Spatial Variability of Picoeukaryotic Communities in the Mariana Trench
Jing, Hongmei1; Zhang, Yue1,2; Li, Yingdong3; Zhu, Wenda1,2; Liu, Hongbin3
2018-10-18
Source PublicationSCIENTIFIC REPORTS
ISSN2045-2322
Volume8Issue:1Pages:12
Abstract

Picoeukaryotes play prominent roles in the biogeochemical cycles in marine ecosystems. However, their molecular diversity studies have been confined in marine surface waters or shallow coastal sediments. Here, we investigated the diversity and metabolic activity of picoeukaryotic communities at depths ranging from the surface to the abyssopelagic zone in the western Pacific Ocean above the north and south slopes of the Mariana Trench. This was achieved by amplifying and sequencing the V4 region of both 185 ribosomal DNA and cDNA using Illumina HiSeq sequencing. Our study revealed: (1) Four super-groups (i.e., Alveolata, Opisthokonta, Rhizaria and Stramenopiles) dominated the picoeukaryote assemblages through the water column, although they accounted for different proportions at DNA and cDNA levels. Our data expand the deep-sea assemblages from current bathypelagic to abyssopelagic zones. (2) Using the cDNA-DNA ratio as a proxy of relative metabolic activity, the highest activity for most subgroups was usually found in the mesopelagic zone; and (3) Population shift along the vertical scale was more prominent than that on the horizontal differences, which might be explained by the sharp physicochemical gradients along the water depths. Overall, our study provides a better understanding of the diversity and metabolic activity of picoeukaryotes in water columns of the deep ocean in response to varying environmental conditions.

DOI10.1038/s41598-018-33790-4
Indexed BySCI
Funding OrganizationNational Key R&D Program of China ; Chinese Academy of Sciences ; National Natural Science Foundation of China ; Hong Kong Research Grants Council through GRF
Language英语
Funding ProjectNational Key R&D Program of China[2018YFC0309805] ; Chinese Academy of Sciences[XDB06010202] ; National Natural Science Foundation of China[41776147] ; Hong Kong Research Grants Council through GRF[16128416] ; Hong Kong Research Grants Council through GRF[16101917]
WOS KeywordMarine Microbial Eukaryotes ; Challenger Deep ; Pacific-ocean ; Vertical-distribution ; West Spitsbergen ; Biological Pump ; Coastal Waters ; Ribosomal-rna ; Sargasso Sea ; Arctic-ocean
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000447591000014
PublisherNATURE PUBLISHING GROUP
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.idsse.ac.cn/handle/183446/6304
Collection深海科学研究部_深海生物学研究室_深海无脊椎动物蛋白质组学及分子生物学研究组
Corresponding AuthorJing, Hongmei; Liu, Hongbin
Affiliation1.Chinese Acad Sci, Inst Deep Sea Sci & Engn, CAS Key Lab Expt Study Deep Sea Extreme Condit, Sanya, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China
3.Hong Kong Univ Sci & Technol, Div Life Sci, Kowloon, Hong Kong, Peoples R China
Recommended Citation
GB/T 7714
Jing, Hongmei,Zhang, Yue,Li, Yingdong,et al. Spatial Variability of Picoeukaryotic Communities in the Mariana Trench[J]. SCIENTIFIC REPORTS,2018,8(1):12.
APA Jing, Hongmei,Zhang, Yue,Li, Yingdong,Zhu, Wenda,&Liu, Hongbin.(2018).Spatial Variability of Picoeukaryotic Communities in the Mariana Trench.SCIENTIFIC REPORTS,8(1),12.
MLA Jing, Hongmei,et al."Spatial Variability of Picoeukaryotic Communities in the Mariana Trench".SCIENTIFIC REPORTS 8.1(2018):12.
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