Navigation Links
Protecting the future: How plant stem cells guard against genetic damage
Date:11/16/2009

Scientists at the John Innes Centre in Norwich, UK, have shown how plants can protect themselves against genetic damage caused by environmental stresses. The growing tips of plant roots and shoots have an in-built mechanism that, if it detects damage to the DNA, causes the cell to 'commit suicide' rather than pass on its defective DNA.

Plants have, at the very tips of their roots and shoots, small populations of stem cells, through which they are able to grow and produce new tissue throughout the plant's life. These stem cells are the precursors to producing plant tissues and organs. This means that any defect that arises in the stem cell's genetic code will be passed on and persist irreversibly throughout the life of the plant, which may last thousands of years.

It is therefore critical that there are safeguards that prevent stem cell defects becoming fixed, particularly as the stem cells exist at the growing tips of shoots and roots where they are especially exposed to potentially hazardous environments.

Nick Fulcher and Robert Sablowski, with funding from the Biotechnology and Biological Sciences Research Council (BBSRC), set out to discover what these safeguards could be. By using X-rays and chemicals they were able to induce damage to DNA, and found that stem cells were much more sensitive to DNA damage than other cells. The cells are able to detect the DNA damage, triggering the death of these cells, thus preventing the damaged genetic code becoming fixed in the rest of the plant tissues.

A similar system exists in animal cells, which has been very well investigated, as the failure of this system can lead to cancer. The discovery of a similar, although distinct system in plants is therefore of great interest in the field of plant development, as well as in the efforts of scientists to develop plants better able to cope with environmental stress. Drought, high salinity and the accumulation of hazardous chemicals in the soil are side-effects of a changing climate, so knowledge of how plants cope with theses stresses is of fundamental importance to agricultural science's response to climate change. This is one aim of the research carried out by the John Innes Centre, an institute of the BBSRC.


'/>"/>

Contact: Andrew Chapple
andrew.chapple@bbsrc.ac.uk
44-016-032-51490
Norwich BioScience Institutes
Source:Eurekalert  

Related biology news :

1. Compost can turn agricultural soils into a carbon sink, thus protecting against climate change
2. Fueling ethanol production while protecting water quality
3. Protecting those who heal
4. Research identifies type of vaccine that holds promise in protecting against TB
5. Protecting neurons could halt Alzheimers, Parkinsons diseases
6. NC State takes research lead in protecting Puerto Ricos unique freshwater fisheries
7. Protecting fresh-cut produce
8. Protecting the food crops of the future
9. Protecting cells from their neighbors
10. Strategy outlined for growing bioenergy while protecting wildlife
11. Protecting humans and animals from diseases in wildlife
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Protecting the future: How plant stem cells guard against genetic damage
(Date:3/30/2017)... -- Trends, opportunities and forecast in this market to ... AFIS, iris recognition, facial recognition, hand geometry, vein recognition, ... industry (government and law enforcement, commercial and retail, health ... and by region ( North America , ... , and the Rest of the World) ...
(Date:3/28/2017)... PUNE, India , March 28, 2017 ... (Analog, IP, Biometrics), Hardware (Camera, Monitors, Servers, Storage Devices), ... Maintenance), Vertical, and Region - Global Forecast to 2022", ... 30.37 Billion in 2016 and is projected to reach ... 15.4% between 2017 and 2022. The base year considered ...
(Date:3/24/2017)... 24, 2017 The Controller General of Immigration from ... Abdulla Algeen have received the prestigious international IAIR Award for the ... Continue Reading ... ... Controller Abdulla Algeen (small picture on the right) have received the IAIR ...
Breaking Biology News(10 mins):
(Date:9/25/2017)... , ... September 25, 2017 , ... Throughout the month ... Project Verified label at over 13,000 stores nationwide, and industry expert David Carter is ... Now that Congress has passed the GMO labeling bill, demand for non-GMO foods and ...
(Date:9/25/2017)... , ... September 25, 2017 , ... ... by a third-party auditor, MindFlow Design has been found to provide product ... start-ups or Fortune 500 companies, our clients have a lot at ...
(Date:9/22/2017)... (PRWEB) , ... September 22, 2017 , ... ... colleague Dr. Justin Zalewsky in offering LANAP® and LAPIP™ laser treatments. Drs. Hoge ... True Regeneration™ to patients, a minimally invasive and less painful option that produces ...
(Date:9/21/2017)... ... , ... Dr. Greg Leyer, Chief Scientific Officer of UAS Labs, will be ... at 12:10pm in the Probiotics Resource Center, Mandalay Bay Expo Hall. , “I ... probiotics have shown impressive data in areas outside the gut including heart health, Vitamin ...
Breaking Biology Technology: