Mycology – Page 29

Study on Pathogenesis of Cytospora pyri in Korla Fragrant Pear Trees (Pyrus sinkiangensis)

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Researchers identified Cytospora pyri as the fungus causing a serious canker disease in Korla fragrant pear trees grown in Xinjiang, China. The fungus cannot directly infect healthy bark but requires wounds to enter trees, then spreads rapidly through tissues using powerful cell-degrading enzymes. Understanding these infection mechanisms can help farmers prevent the disease by protecting trees from injuries and maintaining tree health.

Deep Fungal Infection of the Skin with Two Rare Fungi in a Dog Being Treated with Immunosuppressant Therapy: A Case Report

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An 8-year-old dog receiving long-term immunosuppressive medication for brain inflammation developed rare fungal skin infections caused by two unusual fungi not previously reported together in veterinary medicine. Diagnosis required multiple tests including tissue samples, staining techniques, and genetic testing. Despite treatment with antifungal medications and careful adjustment of immunosuppressive drugs, the infections did not improve, highlighting the difficult balance between fighting infections and controlling the underlying immune disease.

Deep learning application to hyphae and spores identification in fungal fluorescence images

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Researchers developed an artificial intelligence system that can automatically identify fungal infections in microscope images as accurately as experienced doctors. The system uses two different AI models working together to spot fungal spores, thread-like hyphae, and mycelium in fluorescence images. This technology could significantly reduce the time doctors spend analyzing samples and help ensure more accurate diagnoses, especially in hospitals with fewer experienced specialists.

MoMad2 With a Conserved Function in the Spindle Assembly Checkpoint Is Required for Maintaining Appressorial Turgor Pressure and Pathogenicity of Rice Blast Fungus

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Rice blast fungus causes significant crop damage worldwide. This research reveals that a protein called MoMad2 helps the fungus control its cell division timing and maintains pressure in specialized infection structures called appressoria, which are needed to penetrate rice leaves. When scientists removed the MoMad2 gene, the fungus became less effective at infecting rice plants, suggesting this protein could be a target for developing new disease control strategies.

Trachemys scripta Eggs as Part of a Potential In Vivo Model for Studying Sea Turtle Egg Fusariosis

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Sea turtles around the world face a serious threat from a fungal disease called fusariosis that destroys their eggs before they hatch. Scientists wanted to study how this fungus causes disease, but working with endangered sea turtles in tropical regions is difficult and heavily regulated. They discovered they could use eggs from red-eared slider turtles, an invasive species, as a substitute model to understand how the fungus infects eggs. The research showed that the fungus is highly virulent and modifies the acidity of egg surfaces to help it grow, providing valuable insights that could help protect endangered sea turtles.

Successful management of Lomentospora prolificans septic arthritis and osteomyelitis in an immunocompetent child: A case report

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A 3-year-old healthy child developed a serious fungal bone and joint infection in the elbow after surgery to repair a broken arm bone. The fungus, called Lomentospora prolificans, is extremely resistant to most medications and can lead to limb amputation. Doctors saved the child’s arm by combining multiple approaches: repeated surgeries to clean out infected tissue, three different antifungal medications taken together, special antibiotic-loaded bone cement placed in the elbow, and antiseptic wound washing. After six months of treatment, the infection was cured and the child could use their arm again.

Rhino-orbital-cerebral mucormycosis in diabetic ketoacidosis: A classic clinical presentation still unknown in Senegal

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A young woman in Senegal with uncontrolled diabetes developed a serious fungal infection affecting her eye and brain caused by Rhizopus oryzae. Despite showing classic warning signs like swelling and tissue death, the infection was not diagnosed quickly enough, and the necessary antifungal medication (amphotericin B) was not available, resulting in her death within three days. This case highlights how invasive fungal infections are underrecognized and undertreated in Africa due to limited laboratory capacity and drug availability.

Stonebrood Disease—Histomorphological Changes in Honey Bee Larvae (Apis mellifera) Experimentally Infected with Aspergillus flavus

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Researchers studied how a rare fungal disease called stonebrood affects honey bee larvae by infecting them with the fungus Aspergillus flavus. They found that the fungus establishes in the bee’s gut within 24 hours and kills the larvae within two days, likely through production of toxic compounds. The study reveals three stages of infection progression and highlights why beekeepers need protection when handling infected colonies.

A carnivorous mushroom paralyzes and kills nematodes via a volatile ketone

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Scientists discovered that oyster mushrooms kill parasitic worms using a toxic gas stored in tiny bulb-shaped structures called toxocysts. The toxin is a common chemical called 3-octanone that ruptures the worms’ cell membranes, causing calcium to flood into cells and leading to rapid paralysis and death. This ‘nerve gas in a lollipop’ strategy could inspire new ways to control parasitic worms in agriculture and medicine.

Co-transformation of Aspergillus fumigatus: a simple and efficient strategy for gene editing without linking selectable markers

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Scientists have developed a new technique for editing genes in a dangerous fungal pathogen called Aspergillus fumigatus. Instead of permanently attaching antibiotic resistance markers to the target genes (which can interfere with normal gene function), they use a clever strategy of introducing two different DNA pieces simultaneously. One piece makes the desired gene edit while the second introduces a resistance marker to a completely different location in the genome. This approach is simple, inexpensive, and works about 11% of the time, making it practical for identifying successfully edited strains.

Research Topic: Mycology