Effects of p-Hydroxyphenylacetic Acid and p-Hydroxybenzoic Acid on Soil Bacterial and Fungal Communities

Soil phenolic acids mainly come from crop residue and root exudates, which are often reported as allelochemicals affecting growth soil microbial community. Here, two acid compounds, p-hydroxyphenylacetic (HPA) p-hydroxybenzoic (HBA) were amended to the soils incubated under room conditions, samples collected soybean corn fields separately. The community was determined by PCR-DGGE (polymerase chain reaction-denatured gradient gel electrophoresis) clone methods. Microbial biomass carbon (MBC) measured based on fumigation–extraction method. result revealed that HPA/HBA amendment significantly affected bacterial fungal structures. enriched some distinct bacteria fungi. induced Gemmatimonas, Bacillus, Acidobacteria, while fungi Penicillium Aspergillus. HPA enhanced more quantities of than HBA. diversity in treated with HBA higher HPA. It speculated degrading This study comprehensively analyzed effects increased understanding monoculture barrier agricultural production.