Ultrastructural Changes Associated with Activation and Germination of Bacillus cereus T Spores
AUTOR(ES)
Hashimoto, Tadayo
RESUMO
The ultrastructural changes occurring during defined stages of the transition of dormant Bacillus cereus T spores into heat-sensitive forms were investigated. The coat of the heat-activated spores displayed conspicuous striations across its middle layer. Electron microscopy of thin sections of heat-activated spores revealed the presence in the spore of a layer consisting of hexagonally oriented subunits. It was demonstrated that the subcoat region, but not the cortex, disappears rapidly during germination of B. cereus T spores. The fibrous structures apparently associated with the spore coat remain virtually unchanged during the entire course of activation and germination.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=248363Documentos Relacionados
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