Abstract: A method is for prevention and/or biological control of wilt caused by Ralstonia solanacearum, by use of suitable bacteriophages. In addition a method uses the structural characterisation, genome sequence and activity of three specific lytic bacteriophages of R. solanacearum. Podovirus presents an elevated stability between 4° C. and 30° C. in an aqueous medium in the absence of a host. As a result of the high level of stability, lytic activity, elevated specificity towards R. solanacearum and the absence of activity against the microbiota associated with the plants to be protected, bacteriophages are used for the biological control of R. solanacearum in river courses and irrigation water, as well as in a method for preventing and/or controlling the wilt produced by the bacteria, in which at least one of the bacteriophages, or combinations thereof, are delivered to the plants and/or the soil in the irrigation water.

Abstract: A method is for prevention and/or biological control of wilt caused by Ralstonia solanacearum, by use of suitable bacteriophages. In addition a method uses the structural characterisation, genome sequence and activity of three specific lytic bacteriophages of R. solanacearum. Podovirus presents an elevated stability between 4° C. and 30° C. in an aqueous medium in the absence of a host. As a result of the high level of stability, lytic activity, elevated specificity towards R. solanacearum and the absence of activity against the microbiota associated with the plants to be protected, bacteriophages are used for the biological control of R. solanacearum in river courses and irrigation water, as well as in a method for preventing and/or controlling the wilt produced by the bacteria, in which at least one of the bacteriophages, or combinations thereof, are delivered to the plants and/or the soil in the irrigation water.

Abstract: The invention consists in modifying the levels of accumulation and emission of monoterpenes and sesquiterpenes in citrus as a mechanism to achieve systemic resistance against pathogens or repellency against pests. The alteration of the content of d-limonene and other terpenes is achieved by genetic transformation via the introduction of a gene that encodes an enzyme with d-limonene synthase activity, from a citrus fruit or plant or from another living organism, in antisense or RNAi (RNA interference) configuration. Genetic modification is achieved either by Agrobacterium tumefaciens or any other method of genetic transformation of plants from protoplasts or explants. The construction is incorporated in citrus genotypes or related genera of the family Rutaceae in order to reduce the levels of accumulation and emission of the monoterpene and precursor compounds and/or derivatives, either of leaves or flowers and/or fruit.

Abstract: The invention consists in modifying the levels of accumulation and emission of monoterpenes and sesquiterpenes in citrus as a mechanism to achieve systemic resistance against pathogens or repellency against pests. The alteration of the content of d-limonene and other terpenes is achieved by genetic transformation via the introduction of a gene that encodes an enzyme with d-limonene synthase activity, from a citrus fruit or plant or from another living organism, in antisense or RNAi (RNA interference) configuration. Genetic modification is achieved either by Agrobacterium tumefaciens or any other method of genetic transformation of plants from protoplasts or explants. The construction is incorporated in citrus genotypes or related genera of the family Rutaceae in order to reduce the levels of accumulation and emission of the monoterpene and precursor compounds and/or derivatives, either of leaves or flowers and/or fruit.