Effects of AM fungal inoculation on the growth, nitrogen uptake and metabolism of Camellia Oleifera under different nitrogen levels.

ABSTRACT:

Background

Arbuscular 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.

Results

Plant growth initially increased but then decreased with increasing nitrogen application level. The addition of nitrogen increased the concentrations of NH₄⁺ and NO₃^-, as well as the activi

SUBMITTER: Wu F 

PROVIDER: S-EPMC12661873 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature