fungal pathogenicity – Page 3

Effect of Rare, Locally Isolated Entomopathogenic Fungi on the Survival of Bactrocera oleae Pupae in Laboratory Soil Conditions

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Researchers tested seventeen types of fungi as natural pest control for the olive fruit fly, a major pest that damages olive crops in Greece. They found that several fungal species, especially Aspergillus flavus and Aspergillus contaminans, were highly effective at killing fly pupae in soil conditions. These fungi could offer farmers an eco-friendly alternative to toxic chemical pesticides, helping improve olive oil quality while protecting beneficial insects.

Transformation of Alternaria dauci demonstrates the involvement of two polyketide synthase genes in aldaulactone production and fungal pathogenicity

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A fungus that causes leaf spots on carrots produces a toxic chemical that helps it infect plants. Scientists identified two genes responsible for making this toxin and used genetic engineering to create mutant fungi unable to produce it. When these mutant fungi tried to infect carrot plants, they were much less damaging than the normal fungus, proving the toxin is crucial for the fungus to cause disease.

The small GTPases FoRab5, FoRab7, and FoRab8 regulate vesicle transport to modulate vegetative development and pathogenicity in Fusarium oxysporum f. sp. conglutinans

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Researchers studied three important protein switches (Rab GTPases) in a fungus that causes cabbage wilt disease. By deleting these proteins one at a time, they found that each plays a critical role in fungal growth, spore production, and the ability to infect plants. The findings suggest that targeting these proteins could be a strategy to control the devastating cabbage wilt disease.

The Last of Them: Entomopathogenic Effect of Akanthomyces muscarius on the Scale Insect Pest Toumeyella parvicornis Under Laboratory Conditions, a Potential Biological Control Candidate

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Scientists discovered that a fungus called Akanthomyces muscarius can effectively kill tortoise scale insects, an invasive pest damaging European stone pine trees. In laboratory tests, this fungus infected and killed nearly all treated insects within a week, outperforming commercial fungal products. These findings suggest this natural fungus could be used as an eco-friendly alternative to chemical pesticides for controlling this destructive pest in urban and natural environments.

A rapid and efficient in vivo inoculation method for introducing tree stem canker pathogens onto leaves: suitable for large-scale assessment of resistance in poplar breeding progeny

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Scientists developed a faster and easier way to test whether poplar trees are resistant to diseases caused by stem canker fungi. Instead of using time-consuming traditional methods that require large stem pieces, the new method uses poplar leaves for testing. The leaf method produces results in 5 days, uses abundant leaf materials, and the results match those from traditional stem testing methods.

Exploring fungal pathogens to control the plant invasive Rubus niveus on Galapagos Island San Cristobal

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Scientists in the Galapagos Islands are working to control an invasive raspberry plant (Rubus niveus) that has taken over about 30,000 hectares and is damaging native species. Rather than using costly manual removal or herbicides, researchers isolated and tested five different fungi found naturally on diseased raspberry plants to see if they could be used as biological control agents. These five fungi—including species like Colletotrichum and Fusarium—showed promise by causing leaf damage to the raspberry plant, offering hope for a more sustainable pest management solution.

Argonaute1-Dependent LtmilR2 Negatively Regulated Infection of Lasiodiplodia theobromae by Targeting a Guanine Nucleotide Exchange Factor in RAS Signalling

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Scientists discovered a tiny regulatory RNA molecule called LtmilR2 in a fungus that causes grape disease. This molecule naturally suppresses the fungus’s ability to cause infection by shutting down a gene called LtRASGEF. When researchers delivered LtmilR2 using specially designed nanoparticles, it successfully stopped the fungus from growing. This discovery could lead to a new type of biological fungicide for protecting grapes and vineyards.

Ventilator-associated pneumonia caused by a new-found opportunistic fungal pathogen—Myceliophthora heterothallica: a case report

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A 67-year-old woman suffered cardiac arrest and required a breathing machine to survive. While on the ventilator, doctors discovered an unusual fungal infection in her lungs caused by Myceliophthora heterothallica, which had never been documented as a human pathogen before. With standard bacterial antibiotics and supportive care, the patient recovered and was discharged after four weeks, suggesting this fungus may be less dangerous than related species.

Global Analysis of microRNA-like RNAs Reveals Differential Regulation of Pathogenicity and Development in Fusarium oxysporum HS2 Causing Apple Replant Disease

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Apple replant disease is caused by a fungus that damages apple tree roots and reduces fruit production. Researchers discovered that this fungus uses special regulatory molecules called microRNA-like RNAs to control its growth and disease-causing abilities, especially during the spore stage. These findings could help scientists develop new ways to control the disease using RNA-based treatments.

Isolation, Identification, Biological Characterization, and Pathogenicity of Entomopathogenic Fungus from the Larvae of the Evergestis extimalis (Scopoli) (Lepidoptera: Pyralidae)

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Scientists discovered a fungus called Mucor hiemalis that naturally infects and kills a harmful rapeseed pest known as Evergestis extimalis. They identified the fungus, found the best conditions for growing it in the lab, and tested how well it kills the pest larvae at different life stages. The results show this fungus could be used as a natural, environment-friendly alternative to chemical pesticides for protecting rapeseed crops.

Research Keyword: fungal pathogenicity