• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of soils & sediments >Involvement of microaerophilic iron-oxidizing bacteria in the iron-oxidizing process at the surface layer of flooded paddy field soil
【24h】

Involvement of microaerophilic iron-oxidizing bacteria in the iron-oxidizing process at the surface layer of flooded paddy field soil

机译：微苯胺氧化铁氧化细菌在淹水稻田土壤表面层的铁氧化过程中

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Purpose To reveal whether microaerophilic Fe(II)-oxidizing bacteria (FeOB) participate in the Fe(II) oxidation at the oxic-anoxic interface in flooded paddy field soil, distribution of microaerophilic FeOB belonging toGallionellaceae(Gallionella-related FeOB) in the surface layer of a flooded paddy soil microcosm and O(2)conditions for the Fe(II) oxidation by a microaerophilic Fe(II) oxidizer,Ferrigenium kumadaiAn22, were investigated. Materials and methods Flooded paddy soil microcosms were incubated for 30 days. Five soil layers were sampled at 2-mm intervals from the soil surface after the incubation. The community structure ofGallionella-related FeOB was analyzed with qPCR and DGGE methods. In the culture experiment, O(2)and Fe(II) profiles inF. kumadaiAn22-inoculated and non-inoculated gel-stabilized gradient tubes were analyzed, in which an opposing gradient of O(2)and Fe(II) was formed. Results A thin oxic layer was formed at the soil surface after the incubation. The copy number of 16S rRNA genes ofGallionella-related FeOB was highest at the top 0-2 mm layer of the soil. DGGE analysis showed that several bands derived fromGallionella-related FeOB newly appeared at the top soil layer with high intensity. In the culture experiment,F. kumadaiA22 grew at the oxic side of the oxic-anoxic interface with the formation of Fe oxides. Conclusion The present study indicated thatGallionella-related microaerophilic FeOB proliferated in the surface layer of flooded paddy field soil, presumably by oxidizing Fe(II) in the oxic-anoxic interface.
机译：目的揭示微苯胺Fe（ii） - 氧化细菌（Feob）是否参与在洪水稻田土壤中的氧 - 缺氧界面的Fe（II）氧化，在表面上分布归属于Galionellaceae（Gallionella相关的FeoB）研究了微碳酸Fe（II）氧化剂，铁庚尼kumaadaian22的Fe（II）氧化的泛洪水水稻微观微观微观微观微观和O（2）条件。材料和方法淹没了水稻土壤微镜具30天。在孵育后，以2mm间隔以2mm的间隔采样五个土壤层。用QPCR和DGGE方法分析了与Gallionella相关的FeoB的社区结构。在培养实验中，O（2）和Fe（II）型缺口。分析了Kumadaian22接种和非接种的凝胶稳定梯形管，其中形成O（2）和Fe（II）的相对梯度。结果在孵育后在土壤表面形成薄的氧层。在土壤的顶部0-2 mm层中，与Ggallionella相关的FeoB的16S rRNA基因的拷贝数最高。 DGGE分析表明，几个带源自Ggallionella相关的FoOB的条带新出现在高强度的顶部土层。在培养实验中，f。 KumadaIa22在氧缺氧界面的氧侧增长，形成Fe氧化物。结论本研究表明，在淹水稻田土的表面层中增殖的与氧化缺氧界面中的Fe（II）氧化过氧化Fe（II），表明与泛滥稻田土壤的表面层增殖的含有相关的微苯胺Feob。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号