Dynamics of Benthic Nitrate Reduction Pathways and Associated Microbial Communities Responding to the Development of Seasonal Deoxygenation in a Coastal Mariculture Zone

doi:10.1021/acs.est.3c03994

CORC > 烟台海岸带研究所 > 中国科学院烟台海岸带研究所 > 海岸带生物学与生物资源利用重点实验室

	Dynamics of Benthic Nitrate Reduction Pathways and Associated Microbial Communities Responding to the Development of Seasonal Deoxygenation in a Coastal Mariculture Zone
	Zhang, Xiaoli 5; Yao, Cheng 4,5; Zhang, Bosong 3; Tan, Wenwen 4,5; Gong, Jun 2; Wang, Guang-yu 3; Zhao, Jianmin 5; Lin, Xianbiao 1
刊名	ENVIRONMENTAL SCIENCE & TECHNOLOGY
	2023-09-27
卷号	57 期号:40 页码:15014-15025
关键词	coastal deoxygenation benthicN cycling geneticpotential coastal ecosystem mariculture zone
ISSN号	0013-936X
DOI	10.1021/acs.est.3c03994
通讯作者	Zhao, Jianmin(jmzhao@yic.ac.cn) ; Lin, Xianbiao(linxianbiao@ouc.edu.cn)
英文摘要	Intensive mariculture activities result in eutrophication and enhance coastal deoxygenation. Deoxygenation profoundly influences nitrate reduction processes and further the fate of nitrogen (N) in coastal systems. Herein, N-15 isotope labeling, real-time PCR, and high-throughput sequencing techniques were jointly used to investigate the participation and seasonal dynamics of sediment nitrate reduction pathways and the succession of functional microbial communities during the development of seasonal deoxygenation in a coastal aquaculture zone. Denitrification dominated benthic nitrate reduction (46.26-80.91%). Both denitrification and dissimilatory nitrate reduction to ammonium were significantly enhanced by summer deoxygenation (dissolved oxygen levels fell to 2.94 +/- 0.28 mg L-1), while anammox remained unchanged. The abundance of the nitrous oxide reductase gene nosZ increased during deoxygenation. The community of the nosZ gene was sensitive to deoxygenation, with Azospirillum and Ruegeria accounting for the majority. Pelobacter was overwhelming in the nrfA gene (encoding dissimilatory nitrite reductase) community, which was less affected by deoxygenation. The variations of benthic nitrate reduction processes were driven by bottom water oxygen combined with temperature, chlorophyll a, and microbial gene abundances and community compositions. Our results implicated that seasonal oxygen-deficient zones could be substantial N sinks of coastal ecosystems and important for N balance. Effective management measures need to be developed to avoid further exacerbation of coastal deoxygenation and maintain the sustainable development of mariculture.
WOS关键词	ANAEROBIC AMMONIUM OXIDATION ; NITROGEN-CYCLE ; TEMPERATURE RESPONSE ; MARINE-SEDIMENTS ; DENITRIFICATION ; ANAMMOX ; OXYGEN ; SEA ; BACTERIA ; HYPOXIA
WOS研究方向	Engineering ; Environmental Sciences & Ecology
语种	英语
WOS记录号	WOS:001074611500001
资助机构	National Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Science and Technology Development Program of Yantai, China
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/32863]
专题	海岸带生物学与生物资源利用重点实验室
通讯作者	Zhao, Jianmin; Lin, Xianbiao
作者单位	1.Ocean Univ China, Key Lab Marine Chem Theory & Technol, Minist Educ, Qingdao 266100, Peoples R China 2.Sun Yat Sen Univ, Sch Marine Sci, Lab Microbial Ecol & Matter Cycles, Zhuhai 519082, Peoples R China 3.Harbin Inst Technol, Sch Marine Sci & Technol, Dept Bioengn, Weihai 264209, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Xiaoli,Yao, Cheng,Zhang, Bosong,et al. Dynamics of Benthic Nitrate Reduction Pathways and Associated Microbial Communities Responding to the Development of Seasonal Deoxygenation in a Coastal Mariculture Zone[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2023,57(40):15014-15025.
APA	Zhang, Xiaoli.,Yao, Cheng.,Zhang, Bosong.,Tan, Wenwen.,Gong, Jun.,...&Lin, Xianbiao.(2023).Dynamics of Benthic Nitrate Reduction Pathways and Associated Microbial Communities Responding to the Development of Seasonal Deoxygenation in a Coastal Mariculture Zone.ENVIRONMENTAL SCIENCE & TECHNOLOGY,57(40),15014-15025.
MLA	Zhang, Xiaoli,et al."Dynamics of Benthic Nitrate Reduction Pathways and Associated Microbial Communities Responding to the Development of Seasonal Deoxygenation in a Coastal Mariculture Zone".ENVIRONMENTAL SCIENCE & TECHNOLOGY 57.40(2023):15014-15025.