Identification of Pseudomonas strains for the biological control of soybean red crown root rot
書誌事項
- 公開日
- 2022-08-25
- 資源種別
- journal article
- 権利情報
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- https://creativecommons.org/licenses/by/4.0
- https://creativecommons.org/licenses/by/4.0
- DOI
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- 10.1038/s41598-022-18905-2
- 公開者
- Springer Science and Business Media LLC
説明
<jats:title>Abstract</jats:title><jats:p>Soybean red crown root rot (RCR), caused by the soil-borne fungal pathogen,<jats:italic>Calonectria ilicicola</jats:italic>, is the most destructive disease affecting soybean production in Japan. To date, no resistant cultivars or effective fungicides have been developed to control this disease. In this study, we evaluated 13 bacterial strains to determine their efficacy in controlling<jats:italic>C. ilicicola</jats:italic>. We first investigated whether the volatile organic compounds (VOCs) emitted by the bacterial strains exhibited any antifungal activity against<jats:italic>C. ilicicola</jats:italic>using the double-plate chamber method. The results showed that VOCs from three<jats:italic>Pseudomonas</jats:italic>bacterial strains, OFT2 (<jats:italic>Pseudomonas</jats:italic>sp.), OFT5 (<jats:italic>Pseudomonas</jats:italic>sp.), and Cab57 (<jats:italic>Pseudomonas protegens</jats:italic>), exhibited strong inhibitory activity against<jats:italic>C. ilicicola</jats:italic>mycelial growth. Some antifungal activity was also observed in the culture supernatants of these<jats:italic>Pseudomonas</jats:italic>strains. Greenhouse soil inoculation tests showed that application of OFT2, OFT5, and Cab57 cultures around soybean seeds after seed sowing significantly reduced the severity of RCR, as shown by up to 40% reduction in<jats:italic>C. ilicicola</jats:italic>fungal growth in the roots and 180–200% increase in shoot and root fresh weights compared to the water control. Our results suggest that OFT2, Cab57, and OFT5 produce potent antifungal compounds against<jats:italic>C. ilicicola</jats:italic>, thereby showing considerable potential for the biological control of<jats:italic>C. ilicicola</jats:italic>during soybean production.</jats:p>
収録刊行物
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- Scientific Reports
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Scientific Reports 12 (1), 14510-, 2022-08-25
Springer Science and Business Media LLC
