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:9/30/2014)... each year, but its deep-blue waters host the ... alien species, including fish, crustaceans, and algae are ... In the open-access journal Frontiers in Marine ... data from a new information system developed by ... of alien species has changed the native biodiversity ...
(Date:9/30/2014)... think of nature as something that we enjoy when we ... Or do we think of ourselves as a part of ... what about a house? , The answers to these ... our actions, our speech and in cultural artifacts. , A ... Washington, the American Indian Center of Chicago and the Menominee ...
(Date:9/30/2014)... captured the popular attention of both children and aquarium ... sold as dehydrated eggs, these tiny brine shrimp readily ... tank of salt water. , Physicists, though, are ... shrimp vertically migrate in large groups in response to ... night and retreating deeper during the day. , Two ...
Breaking Biology News(10 mins):Biodiversity in the Mediterranean is threatened by alien species 2The cultural side of science communication 2Laser-guided sea monkeys show how zooplankton migrations may affect global ocean currents 2
... still images and video, as well as local information ... of Life via new tools that let the public ... collaboration of unprecedented scale. Experts and citizen scientists ... which dedicates a Web page to each known species ...
... , , ... LLC, the image analysis and pattern recognition technology provider, today ... for online signature verification at the tenth International Conference on ... 26 - 29, 2009. Parascript was among 12 participants ...
... An indigenous family living in a mountainous area of ... discover information about genetic mutations associated with acromegaly, a form ... facial features. The information could lead to ... a benign pituitary gland tumor that can be deadly if ...
Cached Biology News:Cool new tools let public contribute to massive interactive online biodiversity encyclopedia 2Cool new tools let public contribute to massive interactive online biodiversity encyclopedia 3Cool new tools let public contribute to massive interactive online biodiversity encyclopedia 4Cool new tools let public contribute to massive interactive online biodiversity encyclopedia 5Cool new tools let public contribute to massive interactive online biodiversity encyclopedia 6Cool new tools let public contribute to massive interactive online biodiversity encyclopedia 7Parascript Technology Wins Online Signature Verification Competition 2Clues to gigantism provided by family in Borneo Mountains 2
(Date:9/30/2014)... WASHINGTON D.C., September 30, 2014 Applying a ... of researchers at Harvard University has demonstrated the ... surface -- work that holds promise for making ... and detailing the sides of next-gen rocket ships ... When light passes through oil in water, it ...
(Date:9/30/2014)... NEW YORK , Sept. 30, 2014 /PRNewswire/ ... Review - 2014 Summary Global Markets ... Review - 2014, provides an overview of the ... focus. This report provides comprehensive information on ... Biotechnology, LLC,s, complete with comparative analysis at various ...
(Date:9/30/2014)... 2014 Nematicide is a type of ... microscopic parasitic roundworms, found in massive quantities virtually ... and animals. Nematicides have tended to be broad-spectrum ... migration through the soil. A single gram of ... With more than 10,000 species classified, they are ...
(Date:9/30/2014)... California (PRWEB) September 30, 2014 ... the level of each type of cholesterol carrier or ... the presence of excessive cholesterol levels in the body, ... precursor condition to heart attack and other cardiovascular disorders. ... worldwide, therefore testing for cholesterol levels on a regular ...
Breaking Biology Technology:Taking thin films to the extreme 2Pacific Northwest Biotechnology, LLC - Product Pipeline Review - 2014 2Pacific Northwest Biotechnology, LLC - Product Pipeline Review - 2014 3Nematicides Market by Types (Fumigants, Organophosphates, Carbamate and Bio-Nematicides), Applications (Agrochemicals, Industrial, and Others), and Geography (North America, Europe, Asia-Pacific & ROW) - Global Trends & Forecasts to 2019 2Surging Diabetic, Obese and Hypertensive Population Drives the Global Cholesterol Testing Market, According to New Report by Global Industry Analysts, Inc. 2Surging Diabetic, Obese and Hypertensive Population Drives the Global Cholesterol Testing Market, According to New Report by Global Industry Analysts, Inc. 3Surging Diabetic, Obese and Hypertensive Population Drives the Global Cholesterol Testing Market, According to New Report by Global Industry Analysts, Inc. 4
... track for Q4 ... Submission, SEATTLE, ... CTIC) announced today that following a,meeting with the U.S. Food and Drug ... support a submission,for a supplemental Biologics License Application (sBLA). The sBLA will,propose ...
... as pH, heat and light will pave the way ... Being developed by a consortium of UK universities, the ... transfer inside chemical reactors. This technology will provide a ... and agrochemical industries. , Professor Yulong Ding of the ...
... Ill., Sept. 19 Abbott (NYSE:,ABT) will announce its ... the market opens., The announcement will be followed ... 8 a.m. Central time (9 a.m. Eastern), and will ... . An archived edition of the call will be,available ...
Cached Biology Technology:FDA Meeting Provides Green Light for Cell Therapeutics Submission of Supplemental Filing for Zevalin(R) Label Expansion 2FDA Meeting Provides Green Light for Cell Therapeutics Submission of Supplemental Filing for Zevalin(R) Label Expansion 3FDA Meeting Provides Green Light for Cell Therapeutics Submission of Supplemental Filing for Zevalin(R) Label Expansion 4FDA Meeting Provides Green Light for Cell Therapeutics Submission of Supplemental Filing for Zevalin(R) Label Expansion 5
... Background Cloning Kit includes the pZErO-1 vector ... coli. The pZErO-1 vector utilizes positive selection ... of the Zeocin resistance gene reduces the ... transformation efficiencies. The kit contains all of ...
NATIVE, ENZYME PORCINE TRYPSIN...
... S-Adenosyl-Homocysteine. S-Adenosyl Homocysteine 100%,S-Adenosyl Methionine ... 0.27%,Homocysteine ... <0.1%,L-Cysteine ... Assay Range: 0.1 ug/ml to ...
... Panomer 9 oligodeoxynucleotides ... are labeled at the ... proprietary Alexa Fluor dyes ... for assessing microarray spot ...
Biology Products: