Application of penicillium roqueforti pr1 secondary metabolites and effective components in prevention and treatment of plant bacterial diseases

By preparing and purifying ethyl-α-D-glucoside and ethyl-β-D-glucopyranoside from the secondary metabolites of Penicillium erythropoiesisrum PR1, and using them as plant immune inducers, the problem of limited efficacy in the control of bacterial diseases in plants in existing technologies has been solved, and efficient and safe disease control has been achieved.

CN122139755BActive Publication Date: 2026-07-21SHANDONG PENGBO BIOTECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANDONG PENGBO BIOTECHNOLOGY CO LTD
Filing Date
2026-05-08
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Existing chemical control methods have limited effectiveness in controlling bacterial plant diseases, and there are problems with pesticide residues and environmental pollution. Furthermore, the application of existing plant immune inducers is limited, making it difficult to meet the needs for green, safe, and effective control.

Method used

Secondary metabolites of Penicillium erythropoiesis-producing strain PR1 and its active ingredients ethyl-α-D-glucoside and ethyl-β-D-glucopyranoside were used as plant immune inducers. Through preparation and purification processes, highly efficient and safe control components were obtained for the control of bacterial diseases such as bacterial leaf blight in rice.

Benefits of technology

It significantly improved the plant's resistance to bacterial diseases by inducing the activity of enzymes related to plant defense responses and the expression of salicylic acid signaling pathway, thereby enhancing the plant's disease resistance and achieving efficient and safe disease control.

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Abstract

The application discloses application of a secondary metabolite of Penicillium roqueforti PR1 and an effective component thereof in prevention and treatment of plant bacterial diseases, and belongs to the technical field of bactericides. The secondary metabolite of Penicillium roqueforti PR1 (Z44-K1) prepared by the application and ethyl-alpha-D-glucoside (Z44-K11) and ethyl-beta-D-glucopyranoside (Z44-K12) contained in the secondary metabolite have good prevention and control effects on rice bacterial leaf blight bacteria. The indoor prevention effect of Z44-K1 reaches 44.29% at a concentration of 50 ng / mL; the indoor prevention effect of Z44-K11 on rice bacterial leaf blight reaches 60.87% at 50 ng / mL; and the indoor prevention effect of Z44-K12 reaches 59.88% at 10 ng / mL. As plant immune inducers, the secondary metabolite and the effective component thereof are extremely low in dosage, safe, green and efficient, and provide a new idea for prevention and treatment of plant bacterial diseases.
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