Subscribe to our free daily newsletters
  Energy News  




Subscribe to our free daily newsletters



BIO FUEL
"Green genes" In Yeast May Boost Biofuel Production By Increasing Stress Tolerance

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.
by Staff Writers
Bethesda MD (SPX) Dec 16, 2010
Research published in the journal GENETICS identifies new genes that improve ethanol tolerance in yeast cells, with the goal of generating higher ethanol concentrations for biofuel production.

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 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."



Share This Article With Planet Earth
del.icio.usdel.icio.us DiggDigg RedditReddit
YahooMyWebYahooMyWeb GoogleGoogle FacebookFacebook



Related Links
Mellon Institute
Bio Fuel Technology and Application News



Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News


BIO FUEL
Seaweed As Biofuel? Metabolic Engineering Makes It A Viable Option
Urbana IL (SPX) Dec 16, 2010
Is red seaweed a viable future biofuel? Now that a University of Illinois metabolic engineer has developed a strain of yeast that can make short work of fermenting galactose, the answer is an unequivocal yes. "When Americans think about biofuel crops, they think of corn, miscanthus, and switchgrass. ln small island or peninsular nations, though, the natural, obvious choice is marine biomas ... read more







BIO FUEL
Xcel Energy And SunEdison Break Ground On Solar Deployment In New Mexico

SunReports Approved By California Solar Initiative's Thermal Program

Kalahari Greentech Tests Gas Turbine

Solopower Offers World's Most Powerful Certified Flexible CIGS Module

BIO FUEL
BIO FUEL
Nordex USA Wins 41MW Order For Iowa Wind Farm

Wind Turbines On Farmland May Benefit Crops

Massive offshore wind proposed for R.I.

Repair And Inspection Services For The Expanding Wind Power Industry

BIO FUEL
EU denies funding for fusion reactor

Transocean rejects responsibility in US oil disaster

Japan eco-fair seeks to reach next generation

Tiny Channels Carry Big Information

BIO FUEL
Algeria pushes to revive energy industry

Who Uses The Most Electricity In Germany

How Can Urban Areas Efficiently Save Energy

Protest halts Dutch power station project

BIO FUEL
Renault-Nissan says electric car battery can be used at home

Chevrolet Volt Propulsion System Named A 'Ward's 10 Best Engine'

Ford To Build Gas-Powered, Electric, Hybrid And Plug-In Hybrid Vehicles In Michigan

BYD And HACLA Launch Electric Vehicle Testing Program

BIO FUEL
Wild seeds seen as world crop 'insurance'

No rice please, we're Indonesians

Forgotten vines help wine makers fight climate change

New Discovery About How Flowering Time Of Plants Can Be Controlled

BIO FUEL
Apple to open Mac App Store on January 6

Japan's Sharp to build LCD lines for smartphones: report

Endeavor Power Launches Endeavor Metals

ThumbDrive inventor out to prove he is no one-hit wonder


The content herein, unless otherwise known to be public domain, are Copyright 1995-2010 - SpaceDaily. AFP and UPI Wire Stories are copyright Agence France-Presse and United Press International. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by SpaceDaily on any Web page published or hosted by SpaceDaily. Privacy Statement