ArticleBMC plant biology2025
Effects of AM fungal inoculation on the growth, nitrogen uptake and metabolism of Camellia Oleifera under different nitrogen levels.
Article in BMC plant biology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundArbuscular mycorrhizal (AM) fungi can promote plant growth and improve plant nutrition. However, how AM fungi affect plant nitrogen uptake and assimilation through their influence on related gene regulation and enzyme systems remain poorly understood. This study investigated the effects of AM fungi on biomass, nitrogen uptake, nitrogen-assimilating enzyme activities, and the expression of genes related to nitrogen assimilation and nitrogen transport in Camellia oleifera under varying nitrogen levels, from deficit to excessive.
resultsPlant growth initially increased but then decreased with increasing nitrogen application level. The addition of nitrogen increased the concentrations of NH
conclusionsThe results demonstrated that plant nitrogen assimilation and metabolism were enhanced by AM fungi. This enhancement promoted plant growth under optimal nitrogen concentrations, and under excessive nitrogen levels, it led to reduced excessive accumulation of inorganic nitrogen while mitigating high-nitrogen-induced stress. This study establishes a foundational understanding of the role of AM fungi in the nitrogen uptake and metabolism of plants.
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