Abstract: The objective of the invention is to provide a plant activator with superior resistance-inducing activity and low toxicity and soil contamination. A plant activator comprising, as an active ingredient, an oxo fatty acid derivative of general formula (I): HOOC—(R1)—C?C—C(?O)—R2??(I) (wherein, R1 is a straight or branched alkylene group with 6 to 12 carbon atoms, and optionally comprises one or more double bonds, R2 is an alkyl group with 2 to 8 carbon atoms, and optionally comprises one or more branches and/or double bonds) or a salt or an ester thereof.

Abstract: The objective of the invention is to provide a plant activator with superior resistance-inducing activity and low toxicity and soil contamination. A plant activator comprising, as an active ingredient, an oxo fatty acid derivative of general formula (I): HOOC—(R1)—C?C—C(?O)—R2??(I) (wherein, R1 is a straight or branched alkyl group with 6 to 12 carbon atoms, and optionally comprises one or more double bonds, R2 is an alkyl group with 2 to 8 carbon atoms, and optionally comprises one or more branches and/or double bonds) or a salt or an ester thereof.

Abstract: The objective of the invention is to provide a plant activator with superior resistance-inducing activity and growth promoting activity and low toxicity and soil contamination. A plant activator comprising a fatty acid metabolite obtainable by a metabolism of a fatty acid with 4 to 30 carbon atoms by a proteobacteria under a dissolved oxygen concentration of 0.1-8 mg/L, and a method for manufacturing a plant activator comprising a fatty acid metabolite, comprising a step for fatty acid metabolism wherein a fatty acid with 4 to 30 carbon atoms is subjected to a proteobacterial metabolization under a dissolved oxygen concentration of 0.1-8 mg/L. A method for manufacturing a plant activator comprising a fatty acid metabolite, comprising a step for fatty acid metabolism wherein a fatty acid with 4 to 30 carbon atoms is subjected to a proteobacterial metabolization under a dissolved oxygen concentration of 0.1-8 mg/L.

Abstract: The objective of the invention is to provide a plant activator with superior resistance-inducing activity and growth promoting activity and low toxicity and soil contamination. A plant activator comprising a fatty acid metabolite obtainable by a metabolism of a fatty acid with 4 to 30 carbon atoms by a proteobacteria under a dissolved oxygen concentration of 0.1-8 mg/L, and a method for manufacturing a plant activator comprising a fatty acid metabolite, comprising a step for fatty acid metabolism wherein a fatty acid with 4 to 30 carbon atoms is subjected to a proteobacterial metabolization under a dissolved oxygen concentration of 0.1-8 mg/L. A method for manufacturing a plant activator comprising a fatty acid metabolite, comprising a step for fatty acid metabolism wherein a fatty acid with 4 to 30 carbon atoms is subjected to a proteobacterial metabolization under a dissolved oxygen concentration of 0.1-8 mg/L.

Abstract: The objective of the invention is to provide a plant activator with superior resistance-inducing activity and low toxicity and soil contamination. A plant activator comprising, as an active ingredient, an oxo fatty acid derivative of general formula (I): HOOC—(R1)—C?C—C(?O)—R2 ??(I) (wherein, R1 is a straight or branched alkyl group with 6 to 12 carbon atoms, and optionally comprises one or more double bonds, R2 is an alkyl group with 2 to 8 carbon atoms, and optionally comprises one or more branches and/or double bonds) or a salt or an ester thereof.

Abstract: The objective of the invention is to provide a plant activator with superior resistance-inducing activity and growth promoting activity and low toxicity and soil contamination. A plant activator comprising a fatty acid metabolite obtainable by a metabolism of a fatty acid with 4 to 30 carbon atoms by a proteobacteria under a dissolved oxygen concentration of 0.1-8 mg/L, and a method for manufacturing a plant activator comprising a fatty acid metabolite, comprising a step for fatty acid metabolism wherein a fatty acid with 4 to 30 carbon atoms is subjected to a proteobacterial metabolization under a dissolved oxygen concentration of 0.1-8 mg/L. A method for manufacturing a plant activator comprising a fatty acid metabolite, comprising a step for fatty acid metabolism wherein a fatty acid with 4 to 30 carbon atoms is subjected to a proteobacterial metabolization under a dissolved oxygen concentration of 0.1-8 mg/L.