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:12/24/2014)... its launch in December 2014, the 1U™ app ... trying to remember their usernames and passwords through replacing the ... To assist people who have struggled to remember usernames and ... and focuses on redefining identity, announced today that it is ...
(Date:12/19/2014)... 2014 Research and Markets ( http://www.researchandmarkets.com/research/86ncd6/micro_market ) has ... America Perimeter Security Systems Market" report to their offering. ... North American perimeter security market is estimated to grow at ... U.S. market holds a larger share in this market, ...
(Date:12/17/2014)... SM announced today its completion of a Good ... current U.S. Food and Drug Administration (FDA) regulations. This ... smart phone application trials utilizing the highest principles for ... determined to improve global healthcare access, quality, and delivery ...
Breaking Biology News(10 mins):1U Offers Best Solution to the Username / Password Dilemma: For FREE! 21U Offers Best Solution to the Username / Password Dilemma: For FREE! 3Micro Market Monitor: North America Perimeter Security Systems Market (Intrusion Detection Sensor, Video Surveillance, Communication/Alarm and Notification, Access Control System) 2Micro Market Monitor: North America Perimeter Security Systems Market (Intrusion Detection Sensor, Video Surveillance, Communication/Alarm and Notification, Access Control System) 3HITLAB Completes GCP Audit for FDA Smart Device & App Compliance 2
... Twenty years after its introduction, gene therapy still holds great ... viruses such as human immunodeficiency syndrome (HIV). But scientists have ... system that is capable of delivering therapeutic payloads to specific ... researchers in the USC Viterbi School of Engineering may be ...
... can safely drive while talking on their cell phones. Vanderbilt ... when it comes to handling two things at once, your ... it that with our incredibly complex and sophisticated brain, with ... a thousand times a second, we still have such a ...
... the National Institutes of Health have developed an experimental ... infected with cytomegalovirus (CMV)—a common virus that can also ... who were infected in early fetal life. , Estimates ... each year at about 40,000, and there is no ...
Cached Biology News:Can engineered immune cells stop AIDS? 2Can engineered immune cells stop AIDS? 3Neural bottleneck found that thwarts multi-tasking 2Neural bottleneck found that thwarts multi-tasking 3Experimental vaccine given during pregnancy reduces stillbirths from common virus 2Experimental vaccine given during pregnancy reduces stillbirths from common virus 3
(Date:1/22/2015)... zFlo Motion , a US leader in ... product from a new partner. STT-Systems has developed ... 15 years, with offerings in the optical-motion capture, 3D scanning, ... (inertial measurement unit), iSen, is opening eyes around the world. ...
(Date:1/22/2015)... (PRWEB) January 22, 2015 Diagenode, ... such as the Bioruptor® and complete solutions for ... for chromatin immunoprecipitation, alleviating the need for manual ... controls needed for ChIP of histones or transcription ...
(Date:1/22/2015)... , a precision medicine software company that has developed a ... genomic, imaging and other biomedical data in research and clinical ... CEO of Aspera, an IBM Company, to its board as ... "We are pleased to welcome Michelle to ...
(Date:12/24/2014)... DALLAS and NEW YORK , ... a biopharmaceutical company advancing patient care in critical areas, announced ... of common stock, and warrants to purchase up to an ... of $4.00 per share and $.01 per warrant.  The warrants ...
Breaking Biology Technology:3D Motion Capture Just Got Easy 2Diagenode Launches Unique Semi-Automated Solution for Chromatin Immunoprecipitation 2GenoSpace Expands Board with Appointment of Michelle Munson 2PlasmaTech Biopharmaceuticals, Inc. Announces Closing of Public Offering 2PlasmaTech Biopharmaceuticals, Inc. Announces Closing of Public Offering 3
... 2011 The Plasma Protein Therapeutics Association (PPTA) ... to Orphan Drugs Act ( H.R. 2672 ) and ... drugs and therapies that treat patients with rare diseases by ... who rely on plasma protein therapies are coping with a ...
... NOVATO, Calif., July 28, 2011 BioMarin Pharmaceutical Inc. (Nasdaq: ... GALNS Phase 1/2 extension study (MOR-100) in which patients have ... originally enrolled in the initial Phase 1/2 study of GALNS ... (MOR-100).  In the MOR-100 study, patients were treated at a ...
... fight over deficit reform continues to drag on in Washington, ... across the region to fight to save a critical sector ... a victim of short-sighted cuts. "Proposed cuts to ... to seniors, but would require seniors to pay more for ...
Cached Biology Technology:PPTA Praises Legislation That Protects the Treatment of Rare Diseases 2BioMarin Provides Update on GALNS Phase 1/2 Extension Study (MOR-100) 2BioMarin Provides Update on GALNS Phase 1/2 Extension Study (MOR-100) 3BioMarin Provides Update on GALNS Phase 1/2 Extension Study (MOR-100) 4BioMarin Provides Update on GALNS Phase 1/2 Extension Study (MOR-100) 5BioMarin Provides Update on GALNS Phase 1/2 Extension Study (MOR-100) 6Biotech Group Warns Proposed Medicare Cuts Could Hurt Critical Sector of New England Economy 2
...
... a-Amylase is an enzyme that catalyzes ... of maltose, maltotriose, and dextrins. The,level ... the human body is of,clinical significance ... including,pancreatitis and diabetes; plant and microbial ...
... Jouan MSC series of Class II ... conditions and certification to the world's ... ensures that the cabinets cannot be ... Natural lighting, low noise and arm ...
... Fluoroskan Ascent FL is ... and luminometric measurement technologies ... list of advanced features ... Luminoskan Ascent. Fluoroskan Ascent ...
Biology Products: