elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Influence of osmotic stress on desiccation and irradiation tolerance of (hyper)-thermophilic microorganisms

Beblo-Vranesevic, Kristina and Galinski, Erwin A. and Rachel, Reinhard and Huber, Harald and Rettberg, Petra (2016) Influence of osmotic stress on desiccation and irradiation tolerance of (hyper)-thermophilic microorganisms. Archives of Microbiology. Springer. DOI: 10.1007/s00203-016-1269-6 ISSN 0302-8933

Full text not available from this repository.

Official URL: http://dx.doi.org/10.1007/s00203-016-1269-6

Abstract

This study examined the influence of prior salt adaptation on the survival rate of (hyper)-thermophilic bacteria and archaea after desiccation and UV or ionizing irradiation treatment. Survival rates after desiccation of Hydrogenothermus marinus and Archaeoglobus fulgidus increased considerably when the cells were cultivated at higher salt concentrations before drying. By doubling the concentration of NaCl, a 30 times higher survival rate of H. marinus after desiccation was observed. Under salt stress, the compatible solute diglycerol phosphate in A. fulgidus and glucosylglycerate in H. marinus accumulated in the cytoplasm. Several different compatible solutes were added as protectants to A. fulgidus and H. marinus before desiccation treatment. Some of these had similar effects as intracellularly produced compatible solutes. The survival rates of H. marinus and A. fulgidus after exposure to UV-C (254 nm) or ionizing X-ray/gamma radiation were irrespective of the salt-induced synthesis or the addition of compatible solutes.

Item URL in elib:https://elib.dlr.de/105423/
Document Type:Article
Title:Influence of osmotic stress on desiccation and irradiation tolerance of (hyper)-thermophilic microorganisms
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Beblo-Vranesevic, KristinaInstitute of Aerospace Medicine, Radiation Biology Division, German Aerospace Center (DLR e.V.), Linder Höhe, 51147 Cologne, Germanyhttps://orcid.org/0000-0002-4834-7121
Galinski, Erwin A.Institute of Microbiology and Biotechnology, Rheinische Friedrich-Wilhelms University, Bonn, GermanyUNSPECIFIED
Rachel, ReinhardFaculty of Biology and Preclinical Medicine, Center for Electron Microscopy, University Regensburg, Regensburg, GermanyUNSPECIFIED
Huber, HaraldFaculty of Biology and Preclinical Medicine, Institute for Microbiology and Archaea Center, University of Regensburg, Regensburg, GermanyUNSPECIFIED
Rettberg, PetraInstitute of Aerospace Medicine, Radiation Biology Division, German Aerospace Center (DLR e.V.), Linder Höhe, 51147 Cologne, Germanyhttps://orcid.org/0000-0003-4439-2395
Date:2016
Journal or Publication Title:Archives of Microbiology
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI :10.1007/s00203-016-1269-6
Publisher:Springer
ISSN:0302-8933
Status:Published
Keywords:Compatible solutes, (Hyper)-thermophiles, Desiccation, Survival
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Research under Space Conditions
DLR - Research area:Raumfahrt
DLR - Program:R FR - Forschung unter Weltraumbedingungen
DLR - Research theme (Project):R - Vorhaben Strahlenbiologie
Location: Köln-Porz
Institutes and Institutions:Institute of Aerospace Medicine > Radiation Biology
Deposited By: Kopp, Kerstin
Deposited On:03 Aug 2016 14:30
Last Modified:06 Sep 2019 15:23

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.