Abstract: The present invention is directed to a transgenic plant including a mutated form of a cytosolic isocitrate dehydrogenase (ICDH) encoding gene, wherein the transgenic plant has a reduced ethylene production rate, a reduced respiration rate or both. Further provided are methods for prolonging the development to ripening period of a plant or a part derived from same, and for producing an agent suitable for increasing shelf life of a plant or a part derived from same.

Abstract: The present invention relates to a composition for conferring to a subject, immunity against a gastrointestinal (GI) pathogen, particularly Salmonella. The composition of the invention comprises as an active ingredient at least one microorganism transformed with at least one vector comprising a nucleic acid sequence coding for an immunoglobulin-like polypeptide having specific binding affinity for said pathogen. The invention further relates to the single-chain variable fragment (ScFv) antibody molecule having affinity for Salmonella species, used by the invention and to methods for the treatment of infections of gastrointestinal enteropathogenic bacteria in a subject.