Document Detail

The silicon layer supports acid resistance of Bacillus cereus spores.
MedLine Citation:
PMID:  19880606     Owner:  NLM     Status:  MEDLINE    
Silicon (Si) is considered to be a "quasiessential" element for most living organisms. However, silicate uptake in bacteria and its physiological functions have remained obscure. We observed that Si is deposited in a spore coat layer of nanometer-sized particles in Bacillus cereus and that the Si layer enhances acid resistance. The novel acid resistance of the spore mediated by Si encapsulation was also observed in other Bacillus strains, representing a general adaptation enhancing survival under acidic conditions.
Ryuichi Hirota; Yumehiro Hata; Takeshi Ikeda; Takenori Ishida; Akio Kuroda
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of bacteriology     Volume:  192     ISSN:  1098-5530     ISO Abbreviation:  J. Bacteriol.     Publication Date:  2010 Jan 
Date Detail:
Created Date:  2009-12-16     Completed Date:  2010-01-05     Revised Date:  2010-09-28    
Medline Journal Info:
Nlm Unique ID:  2985120R     Medline TA:  J Bacteriol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  111-6     Citation Subset:  IM    
Department of Molecular Biotechnology, Graduate School of Advanced Sciences of Matter, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8530, Japan.
Data Bank Information
Bank Name/Acc. No.:
GENBANK/GQ855295;  GQ855296
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MeSH Terms
Acids / pharmacology*
Bacillus cereus / drug effects*,  genetics,  metabolism*,  radiation effects,  ultrastructure
Gene Expression Regulation, Bacterial / drug effects,  radiation effects
Hydrochloric Acid / pharmacology
Hydrofluoric Acid / pharmacology
Microscopy, Electron, Scanning
Molecular Sequence Data
RNA, Ribosomal, 16S / genetics
Silicon / metabolism*,  physiology*
Sodium Hydroxide / pharmacology
Spores, Bacterial / drug effects*,  genetics,  metabolism*,  radiation effects,  ultrastructure
Ultraviolet Rays / adverse effects
Reg. No./Substance:
0/Acids; 0/RNA, Ribosomal, 16S; 1310-73-2/Sodium Hydroxide; 7440-21-3/Silicon; 7647-01-0/Hydrochloric Acid; 7664-39-3/Hydrofluoric Acid

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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