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The silicon layer supports acid resistance of Bacillus cereus spores.

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.

SUBMITTER: Hirota R

PROVIDER: S-EPMC2798246 | biostudies-literature | 2010 Jan

REPOSITORIES: biostudies-literature

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The silicon layer supports acid resistance of Bacillus cereus spores.

Hirota Ryuichi R Hata Yumehiro Y Ikeda Takeshi T Ishida Takenori T Kuroda Akio A

Journal of bacteriology 20100101 1

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 unde ...[more]

PMID: 19880606

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