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Acidic soil conditions suppress zoospore release from zoosporangia in Olpidium virulentus

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Abstract

Lettuce big-vein disease, caused by Mirafiori lettuce big-vein virus and Lettuce big-vein associated virus, is suppressed when the pH of field soil becomes acidic. Therefore, we evaluated the effect of soil pH on the activities of Olpidium virulentus, the vector of the viruses. We found that acidic soil, pH less than 6.0, significantly reduced O. virulentus infection of the root and influenced the detection rate of zoospores released in the surrounding water. We concluded that acidic soil suppresses zoospore release from zoosporangia.

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Acknowledgements

This work was supported by the Cabinet Office, Government of Japan, Cross-ministerial Strategic Innovation Promotion Program (SIP), “Technologies for creating next-generation agriculture, forestry and fisheries” (Funding Agency: Bio-oriented Technology Research Advancement Institution, NARO).

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Authors and Affiliations

  1. Hyogo Prefectural Technology Center for Agriculture, Forestry and Fisheries, Befu, Kasai, 679-0198, Japan

    Yutaka Iwamoto, Shinji Nishiguchi, Katsunari Matsuura & Masataka Aino

  2. Graduate School of Agricultural Science, Kobe University, 1-1 Rokkodai, Nada, Kobe, 657-8501, Japan

    Kai Inoue, Hitoshi Nakayashiki & Kenichi Ikeda

Authors
  1. Yutaka Iwamoto
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  2. Kai Inoue
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  3. Shinji Nishiguchi
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  4. Katsunari Matsuura
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  5. Masataka Aino
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  6. Hitoshi Nakayashiki
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  7. Kenichi Ikeda
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Corresponding author

Correspondence to Kenichi Ikeda.

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Iwamoto, Y., Inoue, K., Nishiguchi, S. et al. Acidic soil conditions suppress zoospore release from zoosporangia in Olpidium virulentus . J Gen Plant Pathol 83, 240–243 (2017). https://doi.org/10.1007/s10327-017-0715-x

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  • DOI: https://doi.org/10.1007/s10327-017-0715-x

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