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

	Dynamics of Benthic Nitrate Reduction Pathways and Associated Microbial Communities Responding to the Development of Seasonal Deoxygenation in a Coastal Mariculture Zone
	Zhang, Xiaoli1 ; Yao, Cheng 1,2; Zhang, Bosong 3; Tan, Wenwen 1,2; Gong, Jun4 ; Wang, Guang-yu 3; Zhao, Jianmin1 ; Lin, Xianbiao 5
发表期刊	ENVIRONMENTAL SCIENCE & TECHNOLOGY
ISSN	0013-936X
	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
DOI	10.1021/acs.est.3c03994
通讯作者	Zhao, Jianmin([email protected]) ; Lin, Xianbiao([email protected])
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.
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
收录类别	SCI
语种	英语
关键词[WOS]	ANAEROBIC AMMONIUM OXIDATION ; NITROGEN-CYCLE ; TEMPERATURE RESPONSE ; MARINE-SEDIMENTS ; DENITRIFICATION ; ANAMMOX ; OXYGEN ; SEA ; BACTERIA ; HYPOXIA
研究领域[WOS]	Engineering ; Environmental Sciences & Ecology
WOS记录号	WOS:001074611500001
引用统计	被引频次：20[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.yic.ac.cn/handle/133337/32864
专题	海岸带生物学与生物资源利用重点实验室海岸带生物学与生物资源利用重点实验室_海岸带生物资源高效利用研究与发展中心
通讯作者	Zhao, Jianmin; Lin, Xianbiao
作者单位	1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Harbin Inst Technol, Sch Marine Sci & Technol, Dept Bioengn, Weihai 264209, Peoples R China 4.Sun Yat Sen Univ, Sch Marine Sci, Lab Microbial Ecol & Matter Cycles, Zhuhai 519082, Peoples R China 5.Ocean Univ China, Key Lab Marine Chem Theory & Technol, Minist Educ, Qingdao 266100, 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.