Research Keyword: carbon metabolism

Fungus-mediated bacterial survival and migration enhance wood lignin degradation

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Researchers discovered that certain bacteria living in decaying wood can travel along fungal threads and help fungi break down tough lignin more efficiently. The bacteria consume sugar and aromatic compounds produced by the fungi, which removes substances that would otherwise slow down the fungal degradation process. This mutualistic partnership between bacteria and fungi shows how nature optimizes wood decomposition in forests, with potential applications for improving biomass conversion in industrial settings.

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Oxaloacetate anaplerosis differently contributes to pathogenicity in plant pathogenic fungi Fusarium graminearum and F. oxysporum

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Two important crop-destroying fungi, Fusarium graminearum and F. oxysporum, rely differently on a metabolic enzyme called pyruvate carboxylase to cause disease. Researchers found that removing this enzyme completely eliminates the ability of F. oxysporum to infect tomato plants by blocking its capacity to penetrate roots and break down plant cell walls. However, the same enzyme deletion has minimal effect on F. graminearum’s ability to infect wheat, suggesting these fungi have evolved different metabolic strategies for attacking their hosts.

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Comparative proteomics reveals the mechanism of cyclosporine production and mycelial growth in Tolypocladium inflatum affected by different carbon sources

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Researchers studied how different sugars (fructose and sucrose) affect a fungus’s ability to produce cyclosporine A, an important drug used after organ transplants to prevent rejection. Using advanced protein analysis techniques, they found that fructose makes the fungus better at producing the drug, while sucrose makes it grow more mycelium (fungal threads). By identifying the specific proteins involved in each process, scientists can now develop better methods to produce more of this valuable medicine.

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2-Nonanol produced by Bacillus velezensis EM-1: a new biocontrol agent against tobacco brown spot

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Researchers discovered that a beneficial bacterium called Bacillus velezensis produces a natural compound called 2-nonanol that effectively kills the fungus causing brown spots on tobacco leaves. This compound works by disrupting the fungus’s ability to obtain energy and handle stress. Testing on tobacco leaves showed that 2-nonanol could significantly reduce disease development. This discovery offers a promising environmentally-friendly alternative to chemical fungicides for protecting tobacco crops.

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