Pathogen Identification and Control of Sooty Spot in Easy Peeler Mandarins: A Breakthrough Study

Introduction: Fresh citrus exports play a crucial role in global trade, with easy peeler mandarins being among the most demanded varieties. However, postharvest diseases can lead to significant economic losses. A recent study identifies Cladosporium ramotenellum as the causal pathogen of sooty spot in mandarins from Peru. This research provides key insights into pathogen identification, its resistance to common fungicides, and effective postharvest treatments to mitigate losses.

For more groundbreaking plant pathology research, visit https://www.plantsciencejournal.com/jpsp.

Key Findings:

• Cladosporium ramotenellum was isolated from affected fruit and identified through genomic sequencing.
• The pathogen is resistant to common fungicides such as imazalil (IMZ), pyrimethanil (PYR), and thiabendazole (TBZ).
• It was found to be susceptible to propiconazole (PPZ), prochloraz (PCL), and ortho-phenylphenol (OPP).
• The infection likely originates in the field and develops postharvest under cold storage conditions.

Postharvest Control Strategies: To combat C. ramotenellum infections, the study tested various postharvest treatments:

• Drenching with OPP and Peracetic Acid (PAA): Reduced fungal load significantly.
• Industrial Washing with PAA: Further minimized pathogen presence on the fruit surface.
• Waxing with Fungicide-Infused Coatings: Provided an additional protective barrier.

A full analysis of these strategies is available in the main journal article: https://doi.org/10.29328/journal.jpsp.1001059.

Implications for the Citrus Industry: The study highlights the importance of integrating effective postharvest treatments to control citrus diseases. Reducing the fungal spore load on the fruit surface through optimized washing and waxing treatments can mitigate postharvest losses and ensure fruit quality during export.

Further Reading: For more insights on plant pathology and citrus disease control, explore related articles at https://www.plantsciencejournal.com/jpsp.

Join the Conversation: What strategies have you used to combat postharvest citrus diseases? Share your thoughts in the comments below and explore more research at https://www.plantsciencejournal.com/jpsp.

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