[Presence of Pseudomonas maltophilia in the rhizosphere of several cultivated plants].

Pseudomonas maltophilia has been identified in the rhizosphere of several cultured plants: cabbage, rape, mustard, corn, beet. In comparison with nonrhizospheric soil, all the rhizospheric samples analysed contain more of this Pseudomonas and the most important stimulation is supplied by cruciferous plants. The possible relation with greater amounts of sulphur-containing amino acids in root secretion is suggested.