METHOD FOR CONTROLLING SOYBEAN RUST FUNGUS HAVING RESISTANCE AGAINST Qo SITE INHIBITOR

Abstract

The present invention provides a method for controlling a soybean rust fungus having an amino acid substitution of F129L on mitochondrial cytochrome b protein, by applying a compound represented by formula (I) [wherein Q represents a group represented by the following Q1, Q2, Q3, Q4 or Q5 (in the formulae, ● represents a binding site to benzene ring); X represents an oxygen atom or NH; L represents CH2, an oxygen atom or NCH3; E represents a C6-C10 aryl group, etc.; R1 represents a C1-C3 chain hydrocarbon group or a cyclopropyl group, etc.; R2 represents a C1-C3 chain hydrocarbon group or a cyclopropyl group, etc.; R3 represents a C1-C3 alkoxy group or a C1-C3 chain hydrocarbon group, etc.; and n is 0, 1, 2, or 3] or its N oxide or an agriculturally acceptable salt thereof.

Description

TECHNICAL FIELD[0001]This application claims priority to and the benefit of Japanese Patent Application No. 2018-143528 filed on Jul. 31, 2018, the entire contents of which are incorporated herein by reference.[0002]The present invention relates to a method for controlling soybean rust fungus having an amino acid substitution of F129L on mitochondrial cytochrome b protein.BACKGROUND ART[0003]The spread of phytopathogenic fungi that shows acquired character being resistant to agricultural fungicides becomes a major problem. Under such circumstances, FRAC (Fungicide Resistance Action Committee) has been established as an organization that provides guidelines for acquiring a resistance to existing agricultural fungicides, and suppressing and delaying the spread of the fungi having the resistance acquired. A variety of information on phytopathogenic fungi that shows a resistance to agricultural fungicides is available on the FRAC-provided website (http: / / www.frac.info / ). It has been kno...

AI Technical Summary

Benefits of technology

The patent explains that the invention can manage a type of soybean rust fungus that has a specific amino acid change on a protein called cytochrome b. This can help in controlling the spread and impact of the fungus on soybean plants.

Problems solved by technology

The spread of phytopathogenic fungi that shows acquired character being resistant to agricultural fungicides becomes a major problem.

It has been known that in the case of a phytopathogenic fungi, the main cause of acquiring a resistance is that a mutation of the phytopathogenic fungal gene encoding the target enzyme of the fungicide causes a partial substitution of amino acids in the target enzyme of the fungicides, which results in reducing the affinity between the fungicides and the target enzyme.

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