Agricultural Biotechnology – Page 3

Hass Avocado (Persea americana Mill) Peel Extract Reveals Antimicrobial and Antioxidant Properties against Verticillium theobromae, Colletotrichum musae, and Aspergillus niger Pathogens Affecting Musa acuminata Colla Species, in Ecuador

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Researchers tested whether avocado peel waste could help protect banana crops from fungal diseases. They extracted beneficial compounds from avocado peels and tested them against three harmful fungi that affect bananas. The results showed the extract worked best against one type of fungus and had good antioxidant properties, suggesting avocado peel could be a natural and sustainable way to protect banana crops.

Interference with sexual mating of Sporisorium scitamineum by verrucarin A isolated from Paramyrothecium sp

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Scientists discovered that a naturally occurring fungus called Paramyrothecium sp. produces a compound called verrucarin A that prevents sugarcane smut disease. This compound works by stopping the mating process between fungal spores, preventing the disease from developing without harming the sugarcane plant. Greenhouse experiments showed that using this natural compound reduced disease occurrence from 80% to just 37%, offering a safe and eco-friendly alternative to chemical pesticides for protecting sugarcane crops.

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

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Researchers discovered that a bacterium called Bacillus halotolerans strain B33 can effectively prevent harmful fungi from damaging cereal seeds like wheat, barley, oats, and rye. When seeds were treated with this beneficial bacterium, it successfully eliminated or greatly reduced three dangerous fungal pathogens while also helping the seeds germinate better. This natural approach offers a promising environmentally-friendly alternative to chemical fungicides for protecting grain crops.

In vitro and in vivo inhibitory effects and transcriptional reactions of graphene oxide on Verticillium dahliae

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Scientists discovered that graphene oxide, a nanomaterial, can effectively kill or inhibit the growth of Verticillium dahliae, a harmful fungus that causes wilt disease in cotton and other crops. The graphene oxide works by damaging the fungus’s cell membranes and disrupting its ability to grow and spread. When applied to cotton plants infected with this fungus, graphene oxide treatment reduced disease symptoms and prevented the fungus from multiplying. This research suggests graphene oxide could become a valuable alternative to chemical fungicides for controlling this destructive plant disease.

Biocontrol of Cercospora leaf spot in sugar beet by a novel Bacillus velezensis KT27 strain: Enhanced antifungal activity and growth promotion in laboratory and field conditions

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This research demonstrates that a beneficial bacteria called Bacillus velezensis KT27 can effectively control a common fungal disease in sugar beet crops. The bacteria fights the disease by producing natural antifungal compounds and can be further enhanced by exposure to inactivated fungal pathogens. Field trials showed the bacterial treatment provided disease protection almost as good as chemical fungicides while also promoting plant growth and increasing sugar beet yield by up to 15%.

Xenorhabdus spp.: An Overview of the Useful Facets of Mutualistic Bacteria of Entomopathogenic Nematodes

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Xenorhabdus bacteria are tiny organisms that naturally live inside microscopic worms used for pest control. These bacteria produce powerful substances that can kill harmful insects, fungi, and plant-damaging worms without using toxic chemical pesticides. Scientists are discovering new types of these bacteria and their compounds, which could help create safer products for farming and disease control. This research shows these beneficial microbes could replace harmful chemicals in agriculture.

Interference with sexual mating of Sporisorium scitamineum by verrucarin A isolated from Paramyrothecium sp

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Scientists discovered a fungus called Paramyrothecium that produces a natural compound called verrucarin A, which stops sugarcane smut disease by preventing infected fungus cells from mating with each other. In greenhouse experiments, using this compound reduced disease symptoms from 80% infection down to 37%, and it didn’t harm the sugarcane plants. This provides a safe, natural way to control an important crop disease without using chemical pesticides.

Antifungal mechanism of nanosilver biosynthesized with Trichoderma longibrachiatum and its potential to control muskmelon Fusarium wilt

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Researchers created tiny silver particles using a beneficial fungus to fight a serious disease that damages muskmelon plants. At low doses, these silver nanoparticles killed the disease-causing fungus while actually helping the melon plants grow better and germinate faster. The silver particles work by damaging the fungus’s cell structure and triggering harmful reactive oxygen species inside fungal cells, ultimately destroying them.

Microbiome Analysis Reveals Biocontrol of Aspergillus and Mycotoxin Mitigation in Maize by the Growth-Promoting Fungal Endophyte Colletotrichum tofieldiae Ct0861

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Researchers discovered that a beneficial fungal endophyte called Colletotrichum tofieldiae can protect maize crops from contamination by harmful Aspergillus fungi that produce dangerous toxins called aflatoxins. When maize plants were treated with this endophyte either through seed coating or leaf spraying, they grew better and produced higher yields while also experiencing a dramatic 90% reduction in fungal contamination and extremely low aflatoxin levels. The protection mechanism appears to work indirectly by boosting the plant’s own defense systems rather than through direct combat with the pathogenic fungus, offering a sustainable and safe solution for improving crop quality and food safety.

Draft genome sequence of Leptobacillium coffeanum (Cordycipitaceae, Hypocreales), a freshwater fungus isolated from Bohol, Philippines

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Scientists in the Philippines have sequenced the complete genetic code of a freshwater fungus called Leptobacillium coffeanum, which was found in forest streams in Bohol. This fungus belongs to a family of fungi that can help control pests and produce useful compounds for agriculture and medicine. The complete genetic information is now available to researchers worldwide for studying how this fungus works and finding new ways to use it for practical applications.

Research Topic: Agricultural Biotechnology