Proteomic response to phosphorus deficiency and aluminum stress of three aluminum-tolerant phosphobacteria isolated from acidic soils
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Date
Authors
VISCARDI, SHARON
Barra, Patricio Javier
Duran, Paola
Delgado, Mabel
Viscardi, Sharon
Claverol, Stephane
Larama, Giovanni
Dumont, Marc
Mora, Maria de la Luz
Barra, Patricio Javier
Duran, Paola
Delgado, Mabel
Viscardi, Sharon
Claverol, Stephane
Larama, Giovanni
Dumont, Marc
Mora, Maria de la Luz
Authors
Date
Datos de publicación:
10.1016/j.isci.2023.107910
Keywords
Bacteriología - Microbiología - Proteómica - Ciencia del suelo
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Abstract
Aluminum (Al)-tolerant phosphobacteria enhance plant growth in acidic soils by improving Al complexing and phosphorus (P) availability. However, the impact of Al stress and P deficiency on bacterial biochemistry and physiology remains unclear. We investigated the single and mutual effects of Al stress (10 mM) and P deficiency (0.05 mM) on the proteome of three aluminum-tolerant phosphobacteria: Enterobacter sp. 198, Enterobacter sp. RJAL6, and Klebsiella sp. RCJ4. Cultivated under varying conditions, P deficiency upregulated P metabolism proteins while Al exposure downregulated ironsulfur and heme-containing proteins and upregulated iron acquisition proteins. This demonstrated that Al influence on iron homeostasis and bacterial central metabolism. This study offers crucial insights into bacterial behavior in acidic soils, benefiting the development of bioinoculants for crops facing Al toxicity and P deficiency. This investigation marks the first proteomic study on the interaction between high Al and P deficiency in acid soils-adapted bacteria.
Description
Keywords
Bacteriología , Microbiología , Proteómica , Ciencia del suelo
Citation
10.1016/j.isci.2023.107910