Very human need to harden the asphalt road as the main transport infrastructure. The bacteria that live deep in the soil is also needed, but as a source of feed energy. Armed certain enzymes produced body, the bacteria can chew asphalt.
"Asphalt is an extreme environment and hostile as a place to live." Said Jong-Shik Kim of the University of California, Riverside USA. However, the newly discovered microscopic organism's survival in a mixture of natural oils that contain toxic materials, without water, and little oxygen.
Bacteria that live in petroleum waste produced, one of which in the form of methane gas. So, when Kim and colleagues Dave Crowley saw air bubbles emerging from the crude solution, they yakit find unique creatures in it.
They then extract bacterial DNA from the asphalt to study the properties of enzymes and it is amazing. Kim and Crowley initially freeze oily black sludge with a solution of liquid nitrogen and then squashed into a powder. With these techniques, the bacteria easily visible so it can be set aside.
DNA measurement results showed that the bacteria may begin to develop the capacity of 28 thousand years ago. When stuck in mud puddles asphalt at Rancho La Brea, Los Angeles began to develop his body to decompose enzymes oil.
"Perhaps the soil microorganisms trapped on the asphalt." Said Crowley. However, it could be a kind of microorganisms that live in the soil reservoir. The findings, reported in the journal Applied and Environmental Microbiology.
Source: LiveScience.com
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