Effect of irrigated paddy rice and upland crop rotation on diversity of soybean rhizobia.

灌溉水稻和旱作轮作对大豆根瘤菌多样性的影响。

• 批准号: 19780049
• 负责人: SATO Takashi
• 金额: $ 2.41万
• 依托单位: Akita Prefectural University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2007
• 资助国家: 日本
• 起止时间: 2007 至 2009
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-19780049/
• 关键词: 土壌生物; 根粒菌; ダイズ; 土壌環境; 多様性; 群集構造

We investigated genetic and physiologic diversity of soybean rhizobia in order to clarify the ecology of soybean rhizobia in an irrigated paddy rice and upland crop rotation. In this study, we obtained some soybean rhizobia from an upland field and an upland field converted from paddy field, and then compared their genetic and physiologic properties. The rhizobia in the upland field and the upland field converted from paddy field were same genetic line, though genetic diversity in the upland field converted from paddy field was higher than that in the upland field. The nitrogen fixation activity of the rhizobia was not different between the two fields. The growth rate of rhizobia in the upland field converted from paddy field was faster than that in the upland field. It is suggested that soybean rhizobia in the upland field converted from paddy field had complicated genetic diversity and physiological property to adopt the soil environment in the irrigated paddy rice and upland crop rotation.

为了阐明水旱轮作条件下大豆根瘤菌的生态学，对大豆根瘤菌的遗传多样性和生理多样性进行了研究。本研究从高地和水田改旱田中分离到大豆根瘤菌，并比较了它们的遗传和生理特性。高地和水改旱田根瘤菌的遗传多样性相同，但水改旱田的遗传多样性高于高地。根瘤菌的固氮活性在两块地之间没有差异。稻田改旱地根瘤菌生长速度快于高地。水旱轮作大豆根瘤菌具有复杂的遗传多样性和生理特性，以适应高地轮作的土壤环境。

项目成果

異なる土壌環境におけるダイズ根粒菌Bradyrhizobium japonicumの多様性の比較

不同土壤环境下大豆根瘤菌Bradyrhizobium japonicum多样性比较

• 发表时间: 2009
• 作者: 中村結;佐藤恵美子;高階史章;金田吉弘;佐藤孝
• 通讯作者: 佐藤孝

重粘土壌水田転換畑から分離したダイズ根粒菌Bradyrhizobium japonicumの特徴植物微生物研究会

稻田转重粘土中大豆根瘤菌Bradyrhizobium japonicum的特性植物微生物研究组

• 发表时间: 2007
• 作者: 佐藤孝;善本さゆり;中村結;金田吉弘
• 通讯作者: 金田吉弘

異する土壌環境におけるダイズ根粒菌Bradyrhizobium japonicumの多様性の比較

不同土壤环境下大豆根瘤菌Bradyrhizobium japonicum多样性比较

• 发表时间: 2009
• 作者: 中村結;佐藤恵美子;高階史章;金田吉弘;佐藤孝
• 通讯作者: 佐藤孝

重粘土壌水田転換畑から分離したダイズ根粒菌Bradyrhizobium Japonicumの特徴

从稻田转化为重粘土中分离出的大豆根瘤菌Bradyrhizobium Japonicum 的特性

• 发表时间: 2007
• 作者: 佐藤 孝;善本 さゆり;中村 結;金田 吉弘
• 通讯作者: 金田 吉弘