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Sclerotinia sclerotiorum causes Sclerotinia stem rot on Dragon's head (Lallemantia iberica)

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Abstract

Dragon’s head (Lallemantia iberica) is a medicinal and oilseed crop cultivated in different parts of Iran. In Jun 2018 in the experimental plots in Gonbad-Kavous, and 2022 in a commercial field in Gorgan, both located in the north of country, a typical Sclerotinia stem rot was observed. The isolated Sclerotinia-like fungus from the infected plant sample was subjected to morphological as well as molecular and phylogenetic investigations using the internal transcribed spacer gene region. The obtained results showed that the fungus is Sclerotinia sclerotiorum. The pathogenicity tests on the plant in the field and under controlled conditions were positive. Koch’s postulates were confirmed through the successful re-isolation of the pathogen. To the extent of our knowledge, this is the first report of the disease not only in Iran but also in the world.

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Acknowledgements

This study was funded by DARI, AREEO through project number 2-15-15-022-961237. The authors would like to thank Dr. B. Asghari Khosrowshahi and P. Mohammadian for technical support.

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Correspondence to Hamid Reza Pouralibaba.

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All the authors declare that they have no conflict of interest.

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The fungus is a plant pathogen. So, no studies with human participants or animals were performed by any of the authors.

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Pouralibaba, H.R., Kheirgoo, M., Kowkab, S. et al. Sclerotinia sclerotiorum causes Sclerotinia stem rot on Dragon's head (Lallemantia iberica). J Plant Dis Prot 130, 431–436 (2023). https://doi.org/10.1007/s41348-023-00704-0

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  • DOI: https://doi.org/10.1007/s41348-023-00704-0

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