The structure and function of the microbial food chain involved in methane dynamics in the rice rhizosphere

2015 Fiscal Year Final Research Report

• Project/Area Number: 25292207
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Environmental agriculture(including landscape science)
• Research Institution: Nagoya University
• Principal Investigator: Murase Jun 名古屋大学, 生命農学研究科, 准教授 (30285241)
• Co-Investigator(Kenkyū-buntansha): ASAKAWA Susumu 名古屋大学, 大学院生命農学研究科, 教授 (50335014) ; WATANABE Takeshi 名古屋大学, 大学院生命農学研究科, 講師 (60547016)
• Research Collaborator: ASILOGLU Mohammed Rasit 名古屋大学, 大学院生命農学研究科, 博士課程後期課程 ; LI Yong 名古屋大学, 大学院生命農学研究科, 博士課程後期課程
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 水稲 / 根圏 / メタン / 原生生物 / 微生物食物連鎖 / 真核微生物

Outline of Final Research Achievements

The structure and functions of the microbial food web in the rice rhizosphere, the hot spot of methane dynamics in a rice field ecosystem, were studied. Field surveys and pot and microcosm experiments revealed that the rice rhizosphere was inhabited by the specific members of heterotrophic protists (ciliates, flagellates, and amoeba) showing the community shift to the redox conditions and supply of organic matters in the environment. The structure of the microbial food web in the rice rhizosphere that was driven by methane oxidation was also distinct from that of bulk soil.

Free Research Field

土壌微生物学