Featured Research

from universities, journals, and other organizations

Adapting to change? Remember the good, forget the bad!

Date:
March 31, 2010
Source:
Society for General Microbiology
Summary:
It's not easy being a bacterium and constantly having to adapt to whatever your environment throws at you. Bacteria rely on their "memories" to fine-tune their ability to sense food and danger.

It's not easy being a bacterium and constantly having to adapt to whatever your environment throws at you. Dr Robert Endres explains how bacteria rely on their 'memories' to fine-tune their ability to sense food and danger, in his talk at the Society for General Microbiology's spring meeting in Edinburgh.

Dr Endres and his team at Imperial College London developed a mathematical model to explain the dynamics of chemotaxis -- the mechanism bacteria use to detect and respond to changes in their environment. The group tagged the surface molecules of Escherichia coli that act as 'antennas' with fluorescent labels. Tracking these labels allowed them to detect the speed at which the bacteria respond and eventually adapt to change.

The researchers found that E. coli adapts to potentially toxic molecules much more quickly than to beneficial molecules such as nutrients. "This makes sense since, when bacteria find themselves in unfavourable conditions, cells 'tumble' and randomly find a new direction for swimming -- which is hopefully one that provides a quick escape!" said Dr Endres. "This kind of knowledge could potentially help us understand how pathogenic bacteria respond in the face of a host immune attack."

Bacteria such as E. coli are sensitive to even tiny changes in levels of chemicals around them. After altering their motility in response to these changes, cells must then return to their 'normal' swimming patterns. To adapt quickly, they must effectively 'forget' the initial stimulus soon after responding to it. Conversely, bacteria that 'remember' the stimulus continue to display altered behaviour patterns and are slower to adapt.


Story Source:

The above story is based on materials provided by Society for General Microbiology. Note: Materials may be edited for content and length.


Cite This Page:

Society for General Microbiology. "Adapting to change? Remember the good, forget the bad!." ScienceDaily. ScienceDaily, 31 March 2010. <www.sciencedaily.com/releases/2010/03/100330210944.htm>.
Society for General Microbiology. (2010, March 31). Adapting to change? Remember the good, forget the bad!. ScienceDaily. Retrieved August 21, 2014 from www.sciencedaily.com/releases/2010/03/100330210944.htm
Society for General Microbiology. "Adapting to change? Remember the good, forget the bad!." ScienceDaily. www.sciencedaily.com/releases/2010/03/100330210944.htm (accessed August 21, 2014).

Share This




More Plants & Animals News

Thursday, August 21, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Possible Ebola Patient in Isolation at California Hospital

Possible Ebola Patient in Isolation at California Hospital

Reuters - US Online Video (Aug. 20, 2014) — A patient who may have been exposed to the Ebola virus is in isolation at the Kaiser Permanente South Sacramento Medical Center. Linda So reports. Video provided by Reuters
Powered by NewsLook.com
Flower Power! Dandelions Make Car Tires?

Flower Power! Dandelions Make Car Tires?

Reuters - Business Video Online (Aug. 20, 2014) — Forget rolling on rubber, could car drivers soon be traveling on tires made from dandelions? Teams of scientists are racing to breed a type of the yellow flower whose taproot has a milky fluid with tire-grade rubber particles in it. As Joanna Partridge reports, global tire makers are investing millions in research into a new tire source. Video provided by Reuters
Powered by NewsLook.com
Unsustainable Elephant Poaching Killed 100K In 3 Years

Unsustainable Elephant Poaching Killed 100K In 3 Years

Newsy (Aug. 20, 2014) — Poachers have killed 100,000 elephants between 2010 and 2012, as the booming ivory trade takes its toll on the animals in Africa. Video provided by Newsy
Powered by NewsLook.com
Awesome New Camouflage Sheet Was Inspired By Octopus Skin

Awesome New Camouflage Sheet Was Inspired By Octopus Skin

Newsy (Aug. 19, 2014) — Scientists have developed a new device that mimics the way octopuses blend in with their surroundings to hide from dangerous predators. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins