Navigation Links
Discovery may pave way to genetically enhanced biofuel crops
Date:12/20/2012

Best known for its ability to transform simmering pots of sugared fruit into marmalades and jams, pectin is a major constituent of plant cell walls and the middle lamella, the sticky layer that glues neighboring plant cells together. Pectin imparts strength and elasticity to the plant and forms a protective barrier against the environment. Several different kinds of pectic compounds combine to form pectin. The relative proportion of each of these depends on the plant species, location within the plant, and environment. Pectic compounds decorated with β-1,4-galactan (a chain of six-carbon sugars) are of considerable interest to the biofuels industry, because six-carbon sugars are readily converted into ethanol (biofuel) by fermenting microorganisms. A new study published in The Plant Cell reveals a novel enzyme involved in the production of β-1,4-galactans. This enzyme may be used to engineer plants with more desirable attributes for conversion to biofuel.

The major enzymes that catalyze pectin production are hard to pin down. Close to 70 enzymes are predicted to underlie pectin synthesis in plants; only about three of these have been identified definitively. Knowledge of these enzymes could be used to boost the production of pectins with desirable characteristics.

A team of researchers at the Joint BioEnergy Institute, University of California, Berkeley, and Technical University of Denmark set out to identify the enzymes that catalyze the production of β-1,4-galactan. They screened a database of enzymes for galactosyltransferases, the enzymes that link six-carbon galactose sugars into a chain. They found a family of proteins, named GT92, that are present in some animals and all plants sequenced to date. The authors found that mutations in each of the three genes encoding the GT92 proteins in the model plant Arabidopsis led to a reduction in β-1,4-galactan, whereas producing more of one of these proteins led to a 50% increase in β-1,4-galactan levels. In many cases, modifying the composition of plant cell wall components leads to alterations in growth or stature. Strikingly, all of the plant lines overproducing this important six-carbon sugar appeared to be healthy. Biochemical tests of the enzymatic properties of purified Arabidopsis GT92 protein supported the hypothesis that GT92 proteins are important enzymes for β-1,4-galactan synthesis in plants. This means that crops engineered to produce increased levels of GT92 proteins might contain more easily fermentable sugars, thereby potentially boosting the efficiency of biofuel production.

According to lead scientist Henrik Scheller, "Bioenergy crops with high β-1,4-galactan content would have significant advantages for the biofuels industry and we now have the knowledge to specifically increase β-1,4-galactan content in the biomass of cell walls. This breakthrough was made possible by a collaboration involving members of the Feedstocks Division at JBEI and our collaborators in Denmark. We are very excited about this result and look forward to testing it in a bioenergy crop such as switchgrass or poplar trees".


'/>"/>

Contact: Kathy R. Munkvold
kmunkvold@aspb.org
301-296-0914
American Society of Plant Biologists
Source:Eurekalert  

Related biology news :

1. LSUHSC research discovery provides therapeutic target for ALS
2. Discovery of pathway leading to depression reveals new drug targets
3. Discovery of 100 million-year-old regions of DNA shows short cut to crop science advances
4. Discovery of molecular pathway of Alzheimers disease reveals new drug targets
5. The Journal of Biological Chemistry commemorates an important 1987 discovery
6. GW Research chosen as paper of the week for blood coagulation discovery
7. NIH-funded genetic sequencing tool speeds drug discovery, disease diagnostics
8. Discovery of reprogramming signature may help further stem cell-based regenerative medicine research
9. King Richard III search in new phase after discovery has potential to rewrite history
10. New discovery related to gum disease
11. Cant smell anything? This discovery may give you hope
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Discovery may pave way to genetically enhanced biofuel crops
(Date:4/11/2017)... 11, 2017 Crossmatch®, a globally-recognized leader ... today announced that it has been awarded a ... Activity (IARPA) to develop next-generation Presentation Attack Detection ... "Innovation has been a driving force within Crossmatch ... allow us to innovate and develop new technologies ...
(Date:4/6/2017)... 6, 2017 Forecasts by Product ... Readers, by End-Use (Transportation & Logistics, Government & Public ... & Fossil Generation Facility, Nuclear Power), Industrial, Retail, Business ... Are you looking for a definitive report on ... ...
(Date:4/4/2017)... April 4, 2017   EyeLock LLC , a ... the United States Patent and Trademark Office (USPTO) has ... the linking of an iris image with a face ... represents the company,s 45 th issued patent. ... very timely given the multi-modal biometric capabilities that have ...
Breaking Biology News(10 mins):
(Date:10/9/2017)... (PRWEB) , ... October 09, 2017 , ... At its ... Dr. Christopher Stubbs, a professor in Harvard University’s Departments of Physics and Astronomy, has ... was a member of the winning team for the 2015 Breakthrough Prize in Fundamental ...
(Date:10/9/2017)... Texas (PRWEB) , ... October ... ... study published on October 5, 2017, in the medical journal, Epilepsia, Brain ... with the gold standard, video EEG, in detecting generalized tonic-clonic seizures (GTCS) ...
(Date:10/7/2017)... ... October 06, 2017 , ... ... ProxiMeta™ Hi-C metagenome deconvolution product, featuring the first commercially available Hi-C kit. ... to perform Hi-C metagenome deconvolution using their own facilities, supplementing the company’s ...
(Date:10/6/2017)... ... 2017 , ... The HealthTech Venture Network (HTVN) is proud ... annual Conference where founders, investors, innovative practitioners and collaborators are invited to a ... early stage digital health and med tech companies. , This day-long event will ...
Breaking Biology Technology: