Navigation Links
Different strategies underlie the ecology of microbial invasions

Infectious disease can play a key role in mediating the outcome of competition between rival groups, as seen in the effects of disease-bearing conquistadors in the New World--or, on a much smaller ecological scale, the ability of bacteria to spread their viruses to competing bacteria. In a new study, researchers have compared two different general ways in which bacteria compete with one another, and they have found that each strategy seems to be particularly effective under different ecological circumstances--for example, depending on whether the bacteria are rare invaders or abundant residents. The findings, reported by a group of researchers including Sam P. Brown of the University of Texas at Austin, Cambridge University, and University of Montpellier II, and François Taddei of University of Paris, appear in the October 24th issue of Current Biology.

Bacteria are not always so fortunate as to grow alone in their environment, and they often face competition from other lineages. One widespread solution is to kill these competitors.

In the new work, the researchers explored the relative value to both invading and defensive bacteria of two distinct microbial mechanisms of killing competitors: through the release of chemicals (for example, antibiotics or bacteriocins) and through the release of parasites (for example, bacterial viruses, known as phages). Focusing on the second mechanism in an experimental setting, the researchers showed that even though some of the invading bacteria can be killed by their own phage parasites, upon their death they release a burst of infectious parasites that can kill competitor bacteria. Unlike chemical killing, released parasites trigger an epidemic among susceptible competitors, which become factories producing more parasites. Amplification therefore makes phage carriers able to successfully compete with phage-susceptible bacteria even faster when the carriers are rare, whereas chemical killers can only win in a we ll-mixed environment when chemical carriers are sufficiently abundant. The findings show that the release of chemical toxins is superior as a resident strategy to repel invasions, whereas the release of parasites is superior as a strategy of invasion.
'"/>

Source:Cell Press


Related biology news :

1. Different microarray systems more alike than previously thought
2. New strategies to reduce hospital-aquired infections
3. Preventing a pandemic: Study suggests strategies for containing a flu outbreak
4. Polio vaccination strategies assessed as eradication nears
5. Fitting in: Newly evolved genes adopt a variety of strategies to remain in the gene pool
6. Newly identified mechanism for silencing genes points to possible anti-cancer strategies
7. US control strategies may make flu epidemics worse, UCLA study shows
8. Guardian of the genome protein found to underlie skin tanning
9. Putting ecology back into river restoration
10. Diverse tropical forests defy metabolic ecology models
11. UMaine teams with fishermen to study affects of trawling on seafloor ecology

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:3/22/2016)... India , March 22, 2016 /PRNewswire/ ... market research report "Electronic Sensors Market for Consumer ... Proximity, & Others), Application (Communication & IT, ... Geography - Global Forecast to 2022", published ... industry is expected to reach USD 26.76 ...
(Date:3/18/2016)... LONDON , March 18, 2016 ... Established Suppliers of Biometrics, ICT, Manned & Unmanned Vehicles, Physical ... & security companies in the border security market and ... and Europe has led ... your companies improved success. --> defence & ...
(Date:3/15/2016)... JERUSALEM , March 15, 2016 ... Jerusalem , the technology-transfer company of the Hebrew University, ... developer of remote sensing technology of various human biological ... funding, raising $2.0 million from private investors. ... technology, based on the detection of electromagnetic emissions from ...
Breaking Biology News(10 mins):
(Date:5/3/2016)... , ... May 03, 2016 , ... According to world ... for definitive prostate cancer treatment, patients traditionally had two main treatment options: surgery or ... would be made. , New technology has enabled doctors to administer higher doses ...
(Date:5/2/2016)... , May 2, 2016 Q ... its technology partner Mannin Research Inc. will be attending ... which takes place from May 1-5, 2016 in ... be meeting with its vendors and research partners. The ... development goals and other collaborative opportunities for the MAN-01 ...
(Date:5/2/2016)... CA (PRWEB) , ... May 02, 2016 , ... StarNet ... solutions today announced the addition of three Secure Remote Desktop modules to its flagship ... remote desktops from Linux and Unix servers to the user’s PC over encrypted SSH. ...
(Date:4/29/2016)... Como, Italy (PRWEB) , ... April 30, 2016 , ... ... their extraordinary textile design, the bioLogic team explored how bacterial properties can be applied ... ways of using Natto bacteria, which move in response to humidity change. The team ...
Breaking Biology Technology: