Cellular Response of Shewanella oneidensis to StrontiumStress

The physiology and transcriptome dynamics of the metalion-reducing bacterium Shewanella oneidensis strain MR-1 in response tononradioactive strontium (Sr) exposure were investigated. Studiesindicated that MR-1 was able to grow aerobically in complex medium in thepresence of 180 mMSrCl2 but showed se...

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Published in:Applied and environmental microbiology 2007-03, Vol.72 (1)
Main Authors: Brown, Steven D., Martin, Madhavi, Deshpande, Sameer, Seal,Sudipta, Huang, Katherine, Alm, Eric, Yang, Yunfeng, Wu, Liyou, Yan,Tengfen, Liu, Xueduan, Arkin, Adam, Chourey, Karuna, Zhou, Jizhong, Thompson, Dorothea K.
Format: Article
Language:English
Subjects:
59
Bioremediation Stress Response Transcriptomics
BIOSYNTHESIS
CARBONATES
CHEMICAL ANALYSIS
ENZYMES
GENES
HEAVY METALS
INHIBITION
IRON
MASS SPECTROSCOPY
METABOLISM
MUTANTS
PHYSIOLOGY
PROTEINS
SPECTROSCOPY
STRONTIUM
SULFATES
SULFUR
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Summary:The physiology and transcriptome dynamics of the metalion-reducing bacterium Shewanella oneidensis strain MR-1 in response tononradioactive strontium (Sr) exposure were investigated. Studiesindicated that MR-1 was able to grow aerobically in complex medium in thepresence of 180 mMSrCl2 but showed severe growth inhibition at levelsabove that concentration. Temporal gene expression profiles weregenerated from aerobically grown, mid-exponential-phase MR-1 cellsshocked with 180 mM SrCl2 and analyzed for significant differences inmRNA abundance with reference to data for nonstressed MR-1 cells. Geneswith annotated functions in siderophore biosynthesis and iron transportwere among the most highly induced (>100-fold [P
ISSN:0099-2240
1098-5336