DNA sequencing – Page 2

Taxonomy and Phylogeny of Cystolepiota (Agaricaceae, Agaricales): New Species, New Combinations and Notes on the C. seminuda Complex

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Researchers studied tiny mushrooms in the genus Cystolepiota using DNA analysis and microscopy to better understand their relationships and identify new species. They discovered that what was thought to be a single species called C. seminuda was actually multiple different species. They also found that another group of mushrooms called Pulverolepiota was distinct enough to deserve its own genus rather than being classified with Cystolepiota. This work clarifies the true diversity and proper classification of these diminutive fungi found worldwide.

Paratracheal abscess by plant fungus Chondrostereum purpureum- first case report of human infection

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A plant scientist in India developed an unusual infection caused by a fungus that normally only affects plants. The infection formed an abscess near his windpipe and caused voice problems and difficulty swallowing. Doctors couldn’t identify the fungus using standard methods, requiring DNA testing to confirm it was Chondrostereum purpureum, a fungus known to cause silver leaf disease in roses and other plants. The patient recovered completely after surgery to drain the abscess and antifungal medication for two months.

Morphological and phylogenetic analyses reveal two new species of Tubeufia (Tubeufiales, Tubeufiaceae) from freshwater habitats in China

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Scientists have discovered two previously unknown fungal species in freshwater streams in Hainan Province, China. These fungi, named Tubeufia yanuodaensis and Tubeufia yinggelingensis, belong to a group called helicosporous hyphomycetes that break down decaying wood in water. The researchers identified these new species by comparing their DNA sequences and physical characteristics with existing known species.

First human case of Eidernor doerrieniae colonization in a peritoneal dialysis catheter: A warning from silent contamination

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A 52-year-old man on peritoneal dialysis noticed brownish particles in his dialysis catheter. Doctors identified the particles as a rare fungus called Eidernor doerrieniae, which had never been found in humans before. Although the patient had no symptoms, doctors immediately removed the catheter and treated him with antifungal medications, which successfully cured the infection. This case shows why patients and doctors should take visible particles in dialysis catheters seriously, even when there are no obvious signs of infection.

Trichosporon Urinary Tract Infections: A Hidden Menace Revealed

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Trichosporon is a fungus that causes urinary tract infections primarily in hospitalized patients and those with weakened immune systems. This review found that Trichosporon asahii is the most common species responsible for these infections, especially in patients with prolonged hospital stays or using immunosuppressive medications. The drug voriconazole works best against this fungus, while some common antifungal medications like amphotericin B are less effective. Accurate identification using modern laboratory techniques is crucial for proper treatment.

A case of Blastomyces helicus pneumonia in a dog from a non-endemic region: diagnostic challenges and successful treatment outcome

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A dog developed severe pneumonia from an emerging fungal infection called Blastomyces helicus after traveling to Utah and Idaho. Initial blood tests incorrectly suggested a different fungus, but laboratory culture and genetic testing identified the true culprit. The dog was successfully treated with an antifungal medication called itraconazole and made a complete recovery with careful monitoring over 6 months.

A Case of Allergic Bronchopulmonary Mycosis Caused by Cordyceps farinosa, a Species of Caterpillar Fungi

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A woman developed a serious respiratory condition called allergic bronchopulmonary mycosis caused by Cordyceps farinosa, a fungus that normally infects insect larvae. She worked in a laboratory breeding mice in a mountainous area and developed persistent cough and congestion. Doctors identified the fungus using DNA testing and treated her by removing the fungal material from her airways and removing her from the workplace, which led to complete recovery.

A New Species and Five New Records of Talaromyces (Eurotiales, Aspergillaceae) Belonging to Section Talaromyces in Korea

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Researchers surveying fungal diversity in Korea discovered one new species of Talaromyces fungus and confirmed five additional species previously unknown to the country. These fungi were isolated from soil, freshwater, and indoor air samples and identified using genetic analysis and visual characteristics. Many species in this fungal genus produce valuable compounds with potential medical and agricultural applications, making them important for biotechnology research.

Research Keyword: DNA sequencing