Research Topic: nitrogen metabolism

Multi-meta-omics reveal unique symbiotic synchronization between ectomycorrhizal fungus and soil microbiome in Tricholoma matsutake habitat

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Researchers studied the complex relationship between matsutake mushrooms and the microorganisms in the soil where they grow. They discovered that matsutake fungi create special partnerships with specific bacteria that help them thrive, and that all these organisms work together in coordinated metabolic ways. The study reveals that understanding these underground partnerships is crucial for potentially cultivating matsutake mushrooms commercially in the future.

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Organic Nitrogen Supplementation Increases Vegetative and Reproductive Biomass in a Versatile White Rot Fungus

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Researchers studied how adding nitrogen from plant litter affects the growth and mushroom production of a wood-rotting fungus called Cyclocybe aegerita. They found that adding the organic compound adenosine—which naturally occurs in plant litter—significantly boosted both the fungus’s vegetative growth and the production of mushrooms. The results suggest that fungi living in wood benefit from being able to absorb nitrogen-rich compounds from nearby plant material, which improves their ability to grow and reproduce.

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Low Temperature Enhances N-Metabolism in Paxillus involutus Mycelia In Vitro: Evidence From an Untargeted Metabolomic Study

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Researchers studied how a common forest fungus (Paxillus involutus) responds to cold temperatures like those found in spring and autumn. Surprisingly, even though the fungus grew slower in the cold, it actually increased its nitrogen uptake and production of amino acids, the building blocks of proteins. This suggests the fungus has special adaptation mechanisms to thrive in cold environments, which could be important for understanding how climate change might affect forest health.

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Fungal symbiont Mycena complements impaired nitrogen utilization in Gastrodia elata and supplies indole-3-acetic acid to facilitate its seed germination

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A special type of orchid called Gastrodia elata cannot survive on its own because it has lost the ability to produce its own food and certain plant growth hormones. Instead, it relies completely on a fungal partner called Mycena to provide nitrogen nutrients and auxin (a growth hormone). This study reveals exactly how Mycena does this by analyzing their genes and how they communicate, showing that the fungus acts as a nutritional life-support system for the orchid seed’s germination.

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Low Temperature Enhances N-Metabolism in Paxillus involutus Mycelia In Vitro: Evidence From an Untargeted Metabolomic Study

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This study examined how a common forest fungus (Paxillus involutus) responds to cold temperatures by analyzing its chemical composition. When kept at cold temperatures like those found in spring and autumn forests, the fungus took up and used more nitrogen for making amino acids and other nitrogen compounds, even though it grew more slowly. This suggests that cold-adapted fungi have special mechanisms to acquire nutrients efficiently in cold conditions, which may be important for how they help trees survive in changing climates.

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Fungal symbiont Mycena complements impaired nitrogen utilization in Gastrodia elata and supplies indole-3-acetic acid to facilitate its seed germination

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Gastrodia elata is a special orchid that cannot make its own food and must rely entirely on a fungal partner called Mycena. Scientists discovered that the orchid has lost genes needed to use nitrogen and make growth hormones, while the fungus Mycena has kept these genes. By providing nitrogen and a hormone called auxin, the fungus helps the orchid seeds germinate and grow.

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