The effect of a seed coating with Origanum vulgare essential oil on Clavibacter michiganensis subsp. michiganensis

Meral Yilmaz, Ömür Baysal and Ragip Soner Sīlme
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Meral Yilmaz: Department of Seed Pathology and Technology, Turkish Ministry of Agriculture and Forestry, Antalya Seed Certification and Test Agency, Antalya, Turkey
Ömür Baysal: Molecular Microbiology Unit of Molecular Biology and Genetics Department, Faculty of Science, Muğla Sitki Koçman University, Muğla, Turkey
Ragip Soner Sīlme: Center for Research and Practice in Biotechnology and Genetic Engineering, Istanbul University, Istanbul, Turkey

Plant Protection Science, 2021, vol. 57, issue 3, 217-225

Abstract: The study aimed to evaluate the efficacy of a seed film coating with Origanum vulgare Linnaeus essential oil (EO) against Clavibacter michiganensis subsp. michiganensis (Cmm) on tomatoes. Tomato seeds (cv. Rio Grande) coated with different doses of EO derived from O. vulgare were inoculated with Cmm (1.8 × 108 CFU/mL). O. vulgare's EO showed a remarkable inhibition effect on the Cmm growth. The EO effect against Cmm was determined based on the parameters, such as the inhibition zone and bacterial population in a seed. The GC-MS analysis of EO showed that carvacrol is the major component (at 74.05%), which may inhibit the bacterial growth. Later, we have expanded our studies to determine the inhibitory effect of the EO's mode of action on the pathogenic bacteria with a molecular docking analysis based on the molecular protein-ligand interaction. The results showed that carvacrol has a strong interaction with the bacterial expansin protein (PDB 4JJO) of Cmm and the qPCR analyses confirmed the effect of the O. vulgare treatment against Cmm. This original approach has the prominent potential to prevent seed transmission of Cmm for seed quality in the world, suggesting a method for paving the way for Cmm disease management.

Keywords: bacterial canker; carvacrol; molecular docking; protein-ligand interaction; real-time PCR; seed film coating (search for similar items in EconPapers)
Date: 2021
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpps:v:57:y:2021:i:3:id:177-2020-pps

DOI: 10.17221/177/2020-PPS

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