Enhanced nitrogen load improved soil phosphorus availability by regulating P-cycling microbial genes in a typical subtropical estuary (Min River), Southeast China.

ABSTRACT:

Background

Enhanced nitrogen (N) load was considered a critical factor influencing phosphorus (P) availability and P-cycling in marsh soils. However, information on the links between soil P availability and microbial genes involved in P-cycling processes under N enrichment conditions remains scarce.

Methods

A field N load experiment with four treatments (N₀, N_low, N_medium, and N_high) was conducted in Cyperus malaccensis marsh of the Min River estuary, and soil P availability, the relative abundances of P-cycling functional genes and their regulatory roles on P availability were investigated.

Results

The total phosphorus (TP) contents in soils were significantly positively correlated with N load levels (p < 0.05). Compared wi

SUBMITTER: Wu H 

PROVIDER: S-EPMC12667128 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature