Universität zu Köln

Schiwitza, Sabine, Arndt, Hartmut ORCID: 0000-0003-2811-3595 and Nitsche, Frank (2018). Four new choanoflagellate species from extreme saline environments: Indication for isolation-driven speciation exemplified by highly adapted Craspedida from salt flats in the Atacama Desert (Northern Chile). Eur. J. Protistol., 66. S. 86 - 97. JENA: ELSEVIER GMBH, URBAN & FISCHER VERLAG. ISSN 1618-0429

Full text not available from this repository.

Abstract

With this study we aim to extend the knowledge on the biogeography of craspedid choanoflagellates with additional data from extreme environments. Up to now, very little is known about choanoflagellates from extreme saline environments, as most studies have focused on marine and freshwater habitats. Though previously investigated high saline ice biota communities have indicated a possible adaptation to environments with high salt concentrations. Hypersaline endorheic basins, so-called salt flats or salares from the Atacama Desert in Northern Chile provide an intense environment regarding fluctuating and extreme salinities, which allow for studies on evolutionary adaptations of protists to hypersaline conditions. This study focused on choanoflagellate species isolated from different salt flats, their morphological characteristics using light and electron microscopy, molecular marker genes (SSU and LSU rDNA) and their salinity tolerance. Here, we described four new craspedid choanoflagellate species, highly adapted to the hypersaline environment of the Atacama Desert. This study extends our knowledge on choanoflagellate phylogeny and ecology and can become the basis for further molecular studies to understand the mechanisms of adaptations. Additionally, we emphasize the need of adding additional data such as autecological characteristics to amend species definitions, which is only possible from cultivated strains. This data would support the use of molecular data originating from metagenomic analyses also in an ecological context. (C) 2018 Elsevier GmbH. All rights reserved.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Schiwitza, Sabine UNSPECIFIED UNSPECIFIED UNSPECIFIED Arndt, Hartmut UNSPECIFIED orcid.org/0000-0003-2811-3595 UNSPECIFIED Nitsche, Frank UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-170242
DOI:	10.1016/j.ejop.2018.08.001
Journal or Publication Title:	Eur. J. Protistol.
Volume:	66
Page Range:	S. 86 - 97
Date:	2018
Publisher:	ELSEVIER GMBH, URBAN & FISCHER VERLAG
Place of Publication:	JENA
ISSN:	1618-0429
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language SEA; ADAPTATION; PHYLOGENY; PROTISTS; ENRICHMENT; MORPHOLOGY; DIVERSITY; ABUNDANCE; SEDIMENTS; LAKES Multiple languages Microbiology Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/17024