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)

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Title:Main Title: 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)
Description: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 solated 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.
Identifier:10.1016/j.ejop.2018.08.001 (DOI)
Responsible Party
Creators:Sabine Schiwitza (Author), Hartmut Arndt (Author), Frank Nitsche (Author)
Publisher:Elseviere
Publication Year:2019
Topic
CRC1211 Topic:Biology
Related Subproject:B3
Subject:Keyword: Biodiversity
Geogr. Information Topic:Inland Waters
File Details
Filename:Schiwitza2019EurpJProt.pdf
Data Type:Text - Article
File Size:1.7 MB
Date:Available: 31.08.2018
Mime Type:application/pdf
Data Format:PDF
Language:English
Status:Completed
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Download Permission:Only Project Members
General Access and Use Conditions:According to the CRC1211DB data policy agreement.
Access Limitations:According to the CRC1211DB data policy agreement.
Licence:None
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Specific Information - Publication
Publication Status:Published
Review Status:Not peer reviewed
Publication Type:Article
Source:European Journal of Protistology
Source Website:www.sciencedirect.com
Volume:66
Number of Pages:11 (86 - 96)
Metadata Details
Metadata Creator:Frank Nitsche
Metadata Created:12.06.2019
Metadata Last Updated:12.06.2019
Subproject:B3
Funding Phase:1
Metadata Language:English
Metadata Version:V50
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