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

genes, such as WUSCHEL work together to maintain this fine balance at the tip of the shoot.

The working group led by Dr. Jan Lohmann at the Max Planck Institute for Developmental Biology in Tübingen, Germany has now solved this problem. The object of investigation was Arabidopsis thaliana, the "favorite plant" for molecular and genetic research, whose genome was sequenced years ago. Lohmannâ?super>TMs team now carried out elaborate genetic and biochemical experimentation, and thereby identified four genes, which might serve as a mechanistic connection between plant hormones and the genetic regulatory elements in meristem.

The researchers in Tübingen used gene expression analysis to show that the genes ARR5, ARR6, ARR7 and ARR 15, "Arabidopsis Response Regulators", are subject to genetic regulation via the WUSCHEL gene. In particular, WUSCHEL restricts the activity of ARR7 in the apical meristem. The ARR genes in turn carry out a particularly important task in hormonal regulation: they are part of a negative feedback loop, by which the growth-inducing plant hormone cytokinin limits its own influence. The study shows that the ARR genes play a direct role in regulation of the stem cell pool.

The hormone itself instigates the meristematic stem cells to split; at the same time, it activates various ARR genes, which break the cytokinin signal chain. Jan Lohmann explains that "WUSCHEL supports the cytokinin effect by stopping its negative feedback." That is also the reason for earlier observations, that Arabidopsis samples with defective WUSCHEL genes only develop very small meristems, and have trouble growing. The researchers in Tübingen have now discovered the same effect in mutants whose ARR7 gene is constitutively active.

Cytokinin can only have its full growth-promoting effect in tissue in which the WUSCHEL regulatory gene is active. "Meristematic regulation is a fabulous example of how the effects of free circulating hormon
'"/>

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:12/10/2014)...  Valencell, a leader in performance biometric data sensor ... from its licensees for highly accurate, clinically validated biometric ... coming from fitness and health sectors, but first responders/military ... is only as useful as the biometric data it ... in long-term mass consumer adoption of wearable products," said ...
(Date:12/10/2014)... , December 9, 2014 ... ITN,s BCARD Platform   ... enterprise meeting scheduling solutions for business-to-business (B2B) events, ... world leader in mobile near-field communication (NFC), Bluetooth ...      (Logo: http://photos.prnewswire.com/prnh/20140612/691055) , Jifflenow ...
(Date:12/3/2014)... Dec. 2, 2014   Marvin Test Solutions ... test solutions for military, aerospace, and manufacturing organizations, ... its successful TS-900 PXI semiconductor test platform ... of high-end systems to customers at a fraction ... to traditional ATE. "Our semiconductor ...
Breaking Biology News(10 mins):Wearable Technology Products Demand Highly Accurate Biometric Technology 2Jifflenow And ITN International Bring Cutting-Edge Badge Scanning Technology To B2B Events 2Jifflenow And ITN International Bring Cutting-Edge Badge Scanning Technology To B2B Events 3Marvin Test Solutions Brings New Capabilities to PXI-Based Semiconductor Test with TS-960 2Marvin Test Solutions Brings New Capabilities to PXI-Based Semiconductor Test with TS-960 3
... completing the sequencing of the chimpanzee genome last year, geneticists ... of our closest evolutionary relative, looking for the differences that ... found the human DNA sequence with the most dramatically increased ... DNA is still unknown, but it appears to be directly ...
... has become a worldwide health problem, affecting millions ... Researchers are experimenting with combinations of anti-inflammatory medicines ... research presented today at Digestive Disease Week® 2006 ... progress to improve symptoms of the disease. ...
... the University of Colorado-Denver and Health Sciences Center and ... how cells respond to DNA damage and other acute ... which could lead to new diagnostic markers and cancer ... reports in the May 21 advanced online version of ...
Cached Biology News:Researchers identify human DNA on the fast track 2Researchers identify human DNA on the fast track 3Novel therapy combinations gain ground in treating hepatitis 2Novel therapy combinations gain ground in treating hepatitis 3Novel therapy combinations gain ground in treating hepatitis 4Novel therapy combinations gain ground in treating hepatitis 5Novel therapy combinations gain ground in treating hepatitis 6Researchers uncover new mechanism of tumor suppressor 2
(Date:12/19/2014)... OR and Hershey, PA (PRWEB) December 19, 2014 ... Pink: BJCT), a leading developer and manufacturer of ... entered into an agreement with Immunomic Therapeutics, Inc. ... Biojector®-2000 needle-free injection device with its LAMP™ vaccine ... an option for an exclusive Worldwide license to ...
(Date:12/19/2014)... December 19, 2014 BioPlus Specialty ... pharmacies, announces the promotion of Nick Maroulis, Pharm.D. to ... Pharmacy Services. , In this position, Dr. Maroulis ... also managing the directors of our multi-site pharmacies as ... since 1997 and during that time he has served ...
(Date:12/19/2014)... , Dec. 19, 2014  Roche (SIX: RO, ROG; ... Technologies, Inc. (Bina), a privately held company based ... USA. Bina provides a big data platform for ... (NGS) data. Bina,s proprietary on-market Genomic Management Solution, ... researchers to perform fast and scalable analyses to ...
(Date:12/19/2014)... 19, 2014 Decision Resources Group finds that ... a 12 percent compound annual growth rate through 2023. ... population and the increasing adoption of dental implants. Growing ... will also spur demand for dental biomaterials because they ... periodontal treatments. Other key findings from Decision ...
Breaking Biology Technology:Bioject and Immunomic Therapeutics Enter into an Agreement for License of Needle-Free Technology for LAMP-vax Vaccines 2Bioject and Immunomic Therapeutics Enter into an Agreement for License of Needle-Free Technology for LAMP-vax Vaccines 3BioPlus Specialty Pharmacy Promotes Dr. Nick Maroulis to Vice President of Specialty Pharmacy Services 2Roche acquires Bina Technologies and enters the genomic informatics market 2Roche acquires Bina Technologies and enters the genomic informatics market 3Latin American Dental Biomaterial Market Will Expand at a 12 Percent Annual Growth Rate Through 2023 2Latin American Dental Biomaterial Market Will Expand at a 12 Percent Annual Growth Rate Through 2023 3
... - The 53 Wisconsin companies that won more ... Research (SBIR) and Small Business Technology Transfer (STTR) awards ... an upcoming banquet in Madison. , ,The awards banquet ... workshop. The workshop will focus on SBIR/STTR funding opportunities. ...
... Bend, Wis. - Serigraph Inc. will manufacture, ... tags through a licensing agreement with MIKOH Corp. ... tag if it is interfered with after its original positioning, ... from one item to another without affecting the function of ...
... is the biotech industry to the economy of a region? ... , ,Better yet, look at the numbers. , ,That's what ... Milken Institute , did for a landmark study released ... in Philadelphia. Philly leaders wanted to know where that city ...
Cached Biology Technology:Better collaboration urged to further Wisconsin biotech 2
All serum is collected from adult animals aged 6 months or older. Certified U.S. orgin. Pricing: $35/unit for 1 - 10 units...
adult...
DNA Purification...
Porcine Serum Available Anticoagulants: N-02: Citrate N-04: Heparin (Na) N-06: K2EDTA N-08: Potassium Oxalate N-10: EDTA (Na) N-03: Alsevers N-05: ACD N-07: CPD N-09: K3EDTA N-11...
Biology Products: