Researchers at Washington University in St. Louis have gained the first detailed insight into the way circadian rhythms govern global gene expression in Cyanothece, a type of cyanobacterium (blue-green algae) known to cycle between photosynthesis during the day and nitrogen fixation at night.
Get the full story...
New insights into why the bug that causes anthrax behaves in the unusual way that it does have come to light thanks to a development under the UK e-Science Programme. Researchers at the North East Regional e-Science Centre have found that the proteins the anthrax bacterium secretes equip it to grow only in an animal host and not in the soil.
Get the full story...
Organisms precisely regulate cell size to ensure that daughter cells have sufficient cellular material to thrive or to create specific cell types: a tiny sperm versus a gargantuan egg for example. In single-celled organisms such as yeast and bacteria, nutrient availability is the primary determinant of cell size. In animal cells, size is controlled in large part by a molecule that senses the blood sugar-dependent hormone insulin.
Get the full story...
Researchers at Rensselaer Polytechnic Institute have discovered a tiny bacterium that could one day transform the way we remove polychlorinated biphenyls (PCBs) from our environment. The organism could be the key to developing methods that help detoxify commercial PCB compounds on site - without the need for dredging.
Read the full story
The food and drink we consume have to pass strict quality controls. Nevertheless, these measures are not always sufficient, given that sometimes certain foodstuffs can still give rise to food poisoning, most often caused by micro-organisms. The Salmonella bacterium is undoubtedly one of the best known of these. At the University of the Basque Country (UPV/EHU) they are developing a new, rapid-detection system (within 24 hours) for Salmonella.
Read the full story
Infection with enteropathogenic E. coli (EPEC) is a major cause of diarrhea in infants and has a high rate of mortality.
Read the full story
Being a member of a large family may not be best for your health. A new study found that family size greatly influenced the development of stomach cancer linked to the bacterium Helicobacter pylori, and younger siblings from large families appeared to be especially vulnerable to the most common type of stomach cancer.
Read the full story
