Environmental Genomics - Thats the end of the book ! Now,...

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That s the end of the book !!! Now, one bonus topic .
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Environmental genomics reveals a single- species ecosystem deep within earth. Science, 322, 275-278 (Oct. 10, 2008).
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What is environmental genomics? Take an environmental sample, extract DNA and sequence it. DNA sequences (such as those encoding ribosomal RNA genes) allow species to be classified among their closest relatives.
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Mponeng gold mine, South Africa.
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Environmental genomics in the gold mine. In this case, the environmental sample was 5600 liters of water from fractures in rock, at a depth of 2.8 km. Sequencing of environmental DNA showed that only a single species occupied this habitat. A single-species habitat had never been observed before.
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Candidatus Desulforudis audaxviator (Bold traveler). In Jules Verne’s “Journey to the Center of the Earth”, the explorers find an inscription “Descende, audax viator, et terrestre centrum attinges”, which means “Descend, bold traveler, and you will attain the center of the earth”.
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Full genome of Bold Traveler was sequenced. Bold Traveler is a bacterium with 2157 genes. This is enough genes to live independently.
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Classification of audaxviator, based on DNA sequencing: Bacterium, similar to bacteria isolated form heating systems biofilms in Denmark.
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Bold Traveler is an endolith ; lives in water trapped in rock pores. I found an image of endoliths in Wikipedia (this is not Bold Traveler).
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The habitat of the Bold Traveler. 60 degrees C, no O
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Environmental Genomics - Thats the end of the book ! Now,...

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