Navigation Links
Plants display 'molecular amnesia'
Date:12/2/2008

ated. These are the genes carried by transposons, or "jumping genes." Transposons are mutagens, genes that can modify their host cell in different ways, and lead to a predisposition to cancer, for example.

The researchers' experiments with corn technically known as "maize" suggest the propensity to maintain epigenetic states can vary depending on the position of the transposons within the genome.

Many organisms, from worms to humans to plants, have learned to tame transposons by epigentically "silencing" them: if they can't express their genes they can't jump. If they can't jump for long enough, their DNA sequence slowly accumulates errors, and they become molecular fossils. Most transposons in most organisms are silenced in this way, but some remain quite active.

In previous studies from the laboratory of two of the article's authors, UC Berkeley professors Damon Lisch and Michael Freeling, with the support of the National Science Foundation at UC Berkeley, epigenetic silencing was triggered in maize. Once triggered, the maize plant "remembers," and keeps the transposon "silenced" generation after generation, even after the trigger is lost.

"However, we have found that at some positions in the genome, this is not the case. At these positions, although the trigger works fine, and the transposon is silenced, once the trigger is lost, the transposon reawakens," said Jaswinder Singh, a professor in the Plant Sciences Department at McGill University, and lead author of the new article. The study, "A Position Effect on the Heritability of Epigenetic Silencing," was published in October in the journal PLoS Genetics.

This "molecular amnesia" has never before been documented in plants and no one has seen it associated with a particular position in the genome of any species before. These data suggest the epigenetic landscape of plant genomes may be more subtle and interesting than previously thought, with the ability
'/>"/>

Contact: Mark Shainblum
mark.shainblum@mcgill.ca
514-398-2189
McGill University
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Layered approach may yield stronger, more successful bone implants
2. Clever plants chat over their own network
3. Plants can be used to study how and why people respond differently to drugs
4. Book on weeds and invasive plants discusses how to manage them using ecological approaches
5. A greenhouse in order to study the impact of climate change on plants
6. Agent that triggers immune response in plants is uncovered
7. Scientists ramp up ability of poplar plants to disarm toxic pollutants
8. A new baseline of invasive plants in Isabela
9. Hungry microbes share out the carbon in the roots of plants
10. Scientists warn that species extinction could reduce productivity of plants on Earth by half
11. Cell transplants may improve severe urinary incontinence
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/17/2014)... NEW YORK , Dec. 15, 2014 /PRNewswire-USNewswire/ ... a Good Clinical Practices (GCP) audit to confirm ... Administration (FDA) regulations. This accomplishment enables HITLAB to ... trials utilizing the highest principles for patient safety ... to improve global healthcare access, quality, and delivery ...
(Date:12/15/2014)... Research and Markets ( http://www.researchandmarkets.com/research/87pph8/global_facial ... "Global Facial Recognition Market 2015-2019" report to ... Facial recognition is a technology ... system measures the overall facial feature of a ... the distance between eyes. Facial recognition is used ...
(Date:12/11/2014)... Dec. 10, 2014  Data Sciences International (DSI), ... released a new series of digital telemetry implants ... researchers. M series, part of the PhysioTel™ Digital ... best possible physiologic data when incorporating functional endpoints ... endpoints to toxicology studies has evolved from short ...
Breaking Biology News(10 mins):HITLAB Completes GCP Audit for FDA Smart Device & App Compliance 2Global Facial Recognition Market 2015-2019: Key Vendors are 3M Cogent, Cognitec Systems, NEC and Safran Group 2Global Facial Recognition Market 2015-2019: Key Vendors are 3M Cogent, Cognitec Systems, NEC and Safran Group 3New telemetry implants expected to change how large animal toxicology studies are conducted 2
... and management have not affected all socioeconomic groups equally, as ... awareness and outcomes. This year, the American Association ... Science of Cancer Health Disparities in Racial/Ethnic Minorities and the ... Fla. Findings presented at this year,s meeting will ...
... 2010) -- A new optical imaging technique described in ... is published by the American Institute of Physics, holds ... performed to treat patients with a partially or completely ... heart. Angioplasty involves threading a slender, balloon-tipped ...
... These days people usually don,t die from a heart attack. ... patients eventually succumb to congestive heart failure, the most common ... now offer hope for achieving what the body can,t do: ... Washington have built a scaffold that supports the growth and ...
Cached Biology News:Optical imaging technique for angioplasty 2A strategy to fix a broken heart 2A strategy to fix a broken heart 3
(Date:12/17/2014)... Based on the revenues gained ... market is dominated by four major players contributing ... These players include GE Healthcare (U.K.), Siemens AG ... , Full Report Copy at http://www.marketsandmarkets.com/Market-Reports/surgical-imaging-market-210534462.html ... be attributed to its strong product portfolio, which ...
(Date:12/17/2014)... 17, 2014 Ipsen Biopharmaceuticals, Inc., ... ADR: IPSEY), today announced that Somatuline® ... Somatuline®) was approved by the U.S. Food and ... neuroendocrine tumors (GEP-NETs) in adult patients with unresectable, ... disease to improve progression-free survival (PFS). , “The ...
(Date:12/17/2014)... Indianapolis, IN (PRWEB) December 17, 2014 ... for Laboratory Excellence following its most recent COLA ... Accreditation by COLA, a national healthcare accreditation organization. ... rigid standards of quality in day-to-day operations, demonstrate ... and pass a rigorous on-site laboratory survey. ...
(Date:12/17/2014)... -- Vermillion, Inc. (NASDAQ: VRML ), a bio-analytic ... next step in its expanded strategy to rebuild the ... naming of current Chief Operating Officer, Valerie Palmieri ... Chairman of the Board and CEO James LaFrance ... are effective January 1, 2015. "Jim and ...
Breaking Biology Technology:Global Refurbished Surgical Imaging Market by Product & Application is Estimated to Reach $1.25 Billion by 2019 - New Research Report by MarketsandMarkets 2Global Refurbished Surgical Imaging Market by Product & Application is Estimated to Reach $1.25 Billion by 2019 - New Research Report by MarketsandMarkets 3Global Refurbished Surgical Imaging Market by Product & Application is Estimated to Reach $1.25 Billion by 2019 - New Research Report by MarketsandMarkets 4Ipsen Announces the FDA Approval of Somatuline® Depot® (lanreotide) Injection for the Treatment of Gastroenteropancreatic Neuroendocrine Tumors 2Ipsen Announces the FDA Approval of Somatuline® Depot® (lanreotide) Injection for the Treatment of Gastroenteropancreatic Neuroendocrine Tumors 3Ipsen Announces the FDA Approval of Somatuline® Depot® (lanreotide) Injection for the Treatment of Gastroenteropancreatic Neuroendocrine Tumors 4Ipsen Announces the FDA Approval of Somatuline® Depot® (lanreotide) Injection for the Treatment of Gastroenteropancreatic Neuroendocrine Tumors 5Ipsen Announces the FDA Approval of Somatuline® Depot® (lanreotide) Injection for the Treatment of Gastroenteropancreatic Neuroendocrine Tumors 6Ipsen Announces the FDA Approval of Somatuline® Depot® (lanreotide) Injection for the Treatment of Gastroenteropancreatic Neuroendocrine Tumors 7Ipsen Announces the FDA Approval of Somatuline® Depot® (lanreotide) Injection for the Treatment of Gastroenteropancreatic Neuroendocrine Tumors 8Xeno Diagnostics Receives 3rd Award for Laboratory Excellence 2Vermillion Names Valerie Palmieri CEO; James LaFrance to continue as Chairman of Board 2Vermillion Names Valerie Palmieri CEO; James LaFrance to continue as Chairman of Board 3Vermillion Names Valerie Palmieri CEO; James LaFrance to continue as Chairman of Board 4
... - Revised Code Demonstrates Strong Commitment to Ethical Information ... ... Pharmaceutical Companies -, ROCKLAND, Mass., July 10 ... will fully implement, the revised,and strengthened PhRMA Code on Interactions ...
... TRENTON, N.J., July 10 Archi-Tech Systems, ... reporting solutions,today announced DART(TM) PromoTrack, a new ... pharmaceutical marketing campaigns and,prescriber promotions. Archi-Tech has ... specific needs of pharmaceutical marketers, seamlessly,integrating disparate ...
... Mixed-Pedigree Pups Can Now Bark Up Family Tree with DNA Testing ... ... tree has never been easier with new cutting-edge DNA testing for mixed-pedigree ... specialty retailer., , , , ,Beginning Tuesday, July 15, PETCO customers will ...
Cached Biology Technology:EMD Serono to Adopt Revised and Strengthened PhRMA Code 2EMD Serono to Adopt Revised and Strengthened PhRMA Code 3EMD Serono to Adopt Revised and Strengthened PhRMA Code 4Pharmaceutical Marketing Done Right: Archi-Tech Systems Unveils Version of Proven Analytics Solution for Campaign Management 2PETCO Adds Canine Heritage Breed Test to its Innovative Assortment 2PETCO Adds Canine Heritage Breed Test to its Innovative Assortment 3PETCO Adds Canine Heritage Breed Test to its Innovative Assortment 4
... agarose is used for second-dimension SDS-PAGE ... in place in PROTEAN Plus cells. ... to allow monitoring of electrophoresis runs. ... agarose in 1x Tris, glycine, SDS, ...
The stirbar is used in the buffer tank of the Trans-Blot Plus cell to maintain uniform conductivity and temperature during electrophoretic transfer. Dimensions are 3.5 x 0.5 in....
Criterion staining and blotting trays are plastic trays designed for staining one or two Criterion gels or performing western blot detection. The trays have a working capacity of up to 500 ml. Suppli...
... provides complete solutions for high-throughput ... 96-, 384-, and independent 8- ... single or dual arm configurations, ... speed and flexibility for nucleic ...
Biology Products: