Navigation Links
CSHL researchers identify gene that helps plant cells keep communication channels open
Date:2/17/2009

Plant cells communicate via microscopic channels called plasmodesmata that are embedded in their cell walls. For the stem cells in the plants' growing tips, called "meristems," the plasmodesmata are lifelines, allowing nutrients and genetic instructions for growth to flow in.

Developmental and environmental cues trigger changes in the structure of the tiny channels, thereby altering the flow of traffic through them. The genes and molecular pathways of the plant cell that respond to these cues, and the mechanisms that control channel structure and cell-to-cell traffic are, however, mostly unknown.

To identify these genes, a team of researchers led by Professor David Jackson, Ph.D., at Cold Spring Harbor Laboratory (CSHL), devised a method to find mutant cells whose channels were blocked to traffic. The experiments have revealed a gene called GAT1 (pronounced gate-one), which instructs cells to produce an enzyme found only in meristems, the stem-cell rich tip of the plant where new growth takes place. The enzyme improves the flow of traffic through plasmodesmata by acting as an antioxidant, a type of molecule that relieves cellular stress.

"This discovery is one of the first examples of using genetics to understand how plant cells communicate through plasmodesmata," says Jackson, whose lab at CSHL is devoted to the study of plant genetics. "Our study suggests a mechanism through which plant cells can adjust trafficking in these channels through the various stages of development." The team's findings will be published in the Feb 17th issue of Proceedings of the National Academy of Sciences.

GAT1 keeps callose at bay

As plants develop, growth signals and environmental cues such as damage or stress trigger overproduction of a substance called callose. Although callose is a normal structural component of cell walls in plants, excess callose accumulates and forms obstructive clumps that plug the plasmodesmata
'/>"/>

Contact: Hema Bashyam
bashyam@cshl.edu
516-367-6822
Cold Spring Harbor Laboratory
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Researchers identify proteins involved in new neurodegenerative syndrome
2. Texas researchers and educators head for Antarctica
3. MGH researchers describe new way to identify, evolve novel enzymes
4. University of Pennsylvania researchers develop formula to gauge risk of disease clusters
5. U of MN researchers discover noninvasive diagnostic tool for brain diseases
6. U of Minnesota researchers discover noninvasive diagnostic tool for brain diseases
7. Researchers discover new strategies for antibiotic resistance
8. Researchers find new taste in fruit flies: carbonated water
9. Binghamton University researchers investigate evolving malaria resistance
10. UIC researchers find promising new targets for antibiotics
11. Researchers develop simple method to create natural drug products
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/22/2014)... French . NAIROBI ... African soils looming as a major threat to food security ... over the last five years, 1.7 million African farmers in ... million hectares and helped them double or even triple crop ... Revolution in Africa (AGRA) focuses on intensive efforts initiated five ...
(Date:8/22/2014)... release is available in German . ... substances, in PCFs proteins are fixated in a way ... crystals. Next, the HZB and Fudan University researchers are ... as functional materials. Their findings are being published today ... 10.1038/ncomms5634). , Proteins are sensitive molecules. Everyone knows that ...
(Date:8/22/2014)... birds and the bees. But that old expression ... The fertilization process for flowering plants is particularly ... and female reproductive cells. New research from an ... and including Carnegie,s Wolf Frommer, David Ehrhardt, and ... process that guides flowering plant fertilization. It is ...
Breaking Biology News(10 mins):Effort to confront Africa's soil health crisis helps millions of farmers triple yields 2Effort to confront Africa's soil health crisis helps millions of farmers triple yields 3Effort to confront Africa's soil health crisis helps millions of farmers triple yields 4Proteins: New class of materials discovered 2Calcium and reproduction go together 2
... (Nov. 4, 2010) Columbia University Medical Center has ... in Cardiovascular Research, with the 2010 Lewis Katz Visiting ... renowned heart failure expert from University of Texas Southwestern ... winners of the 2010 Lewis Katz Cardiovascular Research Prize ...
... Nov. 4, 2010 BIO-key International, Inc. (OTC Bulletin ... biometric identification solutions, today announced plans to release third ...  In conjunction with the release, BIO-key has scheduled a ... Internet on Thursday, November 11, 2010 at 10:00 a.m. ...
... amount of water flowing in streams and rivers has ... that were assessed in a new nationwide USGS study. ... river ecosystems and loss of native species. ... to date of stream flow alteration," said Bill Werkheiser, ...
Cached Biology News:Columbia University Medical Center announces 2010 Katz Prizes in cardiovascular research 2Columbia University Medical Center announces 2010 Katz Prizes in cardiovascular research 3Columbia University Medical Center announces 2010 Katz Prizes in cardiovascular research 4Columbia University Medical Center announces 2010 Katz Prizes in cardiovascular research 5BIO-key® Announces Third Quarter 2010 Earnings Release and Conference Call Schedule 2Most river flows across the US are altered by land and water management 2
(Date:8/22/2014)... IN (PRWEB) August 22, 2014 The ... community and its members in Alaska that Alaska Governor ... Concurrent Resolution 15, further defining public use of Unmanned ... Systems Task Force. House Bill 255states that it is, ... to images captured by an unmanned aircraft system.” It ...
(Date:8/21/2014)... 21, 2014 DNA vaccine pioneer ... its development of JRC-LAMP-vax, an innovative and safe potential ... IC studies began this month in Hawaii, moving the ... , The Japanese red cedar releases pollen that causes ... Mountain Cedar pollen wreaks similar havoc in Colorado, New ...
(Date:8/21/2014)... (PRWEB) August 21, 2014 His Majesty ... Opening , The Court of His Majesty Willem-Alexander, King ... attend the Grand Opening of POET-DSM Advanced Biofuels’ Project ... Sept. 3. , The King will take part in ... activity, scheduled for 11 a.m.-12:20 p.m. and tour the ...
(Date:8/21/2014)... 21, 2014 OTC Markets Group ... a biotechnology company, on its approval to list ... on OTCQX®, the best marketplace for established U.S. ... Logo - http://photos.prnewswire.com/prnh/20110118/MM31963LOGO ... execution of its growth strategy and achievement of ...
Breaking Biology Technology:State of Alaska Signs Unmanned Aircraft Systems Bill 2Relief for Allergy Sufferers Finally in Sight: Immunomic Therapeutics Closes in on Treatment for Hay Fever in Japan, U.S. 2Relief for Allergy Sufferers Finally in Sight: Immunomic Therapeutics Closes in on Treatment for Hay Fever in Japan, U.S. 3Relief for Allergy Sufferers Finally in Sight: Immunomic Therapeutics Closes in on Treatment for Hay Fever in Japan, U.S. 4His Majesty Willem-Alexander, King of the Netherlands, to Attend Project LIBERTY opening 2His Majesty Willem-Alexander, King of the Netherlands, to Attend Project LIBERTY opening 3OTC Markets Group Congratulates Immune Pharmaceuticals on NASDAQ Listing 2
... CALGARY, Feb. 11 /PRNewswire-FirstCall/ - SemBioSys Genetics ... of therapeutic,proteins for metabolic and cardiovascular diseases, today ... of the Company, will be,presenting a corporate update ... on Wednesday, February 13, 2008 at the Waldorf ...
... Fla., Feb. 11 Further to Phlo,Corporation,s ("Phlo"") (OTC: ... Roll Out to Metropolitan New York City Account,Base," an ... distributor in Metropolitan New York City has sold and ... key account base,as part of such roll out. AQISS(TM) ...
... Feb. 11 Santaris Pharma, the,Danish biopharmaceutical company ... McCullagh, President and Chief Executive,Officer, will be presenting ... for,2008 at the Biotechnology Industry Organisation,s 10th Annual ... February 11th at 12:30 pm,US Eastern Standard Time ...
Cached Biology Technology:SemBioSys to present at the 10th Annual BIO CEO & Investor Conference 2Phlo Affiliate Reports Progress in New York City Metropolitan Area Roll-Out 2Santaris Pharma to Present at 10th Annual Biotechnology Industry Organisation CEO & Investor Conference - February 11th, 2008 2
MagSi uniform silica particles coated with a carboxyl group containing polymer, covalently attached to the bead surface....
MAb to Vasopressin Preservative: NaN3...
Mouse monoclonal [1C6/2] to Rad17 ( Abpromise for all tested applications). entrezGeneID: 5884 SwissProtID: Q9UPF5...
... glycoprotein. distributed in colon and rectum, ... lung and salivary gland tissues. ... and MUC2. Epitope: Tandem repeats ... MUC3 tandem repeat peptide Positive ...
Biology Products: