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Streptomycetes are ubiquitous actinobacteria that play crucial roles in biocontrol, as well as in plant growth promotion, making them sustainable alternatives to chemical pesticides and inorganic fertilizers. This power of producing antimicrobial secondary metabolites, phytohormones, and bioactive compounds also plays a key role in disease suppression, solubilization of inorganic phosphates, and crop stress tolerance. In this chapter, we discuss Streptomyces-mediated biocontrol mechanisms such as the flow of antimicrobial metabolites, induced systemic resistance, and competition strategies that inhibit phytopathogens. Besides, it discusses the role of PGPR in the production of plant growth regulators such as auxins, cytokinins, and gibberellins and increasing the nutrient uptake, contributing to better cropping under different stressful climate conditions. It further elaborates on the incorporation of streptomycetes with organic farming and modern agriculture, its utilization in biofertilizers, and sustainable soil maintenance. Genomics, transcriptomics, proteomics, and metabolomics can double as quality tools for improvement and selection of bioagents toward the identification and characterization of novel biocontrol agents and better beneficial traits via genetic engineering. Field case studies, where commercially similar effectiveness to synthetic agrochemicals is found along with improved soil health and environmental impact. Despite their promise, however, they did face regulatory challenges and commercialization hurdles, such as lengthy approval processes, stabilization of formulations, and barriers to adoption in the marketplace. Overcoming these barriers will need harmonized policies, biotechnological developments, and public–private partnerships to avoid dichotomous policy spaces that would hinder the use of streptomycetes-based agricultural products. This chapter emphasizes the potential of streptomycetes in biological control and plant growth promotion in facilitating environment-friendly agriculture for climate-resilient crops.

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Potential of Streptomycetes as Biocontrol and Plant Growth-Promoting Agents

  • 章节

  • 发表日期：

    2026年

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  • Sahar Ahmed El-Shatoury,
  • Mohamed Khaled Diab

摘要

Streptomycetes are ubiquitous actinobacteria that play crucial roles in biocontrol, as well as in plant growth promotion, making them sustainable alternatives to chemical pesticides and inorganic fertilizers. This power of producing antimicrobial secondary metabolites, phytohormones, and bioactive compounds also plays a key role in disease suppression, solubilization of inorganic phosphates, and crop stress tolerance. In this chapter, we discuss Streptomyces-mediated biocontrol mechanisms such as the flow of antimicrobial metabolites, induced systemic resistance, and competition strategies that inhibit phytopathogens. Besides, it discusses the role of PGPR in the production of plant growth regulators such as auxins, cytokinins, and gibberellins and increasing the nutrient uptake, contributing to better cropping under different stressful climate conditions. It further elaborates on the incorporation of streptomycetes with organic farming and modern agriculture, its utilization in biofertilizers, and sustainable soil maintenance. Genomics, transcriptomics, proteomics, and metabolomics can double as quality tools for improvement and selection of bioagents toward the identification and characterization of novel biocontrol agents and better beneficial traits via genetic engineering. Field case studies, where commercially similar effectiveness to synthetic agrochemicals is found along with improved soil health and environmental impact. Despite their promise, however, they did face regulatory challenges and commercialization hurdles, such as lengthy approval processes, stabilization of formulations, and barriers to adoption in the marketplace. Overcoming these barriers will need harmonized policies, biotechnological developments, and public–private partnerships to avoid dichotomous policy spaces that would hinder the use of streptomycetes-based agricultural products. This chapter emphasizes the potential of streptomycetes in biological control and plant growth promotion in facilitating environment-friendly agriculture for climate-resilient crops.