Articles tagged with Insecticide Resistance
University of Illinois researchers discovered waterhemp's unique mechanism to detoxify the herbicide SA3, adding complexity to controlling this weed. This finding raises concerns about the potential for waterhemp to resist new herbicides before they are even commercialized.
Researchers have developed a way to bottle the 'smell of fear' produced by predators to repel and disrupt destructive insects. The odor blend can be used in essential oil diffusers to spread over time across gardens or fields, offering a natural alternative to pesticides.
West Virginia University researchers are working on a project to create a tomato that requires little to no pesticides. They aim to identify pest-resistant genes and make those new varieties available to breeders and farmers. The goal is to develop an environmentally friendly and sustainable crop that reduces pesticide use.
A new study found that yellow fever mosquitoes have distinct genetic changes behind permethrin resistance, including mutations in VGSC and cuticle protein genes. These mutations enable the mosquitoes to survive exposure to the pesticide, posing a significant threat to disease control.
A team of scientists led by the University of Göttingen has discovered a connection between a specific gene and plant resistance to pathogens. The study found that plants lacking this gene accumulate active acids, but show increased resistance - at the cost of reduced growth.
Researchers at University of Missouri developed genetically modified mosquitoes resistant to Zika virus using CRISPR gene-editing technology. These 'suicide mosquitos' cannot transmit the disease and can interrupt the disease cycle, making them a potential solution for controlling the spread of Zika virus.
Scientists at TU Graz have identified a bacterium inside the seed of rice plants that can lead to complete resistance to a particular pathogen. The bacterium, Sphingomonas melonis, produces an organic acid that inhibits the pathogen and renders it harmless.
Scientists explore why some plants resist certain pathogens while others are susceptible. Recent advances in technology will aid in understanding the molecular basis of nonhost resistance, enabling improved disease control strategies.
A study by University of Vermont researchers reveals that Colorado potato beetles develop resistance to pesticides through epigenetic changes, which can be passed on to descendants across at least two generations. These changes allow the beetles to rapidly adapt to new pesticides without requiring genetic mutations.
A collaborative effort involving genetically engineered cotton and mass releases of sterile pink bollworm moths has successfully eliminated the invasive pest from cotton-producing areas of the US and Mexico. This strategy saved U.S. cotton growers $192 million from 2014 to 2019.
Researchers evaluated 14 experimental bermudagrasses for resistance to fall armyworm damage, identifying a few promising genotypes that are comparable to the industry standard 'TifTuf'. These new genotypes may offer an alternative to environmentally unsound insecticides and help reduce turfgrass damage.
A study developed a new crystal structure of deltamethrin that kills mosquitoes 12 times faster than the original form. This could lead to more effective malaria control even in areas with high insecticide resistance.
A study finds that crop rotation effectively mitigates western corn rootworm damage to Bt cornfields, increasing yields and reducing fertilizer use. Farmers must diversify their Bt crops and rotate to prevent the pest's resistance.
A recent study mapped mosquito insecticide resistance patterns across Africa, finding dramatic increases in resistance to five mainstream insecticides between 2005 and 2017. This surge in resistance poses a significant threat to malaria control efforts, particularly in Sub-Saharan Africa where over half of all cases occur.
A new project led by Kaitlin Gold aims to develop management strategies for grape downy mildew fungicide resistance in New York state. The team will test non-CAA fungicides and create extension materials for grape growers to mitigate the issue of emerging resistance.
An international team of scientists has identified candidate resistance genes that could protect ash trees from the EAB, a deadly pest expected to kill billions of trees. Researchers sequenced the genomes of 22 species of ash tree and found 53 candidate resistance genes involved in making chemicals harmful to insects.
Researchers developed a new pinto bean variety, TARS-LH1, with increased resistance to leafhoppers and drought tolerance. The new crop has broad adaptation to different climates and could contribute to reducing pesticide use in common bean farming.
Researchers from McGill University found that widespread use of Roundup herbicide can trigger loss of biodiversity in freshwater ecosystems, making them more vulnerable to pollution and climate change. The study discovered that some ecosystems adapt by evolving resistance to the herbicide, but this comes at a cost of plankton diversity.
Exposure to pesticide atrazine alters wasps' gut microbiome, conferring resistance that is inherited across successive generations. The altered microbiome also increases tolerance to other pesticides like glyphosate.
Researchers at Liverpool School of Tropical Medicine identified a new mechanism by which mosquitoes become resistant to insecticides. The SAP2 binding protein in the legs plays a key role in this process.
The UK is losing 0.82 million tonnes of wheat yield each year due to herbicide-resistant black-grass, with potential implications for national food security. Researchers estimate that the worst-case scenario could result in an annual cost of £1 billion and a wheat yield loss of 3.4 million tonnes per year.
Researchers have characterized three genes associated with insecticide resistance in malaria mosquitoes, found to cause resistance to all four classes of public health insecticides. This breakthrough work provides much-needed tools for monitoring the growing problem through molecular testing.
Researchers have designed a new bednet that can kill mosquitoes more efficiently than existing nets, minimizing risk to people inside the net. The Barrier Bednet, with an extra panel of netting above the roof, was highly effective against insecticide-resistant mosquitoes in Burkina Faso.
Researchers found that children sleeping under bed nets treated with a new compound had significantly lower malaria parasite rates, and fewer mosquitoes carrying the disease. The results suggest that these nets could be a valuable stopgap measure while new insecticides are developed.
A new breeding method uses genetic profiles to predict disease resistance in beans, speeding up the process and reducing pesticide use. The method has been applied to 316 varieties of beans and shows promise for increasing crop yields and improving food security in Africa and Latin America.
Copy-number variants (CNVs) play a crucial role in the development of insecticide resistance in malaria mosquitoes. The study found that CNVs were more likely to occur in genes associated with detoxification, suggesting a rapid evolutionary response to insecticides.
Researchers at Carnegie Mellon University's Institute for Green Science unveiled a new field of sustainable chemistry using bioinspired oxidation catalysts. The catalysts, called NewTAMLs, can eliminate pharmaceutical micropollutants from water in under five minutes and have major cost savings over current water treatment techniques.
A new study investigates the use of multiple fungal biopesticides to prevent uniform evolutionary response and promote sustainable control. The project aims to make agricultural landscapes more diverse, allowing for longer-term use of biopesticides without consistent resistance evolution.
Agricultural pesticide fludioxonil kills fungi by delivering a metabolic shock through the formation of reactive stress molecules, which triggers a biochemical cascade leading to cell death. The researchers discovered that fludioxonil produces methylglyoxal, a highly reactive chemical, which activates the lethal HHK cascade.
Researchers have pinpointed a single genetic alteration that confers resistance to pyrethroid insecticides in malaria-transmitting mosquitoes. The study provides a molecular diagnostic tool for detecting metabolic resistance and informs efforts to understand its spread across Africa.
Researchers have developed a method to use atovaquone-coated mosquito bed nets to cure mosquitoes and prevent malaria spread. The treatment could be more effective and less harmful than current methods.
Researchers found that treating bed nets with atovaquone can effectively reduce malaria transmission and mitigate insecticide resistance. The study showed that mosquitoes were completely blocked from developing Plasmodium falciparum, the parasite that causes malaria.
Researchers have developed a new method called AgRenSeq, which enables the rapid recruitment of disease resistance genes from wild plants and their transfer into domestic crops. This technique has been successfully trialed in a wild relative of wheat and holds promise for protecting multiple crops worldwide.
A study published in Nature Communications has uncovered additional mechanisms of insecticide resistance in mosquitoes, which had not been previously recognized. The research used a bioinformatics approach to integrate data from multiple studies and identified new gene families and pathways involved in resistance.
A study in Scientific Reports identifies mechanisms of pesticide resistance in cattle ticks, which contribute to significant economic losses. The study reveals that the ticks' ability to detoxify toxicants, including ivermectin, is a key factor in their resistance.
Researchers have published the first estimates of antibiotic and pesticide planetary boundaries, revealing that Gram-negative bacteria are already beyond these limits. The study emphasizes the urgent need for new approaches to manage resistance, including promoting susceptibility to pesticides and antibiotics.
Researchers identified a dominantly inherited mutation that makes cotton bollworms resistant to genetically engineered cotton. The study's findings suggest that this dominant gene is spreading rapidly and may soon threaten cotton production in China.
Researchers found high levels of fungicide resistance in dollar spot isolates from golf courses, ranging from 41-85% compared to resistant-free samples. The study suggests that fine-tuning fungicide programs can help reduce the need for repeated applications and save golf courses money.
Researchers have discovered genetic landmarks associated with soybean aphid resistance in thousands of varieties, paving the way for developing new resistant varieties. This breakthrough could provide an alternative to insecticides, reducing environmental issues and crop losses.
A new type of bed net showed a 12% reduction in clinical malaria cases compared to conventional nets, and children sleeping under it were 52% less likely to be anaemic. The study also found a 51% reduction in risk of malaria-infective mosquito bites.
A large-scale study is proposed to test the efficacy of strategies for preventing pesticide resistance in critical weed and insect species. The authors recommend providing resources for landscape-level studies and incentives for farmers to participate, highlighting the need for a multi-faceted approach to addressing this pressing issue.
