A5018231040- Insect and Pesticide Research
- Insect Resistance and Genetics
- Insect-Plant Interactions and Control
- Insect Pest Control Strategies
- Pesticide Residue Analysis and Safety
- Entomopathogenic Microorganisms in Pest Control
- Insect behavior and control techniques
- Construction Engineering and Safety
- Insect and Arachnid Ecology and Behavior
- Biotin and Related Studies
- Engineering Education and Curriculum Development
- Plant Virus Research Studies
- Design Education and Practice
- Nematode management and characterization studies
- Plant Pathogens and Fungal Diseases
- Insect Pheromone Research and Control
- Plant Physiology and Cultivation Studies
- Agricultural safety and regulations
- Plant and animal studies
Syngenta (Switzerland)
2011-2023
North East Surrey College of Technology
1989
Myzus persicae is a globally important aphid pest with history of developing resistance to insecticides. Unusually, neonicotinoids have remained highly effective as control agents despite nearly two decades steadily increasing use. In this study, clone M. collected from southern France was found, for the first time, exhibit sufficiently strong result in loss field effectiveness neonicotinoids. Bioassays, metabolism and gene expression studies implied presence mechanisms resistant clone, one...
The precise mode of action sulfoxaflor, a new nicotinic acetylcholine receptor-modulating insecticide, is unclear. A detailed understanding the action, especially in relation to neonicotinoids, essential for recommending effective pest management practices.Radiolabel binding experiments using tritiated analogue sulfoxaflor ([(3) H]-methyl-SFX) performed on membranes from Myzus persicae demonstrate that interacts specifically with high-affinity imidacloprid site present subpopulation total...
Abstract BACKGROUND: Although cross‐resistance between compounds in the same insecticide group is a frequently observed phenomenon, groups that differ structural and functional characteristics can be extremely unpredictable. In case of controlling whitefly, Bemisia tabaci Gennadius, neonicotinoids pyridine azomethine antifeedant pymetrozine represent independent lines discovery should suited for alternation to avoid prolonged selection resistance mechanism. Reports an association responses...
Abstract BACKGROUND: Pollen beetle ( Meligethes spp.) is a major pest of European oilseed rape crops. Its resistance to pyrethroid insecticides has been recorded in samples beetles collected Europe since at least 1999, and problems with the control field have widely reported. In 2007, Beetle Working Group was formed through Insecticide Resistance Action Committee (IRAC) order coordinate efforts for surveying development. RESULTS: The results first 3 years pollen susceptibility survey using...
The grain aphid, Sitobion avenae Fabricius (Hemiptera: Aphididae), is an important pest of cereal crops. Pesticides are the main method for control but carry risk selecting resistance. In response to reports reduced efficacy pyrethroid sprays applied S. avenae, field samples were collected and screened mutations in voltage-gated sodium channel, primary target site pyrethroids. Aphid mobility mortality lambda-cyhalothrin measured coated glass vial bioassays.A single amino acid substitution...
Abstract BACKGROUND: Parthenogenetic clones of the green peach aphid, Myzus persicae (Sulzer), and cotton Aphis gossypii Glover, were tested with anthranilic diamide insecticide cyantraniliprole (i.e. DuPont ™ Cyazypyr ) in systemic‐uptake bioassays to investigate potential for cross‐resistance conferred by mechanisms resistance organophosphates, carbamates pyrethroids and, case M. , reduced sensitivity neonicotinoids. These data compared response field samples A. collected from around...
The nicotinic acetylcholine receptor (nAChR) is a ligand-gated ion channel composed of 5 protein subunits arranged around central cation selective pore. Several classes natural and synthetic insecticides mediate their effect through interacting at nAChRs. This review examines the basic pharmacology neonicotinoids related chemistry, with an emphasis on sap-feeding insects from order Hemiptera, principle pest target for such insecticides. Although subunit stoichiometry endogenous invertebrate...
Abstract BACKGROUND: The neonicotinoid class of insecticides is a key component pest management strategies used by stone fruit producers in Europe. Neonicotinoids are currently one the most important tools for control peach‐potato aphid ( Myzus persicae ). Overreliance on neonicotinoids has led to development resistance through combination metabolic and target‐site mechanisms individual aphids. A monitoring project was conducted Syngenta 2010 determine status M. populations collected from...
Abstract Background The glasshouse whitefly, Trialeurodes vaporariorum , is a damaging crop pest and an invasive generalist capable of feeding on broad range host plants. As such this species has evolved mechanisms to circumvent the wide spectrum anti-herbivore allelochemicals produced by its range. T. also demonstrated remarkable ability evolve resistance many synthetic insecticides used for control. Results To gain insight into molecular that underpin polyphagy natural xenobiotics, we...
The tobacco whitefly, Bemisia tabaci, is a polyphagous crop pest which causes high levels of economic damage across the globe. Insecticides are often required for effective control this species, among neonicotinoid class have been particularly widely used. Deciphering mechanisms responsible resistance to these chemicals therefore critical maintain B. tabaci and limit it causes. An important mechanism neonicotinoids in overexpression cytochrome P450 gene CYP6CM1 leads enhanced detoxification...
The diamondback moth, Plutella xylostella, is a damaging pest of cruciferous crops, and has evolved resistance to many the insecticides used for control, including members diamide class. Previous work on molecular basis diamides documented mutations in target-site, ryanodine receptor, resistant populations P. xylostella worldwide. In contrast role metabolic this insecticide class significantly less clear. Here we show that overexpression flavin-dependent monooxgenase (FMO) confers...
Plutella xylostella (L.) is a destructive pest of cruciferous crops worldwide that has evolved resistance to many insecticides. Here we examined the mode inheritance, cross-resistance profile, and potential mechanisms emamectin benzoate in field-derived strain P. from Japan.
Preventing a pest population from damaging an agricultural crop and, at the same time, preventing development of pesticide resistance is major challenge in protection. Understanding how farming practices and environmental factors interact with characteristics to influence spread difficult complex task. It extremely challenging investigate such interactions experimentally realistic spatial temporal scales. Mathematical modelling computer simulation have, therefore, been used analyse evolution...
Abstract BACKGROUND: Myzus persicae is a globally important aphid pest that mainly controlled through the application of chemical insecticides. Recently, clone M. exhibiting control‐compromising levels resistance to neonicotinoid insecticides was described. The this associated with reduced affinity imidacloprid for target site (the nicotinic acetylcholine receptor) as result mutation key amino acid residue (R81T) in loop D region nAChR β1 subunit. potent conferred by mechanism are cause...
Abstract BACKGROUND: Pollen beetle ( Meligethes aeneus F.) has become the most important pest of oilseed rape in Europe, but its control been greatly hindered by pyrethroid resistance. Target‐site resistance implicated previously, and, whilst synergism found with piperonyl butoxide (PBO), exact nature metabolic remained unknown. The use PBO, conjunction analogue EN 16/5‐1, allowed characterisation RESULTS: In vitro assays combination vivo studies using PBO and 16/5‐1 showed that high...
BACKGROUND The peach potato aphid Myzus persicae is a major agricultural pest capable of transmitting over 100 plant viruses to wide range crops. Control relies largely upon treatment with neonicotinoid insecticides such as thiamethoxam (TMX). In 2009, strain denoted FRC, which exhibits between 255- and 1679-fold resistance current neonicotinoids previously linked metabolic target site resistance, was discovered in France. Dispersal behaviour may potentially further enhance the this strain....