The Silicon Layer Supports Acid Resistance of Bacillus Cereus Spores

Overview

Journal J Bacteriol

Publisher American Society for Microbiology

Specialty Microbiology

Date 2009 Nov 3

PMID 19880606

Citations 7

Authors

Ryuichi Hirota

Yumehiro Hata

Takeshi Ikeda

Takenori Ishida

Akio Kuroda

Affiliations

Soon will be listed here.

Abstract

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.

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