Fungistatic activity of bacteria isolated from a novel hydroponics system

2016 Fiscal Year Final Research Report

• Project/Area Number: 15K14666
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Plant protection science
• Research Institution: National Agriculture and Food Research Organization
• Principal Investigator: Iida Yuichiro 国立研究開発法人農業・食品産業技術総合研究機構, 野菜花き研究部門・野菜病害虫・機能解析研究領域, 主任研究員 (00456609)
• Research Collaborator: FUJIWARA Kazuki 国立研究開発法人農業・食品産業技術総合研究機構, 九州沖縄農業研究センター 生産環境研究領域, 任期付研究員 (40725008) ; SOMEYA Nobutaka 国立研究開発法人農業・食品産業技術総合研究機構, 野菜花き研究部門 野菜生産システム研究領域, 上級研究員 (60360575)
• Project Period (FY): 2015-04-01 – 2017-03-31
• Keywords: 有機質肥料活用型養液栽培 / Fusarium oyxsporum

Outline of Final Research Achievements

Multiple parallel mineralization (MPM) is a novel hydroponics system in which soil microorganisms mineralize organic fertilizers in a hydroponic solution, supplying nitrate nitrogen to plants. The MPM solution exhibits operative suppressiveness of both fungal and bacterial root-borne diseases, similar to natural disease-suppressive soils. The microbial community is able to inhibit mycelial growth and chlamydospore germination of plant pathogenic fungus Fusarium oxysporum, but does not eliminate the pathogen (showing fungistatic activity). In this study, we investigated which members of the MPM microbiota contribute to root disease suppression, and analyzed the mechanisms for its fungistatic activity.

Free Research Field

植物病理学