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The aim is to assess the biocontrol potential of indigenous endophytic Trichoderma and Streptomyces against potato late blight.

July 24, 2026HorticulturaeOpen Access

Indigenous Endophytic Trichoderma and Streptomyces Suppress Potato Late Blight Through Direct Antagonism and Modulation of Host Defense Responses

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The aim is to assess the biocontrol potential of indigenous endophytic Trichoderma and Streptomyces against potato late blight.
Integrated approach including antagonistic assays, molecular identification, and biochemical characterization.
Field trials conducted over two seasons to evaluate disease suppression by selected bioagents.
Microscopic observations and multivariate analyses to assess antagonistic mechanisms and treatment performance.
Eight Trichoderma and two Streptomyces strains showed up to 82.6% suppression of mycelial growth of Phytophthora infestans.
Trichoderma isolate T4 reduced disease incidence to 3.00% and severity to 2.18% in field trials.
Bioagent treatments reduced malondialdehyde to 62.00 nmol g−1 and modulated antioxidant enzyme activities.

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Randomized trial evaluates biocontrol efficacy of Trichoderma and Streptomyces against late blight, highlighting sustainable disease management.

Alsowayeh et al. (2026) studied this question.

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Randomized trial evaluates biocontrol efficacy of Trichoderma and Streptomyces against late blight, highlighting sustainable disease management.