Research Keyword: Ascomycota

Contamination of fungal genomes of Onygenaceae (Phylum Ascomycota) in public databases: incidence, detection, and impact

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Scientists found that many fungal genome sequences stored in public databases contain unwanted bacterial DNA that can interfere with research results. They developed a method to identify and remove this contamination using related high-quality fungal genomes as reference. After cleaning four contaminated genomes, the quality improved significantly and the contamination dropped from 5-12% to below 3%, demonstrating that careful screening is essential for reliable genetic research.

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Exploring Fungal Diversity in Marine Plastic (PET) Wastes and Seafoam in Udo Island, South Korea, with Reports of Two New Species

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Researchers collected fungi from plastic waste and seafoam on a South Korean island and identified 45 different types, including two completely new species never described before. These findings show that marine fungi are diverse and may help break down plastic or participate in ocean nutrient cycling. The study highlights how even seemingly temporary habitats like seafoam and pollution sources like plastic waste can harbor unique and important fungal communities.

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Degradation of Extra-Heavy Crude Oil by Fungi Isolated from Hydrothermal Vents Fields in the Gulf of California

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Scientists discovered that certain fungi living in extreme deep-sea hydrothermal vents can break down extra-heavy crude oil, a thick and difficult-to-degrade form of petroleum. Among eight fungal species tested, Aspergillus sydowii performed best, degrading about 40% of the crude oil. This discovery could lead to new biological methods for cleaning up oil spills in marine environments.

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New species and records of ascomycetes on cypress in Beijing, China

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Researchers in Beijing investigated fungal diseases affecting cypress trees, which are important for landscaping and have medicinal value. They collected samples from diseased and healthy cypress parts and identified 13 different fungal species, including two completely new species and two species previously unknown on cypress trees. The study helps us understand the various fungi living on cypress trees, both harmful pathogens and potentially beneficial endophytic fungi that may have useful medicinal properties.

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Phylogenomic, Morphological, and Phylogenetic Evidence Reveals Five New Species and Two New Host Records of Nectriaceae (Hypocreales) from China

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Researchers identified five new species of fusarioid fungi (Fusarium and Neocosmospora) found in China by combining morphological observations with advanced genetic analysis of 4,941 genes. These fungi are important because they can be beneficial endophytes, harmless decomposers, or disease-causing pathogens. The study used modern genomic techniques to clearly distinguish between closely related species and confirmed fundamental differences between the two main genera. These findings will help scientists better identify and manage diseases caused by these fungi in agriculture and medicine.

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