Characterization of bacterial second messengers involved in the interactions with plants

2014 Fiscal Year Final Research Report

• Project/Area Number: 24780045
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Plant pathology
• Research Institution: National Institute of Agrobiological Sciences
• Principal Investigator: TAKEUCHI Kasumi 独立行政法人農業生物資源研究所, 植物・微生物間相互作用研究ユニット, 主任研究員 (40370663)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: バイオコントロール細菌 / シグナル伝達系 / 植物保護 / 二次代謝産物

Outline of Final Research Achievements

Bacteria are metabolically versatile in response to the environments. But little is known about second messengers involved in this changing. In this study, we focused on biocontrol bacterium Pseudomonas protegens CHA0 (previously called Pseudomonas fluorescens CHA0) which suppresses plant diseases by producing extracellular enzymes and secondary metabolites with antibiotic activity in the rhizosphere. We have shown that ppGpp appears to be essential for sustaining epiphytic fitness and biocontrol activity in P. protegens CHA0.

Free Research Field

植物保護科学