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Growth phase-dependent UV-C resistance of Bacillus subtilis: data from a short-term evolution experiment

Wassmann, Marko and Moeller, Ralf and Reitz, Günther and Rettberg, Petra (2011) Growth phase-dependent UV-C resistance of Bacillus subtilis: data from a short-term evolution experiment. Archives of Microbiology, 193 (11), pp. 823-832. Springer. DOI: 10.1007/s00203-011-0722-9. ISSN 0302-8933.

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Abstract

After 700 generations of a short-term evolution experiment with Bacillus subtilis 168, two strains were isolated, the UV-adapted strain MW01 and the UV-unexposed control strain DE69, and chosen for UV-C radiation resistance studies with respect to growth phase. The ancestral strain from the evolution experiment was used as reference for comparative purposes. Cells of the UV-adapted strain showed signiWcant diVerences in their physiology (growth behavior, doubling time, cell density, and sporulation capacity) and were more resistant to UV in all monitored stages. These Wndings implicate the evolution to an increased UV radioresistance was not limited to a speciWc growth phase and led to reduced growth dynamics, compared with those obtained from the ancestral and the control strain.

Document Type:Article
Title:Growth phase-dependent UV-C resistance of Bacillus subtilis: data from a short-term evolution experiment
Authors:
AuthorsInstitution or Email of Authors
Wassmann, Marko Radiation Biology Department, Research Group ‘Astrobiology’, German Aerospace Center (DLR), Institute of Aerospace Medicine, Linder Hoehe, 51147 Cologne (Köln), Germany
Moeller, Ralf Radiation Biology Department, Research Group ‘Astrobiology’, German Aerospace Center (DLR), Institute of Aerospace Medicine, Linder Hoehe, 51147 Cologne (Köln), Germany
Reitz, Günther Radiation Biology Department, German Aerospace Center (DLR), Institute of Aerospace Medicine, Linder Hoehe, 51147 Cologne (Köln), Germany
Rettberg, Petra Radiation Biology Department, Research Group ‘Astrobiology’, German Aerospace Center (DLR), Institute of Aerospace Medicine, Linder Hoehe, 51147 Cologne (Köln), Germany
Date:2011
Journal or Publication Title:Archives of Microbiology
Refereed publication:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:193
DOI:10.1007/s00203-011-0722-9
Page Range:pp. 823-832
Publisher:Springer
ISSN:0302-8933
Status:Published
Keywords:Bacillus subtilis, Experimental evolution, UV resistance, Growth phase, Stress response
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: Kerstin Kopp
Deposited On:11 Oct 2011 10:30
Last Modified:07 Feb 2013 20:09

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