Research Keyword: nitrogen metabolism

Leucocalocybe mongolica Fungus Enhances Rice Growth by Reshaping Root Metabolism, and Hormone-Associated Pathways

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Researchers discovered that a special fungus called Leucocalocybe mongolica, when added to soil, significantly improves rice plant growth without requiring chemical fertilizers. Plants grown in fungus-treated soil developed more branches (tillers), had longer roots, and contained more chlorophyll, making them greener and healthier. The study revealed that the fungus works by altering soil nutrients and triggering specific genes in rice roots that boost growth-promoting hormones and improve how plants process energy.

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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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Arbuscular mycorrhiza suppresses microbial abundance, and particularly that of ammonia oxidizing bacteria, in agricultural soils

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This study examined how a beneficial fungus called arbuscular mycorrhiza affects bacteria that break down ammonia in soil. Researchers tested 50 different agricultural soils and found that the fungus suppressed ammonia-oxidizing bacteria populations. Interestingly, the presence of the fungus actually increased ammonia levels in soil while decreasing nitrate, suggesting the relationship is more complex than simple competition for nutrients.

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Arbuscular mycorrhizal fungi colonization facilitates nitrogen uptake in cotton under nitrogen-reduction condition

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This study shows that beneficial soil fungi (arbuscular mycorrhizal fungi) can help cotton plants absorb more nitrogen from soil, especially when nitrogen fertilizer is reduced. The fungi form partnerships with cotton roots and extend into the soil with thread-like structures that absorb nitrogen and transport it to the plant. The research demonstrates that reducing nitrogen fertilizer while using these beneficial fungi could improve crop growth while reducing environmental pollution from fertilizer runoff.

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Diverse nitrogen acquisition strategies of conifer-associated ectomycorrhizal fungi shape unique responses to changing nitrogen regimes

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This research examines how different types of mushroom fungi that partner with conifer trees acquire nitrogen in different ways. Using genomic analysis, lab experiments, and historical mushroom samples from the past 60 years, scientists found that even closely related fungal species have distinct strategies for obtaining nitrogen from different sources. These findings suggest that coniferous forests may respond quite differently to changes in nitrogen availability compared to forests with broadleaf trees.

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