Capacidad funcional de bacterias solubilizadoras de fosfato aisladas de suelos cultivados con Elaeis guineensis

karen margarita cotes solano; luz elena marquez jimenez; Carla cecilia Bolaños contresras; juan carlos prada herrera

doi:10.22490/21456453.9781

Vol. 17 No. 2 (2026)

Published 2026-09-26

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Functional capacity of phosphate-solubilizing bacteria isolated from soils cultivated with Elaeis guineensis

DOI: https://doi.org/10.22490/21456453.9781

karen margarita cotes solano Popular University of Cesar

Luz E. Marquez Popular University of Cesar

Carla C. Bolaños Popular University of Cesar

Juan C. Prada Popular University of Cesar

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Abstract
References

Contextualization: Phosphate-solubilizing bacteria are important in agricultural soils for the transformation of insoluble phosphorus into forms that can be assimilated by plants, improving fertility, fertilizer use efficiency and the sustainability of production systems. Phosphorus is an essential nutrient for plant growth; however, in many agricultural soils it is found in poorly available forms, which limits its uptake in economically important crops such as African palm (Elaeis guineensis).

Knowledge gap: In the department of Cesar, where this crop has high economic relevance, there is little information on the diversity and functional potential of BSF present in the rhizosphere, which restricts the development of biofertilizers adapted to local conditions.

Objective: To isolate, identify and characterize phosphate-solubilizing bacteria in soils cultivated with African palm in Cesar, evaluating their capacity to produce organic acids. Methodology: Thirty rhizospheric soil samples were collected from five commercial plantations. Bacteria were isolated on selective medium with insoluble phosphate and their solubilization rate was evaluated. Identification was performed by amplification of the 16S rRNA gene and the organic acid profile was determined by high performance liquid chromatography.

Results and conclusions: Nine strains with high solubilizing capacity were isolated, identifying Pseudomonas fluorescens, Bacillus subtilis, Enterobacter cloacae and Burkholderia cepacia, the latter not previously reported in Cesar. The strains produced gluconic, citric and oxalic acid, showing their potential for the development of regional biofertilizers.

keywords: Organic acids, Microbial biodiversity, Liquid chromatography, Soil microbiology, African palm

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cotes solano, karen margarita, Marquez jimenes, L. E., Bolaños contreras, C. cecilia, & Prada herrera, J. carlos. (2026). Functional capacity of phosphate-solubilizing bacteria isolated from soils cultivated with Elaeis guineensis. Revista De Investigación Agraria Y Ambiental, 17(2), 229-246. https://doi.org/10.22490/21456453.9781

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