The present technology relates to a strain of Pseudomonas protegens, RGM 2331, capable of producing the phytohormone indole acetic acid (IAA) and solubilising phosphorus (P), these features allowing same to be used to produce a biostimulant with antifungal properties, to promote growth in plants. The biostimulant and the use thereof directly on the foliar part or on the roots are also claimed.
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