Universität zu Köln

Zivaljic, Suzana, Schoenle, Alexandra, Nitsche, Frank, Hohlfeld, Manon, Piechocki, Julia, Reif, Farina, Shumo, Marwa ORCID: 0000-0003-2643-5486, Weiss, Alexandra, Werner, Jennifer, Witt, Madeleine, Voss, Janine and Arndt, Hartmut ORCID: 0000-0003-2811-3595 (2018). Survival of marine heterotrophic flagellates isolated from the surface and the deep sea at high hydrostatic pressure: Literature review and own experiments. Deep-Sea Res. Part II-Top. Stud. Oceanogr., 148. S. 251 - 260. OXFORD: PERGAMON-ELSEVIER SCIENCE LTD. ISSN 1879-0100

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Abstract

Although the abyssal seafloor represents the most common benthic environment on Earth, eukaryotic microbial life at abyssal depths is still an uncharted territory. This is in striking contrast to their potential importance regarding the material flux and bacteria consumption in the deep sea. Flagellate genotypes determined from sedimentary DNA deep-sea samples might originate from vital deep-sea populations or from cysts of organisms sedimented down from surface waters. The latter one may have never been active under deep-sea conditions. We wanted to analyze the principal ability of cultivable heterotrophic flagellates of different phylogenetic groups (choanoflagellates, ancyromonads, euglenids, kinetoplastids, bicosoecids, chrysomonads, and cercozoans) to survive exposure to high hydrostatic pressure (up to 670 bar). We summarized our own studies and the few available data from literature on pressure tolerances of flagellates isolated from different marine habitats. Our results demonstrated that many different flagellate species isolated from the surface waters and deep-sea sediments survived drastic changes in hydrostatic pressure. Barophilic behavior was also recorded for several species isolated from the deep sea indicating their possible genetic adaptation to high pressures. This is in accordance with records of heterotrophic flagellates present in environmental DNA surveys based on clone libraries established for deep-sea environments.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Zivaljic, Suzana UNSPECIFIED UNSPECIFIED UNSPECIFIED Schoenle, Alexandra UNSPECIFIED UNSPECIFIED UNSPECIFIED Nitsche, Frank UNSPECIFIED UNSPECIFIED UNSPECIFIED Hohlfeld, Manon UNSPECIFIED UNSPECIFIED UNSPECIFIED Piechocki, Julia UNSPECIFIED UNSPECIFIED UNSPECIFIED Reif, Farina UNSPECIFIED UNSPECIFIED UNSPECIFIED Shumo, Marwa UNSPECIFIED orcid.org/0000-0003-2643-5486 UNSPECIFIED Weiss, Alexandra UNSPECIFIED UNSPECIFIED UNSPECIFIED Werner, Jennifer UNSPECIFIED UNSPECIFIED UNSPECIFIED Witt, Madeleine UNSPECIFIED UNSPECIFIED UNSPECIFIED Voss, Janine UNSPECIFIED UNSPECIFIED UNSPECIFIED Arndt, Hartmut UNSPECIFIED orcid.org/0000-0003-2811-3595 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-196879
DOI:	10.1016/j.dsr2.2017.04.022
Journal or Publication Title:	Deep-Sea Res. Part II-Top. Stud. Oceanogr.
Volume:	148
Page Range:	S. 251 - 260
Date:	2018
Publisher:	PERGAMON-ELSEVIER SCIENCE LTD
Place of Publication:	OXFORD
ISSN:	1879-0100
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language EASTERN MEDITERRANEAN SEA; MID-NORTH-ATLANTIC; COMMUNITY STRUCTURE; HYDROTHERMAL VENT; ORGANIC-MATTER; WATER-COLUMN; GROWTH; PATTERNS; BACTERIA; BIOGEOGRAPHY Multiple languages Oceanography Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/19687