Research Keyword: Pathogenic fungi

Disseminated subcutaneous sporotrichosis in an immunocompetent patient: A case report and a systematic literature review

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A 74-year-old man developed painful red masses on his arm and hand after being stuck by a tree branch. Tests identified the infection was caused by a fungus called Sporothrix schenckii. Despite having a normal immune system, the infection had spread across his arm in an unusual pattern. Treatment with an antifungal medication called itraconazole completely healed the lesions within four months without any scarring.

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

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Cacao farmers have struggled to control witches’ broom disease, a fungal infection caused by Moniliophthora perniciosa, because the fungus survives even high doses of strobilurin fungicides. This study reveals how the fungus adapts to the fungicide by switching its metabolism to use alternative energy sources, activating detoxification systems, and using an alternative respiratory pathway. Researchers also discovered that prolonged fungicide exposure can create even more resistant mutants with mutations in genes that control fungal growth and gene expression.

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Infection caused by a cryptic fungal species, Blastomyces gilchristii, in a tiger

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A tiger at a veterinary hospital developed a serious fungal infection that affected its brain and lungs. Using advanced DNA sequencing technology, researchers identified the infection was caused by a previously unrecognized fungal species called Blastomyces gilchristii. This discovery was important because it showed that this dangerous fungus exists in areas where scientists previously thought it wasn’t found, and it highlights the importance of using modern genetic testing to identify unusual infections.

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The protein kinases family in fungi: adaptability, virulence and conservation between species

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Protein kinases are cellular ‘switches’ that help fungi survive harsh conditions by regulating how cells make proteins and adapt to stress. A particularly important kinase called GCN2 acts as a sensor that detects when fungi lack amino acids, triggering a survival response that helps the fungus adapt and maintain pathogenicity. This review shows how understanding GCN2 could help scientists develop new antifungal drugs to treat fungal infections.

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Elucidation of Mechanism of Soil Degradation Caused by Continuous Cropping of Dictyophora rubrovalvata Using Metagenomic and Metabolomic Technologies

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When farmers grow Dictyophora rubrovalvata mushrooms in the same soil repeatedly, the soil becomes degraded and mushroom production fails. Scientists found that repeated cultivation changes the soil’s microbe populations, reducing beneficial bacteria while increasing harmful fungi, and toxic compounds accumulate that further damage mushroom growth. By understanding these mechanisms through DNA sequencing and chemical analysis, better strategies can be developed to maintain healthy soil for sustainable mushroom farming.

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Contamination of fungal genomes of Onygenaceae (Phylum Ascomycota) in public databases: incidence, detection, and impact

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Scientists found that many fungal genome sequences stored in public databases contain unwanted bacterial DNA that can interfere with research results. They developed a method to identify and remove this contamination using related high-quality fungal genomes as reference. After cleaning four contaminated genomes, the quality improved significantly and the contamination dropped from 5-12% to below 3%, demonstrating that careful screening is essential for reliable genetic research.

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Epidemiology of mucormycosis in COVID-19 patients in northwest Iran: Rhizopus arrhizus as the predominant species

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This study found that COVID-19 patients in northwestern Iran who received high-dose steroid treatment developed serious fungal infections called mucormycosis. The infection was caused primarily by a fungus called Rhizopus arrhizus and affected mainly the sinuses and brain. The steroids used to treat COVID-19 weakened patients’ immune systems and triggered diabetes, both of which made them vulnerable to this dangerous fungal infection.

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