plant pathology – Page 12

Transcription Factor PFB1 Is Required for the Botrytis cinerea Effector BcSCR1-Mediated Pathogenesis

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Researchers discovered how a fungal disease (grey mould) spreads by identifying a toxic protein it produces that disables a plant’s defense system. The fungal protein BcSCR1 sneaks into plant cells and targets a control switch called PFB1 that normally turns on genes protecting plants from infection. By blocking this control switch, the fungus weakens the plant’s immune defenses and establishes infection more easily.

The complete mitochondrial genome of the banana pathogen Fusarium oxysporum f. sp. cubense M5

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Researchers have completed the full genetic map of the mitochondria (energy-producing structures) of a fungus that causes a serious disease in banana plants. The study identified all the genes in this mitochondrial genome and discovered special structures called introns within two genes. This genetic information could help scientists develop better ways to detect and identify this harmful banana pathogen.

Mycobiome of low maintenance iconic landscape plant boxwood under repeated treatments of contact and systemic fungicides

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This study examined how different fungicide treatments affect the beneficial and harmful fungi living on boxwood plants. Researchers found that repeated applications of chlorothalonil-based fungicides reduced many beneficial fungi while having minimal effect on harmful pathogens, and that fungi became less sensitive to the same fungicide over time. The findings suggest that choosing the right fungicide and application method is important for maintaining plant health and preventing fungicide resistance.

Chemical profile and bioactivity of essential oils from five Turkish thyme species against white mold fungal disease agent Sclerotinia sclerotiorum

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Researchers studied five types of Turkish thyme plants to see if their essential oils could fight a harmful fungus called Sclerotinia sclerotiorum that damages crops like cucumbers and sunflowers. They found that thyme oils, especially those rich in carvacrol and thymol, were very effective at stopping fungal growth. These natural plant oils could be used as safer alternatives to chemical fungicides in farming, reducing environmental damage while controlling plant diseases.

Accessory Chromosome Contributes to Virulence of Banana Infecting Fusarium oxysporum Tropical Race 4

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Scientists studied a dangerous fungal disease that destroys banana crops by examining a special extra chromosome found in the pathogen Fusarium oxysporum Tropical Race 4. They created mutant fungi without this chromosome and found that while the mutants could still grow normally in the lab, they became much less dangerous to banana plants. This discovery shows that this particular chromosome contains genes that help the fungus attack and infect bananas, suggesting potential new ways to combat this devastating crop disease.

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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Researchers discovered that citric acid, a natural acid found in plant roots and commonly used in agriculture, can reduce the production of dangerous mycotoxins called trichothecenes that contaminate wheat and corn crops. While citric acid surprisingly boosts the fungus’s growth and changes its color, it simultaneously shuts down the genes responsible for producing these toxic compounds. This discovery could help farmers use citric acid more strategically to prevent Fusarium head blight, a devastating crop disease, though care must be taken since it also promotes fungal growth.

Morphology and phylogeny reveal two new species of pestalotioid fungi associated with hawthorn in Northeast China

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Researchers discovered two previously unknown fungal species living on hawthorn trees in Northeast China. Through detailed microscopic examination and genetic analysis, they identified these as Sporocadus changchunensis and S. crataegicola. Testing showed these fungi can cause disease spots on hawthorn leaves, suggesting they may pose risks to hawthorn crops. This finding helps expand our understanding of fungal species and their role in plant health.

Identification of Trichoderma spp., Their Biomanagement Against Fusarium proliferatum, and Growth Promotion of Zea mays

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Researchers isolated and tested special fungi called Trichoderma that can fight crop disease-causing fungi and promote plant growth. When applied to maize plants infected with disease-causing Fusarium, the Trichoderma fungi completely eliminated the disease and made the plants grow healthier and larger. This natural approach offers farmers a chemical-free alternative to protect crops while improving plant health.

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.

Unveiling molecular mechanisms of strobilurin resistance in the cacao pathogen Moniliophthora perniciosa

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This research reveals how a fungus that causes disease in cacao plants survives treatment with strobilurin fungicides, which are commonly used in agriculture. Scientists discovered that the fungus adapts by reorganizing its metabolism to compensate for the drug’s effects, activating detoxification systems, and in some cases, developing genetic mutations that enhance resistance. Understanding these survival mechanisms could help develop better strategies to control this economically important crop disease.

Research Topic: plant pathology