HOME >> BIOLOGY >> NEWS
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
'"/>

Contact: Dr. Jan Lohmann
jan.lohmann@tuebingen.mpg.de
497-071-601-1405
Max-Planck-Gesellschaft
22-Dec-2005


Page: 1 2 3

Related biology news :

1. 454 Life Sciences and Max Planck publish sequence of one million base pairs
2. Max Planck researchers win part of Descartes Research Prize 2005
3. Global commitment of Max Planck researchers
4. Four Max Planck Partner Groups starting in India
5. First Max Planck Partner Institute in China
6. Innovative tagging technique may help researchers better protect fish stocks
7. Penn researchers discover how key protein stops inflammation
8. ASU researchers partner with UOP to make biofuel for military jets a reality
9. Einstein researchers prototype vaccine could provide improved protection against tuberculosis
10. Penn researchers discover pathway that eliminates genetic defects in red blood cells
11. U-M researchers find family of on switches that cause prostate cancer

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:4/28/2016)... and BANGALORE, India , April 28, ... Systems, a product subsidiary of Infosys (NYSE: INFY ... announced a global partnership that will provide end ... use mobile banking and payment services.      (Logo: ... key innovation area for financial services, but it also plays ...
(Date:4/28/2016)... First quarter 2016:   , Revenues amounted to ... of 2015 The gross margin was 49% (27) ... operating margin was 40% (-13) Earnings per share rose ... was SEK 249.9 M (21.2) , Outlook   ... The operating margin for 2016 is estimated to exceed ...
(Date:4/26/2016)... and LONDON , April ... part of EdgeVerve Systems, a product subsidiary of ... today announced a partnership to integrate the Onegini ...      (Logo: http://photos.prnewswire.com/prnh/20151104/283829LOGO ) ... their customers enhanced security to access and transact ...
Breaking Biology News(10 mins):
(Date:4/27/2016)... ... April 27, 2016 , ... PathSensors, Inc., a leading ... Dr. Lamka will assist PathSensors in expanding the use of the company’s CANARY® ... CANARY® test platform for the detection of harmful pathogens, including a number of ...
(Date:4/27/2016)... ... ... Global Stem Cells Group and the University of Santiago Biotechnology Lab have ... for potential stem cell protocol management for 2016 – 2020. , In 2015, ... establish a working agenda and foster initiatives to promote stem cell research and development ...
(Date:4/26/2016)... Calif. (PRWEB) , ... April 27, 2016 , ... ... office of Lewis Roca Rothgerber Christie LLP as an associate in the firm’s ... U.S. and international electrical, mechanical and electromechanical patent applications. He has an electrical ...
(Date:4/26/2016)... (PRWEB) , ... April 26, 2016 , ... ... laser lithography systems, announces the latest technology innovation for its Volume Pattern Generator ... tomorrow’s demand for production of advanced photomasks as well as a solution for ...
Breaking Biology Technology:
Cached News: