Insights into the Structure and Protein Composition of Moorella thermoacetica Spores Formed at Different Temperatures.

ABSTRACT: The bacterium Moorella thermoacetica produces the most heat-resistant spores of any spoilage-causing microorganism known in the food industry. Previous work by our group revealed that the resistance of these spores to wet heat and biocides was lower when spores were produced at a lower temperature than the optimal temperature. Here, we used electron microcopy to characterize the ultrastructure of the coat of the spores formed at different sporulation temperatures; we found that spores produced at 55 °C mainly exhibited a lamellar inner coat tightly associated with a diffuse outer coat, while spores produced at 45 °C showed an inner and an outer coat separated by a less electron-dense zone. Moreover, misarranged coat structures were more frequently observed when spores were produced

SUBMITTER: Malleck T 

PROVIDER: S-EPMC8745062 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature