phylogenetic analysis – Page 30

Exploring fungal pathogens to control the plant invasive Rubus niveus on Galapagos Island San Cristobal

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Scientists in the Galapagos Islands are working to control an invasive raspberry plant (Rubus niveus) that has taken over about 30,000 hectares and is damaging native species. Rather than using costly manual removal or herbicides, researchers isolated and tested five different fungi found naturally on diseased raspberry plants to see if they could be used as biological control agents. These five fungi—including species like Colletotrichum and Fusarium—showed promise by causing leaf damage to the raspberry plant, offering hope for a more sustainable pest management solution.

Candidemia due to Candida lambica in a neutropenic oncology patient: A rare case report

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A 56-year-old cancer patient developed a serious bloodstream infection caused by a rare yeast called Candida lambica despite taking antifungal medications. Doctors identified the infection using genetic sequencing and found that the organism was sensitive to a different antifungal drug called voriconazole. After switching medications and removing the patient’s central line, the infection cleared up. This case demonstrates the importance of accurately identifying fungal infections and testing which medications work best against them.

Novel secondary metabolite from a new species of Hypoxylon saxatilis sp. nov. for suppressing bacterial wilt in tomato

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Researchers discovered a new fungus species (Hypoxylon saxatilis) living inside medicinal plants that produces a novel compound called tetrahydrofuran. This compound kills the bacterium that causes tomato wilt disease by damaging bacterial cell walls. In greenhouse tests, extract from this fungus reduced wilt disease severity by over 83%, suggesting it could be developed as an eco-friendly alternative to chemical pesticides for protecting tomato crops.

Phylogenetic Analysis of Trichoderma Species Associated with Green Mold Disease on Mushrooms and Two New Pathogens on Ganoderma sichuanense

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Researchers identified a new species of Trichoderma fungus that causes green mold disease in cultivated medicinal mushrooms, particularly Ganoderma sichuanense. Using DNA analysis and genetic comparison, they showed that this new species belongs to a group of Trichoderma fungi that are close relatives of species used for controlling plant diseases. The study suggests this fungus might have potential as a biocontrol agent while currently being problematic for mushroom farmers in China.

Mucor germinans, a novel dimorphic species resembling Paracoccidioides in a clinical sample: questions on ecological strategy

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Researchers discovered a new fungus called Mucor germinans that infected a cancer patient’s lungs and appeared as yeast cells rather than the typical thread-like fungal structures. This is unusual because Mucor infections normally show filamentous hyphae, and the yeast-like appearance made it look like a different fungus, potentially delaying correct diagnosis and treatment. The study shows that this fungus can change forms depending on temperature and other conditions, and identifying it requires checking for multiple nuclei in the cells to distinguish it from other similar-looking yeasts.

Two new Periconia species (Pleosporales, Ascomycota) in China

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Scientists discovered two new fungal species in China belonging to the genus Periconia. These fungi were found in different habitats: one in freshwater streams on decaying wood and another on dead corn leaves. By examining their physical features and DNA sequences, researchers confirmed they are distinct species that differ from known Periconia species. This discovery adds to our understanding of fungal diversity in Chinese ecosystems.

Four Unrecorded Species of Endophytic Diaporthe (Sordariomycetes) in Korea

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Researchers in Korea discovered four new species of endophytic fungi called Diaporthe living inside plant tissues without causing visible disease. Using genetic testing and microscopic examination, they identified D. caryae, D. phoenicicola, D. stewartii, and D. unshiuensis as previously unrecorded in Korea. These fungi can potentially produce compounds with medicinal properties or help manage plant diseases. This discovery helps scientists better understand the hidden fungal diversity in Korean ecosystems.

Two new Periconia species (Pleosporales, Ascomycota) in China

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Scientists discovered two previously unknown fungal species from the genus Periconia in China. One species was found growing on decaying wood in a freshwater stream in Guangxi Province, while the other was isolated from dead corn leaves in Yunnan Province. Through detailed microscopic examination and genetic testing, the researchers confirmed these are distinct new species with unique characteristics that set them apart from similar known species.

Biochemical and molecular characterization of fungal isolates from California annual grassland soil

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Researchers studied various fungi collected from California grassland soils to determine their potential for producing biofuels and healthy nutrients. They found that Mortierella alpina strains were particularly excellent at producing high amounts of useful oils and fatty acids. Specific strains were identified as the best candidates for industrial applications in creating biofuels and nutritional supplements. This research suggests fungi could be valuable tools for sustainable production of energy and health-promoting compounds.

New records of powdery mildew fungi on stone fruits from India

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Researchers in Kashmir have identified three types of powdery mildew fungi that infect peach, plum, and apricot trees. These are new diseases documented in India and Asia for these important fruit crops. Scientists used both traditional microscopy and modern DNA sequencing to identify the fungi, providing farmers with accurate information needed to manage these plant diseases effectively.

Research Keyword: phylogenetic analysis