Environmental Adaptability and Roles in Ammonia Oxidation of Aerobic Ammonia-Oxidizing Microorganisms in the Surface Sediments of East China Sea

被引:0
作者
Li, Wenhui [1 ]
Zhen, Yu [1 ,2 ,3 ]
Yang, Yuhong [1 ]
Wang, Daling [1 ]
He, Hui [4 ]
机构
[1] Ocean Univ China, Coll Environm Sci & Engn, Key Lab Marine Environm & Ecol, Minist Educ, Qingdao 266100, Peoples R China
[2] Qingdao Marine Sci & Technol Ctr, Lab Marine Ecol & Environm Sci, Qingdao 266237, Peoples R China
[3] Ocean Univ China, Frontiers Sci Ctr Deep Ocean Multispheres & Earth, Qingdao 266100, Peoples R China
[4] Ocean Univ China, Coll Marine Life Sci, Qingdao 266003, Peoples R China
基金
中国国家自然科学基金;
关键词
Ammonia oxidization; Archaea; Bacteria; Community structure; Sediment; SPATIAL-DISTRIBUTION; CHANGJIANG ESTUARY; AMOA GENES; ARCHAEA; BACTERIA; ABUNDANCE; DIVERSITY; NITRIFICATION; COMMUNITY; SALINITY;
D O I
10.1007/s12275-024-00166-5
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
This study investigated the community characteristics and environmental influencing factors of ammonia-oxidizing archaea (AOA) and ammonia-oxidizing bacteria (AOB) in the surface sediments of the East China Sea. The research found no consistent pattern in the richness and diversity of AOA and AOB with respect to the distance from the shore, indicating a complex interplay of factors. The expression levels of AOA amoA gene and AOB amoA gene in the surface sediments of the East China Sea ranged from 4.49 x 102 to 2.17 x 106 copies per gram of sediment and from 6.6 x 101 to 7.65 x 104 copies per gram of sediment, respectively. Salinity (31.77 to 34.53 PSU) and nitrate concentration (1.51 to 10.12 mu mol/L) were identified as key environmental factors significantly affecting the AOA community, while salinity and temperature (13.71 to 19.50 degrees C) were crucial for the AOB community. The study also found that AOA, dominated by the Nitrosopumilaceae family, exhibited higher gene expression levels than AOB, suggesting a more significant role in ammonia oxidation. The expression of AOB was sensitive to multiple environmental factors, indicating a responsive role in nitrogen cycles and ecosystem health. The findings contribute to a better understanding of the biogeochemical processes and ecological roles of ammonia-oxidizing microorganisms in marine sediments.
引用
收藏
页码:845 / 858
页数:14
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