Navigation Links
New evidence in plants shows micro-RNA can move
Date:4/21/2010

trol precisely how much water and nutrients they take in.

The researchers now show that Short-root moves from cells in the plant's inner vasculature out into the waterproofing endodermis that surrounds it to activate Scarecrow. Together, those two transcription factors (genes that control other genes) activate microRNAs, known as MIR165a and 166b. Those microRNAs then head back toward the vascular cells, meeting and degrading another transcription factor (called Phabulosa) as well as other regulatory factors along the way.

"Dr. Benfey and his colleagues have shown how two modes of gene regulation work together across cellular borders to ensure the proper patterning of plant root tissues," said Susan Haynes of the NIH's National Institute of General Medical Sciences, which partially funded the study. "This study provides important insight into how cells communicate positional information to orchestrate the complex process of tissue and organ development."

"Now we know that microRNAs can and do move to form gradients in the context of plant development," Benfey added. "It adds a new dimension to gene regulation."

According to Benfey, history suggests this kind of two-way communication involving microRNAs in the developing root is likely to be a more general phenomenon. "Just about everything in biology that once seemed particular sooner or later proves to be more general," he said.

He said there's also reason to think that the specific regulatory interactions they've uncovered were key in the evolutionary transition from single-celled algae to land plants.

"Formation of vascular tissue with a surrounding endodermal layer that acts as waterproofing was a key milestone in the evolution of land plants," Benfey said. "Without a tube to conduct water, you can't grow a tree or a sunflower."


'/>"/>

Contact: Kendall Morgan
kendall.morgan@duke.edu
919-684-2850
Duke University
Source:Eurekalert

Page: 1 2

Related biology news :

1. A private bandwidth for communication in bats: Evidence from insular horseshoe bats
2. Comet probes reveal evidence of origin of life, scientists claim
3. Evidence of a relationship between swimming babies and infections
4. Researchers find evidence linking stress caused by the Sept. 11 disaster with low birth weights
5. Fossil record supports evidence of impending mass extinction
6. New evidence for female control in reproduction
7. RAND study finds evidence disease management programs
8. CWRU School of Medicine has evidence vaccine against malaria will reduce disease
9. There is powerful evidence of evolution in human DNA
10. Scientific evidence supporting evolution continues to grow
11. No convincing evidence for decline in tropical forests
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:11/21/2014)... Strict laws against distracted driving and the ... American and European automotive sector towards gesture recognition technologies. ... that are intuitive and able to retrieve information with ... New analysis from Frost & Sullivan,s Strategic ... Europe and North America ...
(Date:11/18/2014)... , Nov. 17, 2014   ... EMC collaborate to develop The Partners Data Lake, ... The Partners Data Lake will allow researcher and ... diagnostics, treatment and the lives of patients ... and clinical activities across the Partners system, breaking ...
(Date:11/12/2014)... , Nov. 12, 2014 Crossmatch™, a leading ... its U.are.U ® fingerprint readers have been deployed ... Central Mexico . The bakery chain ... eliminate payroll issues caused by employees clocking in for ... U.are.U fingerprint readers, Montparnasse relied on paper timecards and ...
Breaking Biology News(10 mins):Gesture Recognition Intensifies with the Rise of In-car Smartphone Integration, Says Frost & Sullivan 2Gesture Recognition Intensifies with the Rise of In-car Smartphone Integration, Says Frost & Sullivan 3Gesture Recognition Intensifies with the Rise of In-car Smartphone Integration, Says Frost & Sullivan 4Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 2Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 3Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 4Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 5Montparnasse Pasteleria Achieves Time and Attendance Transparency with Crossmatch U.are.U Fingerprint Readers 2
... international distribution, of smartTOUCH(TM) consumer products into South Africa ... ... markets., JERICHO, N.Y., Aug. 18 bioMETRX Inc., (OTC,Bulletin Board: ... of Sequiam Corporation have been transferred to bioMETRX,S.A. at the request ...
... PASADENA, Calif.-- The National Science Foundation,s Expeditions in Computing ... Project, a collaborative effort by researchers at the California ... establish a fundamental approach to the design of complex ... computer science. The focus of their study, ...
... The Woods Institute for the Environment has awarded five ... Stanford that help solve the world,s urgent demands for ... survival and well-being, yet in poor countries more than ... supplies, and more than 2 billion lack basic sanitation ...
Cached Biology News:bioMETRX, Inc. Acquires Assets of Sequiam Biometrics (Pty) Ltd. 2bioMETRX, Inc. Acquires Assets of Sequiam Biometrics (Pty) Ltd. 3Caltech researchers awarded $10M for molecular programming project 2New planning grants to fund research on freshwater issues 2New planning grants to fund research on freshwater issues 3
(Date:12/17/2014)... Achim Noack has been named global vice president ... position, Noack will assist Jerry Stoller, CEO and president ... and supervise global marketing management and implementation of new ... and experience in the crop protection industry,” says Jerry ... thinking will be a great asset for Stoller Group, ...
(Date:12/17/2014)... IN (PRWEB) December 17, 2014 ... Laboratory Excellence following its most recent COLA inspection. ... by COLA, a national healthcare accreditation organization. Accreditation ... standards of quality in day-to-day operations, demonstrate continued ... pass a rigorous on-site laboratory survey. ...
(Date:12/17/2014)... 2014  United Therapeutics Corporation (NASDAQ: UTHR ... as changes to Martine Rothblatt , Ph.D,s compensation ... United Therapeutics announced the promotion of Roger ... and David Zaccardelli , Pharm.D. to Executive Vice ... promotions, Dr. Rothblatt,s title will change from Chairman and ...
(Date:12/15/2014)... METTLER TOLEDO is pleased to announce ... V19 with PVM technology , is now available. ... measurement tool continuously captures high-resolution images under a ... automatically prepares a report pairing the most relevant ... changes. This compelling blend of high resolution images ...
Breaking Biology Technology:Achim Noack Joins Stoller Group as Global Vice President of Marketing and Administration 2Xeno Diagnostics Receives 3rd Award for Laboratory Excellence 2United Therapeutics Corporation Announces Executive Promotions and CEO Compensation Change 2United Therapeutics Corporation Announces Executive Promotions and CEO Compensation Change 3United Therapeutics Corporation Announces Executive Promotions and CEO Compensation Change 4New Real-Time In Situ Probe-Based Video Microscope from METTLER TOLEDO 2
... - Patient enrollment to begin in fourth quarter -, ... announced that, together with its collaborator Merck Serono, it,has ... (FDA) on a,Special Protocol Assessment (SPA) to conduct a ... the treatment of patients with,lupus nephritis. This is one ...
... opened a virtual bazaar, called PAZAR, which allows ... individually managed ,boutiques, (data collections). According to research ... Biology, customers can access data without any charge ... ,superstores, that aggregate data of similar types. , ...
... Campione, Ph.D., Joins Solazyme Executive Team, SOUTH ... company pioneering biofuels and health/wellness products from,microalgae, has ... of senior,vice president of business development. Campione ... agreements and contracts with major companies. These deals ...
Cached Biology Technology:ZymoGenetics and Merck Serono Receive FDA Special Protocol Assessment for Atacicept Pivotal Study in Lupus Nephritis 2ZymoGenetics and Merck Serono Receive FDA Special Protocol Assessment for Atacicept Pivotal Study in Lupus Nephritis 3Free shopping in a virtual bazaar of gene regulation data 2Solazyme Announces New Senior Vice President of Business Development 2
MHC. Sections include: the isolation and functional properties of antigen-presenting cells analysis of MHC class II endocytosis and peptide turnover analysis of signalling via MHC class II molecu...
... PAGE Cleavable ICAT Reagent ... Protein ID and Quantitation ... Electrophoresis (PAGE), isotope-coded affinity ... technology to facilitate the ...
Supplemental reagent for annexin V assay....
Antibody Purification Specificity: Antibody Purification ...
Biology Products: