Latest Dictyostelium discoideum Stories

2010-05-27 16:42:27

Rice researchers find first to starve in slime mold thrive at others' expense Rice University evolutionary biologists reported in a paper published this week that the first cells to starve in a slime mold seem to have an advantage that not only helps them survive to reproduce, but also pushes those that keep on eating into sacrificing themselves for the common good. The paper by Rice graduate student Jennie Kuzdzal-Fick and her mentors, David Queller and Joan Strassmann, Rice's Harry C. and...

2009-10-01 14:48:30

Cheaters may prosper in the short term, but over time they seem doomed to fail, at least in the microscopic world of amoebas where natural selection favors the noble. But why? Shouldn't "survival of the fittest" give the sneaky cheaters an edge? Not necessarily, as it turns out amoebas that cooperate for the benefit of all "“ and even die for the cause "“ bring their own genetic weapons to the fight. Researchers from Rice University and the Baylor College of Medicine (BCM) are...

2009-07-28 11:09:46

Repeated stress signals made in cells with metabolism-associated disease encourage the growth of invading bacteriaMitochondrial diseases disrupt the power generating machinery within cells and increase a person's susceptibility to bacterial infection, particularly in the lungs or respiratory tract. A new study published in Disease Models & Mechanisms (DMM), shows that infection with the pneumonia causing bacteria Legionella, is facilitated by an increased amount of a signaling protein...

2009-03-12 09:00:00

A Rice University study of microbes from a Houston-area cow pasture has confirmed once again that everything is bigger in Texas, even the single-celled stuff. The tests revealed the first-ever report of a large, natural colony of amoebae clones -- a Texas-sized expanse measuring at least 12 meters across. The research is available online and featured on cover of the March issue of Molecular Ecology. Some large organisms like aspen trees and sea anemones are well-known for growing in large...

2007-08-08 06:24:31

HOUSTON -- Finding an immune system in the social amoeba (Dictyostelium discoideum) is not only surprising but it also may prove a clue as to what is necessary for an organism to become multicellular, said the Baylor College of Medicine researcher who led the research that appears today in the journal Science. Dictyostelium discoideum usually exists as a single-celled organism. However, when stressed by starvation, the single cells band together to form a slug that can move. Eventually the...

2006-08-15 07:32:20

In times of plenty, the uni-cellular slime mold Dictyostelium discoideum leads a solitary life munching on bacteria littering the forest floor. But these simple creatures can perform heroic developmental acts: when the bacterial food supply dries up, Dictyostelium amebas band together with their neighbors and form a multi-cellular tower designed to save the children. In a forthcoming study in Nature Chemical Biology, investigators at the Salk Institute for Biological Studies and the Medical...

Word of the Day
  • Nautical, the visiting and carousing of sailors in the Greenland ships.
This word is apparently from a confusion of two similar Dutch words: 'mallemerok,' a foolish woman, and 'mallemok,' a name for some persons among the crew of a whaling vessel.