Abstract: An object of the present invention is to provide a means for imparting resistance against pathogenic fungal, pathogenic bacterial, or pathogenic viral disease to agriculturally useful plants. The present invention relates to a bacterium belonging to the genus Azospirillum or the genus Herbaspirillum capable of imparting resistance against pathogenic fungal, pathogenic bacterial, or pathogenic viral disease to a host plant by living symbiotically within the plant, a method for controlling plant disease using the bacteria, and plants produced by such method.

Abstract: Disease resistance is conferred to a plant by a technique completely differing from conventional techniques. The method of the present invention comprises a step of introducing at least one of the genes belonging to the TIFY family to a plant or enhancing the expression of the gene endogenous to the plant.

Abstract: It is intended to identify a novel gene involved in the induction of pathogen resistance by brassinosteroid and to prepare a disease-resistant plant with enhanced disease resistance by introducing the gene into plant cells of interest. Pathogen-resistant brassinosteroid mutants are isolated, and four genes obtained on the basis of the analysis of causative genes of the mutants were introduced into plant cells of interest to prepare transgenic plants.

Abstract: An object of the present invention is to provide a means for imparting resistance against pathogenic fungal, pathogenic bacterial, or pathogenic viral disease to agriculturally useful plants. The present invention relates to a bacterium belonging to the genus Azospirillum or the genus Herbaspirillum capable of imparting resistance against pathogenic fungal, pathogenic bacterial, or pathogenic viral disease to a host plant by living symbiotically within the plant, a method for controlling plant disease using the bacteria, and plants produced by such method.