Molecular ecological study on fixing carbon dioxides by an ammonia-oxidizing archaea in natural ecosystems

为了研究氨氧化古菌在自然界中具有固定二氧化碳能力的丰度，进行了以下实验：(1)氨氧化古菌培养体系的建立，(2)利用稳定同位素探针法对氨氧化古菌进行碳酸氢盐固定，(3)参与二氧化碳向低铵固定的转录。这些分析表明，自然界中氨氧化古生菌可以固定二氧化碳。

To investigate the abundance of ammonia-oxidizing archaea to be able to fix carbon dioxide in nature, the following experiments were conducted.(1)establishment of ammonia-oxidizing archaea culture ,(2)bicarbonate fixation of ammonia-oxidizing archaea by using stable isotope probing method,(3)transcription involved in fixation carbon dioxide toward low ammonium. These analyses suggested the fixation carbon dioxide by ammonia-oxidiaing archaea in nature.