molecular identification – Page 12

Disseminated Lichtheimia ramosa infection in a Japanese Black calf

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A young beef calf developed severe diarrhea and fever that did not respond to multiple antibiotics. The calf had an underdeveloped immune system (missing thymus gland) and was treated with many antibiotics and steroids, which weakened its immune system further. After death, examination revealed the calf had a widespread fungal infection caused by Lichtheimia ramosa in the liver and digestive tract, representing the first documented case of this type in Japanese Black cattle.

Biocontrol Potential of Bacillus velezensis RS65 Against Phytophthora infestans: A Sustainable Strategy for Managing Tomato Late Blight

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Researchers tested 30 soil bacteria from tomato roots to find natural disease fighters. They discovered that Bacillus velezensis RS65, a beneficial bacterium, effectively prevents tomato late blight by producing enzymes and toxins that kill the fungal pathogen. In greenhouse tests, plants treated with RS65 had half the disease severity compared to untreated plants, suggesting this bacteria could replace chemical fungicides in sustainable tomato farming.

The frequency distribution of Aspergillus section Nigri from clinical and environmental samples in Iran

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Researchers studied black mold species (Aspergillus section Nigri) found in hospitals and the environment across Iran. They identified eight different species and found that certain types like A. welwitschiae were more common in ear infections while A. tubingensis was more prevalent in soil and air. These findings are important because some of these molds cause serious infections in humans and understanding where they live helps doctors predict and treat infections.

Optimal liquid-based DNA preservation for DNA barcoding of field-collected fungal specimens

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This research compares two liquid preservation solutions for storing fungal samples collected in the field. RNAlater and DESS both work well for preserving fungal DNA, but RNAlater performs better when samples are dried before DNA extraction. The study helps researchers choose the best method for preserving and studying wild fungi in natural ecosystems.

Caspofungin therapy in prosthetic valve endocarditis and candidemia due to itraconazole-resistant Candida glabrata (Nakaseomyces glabratus): A case report

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A 13-year-old boy developed a serious fungal infection of his heart valve after receiving an artificial valve replacement. The initial antibiotic (itraconazole) did not work because the fungus became resistant, likely by forming a protective biofilm. After identifying the resistant fungus through specialized testing, doctors switched to a different medication called caspofungin. The patient fully recovered with this new treatment and remained healthy during follow-up, showing that combination of precise identification and targeted treatment can overcome antibiotic resistance.

Molecular Identification, Mycelial Growth Kinetics, and Antimicrobial Potential of Newly Isolated Medicinal Mushroom Fomitopsis pinicola from Bulgaria

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Scientists isolated and studied a medicinal mushroom called Fomitopsis pinicola from Bulgaria. They confirmed its identity using DNA analysis and tested how well it grows on different nutrient media. The mushroom showed strong antimicrobial effects against disease-causing bacteria, especially when extracted with water, making it a promising candidate for developing new antibiotics to fight antibiotic-resistant infections.

Four New or Newly Recorded Species from Freshwater Habitats in Jiangxi Province, China

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Scientists surveying freshwater streams in Jiangxi Province, China discovered four fungal species new to the region. Three of these species had never been described before, while one was recorded in China for the first time. Using both microscope observations and DNA analysis, researchers confirmed these findings and classified them within the fungal families Pleurotheciaceae and Pseudodactylariaceae. These discoveries demonstrate how much fungal diversity still remains undiscovered in freshwater ecosystems.

Morphological and molecular identification of endophytic fungi from roots of epiphyte orchid Aerides odorata Lour in Sabah

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Scientists studied fungi living inside the roots of a rare fragrant orchid called Aerides odorata. Using advanced microscopy and DNA analysis, they identified seven different types of fungi that help the orchid absorb nutrients and grow. These fungi form special structures called pelotons inside the plant’s root cells. This research helps scientists understand how to better grow and protect endangered orchids.

Consecutive non-Aspergillus Fungal Invasive Infections in Chronic Granulomatous Disease: Data from the French National Reference Center for Primary ImmunoDeficiencies and literature review

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This study examines rare but serious fungal infections in patients with chronic granulomatous disease, a genetic immune disorder. Researchers analyzed 122 cases of non-Aspergillus fungal infections from French hospitals and published literature, finding that these infections often occur despite preventive antifungal medications and are challenging to diagnose. The infections were found in the lungs most commonly but could spread to bones, brain, and other organs, with treatments including antifungal drugs, surgery, and in some cases bone marrow transplants.

Disseminated Lichtheimia ramosa infection in a Japanese Black calf

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A young calf developed a serious fungal infection caused by Lichtheimia ramosa despite treatment with multiple antibiotics. The calf had an underdeveloped thymus gland, making it vulnerable to infections. The fungus spread throughout the calf’s body, affecting the liver and digestive system. This case highlights how prolonged antibiotic use and weakened immunity can allow dangerous fungi to flourish.

Research Keyword: molecular identification