Characteristics of the archaeal and bacterial communities in core sediments from Southern Yap Trench via in situ sampling by the manned submersible Jiaolong

doi:10.1016/j.scitotenv.2019.134884

CORC > 海洋研究所 > 中国科学院海洋研究所 > 深海极端环境与生命过程研究中心

	Characteristics of the archaeal and bacterial communities in core sediments from Southern Yap Trench via in situ sampling by the manned submersible Jiaolong
	Fu, Lulu 2,5,7; Li, Dong 6; Mi, Tiezhu 1,4,5; Zhao, Jun 6; Liu, Chenggang 6; Sun, Chengjun 3; Zhen, Yu 1,4,5
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2020-02-10
卷号	703 页码:15
关键词	Yap Trench Sediment Microbial community Potential metabolism Organic carbon
ISSN号	0048-9697
DOI	10.1016/j.scitotenv.2019.134884
通讯作者	Zhen, Yu(zhenyu@ouc.edu.cn)
英文摘要	The hadal environment is the deepest part of the ocean and harbors a significant number of unique microbial communities. Here, we collected core sediment samples of Southern Yap Trench with the deep-sea manned submersible Jiaolong and analyzed the microbial community structure and abundance in the samples through high-throughput sequencing and real-time fluorescence quantitative PCR (qPCR), taking physicochemical parameters into account to explore potential environmental drivers and metabolic pathways therein. Considering the typical "V-shape" topography and frequent sediment collapses on trench walls, the core sediments of Southern Yap Trench harbored distinct microbial populations with fluctuating distributions and metabolic processes dominated by Proteobacteria and Thaumarchaeota. To discover the main potential metabolic processes of microbes, functional genes were detected by qPCR. The abundance of bacteria was greater than that of archaea in Southern Yap Trench sediments. The abundance of ammonia-oxidizing archaea (AOA), ammonia-oxidizing bacteria (AOB), sulfate-reducing bacteria (SRB) and denitrifying bacteria (denitrifier) decreased with increasing depth and decreasing total organic carbon (TOC%) and total nitrogen (TN%) and showed a positive and significant correlation with TOC% (P < 0.01), TN% (P < 0.01), TOC/TN molar ratio (C/N ratio) (P < 0.01) and median grain size (P < 0.01). From the perspective of function based on the 16S rRNA gene, aerobic ammonium oxidization, carbon assimilation, and chemoheterotrophic function may be the dominant processes in Southern Yap Trench sediments. Moreover, considering the isolated geomorphological and hydrological characteristics of Southern Yap Trench, we hypothesized that the distinct hadal microbial ecosystem was driven by the endogenous recycling of organic matter in the hadal sediments associated with the trench geomorphology. (C) 2019 Elsevier B.V. All rights reserved.
资助项目	National Key Basic Research and Development Project of China[2015CB755904] ; National Natural Science Foundation of China[41606090] ; National Natural Science Foundation of China[41906124] ; National Key Research and Development Program of China[2018YFC0310604] ; Scientific Research Fund of the Second Institute of Oceanography (MNR)[JG1516]
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000505924300028
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/164385]
专题	海洋研究所_深海极端环境与生命过程研究中心
通讯作者	Zhen, Yu
作者单位	1.Minist Educ, Key Lab Marine Environm & Ecol, Qingdao 266100, Peoples R China 2.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao 266071, Peoples R China 3.Minist Nat Resources, Inst Oceanog 1, Marine Ecol Ctr, Qingdao 266237, Peoples R China 4.Ocean Univ China, Coll Environm Sci & Engn, Qingdao 266100, Peoples R China 5.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Ecol & Environm Sci, Qingdao 266237, Peoples R China 6.Minist Nat Resources, Inst Oceanog 2, State Ocean Adm, Key Lab Marine Ecosyst & Biogeochem, Hangzhou 310012, Zhejiang, Peoples R China 7.Chinese Acad Sci, Inst Oceanol, Ctr Deep Sea Res, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Fu, Lulu,Li, Dong,Mi, Tiezhu,et al. Characteristics of the archaeal and bacterial communities in core sediments from Southern Yap Trench via in situ sampling by the manned submersible Jiaolong[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,703:15.
APA	Fu, Lulu.,Li, Dong.,Mi, Tiezhu.,Zhao, Jun.,Liu, Chenggang.,...&Zhen, Yu.(2020).Characteristics of the archaeal and bacterial communities in core sediments from Southern Yap Trench via in situ sampling by the manned submersible Jiaolong.SCIENCE OF THE TOTAL ENVIRONMENT,703,15.
MLA	Fu, Lulu,et al."Characteristics of the archaeal and bacterial communities in core sediments from Southern Yap Trench via in situ sampling by the manned submersible Jiaolong".SCIENCE OF THE TOTAL ENVIRONMENT 703(2020):15.