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 April 20, 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 April 20, 2014).

Share This



More Plants & Animals News

Sunday, April 20, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Vermont Goat Meat Gives Refugees Taste of Home

Vermont Goat Meat Gives Refugees Taste of Home

AP (Apr. 18, 2014) Dairy farmers and ethnic groups in Vermont are both benefiting from a unique collaborative effort that's feeding a growing need for fresh and affordable goat meat. (April 18) Video provided by AP
Powered by NewsLook.com
Man Claims He Found Loch Ness Monster With... Apple Maps?

Man Claims He Found Loch Ness Monster With... Apple Maps?

Newsy (Apr. 18, 2014) Andy Dixon showed the Daily Mail a screenshot of what he believes to be the mythical beast swimming just below the lake's surface. Video provided by Newsy
Powered by NewsLook.com
First Ever 'Female Penis' Discovered In Animal Kingdom

First Ever 'Female Penis' Discovered In Animal Kingdom

Newsy (Apr. 18, 2014) Not only are these newly discovered bugs' sex organs reversed, but they also mate for up to 70 hours. Video provided by Newsy
Powered by NewsLook.com
Little Progress Made In Fighting Food Poisoning, CDC Says

Little Progress Made In Fighting Food Poisoning, CDC Says

Newsy (Apr. 18, 2014) A new report shows rates of two foodborne infections increased in the U.S. in recent years, while salmonella actually dropped 9 percent. 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