期刊论文详细信息
iScience
Niche differentiation of ammonia-oxidizing archaea and related autotrophic carbon fixation potential in the water column of the South China Sea
Lijing Jiao1  Xiaohan Liu2  Yiguo Hong2  Yu Wang2  Yunhua Yang2  Jiaqi Ye3  Jiapeng Wu4  Yiben Li4  Fei Ye4  Juan Du4  Xiang He4 
[1] Corresponding author;Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China;School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China;Institute of Environmental Research at Greater Bay Area;
关键词: Global carbon cycle;    Global nutrient cycle;    Microbiology;    Molecular microbiology;   
DOI  :  
来源: DOAJ
【 摘 要 】

Summary: The significant primary production by ammonia-oxidizing archaea (AOA) in the ocean was reported, but the carbon fixation process of AOA and its community composition along the water depth remain unclear. Here, we investigated the abundance, community composition, and potential carbon fixation of AOA in water columns of the South China Sea. Higher abundances of the amoA and accA genes of AOA were found below the euphotic zone. Similarly, higher carbon fixation potential of AOA, evaluated by the ratios of amoA to accA gene, was also observed below euphotic zone and the ratios increased with increasing water depth. The vertical niche differentiation of AOA was further evidenced, with the dominant genus shifting from Nitrosopelagicus in the epipelagic zone to uncultured genus in the meso- and bathypelagic zones. Our findings highlight the higher carbon fixation potential of AOA in deep water and the significance of AOA to the ocean carbon budget.

【 授权许可】

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