Navigation Links
Max Planck researchers make a breakthrough in plant stem cell research

Totipotent stem cells allow plants to build new organs throughout their whole life. But it has been unclear how hormones and genetic factors work together to prevent plants from having growth that is either stunted, or uncontrolled and tumor-like. Scientists from the Max Planck Institute for Developmental Biology have now uncovered a feedback mechanism, involving a growth-enhancing hormone and a regulatory protein, which controls the number of stem cells the plant produces. (Nature, December 22, 2005). The results are of great importance for all of stem cell research.

All above ground parts of a plant - leaves, stem, flowers, and seeds - ultimately are derived from cells of a small tissue at the tip of the shoot. Biologists call this tissue the "apical meristem", and it contains totipotent stem cells that are active throughout the life of the plant. Unlike the stem cells of animals, which can only produce specific kinds of tissue after the animal is past its embryonic stage, plant stem cells remain their totipotency and, therefore plants can continue growing over many years, developing new organs.

But this ability comes at a price. If the number of meristematic stem cells increases too quickly, then there could be uncontrolled growth, similar to cancer. On the other hand, if the stem cell pool shrinks too quickly, the plant could have stunted growth. In order to stay alive and reproduce, the plant needs to find the right balance in the number of its stem cells. Two regulatory mechanisms were found to be important for this process. The first involves growth-promoting hormones like auxin and cytokinin, known already for more than half a century. The second involves genetic factors, which were discovered at the University of Tübingen, Germany about a decade ago. Here it was shown that a gene called WUSCHEL has a key influence on how many cells in the apical meristem actually stay stem cells. However, until now, it was unclear how hormones and regulatory
'"/>

Source:Max-Planck-Gesellschaft


Page: 1 2 3

Related biology news :

1. NYU researchers simulate molecular biological clock
2. Vital step in cellular migration described by UCSD medical researchers
3. ASU researchers finds novel chemistry at work to provide parrots vibrant red colors
4. UCSD researchers maintain stem cells without contaminated animal feeder layers
5. Why do insects stop breathing? To avoid damage from too much oxygen, say researchers
6. New protein discovered by Hebrew University researchers
7. First real-time view of developing neurons reveals surprises, say Stanford researchers
8. Agilent Technologies releases automated literature search tool for biology researchers
9. Self-assembled nano-sized probes allow Penn researchers to see tumors through flesh and skin
10. Yale researchers identify molecule for detecting parasitic infection in humans
11. US life expectancy about to decline, researchers say
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Max Planck researchers make breakthrough plant stem cell research

(Date:10/28/2014)... differences in moving activity in a novel environment ... angling, according to an experimental study completed at ... Game and Fisheries Research Institute. The study used ... and authentic angling trials to analyse if behaviours ... reared in traditional and enriched hatchery rearing environments. ...
(Date:10/28/2014)... and citrus fruits and juices are associated with a ... research from the University of East Anglia (UEA). ... foods containing flavonols and flavanones (both subclasses of dietary ... cancer, the fifth-leading cause of cancer death among women. ... of 171,940 women aged between 25 and 55 for ...
(Date:10/27/2014)... are an indigenous species of the West Antarctic Peninsula ... Earth. Since 1950, the average annual temperature in the ... and 6 degrees Celsius during winter. , As ... dry, polar system to a warmer, sub-polar system with ... a connection between local weather conditions and the weight ...
Breaking Biology News(10 mins):Fish 'personality' linked to vulnerability to angling 2Tea and citrus products could lower ovarian cancer risk, new UEA research finds 2University of Delaware study connects penguin chick weights to local weather conditions 2University of Delaware study connects penguin chick weights to local weather conditions 3
... they used fluorescent molecules to "tag" DNA and monitor a ... rearranging genetic material in some types of cells. ... light on how DNA loops form, but also might be ... shuffle genetic material, such as HIV. Until now, scientists ...
... more DNA regions linked to type 2 diabetes have been ... to over 60. The study provides a fuller picture ... with some clear patterns emerging. The international team, ... Institute of Harvard and MIT, and the University of Michigan, ...
... affordable and accessible, we need to pay more attention to ... and the fact that we don,t yet understand what ... Hastings Center Report . The authors are current or former ... Most analyses of the ethical issues raised by whole ...
Cached Biology News:Scientists use light to 'tag and track' genetic processes 210 new diabetes gene links offer picture of biology underlying disease 210 new diabetes gene links offer picture of biology underlying disease 3Prenatal whole genome sequencing: Just because we can, should we? 2Prenatal whole genome sequencing: Just because we can, should we? 3
(Date:10/30/2014)... Spartan Bioscience announced today that Health Canada ... It detects CYP2C19 genetic mutations in less than 60 ... RX CYP2C19 System is the first near-patient DNA test ... Due to the system’s ease of use, Health Canada ... professionals such as doctors, nurses, pharmacists, and laboratory technicians, ...
(Date:10/30/2014)... Avure Technologies celebrates a year of success ... of its fleet of high volume High Pressure Processing (HPP) ... we return to PackExpo this year, which is where we ... said Jeff Williams, CEO at Avure. “Sales of the new ... be meeting the challenges of market demand for higher throughput. ...
(Date:10/30/2014)... CARLSBAD, Calif. , Oct. 30, 2014 Isis ... antisense therapeutics, today announced that management will present a company ... 2014 at 8:30 a.m. ET in Boston, MA. ... will be available on the "Investors & Media" section of ... available on the Isis website within 48 hours and will ...
(Date:10/30/2014)... 2014  Regado Biosciences, Inc. (Nasdaq: RGDO ... call and live audio webcast on Thursday, November 6, ... quarter 2014 financial results. Interested participants and ... 347-1165 for domestic callers or (412) 902-4276 for international ... the investor relations section of the Regado website at ...
Breaking Biology Technology:Health Canada approves first near-patient DNA test for personalized medicine 2Health Canada approves first near-patient DNA test for personalized medicine 3In High Demand: New High Pressure Processing (HPP) System with Maximum Throughput Drives Strong Sales 2In High Demand: New High Pressure Processing (HPP) System with Maximum Throughput Drives Strong Sales 3Isis Pharmaceuticals to Present at the Nomura Biotechnology Conference 2Regado Biosciences to Provide Third Quarter 2014 Financial Results 2
... news item is out of step with public opinion in ... state of Wisconsin grants $1 million and loans another $1 ... UW-Madison researcher so renowned that the words "Nobel Prize" practically ... drug discovery. , ,• The National Institutes of Health, the ...
... records have led to some adoption of the technology but ... ,Then Hurricane Katrina slammed into the Gulf Coast, destroying countless ... ,Katrina, and her followup Rita, may not only have changed ... focus of debate on electronic healthcare records. It is becoming ...
... -- Research scientist Seth Dobrin, Ph.D., has been named ... Genotyping Service of the Marshfield Clinic Research Foundation. , ,He ... to problems of mental health and development of new genetic ... discoveries he made earlier in his career as well as ...
Cached Biology Technology:Stem cell bank announcement validates quality of Wisconsin research 2Stem cell bank announcement validates quality of Wisconsin research 3Katrina's destruction likely to speed up electronic healthcare records adoption 2Katrina's destruction likely to speed up electronic healthcare records adoption 3Katrina's destruction likely to speed up electronic healthcare records adoption 4
... MAX POWER 500V Programmable Power Supply ... which can handle virtually any application ... current blotting. It is unique in ... The MAX POWER Programmable Power Supply ...
The Programmable MP-3500P-F Power Supply can be applied for any Microfluidic application....
...
BD BioCoat Laminin 35 mm Culture Dishes, tissue-culture treated polystyrene with a uniform application of mouse laminin....
Biology Products: