Agricultural Microbiology – Page 3

Plant Pathogenic Fungi Special Issue: Genetics and Genomics

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This scientific review discusses how modern genetics and genomics tools are helping researchers better understand and manage plant diseases caused by fungi. Seven research studies are presented covering topics like identifying different fungal species, understanding how fungi attack plants, and finding natural alternatives to chemical fungicides. The research emphasizes the importance of monitoring fungal diseases and developing crops that resist infection to protect global food production.

Flood Inoculation of Fusarium eumartii in Tomato Seedlings: Method for Evaluating the Infectivity of Pathogen Spores

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Scientists have developed a simple laboratory method to test how effectively a fungus called Fusarium eumartii infects young tomato plants. The technique involves growing tomato seedlings on special nutrient plates and then exposing them to fungal spores suspended in water, allowing researchers to measure how much damage occurs and how much fungus remains in the plant tissue. This method can be used to quickly test whether different compounds, like chitosan, can prevent fungal infections or help plants defend themselves naturally. The straightforward approach makes it useful for farmers and researchers developing better ways to protect tomato crops from fungal diseases.

Upregulation of ACC deaminase gene in Bacillus velezensis UTB96 improved yield and shelf Life of Agaricus bisporus

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Researchers discovered that adding a beneficial bacteria called Bacillus velezensis UTB96 to mushroom growing substrates significantly improves both the amount of mushrooms produced and how long they stay fresh. When this bacteria was grown in a medium containing calcium chloride, it produced more of an enzyme called ACC deaminase that breaks down ethylene, a gas that causes mushrooms to age and brown. Mushrooms treated with this specially-prepared bacteria stayed fresher for three weeks in the refrigerator with minimal browning, and overall mushroom yield increased by up to 23%.

Bacillus subtilis ED24 Controls Fusarium culmorum in Wheat Through Bioactive Metabolite Secretion and Modulation of Rhizosphere Microbiome

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A beneficial bacteria called Bacillus subtilis ED24 was found to effectively protect wheat plants from a destructive fungal disease called Fusarium culmorum. When applied to wheat seeds, this bacteria improved seed germination and plant growth better than a commercial chemical fungicide, while also promoting helpful microorganisms in the soil around the plant roots. The bacteria works by producing special chemical compounds that kill the harmful fungus and by enriching the soil microbiome with beneficial organisms.

The Antimicrobial Extract Derived from Pseudomonas sp. HP-1 for Inhibition of Aspergillus flavus Growth and Prolongation of Maize Seed Storage

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Researchers discovered that a beneficial bacterium called Pseudomonas sp. HP-1 can produce a natural compound that effectively prevents mold contamination in stored maize seeds. The extract from this bacterium showed strong antifungal activity against Aspergillus flavus, a major cause of aflatoxin contamination in grain storage. The main protective compound was identified as phenazinecarboxylic acid, which works by damaging the cell membranes of fungal cells. This finding offers a promising eco-friendly alternative to synthetic chemical fungicides for protecting stored crops.

Phosphorus-solubilizing fungi improve growth and P nutrition in sorghum at variable salinity levels

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Researchers discovered special salt-loving fungi that can help crops absorb more phosphorus even in salty soils. These fungi produce organic acids and other compounds that unlock phosphorus trapped in soil, making it available for plants. When sorghum seeds were treated with these fungi, the plants grew better and absorbed more phosphorus, even under high salinity conditions. This discovery offers a sustainable way to improve crop production in salt-affected soils without relying heavily on chemical fertilizers.

Isolation and characterization of a new Leptobacillium species promoting tomato plant growth

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Researchers discovered a new beneficial fungus called Leptobacillium that lives inside tomato plant roots without causing harm. When tomato seeds were treated with this fungus, the plants grew better, had more chlorophyll in their leaves, and produced tastier fruits with higher levels of lycopene, a beneficial compound in tomatoes. This discovery suggests the fungus could be used to improve tomato crop production naturally, reducing the need for chemical inputs and helping plants cope with heat stress.

Bacillus subtilis Strain TCX1 Isolated from Ambrosia artemisiifolia: Enhancing Cucumber Growth and Biocontrol Against Cucumber Fusarium Wilt

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Scientists discovered a beneficial bacterium called Bacillus subtilis strain TCX1 that can protect cucumber plants from a devastating fungal disease called Fusarium wilt. This bacterium both kills the fungus directly through special compounds it produces and strengthens the plant’s natural immune system. Additionally, the bacterium helps cucumber plants grow better by producing growth hormones and improving nutrient absorption, making it a promising natural solution for farmers.

Bacillus velezensis CNPMS-22 as biocontrol agent of pathogenic fungi and plant growth promoter

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This research demonstrates that a beneficial bacterium called Bacillus velezensis CNPMS-22 can effectively protect maize plants from fungal diseases caused by Fusarium verticillioides. When used to treat seeds before planting, this bacterium reduced disease symptoms and increased crop yield to levels comparable with chemical fungicides. The bacteria produces natural compounds that kill harmful fungi and promote plant growth, offering a safer and more sustainable alternative to chemical pesticides.

Citric acid impairs type B trichothecene biosynthesis of Fusarium graminearum but enhances its growth and pigment biosynthesis: transcriptomic and proteomic analyses

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Citric acid, a compound found in plant roots, has an interesting dual effect on a dangerous fungus called Fusarium graminearum that destroys grain crops worldwide. While citric acid helps the fungus grow better, it actually prevents the fungus from producing dangerous toxins called trichothecenes. This finding suggests that citric acid could potentially be used in farming to reduce the harmful toxins that contaminate wheat and corn while maintaining reasonable fungal control.

Research Topic: Agricultural Microbiology