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:6/22/2016)... June 22, 2016 On Monday, the Department ... industry to share solutions for the Biometric Exit Program. ... and Border Protection (CBP), explains that CBP intends to ... the United States , in order ... defeat imposters. Logo - http://photos.prnewswire.com/prnh/20160622/382209LOGO ...
(Date:6/9/2016)... in attendance control systems is proud to announce the introduction of fingerprint attendance control ... right employees are actually signing in, and to even control the opening of doors. ... ... ... Photo - ...
(Date:6/2/2016)... 2016   The Weather Company , an IBM Business ... industry-first capability in which consumers will be able to interact ... questions via voice or text and receive relevant information about ... Marketers have long sought an advertising solution that can ... personal, relevant and valuable; and can scale across millions of ...
Breaking Biology News(10 mins):
(Date:6/27/2016)... Ginkgo Bioworks , a leading organism design company ... as one of the World Economic Forum,s Technology ... companies. Ginkgo Bioworks is engineering biology to manufacture ... the nutrition, health and consumer goods sectors. The ... Fortune 500 companies to design microbes for their ...
(Date:6/24/2016)... 24, 2016 Epic Sciences unveiled a ... susceptible to PARP inhibitors by targeting homologous recombination ... The new test has already been incorporated into ... cancer types. Over 230 clinical trials ... pathways, including PARP, ATM, ATR, DNA-PK and WEE-1. ...
(Date:6/24/2016)... ... June 24, 2016 , ... Researchers at the Universita Politecnica delle ... people with peritoneal or pleural mesothelioma. Their findings are the subject of a new ... , Diagnostic biomarkers are signposts in the blood, lung fluid or tissue of mesothelioma ...
(Date:6/23/2016)... ... June 23, 2016 , ... UAS LifeSciences, one of ... their brand, UP4™ Probiotics, into Target stores nationwide. The company, which has been ... Target to its list of well-respected retailers. This list includes such fine stores ...
Breaking Biology Technology: