiliation(s)
- Peipan Gong
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China.,College of Plant Protection, Shenyang Agricultural University, Shenyang, China
| | - Defeng Chen
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops, Beijing Vegetable Research Center, Ministry of Agriculture, Beijing, China.,Beijing Key Laboratory of Vegetable Germplasm Improvement, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Chao Wang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Mengyi Li
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Xinan Li
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Yunhui Zhang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Xiangrui Li
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Xun Zhu
- 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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27
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Peng X, Wang S, Huang L, Su S, Chen M. Characterization of Rhopalosiphum padi takeout-like genes and their role in insecticide susceptibility. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2021; 171:104725. [PMID: 33357548 DOI: 10.1016/j.pestbp.2020.104725] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 09/23/2020] [Accepted: 10/10/2020] [Indexed: 06/12/2023]
Abstract
Due to the extensive use of chemical insecticides, the field populations of Rhopalosiphum padi, a serious wheat pest worldwide, have developed resistance to insecticides. Therefore, deep understanding of the mechanisms of the aphid's physiological response to insecticides would be of importance for the management of insecticide resistance in pests. Takeout belongs to a protein superfamily found exclusively in insects. Previous research showed that the takeout gene had various functions in insect physiology and behavior. However, few studies have explored the functions of takeout in insect insecticide susceptibility. The susceptibility of R. padi to imidacloprid and beta-cypermethrin was tested. Thirteen takeout-like genes were identified based on the genome database of R. padi. The number of exons was variable in these takeout-like genes, and nine highly conserved amino acids (two Cysteine, two Proline, four Glycine and one Aspartic acid) were identified. Expression levels of takeout-like-2, takeout-like-3, takeout-like-5, takeout-like-8, takeout-like-10 and takeout-like-11 were significantly increased after imidacloprid treatment; seven genes (takeout-like-1, takeout-like-2, takeout-like-5, takeout-like-6, takeout-like-7, takeout-like-8 and takeout-like-11) tended to be upregulated after beta-cypermethrin treatment. RNA interference results showed that the mortalities of R. padi injected with dsTOL-2, dsTOL-5, dsTOL-8, dsTOL-10 and dsTOL-11 were significantly increased after exposure to imidacloprid in comparison with control (injection of dsGFP). Under two sublethal concentrations of beta-cypermethrin, the silencing of takeout-like-2, takeout-like-5 and takeout-like-11 significantly increased the mortalities of R. padi. These results provide evidence for the involvement of takeout-like genes in insecticide susceptibility of R. padi, which improves our understanding the determinant of insecticide susceptibility.
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Affiliation(s)
- Xiong Peng
- State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Crop Pest Integrated Pest Management on the Loess Plateau of Ministry of Agriculture and Rural Affairs, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Suji Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Crop Pest Integrated Pest Management on the Loess Plateau of Ministry of Agriculture and Rural Affairs, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Lei Huang
- State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Crop Pest Integrated Pest Management on the Loess Plateau of Ministry of Agriculture and Rural Affairs, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Sha Su
- State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Crop Pest Integrated Pest Management on the Loess Plateau of Ministry of Agriculture and Rural Affairs, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Maohua Chen
- State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Crop Pest Integrated Pest Management on the Loess Plateau of Ministry of Agriculture and Rural Affairs, Northwest A&F University, Yangling 712100, Shaanxi, China.
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Yao P, Zou A, Tian Z, Meng W, Fang X, Wu T, Cheng J. Construction and characterization of a temperature-responsive nanocarrier for imidacloprid based on mesoporous silica nanoparticles. Colloids Surf B Biointerfaces 2020; 198:111464. [PMID: 33296822 DOI: 10.1016/j.colsurfb.2020.111464] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 10/31/2020] [Accepted: 11/05/2020] [Indexed: 12/20/2022]
Abstract
Nanopesticides have great potential applications due to their stability enhancement, sustained release and target affinity. In this work, a temperature-responsive nanocarrier for imidacloprid (IMI) was constructed using mesoporous silica nanoparticles (MSNs) as the core and paraffin wax (PW) as the outer layer. IMI was loaded into MSNs by screening the drug/carrier mass ratios to obtain the optimized IMI/MSNs formulation with a high drug loading (27.47 %). IMI/MSNs were functionalized with octadecyltrimethoxysilane (C18TMS) and further coated with a temperature-responsive trigger (PW) through hydrophobic interactions. Thus, a temperature-responsive nanocarrier for IMI (PW/IMI/MSNs) was constructed. Fourier transforms infrared (FT-IR), thermogravimetric analysis (TGA) and N2 adsorption-desorption isotherm measurements confirmed the successful loading of IMI into MSNs and the coating of PW on the surface of the IMI/MSNs. X-ray diffraction (XRD) and transmission electron microscopy (TEM) analyses indicated that PW/IMI/MSNs with diameters approximately 100 nm had an ordered hexagonal mesoporous structure with a surface coating of approximately 6 nm. In addition, an in vitro release experiment showed that PW/IMI/MSNs displayed a temperature-responsive sustained release property. Correspondingly, the bioactivity assay of the PW/IMI/MSNs showed that the insecticidal activity greatly increased with temperature. This formulation is expected to have potential applications in some high-temperature areas, such as Turpan in Xinjiang Province, for improving the utilization efficiency of IMI.
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Affiliation(s)
- Pengji Yao
- State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry, Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, PR China
| | - Aihua Zou
- College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200234, PR China.
| | - Zhenfen Tian
- State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry, Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, PR China
| | - Wenyan Meng
- State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry, Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, PR China
| | - Xialun Fang
- State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry, Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, PR China
| | - Tong Wu
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, PR China
| | - Jiagao Cheng
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, PR China.
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Shan T, Zhang H, Chen C, Chen A, Shi X, Gao X. Low expression levels of nicotinic acetylcholine receptor subunits Boα1 and Boβ1 are associated with imidacloprid resistance in Bradysia odoriphaga. PEST MANAGEMENT SCIENCE 2020; 76:3038-3045. [PMID: 32285608 DOI: 10.1002/ps.5854] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 03/20/2020] [Accepted: 04/13/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Neonicotinoid insecticide imidacloprid acts on insect nicotinic acetylcholine receptors (nAChRs). The mechanisms of insect resistance to imidacloprid include target-site alteration and increased detoxification metabolism. In Bradysia odoriphaga, cytochrome P450 monooxygenase has been found involved in metabolic resistance to imidacloprid. However, the situation of target-site related resistance to imidacloprid in B. odoriphaga is still unknown. RESULTS Nine field-collected B. odoriphaga populations showed various sensitivities to imidacloprid compared with the susceptible (SS) strain, including susceptibility, decreased susceptibility, low resistance, moderate resistance and high resistance. Seven nAChR subunit genes including α1, α2, α3, α7, α8, β1 and β3, were examined for site mutation and changes in transcription levels in field populations. No nAChR polymorphism potentially related to the resistant phenotypes was found. However, differential expression of nAChR subunit genes was found in imidacloprid resistant field population. In high imidacloprid resistant population LC-2 (93.14-fold resistance), the transcription levels of α1, α2 and β1 subunits were significantly down-regulated, while the transcription levels of α3 and α8 subunits were significantly up-regulated, compared with that in SS strain. In addition, imidacloprid acute exposure induced differential expression of nAChR subunit genes in B. odoriphaga. Furthermore, RNA interference (RNAi) suppressed the transcriptional expression of Boα1 and Boβ1, and decreased mortality of B. odoriphaga by 23.03% and 18.69%, respectively, when treated with imidacloprid. CONCLUSION These results indicated that, although no target-site mutation was found in imidacloprid resistant B. odoriphaga population, the reduced expression of α1 and β1 subunits contributed to B. odoriphaga resistance to imidacloprid. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Tisheng Shan
- Department of Entomology, China Agricultural University, Beijing, China
| | - Huihui Zhang
- Department of Entomology, China Agricultural University, Beijing, China
| | - Chengyu Chen
- Department of Entomology, China Agricultural University, Beijing, China
| | - Anqi Chen
- Department of Entomology, China Agricultural University, Beijing, China
| | - Xueyan Shi
- Department of Entomology, China Agricultural University, Beijing, China
| | - Xiwu Gao
- Department of Entomology, China Agricultural University, Beijing, China
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Wang K, Bai J, Zhao J, Su S, Liu L, Han Z, Chen M. Super-kdr mutation M918L and multiple cytochrome P450s associated with the resistance of Rhopalosiphum padi to pyrethroid. PEST MANAGEMENT SCIENCE 2020; 76:2809-2817. [PMID: 32222020 DOI: 10.1002/ps.5829] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 02/27/2020] [Accepted: 03/28/2020] [Indexed: 06/10/2023]
Abstract
BACKGROUND Rhopalosiphum padi is an important pest affecting cereal crops worldwide. Pyrethroid, including lambda-cyhalothrin, has been widely used to control R. padi in the field. This work investigated the resistance levels of R. padi field populations to lambda-cyhalothrin, and analysed biochemical and molecular mechanisms of aphid resistance to the insecticide pyrethroid. RESULTS A lambda-cyhalothrin-resistant field population (JY) was sampled, and a super-kdr mutation, M918L, in the voltage-gated sodium channel (VGSC) was identified in the population. The lambda-cyhalothrin-resistant strain (LC-R) was subsequently established by selecting the field population with lambda-cyhalothrin. All individuals of the R. padi LC-R strain showed the M918L heterozygous mutation in the VGSC IIS4-IIS6 region. Cross-resistance profiles of the LC-R strain to nine insecticides were detected. Both synergistic and enzyme activity studies indicated that cytochrome P450 monooxygenase played an important role in this resistance. Further gene expression analysis showed that seven P450 genes were significantly upregulated in the LC-R strain compared with the susceptible strain. CONCLUSION Field-evolved resistance to pyrethroid insecticides has been found in R. padi. The M918L (super-kdr) mutation in the VGSC was documented for the first time in field samples obtained from an important wheat-growing area. The super-kdr mutation, as well as metabolic resistance mediated by P450 genes, was determined to contribute to the lambda-cyhalothrin resistance in R. padi. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Kang Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Crop Pest Integrated Pest Management on the Loess Plateau of Ministry of Agriculture and Rural Affairs, Northwest A&F University, Yangling, China
- Department of Entomology, College of Plant Protection, Nanjing Agricultural University, Key Laboratory of Monitoring and Management of Plant Diseases and Insects, Ministry of Agriculture and Rural Affairs, Nanjing, China
| | - Jiaoyang Bai
- State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Crop Pest Integrated Pest Management on the Loess Plateau of Ministry of Agriculture and Rural Affairs, Northwest A&F University, Yangling, China
| | - Junning Zhao
- State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Crop Pest Integrated Pest Management on the Loess Plateau of Ministry of Agriculture and Rural Affairs, Northwest A&F University, Yangling, China
| | - Sha Su
- State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Crop Pest Integrated Pest Management on the Loess Plateau of Ministry of Agriculture and Rural Affairs, Northwest A&F University, Yangling, China
| | - Lang Liu
- State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Crop Pest Integrated Pest Management on the Loess Plateau of Ministry of Agriculture and Rural Affairs, Northwest A&F University, Yangling, China
| | - Zhaojun Han
- Department of Entomology, College of Plant Protection, Nanjing Agricultural University, Key Laboratory of Monitoring and Management of Plant Diseases and Insects, Ministry of Agriculture and Rural Affairs, Nanjing, China
| | - Maohua Chen
- State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Crop Pest Integrated Pest Management on the Loess Plateau of Ministry of Agriculture and Rural Affairs, Northwest A&F University, Yangling, China
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Mc Namara L, Gauthier K, Walsh L, Thébaud G, Gaffney M, Jacquot E. Management of yellow dwarf disease in Europe in a post-neonicotinoid agriculture. PEST MANAGEMENT SCIENCE 2020; 76:2276-2285. [PMID: 32243081 DOI: 10.1002/ps.5835] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 03/13/2020] [Accepted: 04/03/2020] [Indexed: 06/11/2023]
Abstract
Barley/cereal yellow dwarf viruses (YDVs) cause yellow dwarf disease (YDD), which is a continuous risk to cereals production worldwide. These viruses cause leaf yellowing and stunting, resulting in yield reductions of up to 80%. YDVs have been a consistent but low-level problem in European cereal cultivation for the last three decades, mostly due to the availability of several effective insecticides (largely pyrethroids and more recently neonicotinoids) against aphid vectors. However, this has changed recently, with many insecticides being lost, culminating in a recent European Union (EU) regulation prohibiting outdoor use of the neonicotinoid-insecticide compounds. This change is coupled with the growing challenge of insecticide-resistant aphids, the lack of genetic resources against YDVs, and a knowledge deficit around the parameters responsible for the emergence and spread of YDD. This means that economic sustainability of cereal cultivation in several European countries including France and United Kingdom is now again threatened by this aphid-vectored viral disease. In this review, we summarize the current knowledge on the YDV pathosystem, describe management options against YDD, analyse the impacts of the neonicotinoid ban in Europe, and consider future strategies to control YDV. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Louise Mc Namara
- Teagasc, Crop Science Department, Crops, Environment and Land Use Programme, Carlow, Ireland
| | - Kevin Gauthier
- BGPI, INRAE, Cirad, Institut Agro, Univ Montpellier, Montpellier, France
- Bayer CropScience, Lyon, France
| | - Lael Walsh
- Teagasc, Horticultural Development Department, Crops, Environment and Land Use Programme, Dublin, Ireland
- Pentland Centre for Sustainability in Business, Lancaster Environment Centre, Lancaster University, Lancaster, UK
| | - Gaël Thébaud
- BGPI, INRAE, Cirad, Institut Agro, Univ Montpellier, Montpellier, France
| | - Michael Gaffney
- Teagasc, Horticultural Development Department, Crops, Environment and Land Use Programme, Dublin, Ireland
| | - Emmanuel Jacquot
- BGPI, INRAE, Cirad, Institut Agro, Univ Montpellier, Montpellier, France
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Correa LDJ, Maciel OVB, Bücker-Neto L, Pilati L, Morozini AM, Faria MV, Da-Silva PR. A Comprehensive Analysis of Wheat Resistance to Rhopalosiphum padi (Hemiptera: Aphididae) in Brazilian Wheat Cultivars. JOURNAL OF ECONOMIC ENTOMOLOGY 2020; 113:1493-1503. [PMID: 32249292 DOI: 10.1093/jee/toaa059] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Indexed: 05/19/2023]
Abstract
Rhopalosiphum padi L. is one of the predominant aphids affecting wheat crops worldwide. Therefore, the identification of resistant genotypes and the understanding of molecular response mechanisms involved in wheat resistance to this aphid may contribute to the development of new breeding strategies. In this study, we evaluated the resistance of 15 wheat cultivars to R. padi and performed morpho-histological and gene expression analyses of two wheat cultivars (BRS Timbaúva, resistant and Embrapa 16, susceptible) challenged and unchallenged by R. padi. The main findings of our work are as follows: 1) most Brazilian wheat cultivars recently released are resistant to R. padi; 2) Green leaf volatiles are probably involved in the resistance of the BRS Timbaúva cultivar to the aphid; 3) trichomes were more abundant and larger in the resistant cultivar; 4) the internal morphology did not show differences between cultivars; 5) the lipoxygenase-encoding gene was downregulated in the susceptible cultivar and basal expression remained level in the resistant cultivar; and 6) the expression of resistance-related proteins was induced in the resistant but not in the susceptible cultivar. Lipoxygenase is the first enzyme in the octadecanoic pathway, a well-known route for the synthesis of signaling molecules involved in the activation of plant defense. The overall analyses suggest that the key steps in BRS Timbaúva resistance to R. padi may be presence or absence of green leaf volatiles decreasing the aphid preference and the action of nonglandular trichome as a physical barrier, which allows continuous lipoxygenase-encoding gene expression.
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Affiliation(s)
- Leia de Jesus Correa
- Plant Genetics and Molecular Biology Laboratory, Graduate Program in Agronomy, Universidade Estadual do Centro-Oeste, UNICENTRO, Guarapuava, PR, Brazil
| | - Orlando Vilas Boas Maciel
- Plant Genetics and Molecular Biology Laboratory, Graduate Program in Agronomy, Universidade Estadual do Centro-Oeste, UNICENTRO, Guarapuava, PR, Brazil
| | - Lauro Bücker-Neto
- Department of Biological Sciences, Universidade Estadual do Centro-Oeste, UNICENTRO, Guarapuava, Paraná, Brazil
| | - Laura Pilati
- Department of Biological Sciences, Universidade Estadual do Centro-Oeste, UNICENTRO, Guarapuava, Paraná, Brazil
| | - Ana Maria Morozini
- Department of Biological Sciences, Universidade Estadual do Centro-Oeste, UNICENTRO, Guarapuava, Paraná, Brazil
| | - Marcos Ventura Faria
- Plant Genetics and Molecular Biology Laboratory, Graduate Program in Agronomy, Universidade Estadual do Centro-Oeste, UNICENTRO, Guarapuava, PR, Brazil
| | - Paulo Roberto Da-Silva
- Plant Genetics and Molecular Biology Laboratory, Graduate Program in Agronomy, Universidade Estadual do Centro-Oeste, UNICENTRO, Guarapuava, PR, Brazil
- Department of Biological Sciences, Universidade Estadual do Centro-Oeste, UNICENTRO, Guarapuava, Paraná, Brazil
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Mezei I, Bielza P, Siebert MW, Torne M, Gomez LE, Valverde-Garcia P, Belando A, Moreno I, Grávalos C, Cifuentes D, Sparks TC. Sulfoxaflor efficacy in the laboratory against imidacloprid-resistant and susceptible populations of the green peach aphid, Myzus persicae: Impact of the R81T mutation in the nicotinic acetylcholine receptor. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2020; 166:104582. [PMID: 32448428 DOI: 10.1016/j.pestbp.2020.104582] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 04/07/2020] [Accepted: 04/08/2020] [Indexed: 06/11/2023]
Abstract
A key to effective insect pest management and insecticide resistance management is to provide growers with a range of new tools as potential alternatives to existing compounds or approaches. Sulfoxaflor (Isoclast™ active) is a new sulfoximine insecticide which is active on a broad range of sap-feeding insects, including species that have reduced susceptibility to currently used insecticides, such as imidacloprid from the neonicotinoid class. Sulfoxaflor (SFX) and imidacloprid (IMI) were tested in laboratory bioassays to compare the susceptibility of field populations of green peach aphid, Myzus persicae (Sulzer), exhibiting varying degrees of resistance involving an alteration (R81T) to the insect nicotinic acetylcholine receptor. The LC50 values for M. persicae exposed to SFX ranged from 0.09 to 1.31 (mg litre-1), whereas when the same populations were exposed to IMI the LC50 values ranged from 0.6 to 76.2 (mg litre-1). M. persicae were significantly more sensitive to SFX as compared to IMI for nine of the 13 populations tested. For M. persicae populations confirmed to be homozygous susceptible (ss) or heterozygous rs) for the R81T point mutation, there was no significant differences in the observed LC50 values for either SFX or IMI relative to the susceptible reference population (15LP1). However, in all M persicae populations that were homozygous (rr) for the R81T point mutation, susceptibility was significantly less to IMI as compared to the reference population with resistance ratios ranging from 22.1 to 63.5-fold. In contrast, only one homozygous resistant population (15MP9) exhibited a statistically significant change in susceptibility (RR = 10-fold) to SFX as compared to the reference population, which was far less than the 56-fold observed for imidacloprid in that same population. Thus, this study indicates there is no specific correlation between the laboratory efficacy of SFX and IMI in field collected populations in Spain displaying varying degrees of resistance to IMI. Furthermore, the presence of target site resistance in M. persicae to IMI, in the form of the R81T mutation, does not a priori translate to a reduction in sensitivity to sulfoxaflor. Consequently, SFX can be an effective tool for use in insect pest management programs for green peach aphid. These data also serve as a baseline reference for green peach aphid sensitivity to SFX prior to commercial uses in Spain.
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Affiliation(s)
- Imre Mezei
- Corteva Agriscience, Neumann János u.1, 2040 Budaőrs, Hungary.
| | - Pablo Bielza
- Universidad Politécnica de Cartagena, Paseo Alfonso XIII 48, 30203 Cartagena, Spain
| | - Melissa W Siebert
- Corteva Agriscience, 9330 Zionsville Road, Indianapolis, IN 46268, United States of America
| | - Maria Torne
- Corteva Agriscience, Joaquín Turina 2, Oficina 6, 28224 Pozuelo de Alarcón, Spain
| | - Luis E Gomez
- Corteva Agriscience, 9330 Zionsville Road, Indianapolis, IN 46268, United States of America
| | - Pablo Valverde-Garcia
- Corteva Agriscience, 9330 Zionsville Road, Indianapolis, IN 46268, United States of America
| | - Ana Belando
- Universidad Politécnica de Cartagena, Paseo Alfonso XIII 48, 30203 Cartagena, Spain
| | - Inmaculada Moreno
- Universidad Politécnica de Cartagena, Paseo Alfonso XIII 48, 30203 Cartagena, Spain
| | - Carolina Grávalos
- Universidad Politécnica de Cartagena, Paseo Alfonso XIII 48, 30203 Cartagena, Spain
| | - Dina Cifuentes
- Universidad Politécnica de Cartagena, Paseo Alfonso XIII 48, 30203 Cartagena, Spain
| | - Thomas C Sparks
- Corteva Agriscience, 9330 Zionsville Road, Indianapolis, IN 46268, United States of America
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Enders LS, Rault LC, Heng-Moss TM, Siegfried BD, Miller NJ. Transcriptional responses of soybean aphids to sublethal insecticide exposure. INSECT BIOCHEMISTRY AND MOLECULAR BIOLOGY 2020; 118:103285. [PMID: 31760137 DOI: 10.1016/j.ibmb.2019.103285] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 11/07/2019] [Accepted: 11/18/2019] [Indexed: 06/10/2023]
Abstract
Insecticides are a key tool in the management of many insect pests of agriculture, including soybean aphids. The selection imposed by insecticide use has often lead to the evolution of resistance by the target pest through enhanced detoxification mechanisms. We hypothesised that exposure of insecticide-susceptible aphids to sublethal doses of insecticides would result in the up-regulation of genes involved in detoxification of insecticides, revealing the genes upon which selection might act in the field. We used the soybean aphid biotype 1 reference genome, version 6.0 as a reference to analyze RNA-Seq data. We identified multiple genes with potential detoxification roles that were up-regulated 12 h after sublethal exposure to esfenvalerate or thiamethoxam. However, these genes were part of a dramatic burst of differential gene expression in which thousands of genes were up- or down-regulated, rather than a defined response to insecticides. Interestingly, the transcriptional burst observed at 12 h s declined dramatically by 24-hrs post-exposure, suggesting a general stress response that may become fine-tuned over time.
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Affiliation(s)
- Laramy S Enders
- Department of Entomology, University of Nebraska-Lincoln, Entomology Hall, Lincoln, NE, 68583, USA; Department of Entomology, Purdue University, 901 W State St, West Lafayette, IN, 47907, USA
| | - Leslie C Rault
- Department of Entomology, University of Nebraska-Lincoln, Entomology Hall, Lincoln, NE, 68583, USA
| | - Tiffany M Heng-Moss
- Department of Entomology, University of Nebraska-Lincoln, Entomology Hall, Lincoln, NE, 68583, USA
| | - Blair D Siegfried
- Department of Entomology, University of Nebraska-Lincoln, Entomology Hall, Lincoln, NE, 68583, USA; Department of Entomology and Nematology, University of Florida, 1881 Natural Area Drive, Gainesville, FL, 32611, USA
| | - Nicholas J Miller
- Department of Entomology, University of Nebraska-Lincoln, Entomology Hall, Lincoln, NE, 68583, USA; Department of Biology, Illinois Institute of Technology, 3101 S Dearborn St, Chicago, IL, 60616, USA.
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Deng D, Duan W, Wang H, Zhang K, Guo J, Yuan L, Wang L, Wu S. Assessment of the effects of lethal and sublethal exposure to dinotefuran on the wheat aphid Rhopalosiphum padi (Linnaeus). ECOTOXICOLOGY (LONDON, ENGLAND) 2019; 28:825-833. [PMID: 31325006 DOI: 10.1007/s10646-019-02080-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 07/06/2019] [Indexed: 06/10/2023]
Abstract
The wheat aphid Rhopalosiphum padi (Linnaeus) (Hemiptera: Aphididae) is a devastating pest of wheat crops worldwide. Dinotefuran, a novel neonicotinoid insecticide, has been used to prevent piercing-sucking agricultural insects, such as R. padi. This research showed that the dinotefuran not only caused direct mortality but also affected the physiology of R. padi via sublethal effects. In this study, residual film bioassay results indicated that there were no significant differences in the toxicity of dinotefuran between field in 2017 and laboratory strains. However, the longevity, fecundity and female preoviposition of the F0 generation were significantly decreased by exposure to different sublethal doses (L10, L20 and L30) of dinotefuran. In contrast, the fecundity and female preoviposition of the F1 generation were significantly increased by the sublethal treatment L20, although this dose reduced net reproductive rate, intrinsic rate of increase and finite rate of increase. These findings are the first laboratory evidence of hormesis attributable to low dinotefuran doses. Developmental duration of nymphs was significantly increased by the sublethal doses L20 and L30 but not L10. Sublethal exposure to dinotefuran can increase the transgenerational population growth of R. padi and affected demographic parameters of the target insect. This study provides useful data for developing management strategies for R. padi involving the use of dinotefuran.
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Affiliation(s)
- Denghui Deng
- College of Plant Protection, Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests, Hainan University, Haikou, 570228, Hainan, China
- College of Plant Protection, Henan Agricultural University, Zhengzhou, 450002, Henan, China
| | - Wenbo Duan
- College of Plant Protection, Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests, Hainan University, Haikou, 570228, Hainan, China
- College of Plant Protection, Henan Agricultural University, Zhengzhou, 450002, Henan, China
| | - Hao Wang
- College of Plant Protection, Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests, Hainan University, Haikou, 570228, Hainan, China
- College of Plant Protection, Henan Agricultural University, Zhengzhou, 450002, Henan, China
| | - Kun Zhang
- College of Plant Protection, Henan Agricultural University, Zhengzhou, 450002, Henan, China
| | - Jianglong Guo
- College of Plant Protection, Henan Agricultural University, Zhengzhou, 450002, Henan, China
| | - Linlin Yuan
- College of Plant Protection, Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests, Hainan University, Haikou, 570228, Hainan, China
- College of Plant Protection, Henan Agricultural University, Zhengzhou, 450002, Henan, China
| | - Likui Wang
- College of Plant Protection, Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests, Hainan University, Haikou, 570228, Hainan, China
- College of Plant Protection, Henan Agricultural University, Zhengzhou, 450002, Henan, China
| | - Shaoying Wu
- College of Plant Protection, Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests, Hainan University, Haikou, 570228, Hainan, China.
- College of Plant Protection, Henan Agricultural University, Zhengzhou, 450002, Henan, China.
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Rubio-Meléndez ME, Barrios-SanMartin J, Pina-Castro FE, Figueroa CC, Ramirez CC. Asexual reproduction of a few genotypes favored the invasion of the cereal aphid Rhopalosiphum padi in Chile. PeerJ 2019; 7:e7366. [PMID: 31388475 PMCID: PMC6662566 DOI: 10.7717/peerj.7366] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Accepted: 06/27/2019] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND Aphids (Hemiptera: Aphididae) are insects with one of the highest potentials for invasion. Several aphid species are present globally due to introduction events; they represent important pests of agroecosystems. The bird cherry-oat aphid Rhopalosiphum padi (Linnaeus) is a major pest of cereals and pasture grasses worldwide. Here, we report the genetic features of populations of R. padi that colonize different cereal crops in central Chile. METHODS Rhopalosiphum padi individuals were collected in central Chile and genotyped at six microsatellite loci. The most frequent multilocus genotype (MLG) was then studied further to assess its reproductive performance across cereal hosts under laboratory conditions. RESULTS Populations of R. padi in Chile are characterized by a low clonal diversity (G/N = 62/377 = 0.16) and the overrepresentation of a few widely distributed MLGs. One of the MLGs constituted roughly half of the sample and was observed in all sampled populations at high frequencies. Furthermore, this putative aphid "superclone" exhibited variations in its reproductive performance on cereals most commonly cultivated in Chile. The sampled populations also exhibited weak signs of genetic differentiation among hosts and localities. Our findings suggest that (1) obligate parthenogenesis is the primary reproductive mode of R. padi in Chile in the sampled range and (2) its introduction involved the arrival of a few genotypes that multiplied asexually.
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Affiliation(s)
- María E. Rubio-Meléndez
- Centre for Molecular and Functional Ecology in Agroecosystems, Universidad de Talca, Talca, Maule, Chile
- Instituto de Ciencias Biológicas, Universidad de Talca, Talca, Maule, Chile
- Centro de Bioinformática y Simulación Molecular, Facultad de Ingeniería, Universidad de Talca, Talca, Maule, Chile
| | - Joceline Barrios-SanMartin
- Centre for Molecular and Functional Ecology in Agroecosystems, Universidad de Talca, Talca, Maule, Chile
- Instituto de Ciencias Biológicas, Universidad de Talca, Talca, Maule, Chile
| | - Felipe E. Pina-Castro
- Centre for Molecular and Functional Ecology in Agroecosystems, Universidad de Talca, Talca, Maule, Chile
- Instituto de Ciencias Biológicas, Universidad de Talca, Talca, Maule, Chile
| | - Christian C. Figueroa
- Centre for Molecular and Functional Ecology in Agroecosystems, Universidad de Talca, Talca, Maule, Chile
- Instituto de Ciencias Biológicas, Universidad de Talca, Talca, Maule, Chile
| | - Claudio C. Ramirez
- Centre for Molecular and Functional Ecology in Agroecosystems, Universidad de Talca, Talca, Maule, Chile
- Instituto de Ciencias Biológicas, Universidad de Talca, Talca, Maule, Chile
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Rameshgar F, Khajehali J, Nauen R, Bajda S, Jonckheere W, Dermauw W, Van Leeuwen T. Point mutations in the voltage-gated sodium channel gene associated with pyrethroid resistance in Iranian populations of the European red mite Panonychus ulmi. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2019; 157:80-87. [PMID: 31153480 DOI: 10.1016/j.pestbp.2019.03.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Revised: 03/05/2019] [Accepted: 03/13/2019] [Indexed: 06/09/2023]
Abstract
The European red mite Panonychus ulmi (Koch) is a major pest of apple trees worldwide and causes significant damage to apple orchards in Iran. Pyrethroid insecticides/acaricides, such as fenpropathrin and fenvalerate, are widely used to control P. ulmi, but their long-term use may lead to low efficacy. Earlier studies investigating pyrethroid resistance in closely related mites such as Tetranychus urticae revealed that pyrethroid resistance was associated with point mutations in the voltage-gated sodium channel gene (vgsc). The aim of this study was to investigate the biochemical and molecular mechanisms of fenpropathrin and fenvalerate resistance in Iranian populations of P. ulmi. Pyrethroid toxicity bioassays were carried out on different P. ulmi field populations. Marand (resistance ratio, RR = 149), Maraqeh (RR = 90) and Mianeh2 (RR = 71) populations exhibited high levels of resistance to fenpropathrin, compared to a susceptible field population (Shahin Dej). Resistance was also observed for fenvalerate with resistance ratio's ranging from 2- to 20-fold. Synergism experiments and enzyme activity assays predicted a minor role for classical detoxification enzymes. In contrast, two amino acid substitutions in the VGSC, L1024V and F1538I, that were previously shown to confer pyrethroid resistance, were detected in all three resistant P. ulmi populations and point towards target-site insensitivity as the most likely resistance mechanism. Furthermore, sequencing after cloning of vgsc fragments from single haploid males revealed the presence of multiple copies of vgsc in a highly resistant strain. The link between resistance mutations and vgsc copy number variation should be the subject of future study, as this might be used to develop molecular markers for monitoring pyrethroid resistance of P. ulmi in the field.
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Affiliation(s)
- Fariborz Rameshgar
- Department of Plant Protection, College of Agriculture, Isfahan University of Technology, Isfahan 84156-83111, Iran
| | - Jahangir Khajehali
- Department of Plant Protection, College of Agriculture, Isfahan University of Technology, Isfahan 84156-83111, Iran.
| | - Ralf Nauen
- Bayer AG, CropScience Division, R&D, Pest Control, Building 6260, Alfred Nobel Str. 50, D-40789 Monheim, Germany
| | - Sabina Bajda
- Laboratory of Agrozoology, Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Coupure links 653, 9000 Ghent, Belgium
| | - Wim Jonckheere
- Laboratory of Agrozoology, Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Coupure links 653, 9000 Ghent, Belgium
| | - Wannes Dermauw
- Laboratory of Agrozoology, Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Coupure links 653, 9000 Ghent, Belgium
| | - Thomas Van Leeuwen
- Laboratory of Agrozoology, Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Coupure links 653, 9000 Ghent, Belgium.
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Mao K, Zhang X, Ali E, Liao X, Jin R, Ren Z, Wan H, Li J. Characterization of nitenpyram resistance in Nilaparvata lugens (Stål). PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2019; 157:26-32. [PMID: 31153474 DOI: 10.1016/j.pestbp.2019.03.001] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Revised: 02/25/2019] [Accepted: 03/02/2019] [Indexed: 06/09/2023]
Abstract
Nitenpyram is very effective in controlling Nilaparvata lugens (brown planthopper, BPH), and its resistance has been reported in field populations; however, the resistance mechanism remains unclear. In the present study, cross-resistance and resistance mechanisms in nitenpyram-resistant BPH were investigated. A resistant strain (NR) with a high resistance level (164.18-fold) to nitenpyram was evolved through successive selection for 42 generations from a laboratory susceptible strain (NS). The bioassay results showed that the NR exhibited cross-resistance to imidacloprid (37.46-fold), thiamethoxam (71.66-fold), clothianidin (149.17-fold), dinotefuran (98.13-fold), sulfoxaflor (47.24-fold), cycloxaprid (9.33-fold), etofenprox (10.51-fold) and isoprocarb (9.97-fold) but not to triflumezopyrim, chlorpyrifos and buprofezin. The NR showed a 3.21-fold increase in cytochrome P450 monooxygenase (P450) activity compared to that in the NS, while resistance was also synergized (4.03-fold) with the inhibitor piperonyl butoxide (PBO), suggesting a role of P450. Furthermore, the mRNA expression levels of cytochrome P450 (CYP) genes by quantitative real-time PCR results indicated that twelve P450 genes were significantly overexpressed in the NR strain, especially CYP6ER1 (203.22-fold). RNA interference (RNAi) suppression of CYP6ER1 through injection of dsCYP6ER1 led to significant susceptibility in the NR strain. The current study expands our understanding of the nitenpyram resistance mechanism in N. lugens, provides an important reference for integrated pest management (IPM), and enriches the theoretical system of insect toxicology.
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Affiliation(s)
- Kaikai Mao
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Xiaolei Zhang
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Ehsan Ali
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Xun Liao
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Ruoheng Jin
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Zhijie Ren
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Hu Wan
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Jianhong Li
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China.
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Zhang BZ, Ma KS, Liu JJ, Lu LY, Chen XL, Zhang SP, Gao XW. Differential expression of genes in greenbug (Schizaphis graminum Rondani) treated by imidacloprid and RNA interference. PEST MANAGEMENT SCIENCE 2019; 75:1726-1733. [PMID: 30525307 DOI: 10.1002/ps.5293] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2018] [Revised: 11/21/2018] [Accepted: 12/01/2018] [Indexed: 06/09/2023]
Abstract
BACKGROUND Insecticides act as toxins, inhibitors of digestion and deterrents, and affect the expression of many genes in insects. To assess key genes associated with the detoxification or regulation of imidacloprid in greenbug, Schizaphis graminum (Rondani), the transcriptome and digital gene expression (DGE) profile were analyzed using Illumina sequencing. RESULTS In total, 48 763 494 clean reads were obtained by sequencing. Expression profile analysis showed that 2782 unigenes were differently expressed between the imidacloprid treatment and control groups. After exposure to imidacloprid, the expression levels of 1846 unigenes were upregulated and 936 were downregulated in comparison with controls. Expression patterns of the top 20 highly expressed genes show that they could be involved in the detoxification of imidacloprid. Silencing of multidrug resistance-associated gene (MRA), GATA-binding gene (GAT) and takeout-like precursor gene (TLP) resulted in increasing susceptibility to imidacloprid. CONCLUSIONS The differentially expressed genes in S. graminum have potential regulatory or detoxification roles in response to imidacloprid. These results should be useful in understanding the molecular mechanisms of greenbug adaption to imidacloprid. © 2018 Society of Chemical Industry.
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Affiliation(s)
- Bai-Zhong Zhang
- Department of Plant Protection, College of Resources and Environment, Henan Institute of Science and Technology, Xinxiang, Poeple's Republic of China
- Department of Entomology, China Agricultural University, Beijing, People's Republic of China
| | - Kang-Sheng Ma
- Department of Entomology, China Agricultural University, Beijing, People's Republic of China
| | - Jun-Jie Liu
- Department of Plant Protection, College of Resources and Environment, Henan Institute of Science and Technology, Xinxiang, Poeple's Republic of China
| | - Liu-Yang Lu
- Department of Plant Protection, College of Resources and Environment, Henan Institute of Science and Technology, Xinxiang, Poeple's Republic of China
| | - Xi-Ling Chen
- Department of Plant Protection, College of Resources and Environment, Henan Institute of Science and Technology, Xinxiang, Poeple's Republic of China
| | - Shou-Ping Zhang
- Department of Plant Protection, College of Resources and Environment, Henan Institute of Science and Technology, Xinxiang, Poeple's Republic of China
| | - Xi-Wu Gao
- Department of Entomology, China Agricultural University, Beijing, People's Republic of China
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Kang ZW, Liu FH, Pang RP, Tian HG, Liu TX. Effect of Sublethal Doses of Imidacloprid on the Biological Performance of Aphid Endoparasitoid Aphidius gifuensis (Hymenoptera: Aphidiidae) and Influence on Its Related Gene Expression. Front Physiol 2018; 9:1729. [PMID: 30618780 PMCID: PMC6297876 DOI: 10.3389/fphys.2018.01729] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Accepted: 11/16/2018] [Indexed: 12/28/2022] Open
Abstract
The integrated pest management (IPM) strategy was developed and used in combination with pesticides and beneficial biological control agents. To further develop IPM efficiency, it is important to evaluate the side effects of pesticides on biological control agents. Aphidius gifuensis is one of the most important aphid natural enemies and has been successfully used to control Myzys persicae and other aphid species. Imidacloprid (IMD) is a popular pesticide used worldwide and is highly toxic to non-target arthropods. Here, we investigated the short-term sublethal toxicity of IMD in Aphidius gifuensis and its impact on the biological performance and gene expression of this parasitoid. We found that sublethal IMD doses had a significant negative effect on the life history traits of female A. gifuensis, including shortening the lifespan and lowering parasitic capacity. Moreover, exposure to sublethal IMD also adversely affected the response of A. gifuensis to aphid-infested plant volatiles. Based on the transcriptome analysis, we found that the exposure to sublethal IMD doses significantly affected expression of genes involved in the central nervous system, energy metabolism, olfactory, and detoxification system of A. gifuensis. RT-qPCR also revealed that short term expose to sublethal IMD doses significantly induced the gene expression of genes related to the central nervous system (nAChRa7, nAChRa9, TbH, OAR1, NFR, TYR, and DAR1), olfactory system (OR28 and IR8a1), and detoxification system (CYP49p3, CYP6a2, and POD), while it suppressed the expression of genes involved in the central nervous system (nAChRa4 and nAChRb1), olfactory system (Orco1, IR8a2, and GR1), and detoxification system (GST2). Furthermore, exposure to sublethal doses of IMD also significantly increased the activities of CarEs and POD, whereas we observed no influence on the activities of CAT, GST, and SOD. Our results indicate that sublethal IMD doses might adversely affect the biological performance of A. gifuensis by altering gene expression related to the function of olfactory, nervous, energy metabolism, and detoxification systems. Thus, how the use of pesticides directly affect insect population should be considered when used in conjunction with natural pest parasitoids in IPM strategies.
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Affiliation(s)
- Zhi-Wei Kang
- State Key Laboratory of Crop Stress Biology for the Arid Areas, Key Laboratory of Northwest Loess Plateau Crop Pest Management of Ministry of Agriculture, Northwest A&F University, Yangling, China.,Department of Entomology, University of Georgia, Athens, GA, United States
| | - Fang-Hua Liu
- State Key Laboratory of Integrated Management of Pest and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Rui-Ping Pang
- State Key Laboratory of Crop Stress Biology for the Arid Areas, Key Laboratory of Northwest Loess Plateau Crop Pest Management of Ministry of Agriculture, Northwest A&F University, Yangling, China
| | - Hong-Gang Tian
- State Key Laboratory of Crop Stress Biology for the Arid Areas, Key Laboratory of Northwest Loess Plateau Crop Pest Management of Ministry of Agriculture, Northwest A&F University, Yangling, China
| | - Tong-Xian Liu
- State Key Laboratory of Crop Stress Biology for the Arid Areas, Key Laboratory of Northwest Loess Plateau Crop Pest Management of Ministry of Agriculture, Northwest A&F University, Yangling, China
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Sial MU, Zhao Z, Zhang L, Zhang Y, Mao L, Jiang H. Evaluation of Insecticides induced hormesis on the demographic parameters of Myzus persicae and expression changes of metabolic resistance detoxification genes. Sci Rep 2018; 8:16601. [PMID: 30413792 PMCID: PMC6226448 DOI: 10.1038/s41598-018-35076-1] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Accepted: 10/12/2018] [Indexed: 02/04/2023] Open
Abstract
Insecticide induced-hormesis is a bi-phasic phenomenon generally characterized by low-dose induction and high-dose inhibition. It has been linked to insect pest outbreaks and insecticide resistance, which have importance in the integrated pest management (IPM). In this paper, hormesis effects of four insecticides on demographic parameters and expression of genes associated with metabolic resistance were evaluated in a field collected population of the green peach aphid, Myzus persicae Sulzer. The bioassay results showed that imidacloprid was more toxic than acetamiprid, deltamethrin and lambda-cyhalothrin. After exposure to sublethal doses of acetamiprid and imidacloprid for four generations, significant prolonged nymphal duration and increased fecundity were observed. Subsequently, mean generation time (T) and gross reproductive rate (GRR) was significantly increased. Moreover, expression of CYP6CY3 gene associated with resistance to neonicotinoids was increased significantly compared to the control. For pyrethriods, across generation exposure to sublethal doses of lambda cyhalothrin and deltamethrin prolonged the immature development duration. However, the expression of E4 gene in M. persicase was decreased by deltamethrin exposure but increased by lambda cyhalothrin. Based on results, demographic fitness parameters were effected by hormetic dose and accompanied with detoxifying genes alteration, hence, which would be evaluated in developing optimized insect pest management strategies.
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Affiliation(s)
- Muhammad Umair Sial
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, P. R. China
| | - Zhenzhen Zhao
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, P. R. China
| | - Lan Zhang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, P. R. China.
| | - Yanning Zhang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, P. R. China
| | - Liangang Mao
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, P. R. China
| | - Hongyun Jiang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, P. R. China.
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Rana R, Dolma SK, Maurya SK, Reddy SGE. Insecticidal activity and structure–activity relationship of sugar embedded macrocycles for the control of aphid (Aphis craccivora Koch). TOXIN REV 2018. [DOI: 10.1080/15569543.2018.1498897] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Rohit Rana
- Natural Product Chemistry and Process Development Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur, India
- Academy of Scientific and Innovative Research, CSIR-Institute of Himalayan Bioresource Technology, Palampur, India
| | - Shudh Kirti Dolma
- Academy of Scientific and Innovative Research, CSIR-Institute of Himalayan Bioresource Technology, Palampur, India
- Entomology Laboratory, Agrotechnology of Medicinal, Aromatic and Commercial Important Plants Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur, India
| | - Sushil K. Maurya
- Natural Product Chemistry and Process Development Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur, India
- Academy of Scientific and Innovative Research, CSIR-Institute of Himalayan Bioresource Technology, Palampur, India
| | - S. G. Eswara Reddy
- Academy of Scientific and Innovative Research, CSIR-Institute of Himalayan Bioresource Technology, Palampur, India
- Entomology Laboratory, Agrotechnology of Medicinal, Aromatic and Commercial Important Plants Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur, India
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Wang K, Huang Y, Li X, Chen M. Functional Analysis of a Carboxylesterase Gene Associated With Isoprocarb and Cyhalothrin Resistance in Rhopalosiphum padi (L.). Front Physiol 2018; 9:992. [PMID: 30090072 PMCID: PMC6068260 DOI: 10.3389/fphys.2018.00992] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Accepted: 07/06/2018] [Indexed: 12/03/2022] Open
Abstract
Carboxylesterase (CarE) is an important class of detoxification enzymes involved in insecticide resistance. However, the molecular mechanism of CarE-mediated insecticide resistance in Rhopalosiphum padi, a problematic agricultural pest, remains largely unknown. In the present study, an isoprocarb-resistant (IS-R) strain and a cyhalothrin-resistant (CY-R) strain were successively selected from a susceptible (SS) strain of R. padi. The enzyme activity indicated that enhanced carboxylesterase activity contributes to isoprocarb and cyhalothrin resistance. The expression levels of putative CarE genes were examined and compared among IS-R, CY-R, and SS strains, and only the R. padi carboxylesterase gene (RpCarE) was significantly over expressed in both the IS-R and CY-R strains compared to the SS strain. The coding region of the RpCarE gene was cloned and expressed in Escherichia coli. The purified RpCarE protein was able to catalyze the model substrate, α-naphtyl acetate (Kcat = 5.50 s-1; Km = 42.98 μM). HPLC assay showed that the recombinant protein had hydrolase activity against isoprocarb and cyhalothrin. The modeling and docking analyses consistently indicated these two insecticide molecules fit snugly into the catalytic pocket of RpCarE. Taken together, these findings suggest that RpCarE plays an important role in metabolic resistance to carbamates and pyrethroids in R. padi.
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Affiliation(s)
- Kang Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Crop Pest Integrated Pest Management on the Loess Plateau of Ministry of Agriculture, Northwest A&F University, Yangling, China
| | - Yanna Huang
- State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Crop Pest Integrated Pest Management on the Loess Plateau of Ministry of Agriculture, Northwest A&F University, Yangling, China
| | - Xinyu Li
- State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Crop Pest Integrated Pest Management on the Loess Plateau of Ministry of Agriculture, Northwest A&F University, Yangling, China
| | - Maohua Chen
- State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Crop Pest Integrated Pest Management on the Loess Plateau of Ministry of Agriculture, Northwest A&F University, Yangling, China
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Balakrishnan B, Su S, Wang K, Tian R, Chen M. Identification, Expression, and Regulation of an Omega Class Glutathione S-transferase in Rhopalosiphum padi (L.) (Hemiptera: Aphididae) Under Insecticide Stress. Front Physiol 2018; 9:427. [PMID: 29731722 PMCID: PMC5920109 DOI: 10.3389/fphys.2018.00427] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Accepted: 04/05/2018] [Indexed: 01/01/2023] Open
Abstract
Glutathione S-transferases (GSTs) play an essential role in the detoxification of xenobiotic toxins in insects, including insecticides. However, few data are available for the bird cherry-oat aphid, Rhopalosiphum padi (L.). In this study, we cloned and sequenced the full-length cDNA of an omega GST gene (RpGSTO1) from R. padi, which contains 720 bp in length and encodes 239 amino acids. A phylogenetic analysis revealed that RpGSTO1 belongs to the omega class of insect GSTs. RpGSTO1 gene was highly expressed in transformed Escherichia coli and the protein was purified by affinity chromatography. The recombinant RpGSTO1 displayed reduced glutathione (GSH)-dependent conjugating activity toward the substrate 1-chloro-2, 4-dinitrobenzene (CDNB) substrate. The recombinant RpGSTO1 protein exhibited optimal activity at pH 7.0 and 30°C. In addition, a disk diffusion assay showed that E. coli overexpressing RpGSTO1 increased resistance to cumene hydroperoxide-induced oxidative stress. Real-time quantitative PCR analysis showed that the relative expression level of RpGSTO1 was different in response to different insecticides, suggesting that the enzyme could contribute to insecticide metabolism in R. padi. These findings indicate that RpGSTO1 may play a crucial role in counteracting oxidative stress and detoxifying the insecticides. The results of our study contribute to a better understanding the mechanisms of insecticide detoxification and resistance in R. padi.
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Affiliation(s)
- Balachandar Balakrishnan
- State Key Laboratory of Crop Stress Biology for Arid Areas and Key Laboratory of Crop Pest Integrated Pest Management on the Loess Plateau of Ministry of Agriculture, Northwest A&F University, Yangling, China
| | - Sha Su
- State Key Laboratory of Crop Stress Biology for Arid Areas and Key Laboratory of Crop Pest Integrated Pest Management on the Loess Plateau of Ministry of Agriculture, Northwest A&F University, Yangling, China
| | - Kang Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas and Key Laboratory of Crop Pest Integrated Pest Management on the Loess Plateau of Ministry of Agriculture, Northwest A&F University, Yangling, China
| | - Ruizheng Tian
- State Key Laboratory of Crop Stress Biology for Arid Areas and Key Laboratory of Crop Pest Integrated Pest Management on the Loess Plateau of Ministry of Agriculture, Northwest A&F University, Yangling, China
| | - Maohua Chen
- State Key Laboratory of Crop Stress Biology for Arid Areas and Key Laboratory of Crop Pest Integrated Pest Management on the Loess Plateau of Ministry of Agriculture, Northwest A&F University, Yangling, China
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