Use of agmatine and / or spermidine in the control of plant diseases caused by phytopathogenic pythium species

By using spermine and spermidine biological agents in the prevention and control of plant diseases, the spore germination and mycelial growth of Phytophthora infestans are inhibited, solving the problems of drug resistance and environmental pollution in existing technologies, and achieving efficient and environmentally friendly disease control.

CN122250462APending Publication Date: 2026-06-23AGRI GENOMICS INST CHINESE ACADEMY OF AGRI SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
AGRI GENOMICS INST CHINESE ACADEMY OF AGRI SCI
Filing Date
2026-03-24
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

Existing technologies for controlling plant diseases caused by Phytophthora in China suffer from problems such as frequent chemical resistance, pesticide residue pollution of the environment, and limited effectiveness of agricultural measures, which cannot meet the needs of large-scale agricultural production.

Method used

Using spermine and/or spermidine as biological agents, spraying them onto the stems, leaves and fruits of plants inhibits the spore germination and mycelial growth of Phytophthora. Specifically, it inhibits the transaminase activity of glycoprotein GP42, a cell wall component of Phytophthora, thereby achieving the control of Phytophthora blight in peppers, tomatoes, potatoes and tomatoes.

Benefits of technology

Spermine and spermidine effectively inhibit the spore germination and mycelial growth of Phytophthora, reducing the area affected by plant diseases, with no residual pollution, low risk of drug resistance, and low production cost.

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Abstract

The present application relates to the application of spermine and / or spermidine in preventing and treating plant diseases caused by Phytophthora. The present application finds that spermine and spermidine can effectively inhibit the spore germination and mycelium growth of Phytophthora capsici Leonian and P. infestans Mont. and can effectively prevent and treat the plant diseases caused by P. capsici Leonian and P. infestans Mont., including pepper Phytophthora blight, tomato Phytophthora blight, potato late blight and tomato late blight, and significantly reduce the plant disease area.
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