Long-term nutrient inputs shift soil microbial functional profiles of phosphorus cycling in diverse agroecosystems.

ABSTRACT: Microorganisms play an important role in soil phosphorus (P) cycling and regulation of P availability in agroecosystems. However, the responses of the functional and ecological traits of P-transformation microorganisms to long-term nutrient inputs are largely unknown. This study used metagenomics to investigate changes in the relative abundance of microbial P-transformation genes at four long-term experimental sites that received various inputs of N and P nutrients (up to 39 years). Long-term P input increased microbial P immobilization by decreasing the relative abundance of the P-starvation response gene (phoR) and increasing that of the low-affinity inorganic phosphate transporter gene (pit). This contrasts with previous findings that low-P conditions facilitate P immobilization in cult

SUBMITTER: Dai Z 

PROVIDER: S-EPMC7031380 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature