biocontrol – Page 9

Volatile Semiochemicals Emitted by Beauveria bassiana Modulate Larval Feeding Behavior and Food Choice Preference in Spodoptera frugiperda (Lepidoptera: Noctuidae)

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Researchers discovered that a beneficial fungus called Beauveria bassiana produces odorous chemicals that can discourage pest insects from eating crops. When certain strains of this fungus release their characteristic smell (particularly a compound called 3-methylbutanol), larvae of the fall armyworm pest eat less and avoid treated plants. Interestingly, the plants themselves respond by producing defensive compounds when exposed to these fungal odors. This finding suggests a new approach to pest control that harnesses the natural chemical communication between fungi, plants, and insects.

2-Nonanol produced by Bacillus velezensis EM-1: a new biocontrol agent against tobacco brown spot

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Researchers discovered that a beneficial bacterium called Bacillus velezensis produces a natural compound called 2-nonanol that effectively kills the fungus causing brown spots on tobacco leaves. This compound works by disrupting the fungus’s ability to obtain energy and handle stress. Testing on tobacco leaves showed that 2-nonanol could significantly reduce disease development. This discovery offers a promising environmentally-friendly alternative to chemical fungicides for protecting tobacco crops.

Integrated use of biochar, Cassia fistula, and Trichoderma for sustainable management of Sclerotium rolfsii in chickpea

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This study shows how combining three natural substances—rice husk biochar (a carbon-rich soil additive), Cassia fistula plant extract, and a beneficial fungus called Trichoderma harzianum—can effectively protect chickpea crops from a harmful soil disease called collar rot. The combination not only reduced disease occurrence from 64% to 35% but also improved plant growth and strengthened plants’ natural defense mechanisms. This eco-friendly approach offers farmers a sustainable alternative to chemical fungicides while improving soil health and crop productivity.

Complete genome analysis and antimicrobial mechanism of Bacillus velezensis GX0002980 reveals its biocontrol potential against mango anthracnose disease

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Researchers discovered a beneficial bacterium called Bacillus velezensis that can prevent mango rot caused by a destructive fungus. This bacterium produces natural antimicrobial compounds that kill the disease-causing fungus without the need for harmful chemical pesticides. When applied to mangoes, it reduced disease by 52% and extended the fruits’ shelf life, offering a safe and environmentally friendly solution for protecting mangoes after harvest.

Biocontrol of Seedborne Fungi on Small-Grained Cereals Using Bacillus halotolerans Strain B33

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Researchers tested a naturally occurring soil bacterium called Bacillus halotolerans strain B33 to protect cereal seeds from harmful fungi. When seeds infected with fungal pathogens were treated with this bacterium, it successfully eliminated 83-100% of the fungi, depending on the pathogen and crop type. The treatment was as effective as commercial chemical disinfectants but offers a more environmentally friendly alternative for sustainable farming.

Inhibition of RNase to Attenuate Fungal-Manipulated Rhizosphere Microbiome and Diseases

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Fusarium fungi cause devastating crop diseases by producing a protein called Fg12 that acts like a molecular weapon to kill beneficial bacteria in the soil around plant roots. Scientists discovered that a simple compound called GMP can block this fungal weapon, preventing the pathogen from suppressing protective bacteria. By treating seeds or soil with GMP, farmers can significantly reduce root rot in soybeans and alfalfa while promoting plant growth.

Analysis of the correlation between the distribution of microorganisms carried by Coix seed and fungal toxins, and the biological control of aflatoxin

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Coix seeds are popular in traditional Chinese medicine and food, but they can become contaminated with harmful fungi that produce toxins called mycotoxins. This study examined which fungi grow in Coix seeds from different regions and found that certain bacteria called Bacillus can effectively prevent dangerous mold from growing and producing toxins. By using these beneficial bacteria, producers can keep Coix seeds safer for people to consume as medicine or food.

Isolation and identification of antagonistic fungi for biocontrol of Impatiens hawkeri leaf spot disease and their growth-promoting potential

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Researchers discovered a beneficial fungus called Fusarium solani that prevents leaf spot disease in ornamental Impatiens hawkeri plants. This fungus not only fights the disease-causing pathogen but also promotes seed germination and plant growth. The findings suggest this fungus could replace harmful chemical pesticides while simultaneously acting as a natural fertilizer, benefiting both plant health and the environment.

Abscisic Acid Metabolizing Rhodococcus sp. Counteracts Phytopathogenic Effects of Abscisic Acid Producing Botrytis sp. on Sunflower Seedlings

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Scientists discovered that a beneficial soil bacterium can protect sunflower plants from a harmful fungus by eating the toxin the fungus produces. The fungus normally weakens plant defenses by producing a chemical called abscisic acid, but the bacterium metabolizes this chemical and prevents it from harming the plant. This approach works without the bacterium directly killing the fungus, offering a new way to protect crops from disease.

Antagonistic potential and analytical profiling of plant probiotic bacteria using chromatography and mass spectrometry techniques against Botrytis cinerea and Fusarium oxysporum

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Researchers discovered that certain beneficial bacteria can fight plant diseases caused by harmful fungi. Two bacteria strains showed exceptional ability to inhibit the growth of disease-causing fungi that damage crops. These bacteria produce natural compounds like phenols and organic acids that help plants grow better and resist diseases. This research suggests these bacteria could be used as natural alternatives to chemical pesticides for sustainable farming.

Research Topic: biocontrol