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Daily News Blog

Archive for the 'Fungal Resistance' Category


22
Nov

Fungi that Survive Fungicide Use Multiply and Thrive

(Beyond Pesticides, November 22, 2022) Fungus that survive a fungicide application may be able to multiply and thrive, putting plant yields at risk. This finding comes from research recently published by scientists at University of Illinois, focusing on the impact of fungicide use on soybean yields and the disease Septoria brown spot, caused by the fungus Septoria glycines. The research underlines the danger of preventive chemical applications in an attempt to protect yield and shows how precarious pesticide use can be when subject to the complexity seen in field conditions. Scientists began with the intent of analyzing the soybean’s phyllosphere mycobiome, the fungal microbial make-up of the outside of the plant, including all its surfaces above-ground. A field trial was established near Urbana, Illinois, and soybeans plants were separated into four different plots according to their treatment. One group was inoculated with Septoria glycines, another inoculated and sprayed with a fungicide, a third not inoculated yet sprayed with a fungicide, and a final control group neither inoculated nor treated with a fungicide. A range of different analyses were conducted to view changes in the disease development and mycobiome composition over time. Soybean plants that had been inoculated with Septoria showed […]

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06
Apr

Conventional Apples Found to Be Coated in Fungicides and Drug-Resistant Fungi

(Beyond Pesticides, April 6, 2022) Conventional apples sold at market and sprayed with synthetic fungicides may not only contain drug-resistant fungi, but function as a transmission reservoir and route to spread these dangerous pathogens, finds research published in mBio late last month by a team of researchers from India and Canada. As reports of fungal resistance rise, particularly in hospitals and among the immunocompromised, there is an urgent need to understand and address the root causes of these emerging disease threats. “When we look at human pathogens, we tend to look at what’s immediate to us,” said study coauthor Jianping Xu, PhD. “But we have to look at it more broadly. Everything is connected, the whole system. Fruit is just 1 example.”   Researchers set out their research with the suspicion that stored fruits sprayed with synthetic fungicides were acting as a source and route of transmission for the deadly fungi Candida auris. This yeast is considered an “emerging fungal pathogen” by the U.S. Centers for Disease Control and Prevention (CDC), and has increased its rate of infection significantly since its initial identification in the mid 1990s. The fungi has been found in every continent save Antarctica. It has proven to […]

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28
Feb

Deadly Public Health Threat from Antifungal and Antibiotic Resistance Ignored by EPA

(Beyond Pesticides, February 28, 2022) When bacteria and fungi become resistant to pesticides, it is a signal that the toxic chemical approach to controlling pathogens does not work. But resistance also poses a direct threat to human health when the pesticide (or a related chemical) is used in human medicine. Tell EPA to cancel all uses of a pesticide when resistance is discovered or predicted to occur. Tell Congress to ensure that EPA protects public health from deadly antifungal and antibiotic resistance. The threat of resistance in bacterial human pathogens has long been widely recognized. Although research sponsored by the Environmental Protection Agency (EPA) recognizes the spread of resistance to antibiotics important in human medicine through horizontal gene transfer in the environment, EPA inaction both on antibiotic and antifungal resistance has become a growing crisis. EPA does recognize the existence of resistance to fungicides. It uses codes produced by the Fungicide Resistance Action Committee in decisions regarding fungicide registration. Although EPA says resistance “may be considered in the risk-benefit decision-making process,” there is no evidence that the agency actually considers the failure of EPA-registered pesticides to control the target organisms in registering pesticides. That failure has a serious impact on […]

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