Wednesday, March 05, 2003

Technical shit
New Nature article measures the movement of chloroplast DNA into the cell nucleus:
Thus, we provide a quantitative estimate of one transposition event in about 16,000 pollen grains for the frequency of transfer of cpDNA to the nucleus. In addition to its evident role in organellar evolution, transposition of cpDNA to the nucleus in tobacco occurs at a rate that must have significant consequences for existing nuclear genes.
Also, "Nature this week finds itself in the unenviable (and unprecedented) position of formally retracting seven papers".[history]

Using gene silencing to eradicate pests in New Scientist, which also reports:

The MRSA bacterium, or methicillin-resistant Staphylococcus aureus, can be resistant to many antibiotics. It has long been a serious problem in hospitals and nursing homes, where it infects the wounds of patients weakened by disease or injury. But it now appears that a new strain is emerging that spreads through skin contact and can even infect healthy people.


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