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Antifungal activity of Biscogniauxia sp. culture filtrates against the rice pathogen Magnaporthe oryzae

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Abstract

An ethyl acetate extract of a culture filtrate (ECF) from an unidentified fungal isolate O821 was evaluated for antifungal activity against the rice pathogen Magnaporthe oryzae. The O821-ECF significantly inhibited spore germination, appressorium formation, and mycelial growth of M. oryzae, and its antifungal activity was heat-stable. It also significantly suppressed the number and size of blast lesions. In an analysis of the ITS sequence of this isolate, it shared similarities with species of the fungus Biscogniauxia. These results suggest that isolate O821 of the genus Biscogniauxia produces a heat-stable antifungal compound(s) in its culture filtrate.

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Acknowledgements

The authors thank the Faculty of Life and Environmental Science at Shimane University for the financial support provided to publish this report.

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Authors and Affiliations

  1. Laboratory of Plant Pathology, Faculty of Life and Environmental Science, Shimane University, Matsue, 690-8504, Japan

    Quyet Thi Nguyen, Kana Ueda, Tomoko Tamura, Junichi Kihara & Makoto Ueno

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  1. Quyet Thi Nguyen
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  2. Kana Ueda
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  3. Tomoko Tamura
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  4. Junichi Kihara
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  5. Makoto Ueno
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Corresponding author

Correspondence to Makoto Ueno.

Additional information

The nucleotide sequence data reported are available in the DDBJ/EMBL/GenBank database under the accession number LC165015.

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Nguyen, Q.T., Ueda, K., Tamura, T. et al. Antifungal activity of Biscogniauxia sp. culture filtrates against the rice pathogen Magnaporthe oryzae . J Gen Plant Pathol 83, 109–112 (2017). https://doi.org/10.1007/s10327-017-0697-8

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  • DOI: https://doi.org/10.1007/s10327-017-0697-8

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