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Characteristics of the archaeal and bacterial communities in core sediments from Southern Yap Trench via in situ sampling by the manned submersible Jiaolong
Fu, Lulu1,2,4; Li, Dong3; Mi, Tiezhu2,5,6; Zhao, Jun3; Liu, Chenggang3; Sun, Chengjun7; Zhen, Yu2,5,6
2020-02-10
Source PublicationSCIENCE OF THE TOTAL ENVIRONMENT
ISSN0048-9697
Volume703Pages:15
Corresponding AuthorZhen, Yu(zhenyu@ouc.edu.cn)
AbstractThe 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.
KeywordYap Trench Sediment Microbial community Potential metabolism Organic carbon
DOI10.1016/j.scitotenv.2019.134884
Indexed BySCI
Language英语
Funding ProjectNational 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 Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000505924300028
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/164386
Collection深海极端环境与生命过程研究中心
Corresponding AuthorZhen, Yu
Affiliation1.Chinese Acad Sci, Inst Oceanol, Ctr Deep Sea Res, Qingdao 266071, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Ecol & Environm Sci, Qingdao 266237, Peoples R China
3.Minist Nat Resources, Inst Oceanog 2, State Ocean Adm, Key Lab Marine Ecosyst & Biogeochem, Hangzhou 310012, Zhejiang, Peoples R China
4.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao 266071, Peoples R China
5.Minist Educ, Key Lab Marine Environm & Ecol, Qingdao 266100, Peoples R China
6.Ocean Univ China, Coll Environm Sci & Engn, Qingdao 266100, Peoples R China
7.Minist Nat Resources, Inst Oceanog 1, Marine Ecol Ctr, Qingdao 266237, Peoples R China
First Author AffilicationChinese Acad Sci, Inst Oceanol, Ctr Deep Sea Res
Recommended Citation
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.
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