Molecular ecological analyses of nitrogen-fixing bacterial consortia in rice rhizospere and plant

水稻根际和植株固氮菌群的分子生态学分析

• 批准号: 23658072
• 负责人: HIDAKA Makoto
• 金额: $ 1.33万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Challenging Exploratory Research
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 无数据
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-23658072/
• 关键词: 窒素固定細菌; 微生物間相互作用; 生物窒素肥料; イネ; 複合細菌系

Relationship between nitrogen-fixing activity of Klebsiella oxytoca R16, a diazotroph living in rice rhizosphere, and its bacterial interaction in rhizosphere flora was analyzed. Strain R16 was cultivated together with 9 strains of non-diazotroph isolated form paddy soil. Pseudomonas sp. RKF06 enhanced the nitrogen-fixing activity of R16 significantly. In inoculation assay of R16 into the rhizosphere of rice, R16 showed higher nitrogen-fixing activity when strain RKF06 was inoculated simultaneously. This finding will be a new manner to take advantage of diazotrophs.

分析了水稻根际固氮菌Klebsiella Oxtoca R16的固氮活性与根际菌群细菌相互作用的关系。R16菌株与从水稻土中分离到的9株非固氮菌一起培养。假单胞菌属RKF06显著提高了R16的固氮活性。在水稻根际接种R16的试验中，RKF06菌株同时接种时表现出较高的固氮活性。这一发现将是利用重氮菌的一种新方式。