Research Keyword: Chaetothyriales

Two Novel Exophiala Species Isolated from Galls on the Chinese Magnolia-Vine (Schisandra Chinensis) in Korea

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Scientists in Korea discovered two previously unknown types of black yeast fungi living inside galls (abnormal growths) on Chinese magnolia vines caused by tiny gall midge insects. Using genetic testing and microscopic examination, they identified these as entirely new species of fungi. These fungi appear to have beneficial relationships with their host plants, potentially helping them grow better and resist environmental stress. This discovery adds to our understanding of the diverse fungal species in Korea and their interactions with plants and insects.

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Fungal alkaloids mediate defense against bruchid beetles in field populations of an arborescent ipomoea

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Morning glory trees (Ipomoea murucoides) form beneficial relationships with fungal partners that live inside their tissues and produce toxic compounds called alkaloids. These alkaloids accumulate in the tree’s seeds and protect them from beetle damage. Trees hosting the common fungal partner Ceramothyrium produce more of the protective alkaloid swainsonine and suffer less seed damage than those with a different fungal partner, demonstrating how this natural partnership helps the plant defend its offspring.

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Morphological and Phylogenetic Characterization of Trichomerium koreanum sp. nov. and Exophiala radicis Belonging to Chaetothyriales Fungi in Korea

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Scientists discovered a new type of black yeast fungus in Korea called Trichomerium koreanum, found on a longhorn beetle. They also identified another fungus called Exophiala radicis in Korean soil for the first time. These fungi are related to species that can sometimes cause infections in humans and animals. The researchers used genetic testing and microscopy to confirm these findings and understand how these fungi are related to other similar species.

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Pathogenic characterization of Phialophora submersa, a new black yeast isolated from freshwater sediments in Spain

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Scientists discovered a new black yeast fungus called Phialophora submersa in Spanish river sediments and tested whether it could infect humans. Using laboratory macrophage (immune cell) models, they found that this environmental fungus exhibits pathogenic potential similar to known disease-causing Phialophora species, though at intermediate levels. The fungus showed resistance to some antifungal drugs and displayed strain-dependent ability to survive various stress conditions. This research suggests that environmental fungal species may pose unexpected health risks despite not being able to grow at normal human body temperature.

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