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)... 30, 2017 Trends, opportunities and forecast in ... by technology (fingerprint, AFIS, iris recognition, facial recognition, hand ... by end use industry (government and law enforcement, commercial ... banking, and others), and by region ( North ... Asia Pacific , and the Rest of ...
(Date:3/27/2017)... 27, 2017  Catholic Health Services (CHS) has ... Society (HIMSS) Analytics for achieving Stage 6 on ... . In addition, CHS previously earned a place ... an electronic medical record (EMR). "HIMSS ... of EMR usage in an outpatient setting.  This ...
(Date:3/23/2017)... report "Gesture Recognition and Touchless Sensing Market by Technology (Touch-based and Touchless), Product ... by MarketsandMarkets, the market is expected to be worth USD 18.98 billion by ... Continue Reading ... ...      (Logo: http://photos.prnewswire.com/prnh/20160303/792302) ...
Breaking Biology News(10 mins):
(Date:10/11/2017)... ... October 11, 2017 , ... ComplianceOnline’s Medical Device Summit is back ... 8th June 2018 in San Francisco, CA. The Summit brings together current and former ... CEOs, board directors and government officials from around the world to address key issues ...
(Date:10/11/2017)... ... October 11, 2017 , ... A new study ... in frozen and fresh in vitro fertilization (IVF) transfer cycles. The ... IVF success. , After comparing the results from the fresh and frozen transfer ...
(Date:10/10/2017)... Poway, California (PRWEB) , ... October 10, 2017 , ... ... afternoon speaking at his local San Diego Rotary Club. The event ... San Diego, CA and had 300+ attendees. Dr. Harman, DVM, MPVM was joined ...
(Date:10/9/2017)... DIEGO , Oct. 9, 2017  BioTech ... biological mechanism by which its ProCell stem cell ... critical limb ischemia.  The Company, demonstrated that treatment ... amount of limbs saved as compared to standard ... the molecule HGF resulted in reduction of therapeutic ...
Breaking Biology Technology: