AGENTE NEMATOCIDA Y METODO PARA LA BIO-REPRESION DE NEMATODOS

• Main Authors: FERNANDEZ MACHUCA, MARINA, DE LA RIVA DE LA RIVA, GUSTAVO ALBERTO, VASGUEZ MENDEZ, RAMON, P, GARCIA GONZALEZ, MELBA, MENA CAMPOS, JESUS, COEGO GONZALEZ, ALBERTO
• Format: Patent
• Language: Spanish
• Published: 01.08.2006
• Edition: 4
• Subjects: AGRICULTURE; ANIMAL HUSBANDRY; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES, AS HERBICIDES; FISHING; FORESTRY; HUMAN NECESSITIES; HUNTING; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS; PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTSTHEREOF; TRAPPING

SE PRESENTAN NUEVAS CEPAS BACTERIANAS, EN PARTICULAR "SPHINGOBACTERIUM SPIRITIVORUM"C-926 Y "CORYNOBACTERIUM PAUROMETABOLUM" C-924 CON CARACTERISTICAS UTILES PARA EL SECTOR HORTICOLA DEBIDO A SUS EFECTOS NEMATOCIDICOS, QUE PUEDEN UTILIZARSE EN ESTE CONTEXTO PARA EL BIOCONTROL DE NEMATODOS. SE PRESENTAN BIONEMATICIDAS CAPACES DE CONTROLAR DE FORMA EFECTIVA LAS POBLACIONES DE NEMATODOS FITOPATOGENICOS EN DIFERENTES COSECHAS DE INTERES. LAS CEPAS UTILES PUEDEN AISLARSE A PARTIR DEL SUELO TOMADO DE LAS AREAS HABITUALMENTE AFECTADAS POR UNA ALTA INCIDENCIA DE NEMATODOS, DE PLANTAS DE BANANA QUE MUESTRAN SINTOMAS MENOS SEVEROS DE INFECCION. SE SELECCIONAN CEPAS QUE SEAN CAPACES DE AFECTAR A LOS HUEVOS DEL NEMATODO "MELOIDOGYNE INCOGNITA", EN EXPERIMENTOS LLEVADOS A CABO BAJO CONDICIONES DE LABORATORIO. SE COMPRUEBAN CEPAS ACTIVAS, TALES COMO LA CEPA C926 DEL "SPHINGOBACTERIUM SPIRITIVORUM" Y LA CEPA C-924 DEL "CORYNOBACTERIUM PAUROMETABOLUM" PARA SEÑALAR LA PROTECCION QUE PUEDE SUMINISTRAR LA PREPARACION BACTERIANA APLICADA DIRECTAMENTE, A LAS PLANTAS DE LA CALABAZA Y DE LA BANANA EN RELACION CON EL "MELOIDOGYNE INCOGNITA" Y CON EL "RADOPHOLUS SIMILIS". TAMBIEN SE PUEDEN COMPROBAR CEPAS CONTRA ZOONEMATODOS "HAEMONCHUS SP", Y "TRICHOSTRONGYLUS SP". EL CONTROL DE LOS PARASITOS PERMITE EL USO VETERINARIO. ADEMAS DE LOS NEMATODOS REFERIDOS ANTERIORMENTE, Y SELECCIONADOS DEBIDOS A LAS ALTAS PERDIDAS QUE PUEDEN PRODUCIR EN LAS COSECHAS, LAS CEPAS TAMBIEN PUEDEN SER EFECTIVAS EN EL CONTROL DE POBLACIONES DE "HETERODERA SSP.", "GLOBODERA SSP", Y "PRATYLENCHUS SSP.", ASI COMO OTRAS ESPECIES DE ZOONEMATODOS. A method for obtaining a bacterial strain having nematicidal properties comprises collecting samples of soil and/or plant tissues from an area affected by nematodes, distinguishing samples of highly affected material from samples of less affected material, isolating bacterial strains present in said samples, comparing bacterial strains present in highly affected samples with strains present in less affected samples, selecting strains present only in the less affected samples, testing nematicidal properties of the selected strains and selecting those bacterial strains having useful nematicidal properties. A method for the biocontrol of nematodes comprises contacting the soil, a plant or a seed with an effective quantity of a nematicidal agent which is a culture obtained from Sphingo bacterium spiritivorum C-926 and/or Corynobacterium pauro metabolum C-924, or a metabolite derived from the said strain, obtained by natural, recombinant or synthetic route, in an appropriate carrier, or using the said nematicidal agent in a veterinary compsn. for the control of 300 nematodes. The said cultures, used as nematodicidic agent in this method, or any mutation derived from them which is active against nematodes, are also claimed, as are nematicidic agents comprising the said agents and an appropriate carrier.