Cohnella thermotolerans

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Cohnella thermotolerans
Scientific classification
Domain:
Bacteria
Phylum:
Firmicutes
Class:
Bacilli
Order:
Bacillales
Family:
Paenibacillaceae
Genus:
Cohnella
Species:
Cohnella thermotolerans

Kämpfer et al. 2006

Cohnella thermotolerans is the type species of the bacterial genus Cohnella . It is Gram-positive, rod-shaped and endospore-forming, with type strain CCUG 47242T (=CIP 108492T =DSM 17683T). [1]

Endospore protective structure formed by bacteria

An endospore is a dormant, tough, and non-reproductive structure produced by certain bacteria from the phylum Firmicutes. The name "endospore" is suggestive of a spore or seed-like form, but it is not a true spore. It is a stripped-down, dormant form to which the bacterium can reduce itself. Endospore formation is usually triggered by a lack of nutrients, and usually occurs in gram-positive bacteria. In endospore formation, the bacterium divides within its cell wall, and one side then engulfs the other. Endospores enable bacteria to lie dormant for extended periods, even centuries. There are many reports of spores remaining viable over 10,000 years, and revival of spores millions of years old has been claimed. There is one report of viable spores of Bacillus marismortui in salt crystals approximately 250 million years old. When the environment becomes more favorable, the endospore can reactivate itself to the vegetative state. Most types of bacteria cannot change to the endospore form. Examples of bacteria that can form endospores include Bacillus and Clostridium.

Contents

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References

  1. ↑ Kampfer, P. (2006). "Cohnella thermotolerans gen. nov., sp. nov., and classification of 'Paenibacillus hongkongensis' as Cohnella hongkongensis sp. nov". International Journal of Systematic and Evolutionary Microbiology. 56 (4): 781–786. doi:10.1099/ijs.0.63985-0. ISSN   1466-5026. PMID   16585694.

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