Abstract: The present invention refers to the strain CECT8538 of Pseudomonas putida and mutants thereof, and the use of said strain as a pesticide in controlling plant diseases caused by fungi and bacteria. Further aspects of the invention relate to methods for preparing pesticidal compositions comprising said strain. Finally, the invention relates to a method for controlling various plant diseases caused by fungi and bacteria in a plant, comprising treating the plant and/or seed thereof or substrate used for growing said plant with the strain CECT8538 of P. putida or a composition including it.

Abstract: The invention relates to a microorganism from the species Lysobacter enzymogenes, having nematicidal activity and the ability to promote plant growth. The invention also provides methods for obtaining a biomass of said microorganism, as well as methods for biologically controlling nematodes, for treating and preventing plant infection caused by nematodes, and for promoting plant growth based on the use of said microorganism or of phytosanitary products obtained therefrom.