Navigation Links
First-of-a-kind tension wood study broadens biofuels research

OAK RIDGE, Tenn., Oct. 25, 2011 -- Taking a cue from Mother Nature, researchers at the Department of Energy's BioEnergy Science Center have undertaken a first-of-its-kind study of a naturally occurring phenomenon in trees to spur the development of more efficient bioenergy crops.

Tension wood, which forms naturally in hardwood trees in response to bending stress, is known to possess unique features that render it desirable as a bioenergy feedstock. Although individual elements of tension wood have been studied previously, the BESC team is the first to use a comprehensive suite of techniques to systematically characterize tension wood and link the wood's properties to sugar release. Plant sugars, known as cellulose, are fermented into alcohol for use as biofuel.

"There has been no integrated study of tension stress response that relates the molecular and biochemical properties of the wood to the amount of sugar that is released," said Oak Ridge National Laboratory's Udaya Kalluri, a co-author on the study.

The work, published in Energy & Environmental Science, describes tension wood properties including an increased number of woody cells, thicker cell walls, more crystalline forms of cellulose and lower lignin levels, all of which are desired in a biofuel crop.

"Tension wood in poplar trees has a special type of cell wall that is of interest because it is composed of more than 90 percent cellulose, whereas wood is normally composed of 40 to 55 percent cellulose," Kalluri said. "If you increase the cellulose in your feedstock material, then you can potentially extract more sugars as the quality of the wood has changed. Our study confirms this phenomenon."

The study's cohesive approach also provides a new perspective on the natural plant barriers that prevent the release of sugars necessary for biofuel production, a trait scientists term as recalcitrance.

"Recalcitrance of plants is ultimately a reflection of a series of integrated plant cell walls, components, structures and how they are put together," said co-author Arthur Ragauskas of Georgia Institute of Technology. "This paper illustrates that you need to use a holistic, integrated approach to study the totality of recalcitrance."

Using the current study as a model, the researchers are extending their investigation of tension wood down to the molecular level and hope to eventually unearth the genetic basis behind its desirable physical features. Although tension wood itself is not considered to be a viable feedstock option, insight gleaned from studying its unique physical and molecular characteristics could be used to design and select more suitably tailored bioenergy crops.

"This study exemplifies how the integrated model of BESC can bring together such unique research expertise," said BESC director Paul Gilna. "The experimental design in itself is reflective of the multidisciplinary nature of a DOE Bioenergy Research Center."

The research team also includes Georgia Institute of Technology's Marcus Foston, Chris Hubbell, Reichel Sameul, Seokwon Jung and Hu Fan; National Renewable Energy Laboratory's Robert Sykes, Shi-You Ding, Yining Zeng, Erica Gjersing and Mark Davis, and ORNL's Sara Jawdy and Gerald Tuskan.

BESC is one of three DOE Bioenergy Research Centers established by the DOE's Office of Science in 2007. The centers support multidisciplinary, multi-institutional research teams pursuing the fundamental scientific breakthroughs needed to make production of cellulosic biofuels, or biofuels from nonfood plant fiber, cost-effective on a national scale.


Contact: Morgan McCorkle
DOE/Oak Ridge National Laboratory

Related biology news :

1. Protein is potential new treatment target for adult pulmonary hypertension
2. Buck Institute and Biotica to investigate polyketides in extension of healthy lifespan
3. International study identifies new gene targets for hypertension treatment
4. Differences in cell response could explain higher rates of hypertension in African-Americans
5. Whats behind hypertension?
6. Dr. Larissa Shimoda to discuss mechanisms of hypoxic pulmonary hypertension
7. Nationwide Childrens Hospital awarded $11.5 million contract extension for biospecimen banking
8. Finger-trap tension stabilizes cells chromosome-separating machinery
9. LSUHSC study IDs proteins regulating water retention in salt-sensitive hypertension
10. Ben-Gurion University of the Negev researchers identify risks of hypertension in young adults
11. A possible role for Smurf1 in pulmonary arterial hypertension
Post Your Comments:
Related Image:
First-of-a-kind tension wood study broadens biofuels research
(Date:11/17/2015)... , Nov. 17, 2015  Vigilant Solutions announces ... joined its Board of Directors. --> ... after recently retiring from the partnership at TPG Capital, ... companies with over $140 Billion in revenue.  He founded ... across all the TPG companies, from 1997 to 2013.  ...
(Date:11/12/2015)... BOSTON , Nov. 12, 2015  A golden ... for Duchenne muscular dystrophy (DMD) has provided a new ... Boston Children,s Hospital, the Broad Institute of MIT and ... Brazil . Cell, ... some dogs "escape" the disease,s effects. The Boston Children,s ...
(Date:11/11/2015)... 2015   MedNet Solutions , an innovative SaaS-based eClinical ... is pleased to announce that it will be a Sponsor ... event, to be held November 17-19 in Hamburg ... demonstrations of iMedNet , MedNet,s easy-to-use, proven ... has been able to deliver time and cost savings ...
Breaking Biology News(10 mins):
(Date:11/30/2015)... -- Champions Oncology, Inc. (CSBR), engaged in the development of ... and use of oncology drugs, today announced that ... at the LD MICRO Investor Conference on Wednesday, December ... conference, held at the Luxe Sunset Bel Air Hotel ... feature 200 small/micro-cap companies and is expected to host ...
(Date:11/30/2015)...  HUYA Bioscience International, the leader in accelerating global ... today announced it has signed a Memorandum of Understanding ... collaboration between KDDF and HUYA with the ultimate goal ... for the global market. China,s ... innovative preclinical and clinical stage compounds. The company advances ...
(Date:11/30/2015)... Germany , November 30, 2015 ... Vienna, Austria to be held December 1-4, ... in Vienna, Austria to be ... owned subsidiary of Vycor Medical, Inc. ("Vycor") (OTCQB: VYCO), announced ... Therapy Suite at the 3rd European Congress of NeuroRehabilitation ...
(Date:11/30/2015)... and PETACH TIKVAH, Israel , Nov. 30, ... BCLI ), a leading developer of adult stem cell technologies ... Cell Therapeutics Ltd., has been awarded an additional grant of ... the Chief Scientist (OCS). This grant, the second this year, ... activities to approximately $1.8 million (approximately NIS7 million).  ...
Breaking Biology Technology: