Abstract
The fluorescent Pseudomonas strain PsIA12, selected out of 105 bacterial isolates from the wheat rhizosphere, promoted the development of young plants of wheat, maize, alfalfa, pea, rapeseed, oil raddish and mustard in greenhouse experiments. Seed inoculation with this strain also repeatedly stimulated the plant growth in field experiments on loamy sand and sandy loam. The Pseudomonas strain PsIA12 produces phytohormones (cytocinin,auxin)and siderophores, is able to solve Ca-phosphate and to metabolize pectin and cellulose. This strain showes antagonistic activities against soil borne plant root pathogenes and stimulates the nodulation of alfalfa and pea roots. The long-term survival and establishment of this strain in the rhizosphere of various crops was studied by an antibiotic resistant mutant.
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