Navigation Links
'Green genes' in yeast may boost biofuel production by increasing stress tolerance
Date:12/15/2010

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. This study, published in the December 2010 issue of Genetics (http://www.genetics.org), 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."


'/>"/>

Contact: Tracey DePellegrin Connelly
td2p@andrew.cmu.edu
412-268-1812
Genetics Society of America
Source:Eurekalert

Related biology news :

1. MU scientists go green with gold, distribute environmentally friendly nanoparticles
2. Carbon dioxide scrubber captures greenhouse gases
3. Green coffee-growing practices buffer climate-change impacts
4. Greenhouse gas auction revenues can help cut Md. electric use significantly, says study
5. Green tea may delay onset of type 1 diabetes
6. Potent greenhouse gas more prevalent in atmosphere than previously assumed
7. What is really happening to the Greenland icecap?
8. A green future for scrap iron
9. Expert recommends town councils to design low-allergy impact green spaces
10. Parasite-resistant peppers green alternatives to chemical pesticides
11. MIT analysis shows how cap-and-trade plans can cut greenhouse emissions
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/20/2017)... HANOVER, Germany , March 20, 2017 At ... Hamburg -based biometrics manufacturer DERMALOG. The Chancellor came to the ... Japan is this year,s CeBIT partner country. At the largest ... important biometrics in use: fingerprint, face and iris recognition as well as ... ...
(Date:3/13/2017)... 2017 Future of security: Biometric Face Matching software  ... ... DERMALOGs Face Matching enables to match face pictures against each other or ... individuals. (PRNewsFoto/Dermalog Identification Systems) ... "Face Matching" is the fastest software for biometric Face Matching on the market. ...
(Date:3/7/2017)... Brandwatch , the leading social intelligence company, today announces that ... uncover insights to support its reporting, help direct future campaigns, and ... youth charity will be using Brandwatch Analytics social listening and analytics ... of the topics and issues that are a priority for its ... "Until recently ...
Breaking Biology News(10 mins):
(Date:3/28/2017)... Durham, NC (PRWEB) , ... March 28, 2017 ... ... unwanted side effects and diminished effectiveness over time. A recent study published in ... treat PD by stimulating subventricular zone (SVZ) stem cells to produce more neural ...
(Date:3/28/2017)... , ... March 28, 2017 ... ... launch its brand-new, fully-certified hygienic SWB805 MultiMountTM weigh modules. These weigh modules ... and certified by National Sanitation Foundation (NSF). , As fully integrated weighing ...
(Date:3/28/2017)... Research Triangle Park, NC (PRWEB) , ... March ... ... drug development company engaged in the development of a new orally administered treatment ... Company’s Advisory Board. , CEO John Didsbury states, “As we seek to uniquely ...
(Date:3/27/2017)... WARREN, N.J. , March 27, 2017 Roka ... providing advanced testing solutions for the detection of foodborne pathogens, ... at the Sidoti & Company Spring 2017 Convention on March ... the New York Marriott Marquis. About Roka ... ...
Breaking Biology Technology: