Universität zu Köln

Xu, Zhimeng, Wang, Min, Wu, Wenxue ORCID: 0000-0003-2196-2594, Li, Yifan, Liu, Qian, Han, Yuye, Jiang, Yong, Shao, Hongbing, McMinn, Andrew ORCID: 0000-0002-2133-3854 and Liu, Hongbin (2018). Vertical Distribution of Microbial Eukaryotes From Surface to the Hadal Zone of the Mariana Trench. Front. Microbiol., 9. LAUSANNE: FRONTIERS MEDIA SA. ISSN 1664-302X

Full text not available from this repository.

Abstract

Marine microbial eukaryotes are ubiquitous, comprised of phylogenetically diverse groups and play key roles in microbial food webs and global biogeochemical cycling. However, their vertical distribution in the deep sea has received little attention. In this study, we investigated the composition and diversity of the eukaryotes of both 0.2-3 mu m and > 3 mu m size fractions from the surface to the hadal zone (8727 m) of the Mariana Trench using Illumina MiSeq sequencing for the 18S rDNA. The microbial eukaryotic community structure differed substantially across size fractions and depths. Operational taxonomic unit (OTU) richness in the >3 mu m fraction was higher than that in the 0.2-3 mu m fraction at the same depth. For the 0.2-3 mu m fraction, sequences of Retaria (Rhizaria) were most abundant in the surface water (53.5%). Chrysophyceae (Stramenopiles) sequences dominated mostly in the samples from water depths below 1795 m. For the > 3 mu M fraction, sequences of Dinophyceae (Alveolata) were most abundant in surface waters (49.3%) and remained a significant proportion of total sequences at greater depths (9.8%, on average). Retaria sequences were abundant in samples of depths >= 1000 m. Amoebozoa and Apusozoa sequences were enriched in the hadal sample, comprising 38 and 20.4% of total sequences, respectively. Fungi (Opisthokonta) sequences were most abundant at 1759 m in both size fractions. Strong positive associations were found between Syndiniales (mainly MALV-I and MALV-II) and Retaria while negative associations were shown between MALV-II and Fungi in a co-occurrence analysis. This study compared the community structure of microbial eukaryotes in different zones in the deep sea and identified a distinct hadal community in the larger size fraction, suggesting the uniqueness of the eukaryotes in the biosphere in the Mariana Trench.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Xu, Zhimeng UNSPECIFIED UNSPECIFIED UNSPECIFIED Wang, Min UNSPECIFIED UNSPECIFIED UNSPECIFIED Wu, Wenxue UNSPECIFIED orcid.org/0000-0003-2196-2594 UNSPECIFIED Li, Yifan UNSPECIFIED UNSPECIFIED UNSPECIFIED Liu, Qian UNSPECIFIED UNSPECIFIED UNSPECIFIED Han, Yuye UNSPECIFIED UNSPECIFIED UNSPECIFIED Jiang, Yong UNSPECIFIED UNSPECIFIED UNSPECIFIED Shao, Hongbing UNSPECIFIED UNSPECIFIED UNSPECIFIED McMinn, Andrew UNSPECIFIED orcid.org/0000-0002-2133-3854 UNSPECIFIED Liu, Hongbin UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-176011
DOI:	10.3389/fmicb.2018.02023
Journal or Publication Title:	Front. Microbiol.
Volume:	9
Date:	2018
Publisher:	FRONTIERS MEDIA SA
Place of Publication:	LAUSANNE
ISSN:	1664-302X
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language ZOOPLANKTON FECAL PELLETS; COMMUNITY STRUCTURE; MARINE SNOW; PICOEUKARYOTIC DIVERSITY; CHALLENGER DEEP; SEA; OCEAN; ASSEMBLAGES; ECOSYSTEM; BOTTOM Multiple languages Microbiology Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/17601