A Texas A&M AgriLife Research study shows that commercially available resistant sorghum varieties provide adequate protection against the sugarcane aphid. The study also found that beneficial predators are readily attracted to aphid-infested sorghum, improving biological control of aphids.
A study has found that the rapid evolution of resistance to pyrethroid-based indoor residual sprays on Bioko Island, Equatorial Guinea, is driven by metabolic changes in Anopheles gambiae mosquitoes. The enzyme CYP9K1 plays a key role in this process.
A study published in Malaria Journal found that ambient temperature impacts the toxicity of commonly used insecticides against malaria vectors. The researchers explored the effect of temperature on pyrethroid and carbamate insecticides, revealing that temperature affects their efficacy differently for resistant and susceptible strains.
A randomized controlled trial found that a new bed net coated with piperonyl butoxide (PBO) and pyrethroid insecticide reduced malaria prevalence in children by 44%, compared to standard nets, over one year. The WHO recommends increasing coverage of PBO bed nets in areas where resistance to pyrethroids is developing.
A two-year trial showed that a long-lasting insecticidal net treated with piperonyl butoxide reduced malaria prevalence by 44% and 33% compared to standard nets. The study also demonstrated unprecedented control through indoor residual spraying, reducing infection by 48%. WHO has revised its recommendations for the use of these novel n...
A new hybrid mega-pest has been confirmed in Brazil, combining the cotton bollworm and corn earworm to create a super-pest with unlimited geographical boundaries. The hybrid's emergence poses significant concerns for global food security due to its high resistance to pesticides and widespread damage to crops.
Researchers from the University of Sheffield have identified key drivers of herbicide resistance in crops, including higher volumes of herbicide use. The study found that farms using more herbicides had greater resistance, highlighting the need for diversifying management techniques to reduce evolution of resistance.
A UCR study reveals how intensive pesticide use is driving mosquito evolution at the genetic level, boosting resistance to insecticides. The findings highlight the need for new strategies to overcome pesticide-resistant mosquitoes and control malaria.
Researchers have identified regions of the genome contributing to resistance against western corn rootworm, with ascorbate biosynthesis and nematode-attracting compounds implicated in the process. The study's findings offer hope for developing native resistance mechanisms into elite hybrids without using transgenics.
A study of over 7,500 children in Sudan found that indoor nonpyrethroid insecticide spraying was more effective at reducing malaria incidence than pyrethroid spraying. The increased cost of using nonpyrethroid insecticides is relatively low, suggesting that resistance to pyrethroids may be driving the switch.
The largest genetic study of mosquitoes reveals that insecticide resistance is spreading rapidly across Africa, posing a significant threat to malaria control. The study found that wild mosquitoes are genetically diverse and can evolve resistance quickly, making it challenging to control the disease.
Scientists at Michigan State University have discovered a key to designing more selective pesticides that target pests without killing beneficial insects like bees. By understanding the molecular differences between mammals and insects, they hope to create new chemicals that spare bees while effectively controlling agricultural pests.
Researchers found that scab-resistant apple cultivars, such as GoldRush and CrimsonCrisp, retain their quality and nutritional value after storage, rivaling traditional varieties like Golden Delicious. The new apples also show promise for long-term storage using 1-MCP gas.
Scientists have engineered cowpea to produce a Bacillus thuringiensis protein that protects against the Maruca pod borer. The resulting Bt cowpea variety can yield up to 25% more than traditional varieties, making it an attractive option for smallholder farmers in Africa.
Researchers at Umea University have discovered a plant protein that limits aphid feeding behavior, resulting in reduced sap ingestion and fewer offspring on resistant plants. The protein is thought to occlude the narrow food canal of the aphid, providing a new avenue for developing more sustainable crop resistance.
Scientists have identified over 17,000 protein coding genes in the genomes of two closely related megapests, providing a detailed understanding of their genetics and potential weaknesses. This information could lead to the development of new pest management strategies and reduce control costs by billions of dollars annually.
The World Health Organization (WHO) has recommended BASF's Interceptor(R) G2, a long-lasting insecticide-treated mosquito net containing chlorfenapyr, for malaria prevention. The new product is the first to be approved from a new chemical class since the 1980s and offers a promising solution to combat malaria resistance.
Researchers from Instituto Gulbenkian de Ciencia discovered that two genes from baker's yeast can increase plant resistance to a broad range of toxic substances, enabling their growth in contaminated soils. Plants carrying the yeast genes grew significantly better than wild-type plants in contaminated soils.
A recent study by Emory University highlights the importance of insecticide-resistance monitoring in controlling the spread of Zika and other mosquito-borne diseases. The research found that applying insecticides like deltamethrin in areas with high resistance can be ineffective, emphasizing the need for targeted control measures.