fungal pathogenesis – Page 13

The transcription factor RttA contributes to sterol regulation and azole resistance in Aspergillus fumigatus

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Researchers corrected the mislabeled rttA gene in the dangerous fungus Aspergillus fumigatus and discovered it acts as a master control switch for sterol production and antifungal drug resistance. When this gene is active, it helps fungi survive azole medications by boosting production of ergosterol, a critical component of fungal cell membranes. This discovery reveals how fungi develop resistance to our frontline antifungal treatments and suggests new ways to combat these life-threatening infections.

A broadly conserved fungal chorismate mutase targets the plant shikimate pathway to regulate salicylic acid production and other secondary metabolites

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Fungal pathogens produce proteins called effectors that help them infect plants. This study discovered that a fungus called Sclerotinia sclerotiorum produces an effector that enters plant cells and travels to chloroplasts. Unlike similar effectors in other fungi, this protein increases the production of salicylic acid, a plant defense hormone, while reducing other protective compounds. This creates conditions favorable for the fungus to establish infection.

The Gcn5 lysine acetyltransferase mediates cell wall remodeling, antifungal drug resistance, and virulence of Candida auris

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Candida auris is a dangerous fungal infection that resists many standard antifungal drugs. Researchers discovered that a protein called Gcn5 helps this fungus survive both drugs and the body’s immune system. By targeting Gcn5 with a new compound called CPTH2, scientists showed they could make the fungus more vulnerable to standard treatments like caspofungin, suggesting a promising new approach to fighting these infections.

Improving treatment of chromoblastomycosis: the potential of COP1T-HA and antimicrobial photodynamic therapy against Fonsecaea monophora in vitro

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Chromoblastomycosis is a stubborn skin fungal infection that is difficult to treat with current medications and often comes back after treatment. Researchers tested a new treatment using a special light-activated compound called COP1T-HA combined with blue light, which successfully killed the fungus in laboratory tests. The treatment worked quickly and at low doses, showing promise as a potential new therapy for this challenging infection.

Things you wanted to know about fungal extracellular vesicles (but were afraid to ask)

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Fungal extracellular vesicles (EVs) are tiny packages released by fungal cells that play important roles in fungal infections and how our immune system responds to them. Scientists have confirmed these EVs are real biological structures, not laboratory artifacts, and discovered they are produced by many different fungal species. Interestingly, these EVs can have opposite effects on the immune system depending on the fungus involved—sometimes helping our bodies fight infection and sometimes making infections worse, making them both potential vaccines and virulence factors.

Breaking down the wall: Solid-state NMR illuminates how fungi build and remodel diverse cell walls

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Scientists have developed a new technique called solid-state NMR that can examine fungal cell walls without damaging them, revealing how these structures are built and reorganized. This research shows that different fungi have different wall architectures made of sugar-like molecules including chitin and various glucans, and that fungi can quickly adapt their walls when exposed to antifungal drugs. These findings could help develop better antifungal treatments by targeting the specific structural features that different fungi rely on for survival.

Integrated multi-omics identifies plant hormone signal transduction and phenylpropanoid biosynthesis as key pathways in kiwifruit (Actinidia chinensis var. deliciosa) resistance to Botryosphaeria Dothidea infection

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Kiwifruit can be infected by a fungus called Botryosphaeria dothidea, which causes soft rot and makes the fruit inedible. Researchers used advanced techniques to study what happens inside the fruit when infected, finding that certain plant hormones and chemical pathways become active to fight the infection. They identified two key genes that appear to control how the fruit responds to the fungus, which could help develop better ways to prevent this costly disease.

The Kelch Repeat Protein VdKeR1 Is Essential for Development, Ergosterol Metabolism, and Virulence in Verticillium dahliae

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Verticillium dahliae is a serious fungal disease that kills many important crops like cotton and tomato by clogging their water-conducting vessels. Scientists discovered a protein called VdKeR1 that helps this fungus grow and cause disease by controlling how it makes ergosterol, a crucial component of fungal cell membranes. When researchers removed this protein, the fungus grew poorly, couldn’t form survival structures, and was much less dangerous to plants.

The fungal STRIPAK complex: Cellular conductor orchestrating growth and pathogenicity

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The STRIPAK complex is a cellular control hub found in fungi that acts like a conductor orchestrating multiple cellular processes essential for fungal growth and the ability to cause disease. Scientists have discovered that this complex is highly conserved across different fungal species and regulates critical virulence factors like melanin production and capsule formation in pathogenic fungi. Because the fungal version differs from the human version, it presents a promising target for developing selective antifungal medications. Understanding how STRIPAK works provides insights into how fungi cause infections and could lead to new treatment strategies.

Elucidation of Twig Canker and Shoot Blight (TCSB) in Peach Caused by Diaporthe amygdali in the North of Italy in Emilia-Romagna

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Peach trees in northern Italy are suffering from a disease called twig canker and shoot blight caused by a fungus called Diaporthe amygdali. This research identified and characterized this fungus from affected orchards, studying how it grows at different temperatures to better understand and control the disease. The fungus grows best around 23-24°C and can survive extreme heat above 50°C. These findings will help fruit growers develop better strategies to protect their peach crops.

Research Topic: fungal pathogenesis