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Systematic investigation of germination responses of Bacillus subtilis spores in different high-salinity environments

Nagler, K. and Moeller, R. (2015) Systematic investigation of germination responses of Bacillus subtilis spores in different high-salinity environments. Fems Microbiology Ecology, 91 (5), fiv023-fiv023. Federation of European Microbiological Societies, Published by Blackwell Publishing Ltd.. DOI: 10.1093/femsec/fiv023 ISSN 0168-6496

Full text not available from this repository.

Official URL: http://dx.doi.org/10.1093/femsec/fiv023

Abstract

High-salinity environments play an increasingly important role in ecology regarding soil salinization due to human-induced processes, but also need to be considered in terms of natural soil desiccation and extreme habitats. It has been shown previously that spore germination of the ubiquitous soil bacterium Bacillus subtilis is detrimentally affected by the presence of high NaCl concentrations, but the underlying mechanisms and effects of other salts remained obscure. To address these two points, we performed a systematic analysis with 32 different salts using spectrophotometric and microscopic methods. It could be shown that inhibitory strength varies considerably among different salts. Although osmotic effects seem to play an important role, ionic composition and concentration (especially of the anion) as well as chemical properties seem to be decisive for the extent of germination inhibition. At the current state of knowledge, fluxes of ions, Ca²⁺-DPA and water are likely affected by all salts, whereas the exact inhibition mechanism of each salt might further depend on the respective properties of the involved ions. Hence, the observed inhibition likely is a result of several phenomena interacting with each other. Altogether this study highlights the complex impact of ionic environments on the life cycle of spore formers.

Item URL in elib:https://elib.dlr.de/98132/
Document Type:Article
Title:Systematic investigation of germination responses of Bacillus subtilis spores in different high-salinity environments
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Nagler, K.Radiation Biology Department, Institute of Aerospace Medicine, German Aerospace Center (DLR), Cologne, Germany.UNSPECIFIED
Moeller, R.Radiation Biology Department, Institute of Aerospace Medicine, German Aerospace Center (DLR), Cologne, Germany.UNSPECIFIED
Date:2015
Journal or Publication Title:Fems Microbiology Ecology
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:91
DOI :10.1093/femsec/fiv023
Page Range:fiv023-fiv023
Publisher:Federation of European Microbiological Societies, Published by Blackwell Publishing Ltd.
ISSN:0168-6496
Status:Published
Keywords:spore germination, salt stress, salt-dependent germination, inhibition, ions, metals, osmotic stress
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:14 Sep 2015 09:38
Last Modified:06 Sep 2019 15:19

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