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Related Concept Videos

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Microorganisms play a crucial role in agriculture and the food industry, contributing to soil fertility, crop protection, and food production. Their functions range from nitrogen fixation and biopesticide production to fermentation and food preservation, making them indispensable to sustainable farming and food safety.Role in AgricultureNitrogen-fixing bacteria, such as Rhizobium (symbiotic) and Azotobacter (free-living), convert atmospheric nitrogen into ammonia through biological nitrogen...
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Biological control of tomato bacterial wilt and apple fire blight using n-docosane, a plant resistance inducer from Streptomyces sp. JCK-8055.

Pesticide biochemistry and physiology·2026
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Characterization of Rhizosphere Streptomyces hachijoensis JCK-6068 as a Multifunctional Agent for the Control of Soil-Borne Fungal and Oomycete Diseases.

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Streptomyces sp. JCK-7385 Effectively Controls Fusarium Head Blight in Rice and Wheat.

Sy Bien Vuong1, Ae Ran Park2, Yu Jeong Yeo3

  • 1Department of Agricultural Chemistry, Institute of Environmentally Friendly Agriculture, College of Agriculture and Life Science, Chonnam National University, Gwangju 61186, Korea.

The Plant Pathology Journal
|December 10, 2025
PubMed
Summary

This study shows Streptomyces sp. JCK-7385 is a promising biocontrol agent against Fusarium head blight (FHB) in cereals. It effectively reduces disease incidence and enhances control when combined with chemical fungicides, offering a sustainable alternative.

Keywords:
Fusarium head blightGUS assayStreptomyces sp.biological control agentinduced resistance

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Area of Science:

  • Agricultural Science
  • Plant Pathology
  • Microbiology

Background:

  • Fusarium head blight (FHB) poses a significant threat to global cereal production, primarily managed by chemical fungicides.
  • Overreliance on chemical pesticides has led to resistance, health concerns, and environmental issues, necessitating sustainable alternatives like biocontrol agents.
  • Streptomyces sp. JCK-7385, a rice-associated bacterium, is investigated for its potential as an eco-friendly biocontrol agent against FHB.

Purpose of the Study:

  • To evaluate the efficacy of Streptomyces sp. JCK-7385 as a biological control agent against Fusarium head blight (FHB) in cereals.
  • To investigate the mechanisms underlying JCK-7385's biocontrol activity, including plant defense induction.
  • To assess the stability and synergistic potential of JCK-7385 formulations in integrated disease management strategies.

Main Methods:

  • Biochemical characterization of Streptomyces sp. JCK-7385 for plant growth-promoting substances and enzymes.
  • Assessing induced resistance in *Arabidopsis* via PR1 gene expression and β-glucuronidase assays.
  • Greenhouse and field trials evaluating JCK-7385 cell suspension and suspension concentrate (SC) formulations against FHB in rice and wheat.
  • Testing the efficacy of integrated treatments combining JCK-7385 SC with a chemical fungicide (Peulrei).
  • Evaluating the storage stability of the JCK-7385 SC formulation.

Main Results:

  • Streptomyces sp. JCK-7385 produced indole-3-acetic acid, siderophore, ACC deaminase, cellulase, gelatinase, and chitinase.
  • JCK-7385 treatment induced PR1 gene expression in *Arabidopsis*, indicating induced resistance.
  • Greenhouse trials showed JCK-7385 SC reduced FHB incidence by 52.5% in rice, maintaining efficacy after heat storage.
  • Integrated treatment with JCK-7385 SC and Peulrei achieved high control values (71.7% in wheat, 63.3% in rice).
  • Field trials confirmed significant FHB suppression (52.0%) with the integrated approach in rice.

Conclusions:

  • Streptomyces sp. JCK-7385 demonstrates significant potential as a biological fungicide for managing FHB in cereals.
  • The biocontrol mechanism involves the induction of plant defense responses.
  • Integrated strategies combining Streptomyces sp. JCK-7385 with chemical fungicides offer enhanced and sustainable FHB control.