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Título
Evaluation of siderophores generated by pseudomonas bacteria and their possible application as Fe biofertilizers
Autor
Año del Documento
2023
Editorial
MDPI
Descripción
Producción Científica
Documento Fuente
Plants, 2023, Vol. 12, Nº. 23, 4054
Abstract
The application of synthetic iron chelates to overcome iron deficiency in crops is leading to a high impact on the environment, making it necessary to find more friendly fertilizers. A promising alternative is the application of biodegradable iron chelates, such as those based on siderophores. In the present work, seven bacterial strains of the genus Pseudomonas were selected for their ability to secrete pyoverdine, a siderophore with a high affinity for iron, which could be used as a biofertilizer. The concentration of siderophores secreted by each bacterium expressed as desferrioxamine B equivalents, and the pyoverdine concentration was determined. Their potential as Fe biofertilizers was determined based on their capacity to complex Fe, determining the maximum iron complexation capacity at alkaline pH and selecting the RMC4 strain. The biostimulant capacity of the RMC4 strain was evaluated through the secretion of organic acids such as the hormone Indol-3-acetic acid or glutamic acid, among others, in a kinetic assay. Finally, the genome of RMC4 was determined, and the strain was identified as Pseudomonas monsensis. The annotated genome was screened for genes and gene clusters implicated in biofertilization and plant growth promotion. Besides iron mobilization, genes related to phosphorus solubilization, production of phytohormones and biological control, among others, were observed, indicating the suitability of RMC4 as an inoculant. In conclusion, RMC4 and its siderophores are promising sources for Fe biofertilization in agriculture.
Materias (normalizadas)
Iron
Biofertilizer
Fertilizante
Siderophore
Ecology
Pseudomonas
Microbiology
Plant science
Plant biotechnology
Analytical chemistry
Agricultural ecology
Ecología agrícola
Materias Unesco
2417.13 Ecología Vegetal
2414 Microbiología
2301 Química Analítica
ISSN
2223-7747
Revisión por pares
SI
Patrocinador
Ministerio de Economía y Competitividad - (project RTI2018-096268-B-I00)
Ministerio de Ciencia e Innovación de España, Agencia Española de Investigación (AEI) - (projects PID2022-141721OB-C21 and PID2021-125070OB-I00)
Ministerio de Ciencia e Innovación - (grant PRE-2019-091246)
Ministerio de Ciencia, Innovación y Universidades, Ayudas Margarita Salas, Universidad Politécnica de Madrid y Unión Europea Next-GenerationEU - (grant RD 289/2021)
Ministerio de Ciencia e Innovación de España, Agencia Española de Investigación (AEI) - (projects PID2022-141721OB-C21 and PID2021-125070OB-I00)
Ministerio de Ciencia e Innovación - (grant PRE-2019-091246)
Ministerio de Ciencia, Innovación y Universidades, Ayudas Margarita Salas, Universidad Politécnica de Madrid y Unión Europea Next-GenerationEU - (grant RD 289/2021)
Version del Editor
Propietario de los Derechos
© 2023 The authors
Idioma
eng
Tipo de versión
info:eu-repo/semantics/publishedVersion
Derechos
openAccess
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