Saturday, September 17, 2011

ScienceDaily: Biotechnology News

ScienceDaily: Biotechnology News

Are genes our destiny? Scientists discover 'hidden' code in DNA evolves more rapidly than genetic code

Posted: 16 Sep 2011 12:24 PM PDT

A 'hidden' code linked to the DNA of plants allows them to develop and pass down new biological traits far more rapidly than previously thought, according to new findings.

Previously unknown ocean bacteria lead scientists to entirely new theories

Posted: 16 Sep 2011 08:41 AM PDT

Earth's most successful bacteria are found in the oceans and belong to the group SAR11. Researchers have now provide an explanation for their success and at the same time call into question generally accepted theories about these bacteria. In their analysis they have also identified a rare and hitherto unknown relative of mitochondria, the power stations inside cells.

Temperature controls the genetic message

Posted: 16 Sep 2011 06:29 AM PDT

Alternative splicing, the mechanism enabling a gen to encode different proteins, according to the cell's needs, still holds many secrets. It has transformed the initial theory of one gen, one protein, but how it is controlled remains poorly understood.

Antibacterial effect of phenolic compounds from peat moss and the polysaccharide chitosan

Posted: 16 Sep 2011 06:21 AM PDT

The polysaccharide (sugar substance) chitosan has a documented antibacterial effect. New research shows that this antibacterial activity varies according to the chemical composition of the chitosan. The work demonstrates how chitosan can impede the growth of different kinds of bacteria - including bacteria that cause food poisoning - and provides new insight into the way the substance works. However, the study also shows that phenolic compounds from peat moss have little potential as bacteriostatic agents.
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