Featured Research

from universities, journals, and other organizations

'Green genes' in yeast may boost biofuel production by increasing stress tolerance

Date:
December 15, 2010
Source:
Genetics Society of America
Summary:
An effort to increase biofuel production has led scientists to discover genes in yeast that improve their tolerance to ethanol, allowing the production of more ethanol from the same amount of nutrients. A new study shows how genetically altered yeast cells survive higher ethanol concentrations, addressing a bottleneck in the production of ethanol from cellulosic material (nonfood plant sources) in quantities that could compete economically with fossil fuels.

An effort to increase biofuel production has led scientists to discover genes in yeast that improve their tolerance to ethanol, allowing them to produce more ethanol from the same amount of nutrients.

Related Articles


A new study, published in the December 2010 issue of Genetics, shows how genetically altered yeast cells survive higher ethanol concentrations, addressing a bottleneck in the production of ethanol from cellulosic material (nonfood plant sources) in quantities that could make it economically competitive with fossil fuels.

"Our hope is that this research will take us closer to the goal of producing cheap, efficient, and environmentally friendly cellulosic ethanol," said Audrey P. Gasch, Ph.D., a researcher involved in the work and an Assistant Professor of Genetics from the University of Wisconsin-Madison. "At the same time, we've learned a lot about how cells respond to alcohol stress. So the project has been very productive from multiple angles."

To make this discovery, scientists turned to nature, studying how natural strains of the yeast Saccharomyces cerevisiae respond to ethanol treatment. They concluded that many wild strains of yeast respond to ethanol much differently than do traditional laboratory strains. When these wild yeast cells were treated with a low dose of ethanol, they mounted a response to become super-tolerant to high doses. By comparing and contrasting strains with different responses to ethanol, the researchers were able to quickly identify the specific genes responsible for the increased ethanol tolerance. They identified all genes in the yeast genome whose expression was affected when cells responded to ethanol. Comparing the responses of wild strains and a laboratory strain pointed the researchers to genes involved in high ethanol tolerance. The researchers were able to coax super ethanol tolerance in the laboratory strain by increasing expression of these genes.

"A lot of people think yeast is only useful to make beer, wine and bread," said Mark Johnston, Editor-in-Chief of the journal Genetics, "but it is also a key player in making 'green,' sustainable fuel sources part of the world's economy. By genetically priming these organisms to produce more ethanol, Gasch and her team have taken an important step away from fossil fuels."


Story Source:

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


Journal Reference:

  1. Jeffrey A. Lewis, Isaac M. Elkon, Mick A. McGee, Alan J. Higbee, Audrey P. Gasch. Exploiting natural variation in Saccharomyces cerevisiae to identify genes for increased ethanol resistance. Genetics, 2010; 186: 1197-1205 DOI: 10.1534/genetics.110.121871

Cite This Page:

Genetics Society of America. "'Green genes' in yeast may boost biofuel production by increasing stress tolerance." ScienceDaily. ScienceDaily, 15 December 2010. <www.sciencedaily.com/releases/2010/12/101215113241.htm>.
Genetics Society of America. (2010, December 15). 'Green genes' in yeast may boost biofuel production by increasing stress tolerance. ScienceDaily. Retrieved March 6, 2015 from www.sciencedaily.com/releases/2010/12/101215113241.htm
Genetics Society of America. "'Green genes' in yeast may boost biofuel production by increasing stress tolerance." ScienceDaily. www.sciencedaily.com/releases/2010/12/101215113241.htm (accessed March 6, 2015).

Share This


More From ScienceDaily



More Matter & Energy News

Friday, March 6, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Gas Production Cut on Earthquake Fears

Gas Production Cut on Earthquake Fears

Reuters - Business Video Online (Mar. 5, 2015) The Dutch government has cut production at Europe&apos;s largest gas field in Groningen amid concerns over earthquakes which are damaging local churches. As Amy Pollock reports the decision - largely politically-motivated - could have big economic conseqeunces. Video provided by Reuters
Powered by NewsLook.com
Star Wars-Inspired Prototype Creates Holographic Display

Star Wars-Inspired Prototype Creates Holographic Display

Reuters - Innovations Video Online (Mar. 5, 2015) A prototype holographic display named Leia - after the Star Wars princess who appeared in holographic form asking Obi-Wan Kenobu for help - is demonstrated at the Mobile World Congress in Barcelona. Matthew Stock reports. Video provided by Reuters
Powered by NewsLook.com
IKEA and Samsung Launch Embedded Wireless Charging Range

IKEA and Samsung Launch Embedded Wireless Charging Range

Reuters - Innovations Video Online (Mar. 5, 2015) Samsung and IKEA hope their new embedded wireless charging products, launched at Barcelona&apos;s Mobile World Congress, will tempt consumers eager for plugless power. Jim Drury reports. Video provided by Reuters
Powered by NewsLook.com
Samsung Unveils $30,000 'Dream Doghouse'

Samsung Unveils $30,000 'Dream Doghouse'

Buzz60 (Mar. 5, 2015) On display at the Crufts dog show in England, the &apos;dog kennel of the future&apos; comes with features like a doggie treadmill and Samsung tablet. Mike Janela (@mikejanela) has more. Video provided by Buzz60
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:

Strange & Offbeat Stories


Space & Time

Matter & Energy

Computers & Math

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