Title:	Phosphate-solubilizing bacteria and phosphorus fertilization shape microbial dynamics in the maize rhizosphere.
Authors:	OLIVEIRA, R. G. de LANA, U. G. de P. OLIVEIRA-PAIVA, C. A. CAMPOLINO, M. L. AVELAR, J. V. S. A. de GOMES, E. A. SANTOS, T. T. SANTOS, F. C. dos SOUSA, S. M. de
Affiliation:	RAQUEL GOMES DE OLIVEIRA, UNIVERSIDADE FEDERAL DE SÃO JOÃO DEL-REI; UBIRACI GOMES DE PAULA LANA, CNPMS; CHRISTIANE ABREU DE OLIVEIRA PAIVA, CNPMS; MARIANA LOURENÇO CAMPOLINO; JOÃO VITOR SILVÉRIO ALVES DE AVELAR, UNIVERSIDADE FEDERAL DE SÃO JOÃO DEL-REI; ELIANE APARECIDA GOMES, CNPMS; THIAGO TEIXEIRA SANTOS, CNPTIA; FLAVIA CRISTINA DOS SANTOS, CNPMS; SYLVIA MORAIS DE SOUSA TINOCO, CNPMS.
Date Issued:	2025
Citation:	Diversity, v. 17, n. 10, 711, 2025.
Description:	The use of bioinoculants aligns with ecological intensification in agriculture, but their effects on crop performance and soil microbiota under different fertilization regimes remain unclear. This study evaluated the impact of a bioinoculant containing two phosphatesolubilizing bacterial strains (Priestia megaterium and Bacillus subtilis) on maize yield, root architecture, and rhizosphere microbial communities via seed inoculation in a clayey soil. Maize was cultivated for two consecutive seasons under treatments combining inoculation, phosphorus sources (triple superphosphate or reactive rock phosphate), and P doses (0 or 120 kg ha−1 of P2O5). Root traits, phosphatase activities, and microbial diversity were assessed at flowering, while agronomic parameters and nutrient content were measured at harvest. In the first season, microbial alpha diversity was higher, accompanied by a 31.5% increase in root surface area and a 46.2% increase in P-resin availability. In contrast, the second season showed greater phosphatase activity and higher grain P and K concentrations, by 42.3% and 38.2%, respectively. Grain yield did not differ significantly between inoculated and non-inoculated treatments; however, root, plant, and microbial traits varied markedly across seasons. Principal component analysis revealed that productivity was primarily driven by seasonal variation rather than by fertilization or inoculation. These findings emphasize that the effectiveness of bioinoculants and P fertilization, as well as their influence on the microbiota, are highly context-dependent, being shaped by environmental conditions, soil nutrient availability, and crop genotype.
Thesagro:	Variação Genética Milho Zea Mays
NAL Thesaurus:	Microbiome
Keywords:	Bioinoculante Microbioma Arquitetura radicular Root architecture Genetic diversity Diversidade genetica
DOI:	https://doi.org/10.3390/d17100711
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CNPMS)