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:
TAG: Max Planck researchers make breakthrough plant stem cell research

(Date:8/5/2015)... MOUNTAIN VIEW, Calif. , Aug. 5, 2015 /PRNewswire/ ... it exhibits continuous growth in applications, penetration into newer ... year after year. The global biosensors space has seen ... having exited the market so far. (Photo ... from Frost & Sullivan, Analysis of the Global ...
(Date:8/4/2015)... (NASDAQ: AMRI ) today reported financial and operating results for ... , Second quarter contract revenue of $ 85.2 ... Adjusted contract margins of 26 % , ... in EPS from royalties in the current quarter , ... are very pleased to present another strong financial quarter, with all ...
(Date:7/31/2015)... , Kina, 31. juli 2015 Den 10. ... afholdt af BGI fra den 22. - 25. oktober i ... Konferencen fejrer sin 10-års fødselsdag i år. Siden starten ... indflydelsesrige årlige møder på ,omik,-feltet, og er en af ... ICG-10 fokuserer på nylige gennembrud og fremskridt ...
Breaking Biology News(10 mins):Innovative Biosensors Incite Use in Non-Traditional Applications 2Innovative Biosensors Incite Use in Non-Traditional Applications 3Innovative Biosensors Incite Use in Non-Traditional Applications 4AMRI Announces Second Quarter 2015 Results 2AMRI Announces Second Quarter 2015 Results 3AMRI Announces Second Quarter 2015 Results 4AMRI Announces Second Quarter 2015 Results 5AMRI Announces Second Quarter 2015 Results 6AMRI Announces Second Quarter 2015 Results 7AMRI Announces Second Quarter 2015 Results 8AMRI Announces Second Quarter 2015 Results 9AMRI Announces Second Quarter 2015 Results 10AMRI Announces Second Quarter 2015 Results 11AMRI Announces Second Quarter 2015 Results 12AMRI Announces Second Quarter 2015 Results 13AMRI Announces Second Quarter 2015 Results 14AMRI Announces Second Quarter 2015 Results 15AMRI Announces Second Quarter 2015 Results 16AMRI Announces Second Quarter 2015 Results 17AMRI Announces Second Quarter 2015 Results 18AMRI Announces Second Quarter 2015 Results 19AMRI Announces Second Quarter 2015 Results 20AMRI Announces Second Quarter 2015 Results 21AMRI Announces Second Quarter 2015 Results 22AMRI Announces Second Quarter 2015 Results 23AMRI Announces Second Quarter 2015 Results 24Den 10. internationale konference om Genomics (ICG-10) åbner i oktober 2
(Date:9/3/2015)... Texas , Sept. 3, 2015  Vermillion, Inc. ... on gynecologic disease, today announced that Herbert Fritsche ... subsidiary, ASPiRA LABS, is the recipient of the 2015 ... and Biomarkers (ISOBM) for outstanding contributions to the field ... the award on October 5 th in Zakopane, ...
(Date:9/3/2015)... ... September 03, 2015 , ... Michigan-based ... monitoring wearable early 2016. , The device, called the Halo H1, is ... and electrical sensing technology. These sensors track trending interstitial fluid levels in the ...
(Date:9/2/2015)... , Sep. 02, 2015 ... has announced the addition of Jain PharmaBiotech,s new ... Companies" to their offering. This ... development of sequencing technologies, and their applications. Current ... as companies developing them. Various applications of sequencing ...
(Date:9/2/2015)... 02, 2015 ... announced the addition of Jain PharmaBiotech,s new ... Companies" to their offering. ... besides fluorescence in situ hybridization (FISH), comparative ... cytogenetics includes application of nanobiotechnology, microarrays, real-time ...
Breaking Biology Technology:Vermillion Announces Dr. Herbert Fritsche as Recipient of the 2015 Abbott Award from the International Society of Oncology and Biomarkers 2Technology Startup Halo Wearables to Unveil Non-Invasive Hydration Monitoring Device Early 2016 2Global DNA Sequencing Technologies Report 2015: Profiles of 130 Companies Involved in Sequencing and their 140 Collaborations 2Global Cytogenetics Technologies Study 2015-2025 - Latest Markets and Companies Analysis 2Global Cytogenetics Technologies Study 2015-2025 - Latest Markets and Companies Analysis 3
Cached News: