Analyses of the mechanism for improvement of nitrogen use efficiency in crops

提高作物氮肥利用效率的机理分析

• 批准号: 23248004
• 负责人: OHSUGI Ryu
• 金额: $ 13.4万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011-11-18 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-23248004/
• 关键词: 窒素利用効率; グルタミン酸デヒドロゲナーゼ; 遺伝子組換え作物; 炭素代謝; 窒素代謝

In order to clarify the mechanism of high nitrogen use efficiency caused by the introduction of fungal glutamate dehydrogenase(GDH) gene into rice and potato, some physiological and agronomical traits of GDH-introduced rice and potato were investigated. A certain improvement of source function such as photosynthetic rate, growth rate, yield and nitrogen absorption efficiency and/or nitrogen use efficiency were found. These results suggest that nitrogen absorbed in roots might transport into source leaves more effectively, improve source function like photosynthetic rate and result in the increase of dry matter and yield in both GDH rice and GDH potato.

为了阐明真菌谷氨酸脱氢酶基因导入水稻和马铃薯提高氮素利用效率的机理，研究了导入真菌谷氨酸脱氢酶基因水稻和马铃薯的部分生理和农艺性状。光合速率、生长速率、产量、氮素吸收效率和氮素利用效率等源函数均有一定程度的改善。这些结果表明，在GDH型水稻和GDH型马铃薯中，根系吸收的氮素可能更有效地运输到源叶中，改善光合作用等源功能，从而导致干物质和产量的增加。

项目成果

The effects of introduction of a fungal glutamate dehydrogenase, gene (gdhA) on the photosynthetic rates, biomass, carbon and nitrogen contents in transgenic potato

导入真菌谷氨酸脱氢酶基因（gdhA）对转基因马铃薯光合速率、生物量、碳氮含量的影响

• 发表时间: 2012
• 期刊: Plant Biotechnology
• 影响因子: 1.6
• 作者: Egami T;Wakayama M;Aoki N;Sasaki H;Kisaka H;Miwa T;Ohsugi R
• 通讯作者: Ohsugi R

The effects of introduction of a fungal glutamate dehydrogenase gene (gdhA) on the photosynthetic rates, biomass, carbon and nitrogen contents in transgenic potato

导入真菌谷氨酸脱氢酶基因(gdhA)对转基因马铃薯光合速率、生物量、碳氮含量的影响

• 发表时间: 2012
• 期刊: Plant Biotechnology
• 影响因子: 1.6
• 作者: Egami Tomohito