Navigation Links
Researchers find nature's shut-off switch for cellulose production
Date:12/17/2008

WEST LAFAYETTE, Ind. - Purdue University researchers found a mechanism that naturally shuts down cellulose production in plants, and learning how to keep that switch turned on may be key to enhancing biomass production for plant-based biofuels.

Nicholas Carpita, a professor of botany and plant pathology, said that small-interfering RNAs (siRNAs) play a normal role in plant development by shutting off genes involved in primary cell wall growth in order to begin development of thicker, secondary cell walls.

"These small RNAs were known to play a role in fending off disease-causing pathogens, but we are only now beginning to understand their involvement in normal plant development," he said.

Carpita's research team reported its findings in Monday's (Dec. 15) early online issue of the Proceedings of the National Academy of Sciences.

"If we can learn to interfere with the down-regulation of cellulose synthesis, then plants may be able to produce more cellulose, which is key to biofuels production," Carpita said.

Mick Held, a postdoctoral researcher in Carpita's lab, virologist Steve Scofield, a U.S. Department of Agriculture research scientist and adjunct assistant professor of agronomy at Purdue, and Carpita made the discovery in barley after introducing a virus as a way to "silence" specific genes and study their functions. The researchers noticed that the virus had more effect then anticipated.

"The virus hijacked a whole suite of genes, and when we compared the targeted plant to our control plants we found that the small RNAs were responsible and already in the controls even without adding the virus," Held said.

Carpita said this let researchers see that the siRNAs - among other things - regulate and shut down primary cell wall development to begin secondary wall growth.

"These secondary stages result in characteristics such as tough rinds of corn stalks, vascular elements to conduct water and fibers for strength," he said.

The researchers said that delaying or preventing the shutdown of both primary and secondary cellulose production might enhance total plant biomass.

"Most biofuel researchers believe that cellulose utilization offers the best path to sustainable ethanol production," Scofield said. "Our work uncovered a previously unknown mechanism that suggests a way to increase the amount of cellulose produced in plants."


'/>"/>

Contact: Beth Forbes
forbes@purdue.edu
765-494-2722
Purdue University
Source:Eurekalert  

Related biology news :

1. Researchers compile molecular manual for 100s of inherited diseases
2. Pitt researchers create non-toxic clean-up method for potentially toxic nano materials
3. Researchers identify new anti-tumor gene
4. UAF researchers to present at AGU press briefing
5. Researchers create new class of fluorescent dyes to detect reactive oxygen species in vivo
6. GUMC researchers find gene function lost in melanoma and glioblastoma
7. Pitt, NETL researchers report molecular chain reaction thought to be impossible
8. MIT researchers explain mystery of gravity fingers
9. UC San Diego researchers use metagene portraits to reveal distinct stages of kidney formation
10. CSHL researchers map changing epigenetic modifications that enable transposons to run amok
11. UNH researchers track lobster migrations to improve population estimates
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Researchers find nature's shut-off switch for cellulose production
(Date:4/26/2016)... and LONDON , ... Finacle, part of EdgeVerve Systems, a product subsidiary ... Onegini today announced a partnership to integrate the ...      (Logo: http://photos.prnewswire.com/prnh/20151104/283829LOGO ) ... provide their customers enhanced security to access and ...
(Date:4/19/2016)... DUBAI , UAE, April 20, 2016 ... can be implemented as a compact web-based "all-in-one" system ... in the biometric fingerprint reader or the door interface ... requirements of modern access control systems. The minimal dimensions ... the ID readers into the building installations offer considerable ...
(Date:4/15/2016)... 2016 Research and Markets has ... Market 2016-2020,"  report to their offering.  , ... ,The global gait biometrics market is expected to ... period 2016-2020. Gait analysis generates multiple ... used to compute factors that are not or ...
Breaking Biology News(10 mins):
(Date:4/29/2016)... CA (PRWEB) , ... April 29, 2016 , ... Summit ... (NSCF) to support the development of a patient-specific stem cell therapy for the treatment ... the lab of Dr. Jeanne Loring at The Scripps Research Institute in San Diego, ...
(Date:4/29/2016)... , April 29, 2016 Elekta ... latest update to its industry-leading treatment planning software, is ... Monaco version 5.11 provides significant ... attain calculation speeds up to four times faster than ... With the industry,s gold standard Monte Carlo ...
(Date:4/28/2016)... NEW YORK , April 28, 2016 /PRNewswire/ ... biotechnology acceleration company reports the Company,s CEO  was ... capital titled Accelerators Enter When VCs Fear To ... Life Science Leader magazine is an ... work for everything from emerging biotechs to Big ...
(Date:4/28/2016)... ... April 28, 2016 , ... Next week on May ... its first-in-class technologies for tissue stem cell counting and expansion to gene-editing scientists ... Reprogramming & CRISPR-based Genome Engineering in Burlington, Massachusetts. , The attention of most ...
Breaking Biology Technology: