Navigation Links
Plant hormone auxin triggers a genetic switch
Date:4/18/2011

This release is available in German.

During the development of organisms, a particular event repeatedly occurs: a signal appears temporarily, but the processes it triggers must be maintained for example, when the fate of cells in the embryo is established. The plant hormone auxin plays an important role as a signalling molecule during embryo development of the thale cress (Arabidopsis thaliana), a model plant widely used in genetic studies. Researchers from the Max Planck Institute for Developmental Biology and the University of Tbingen were already familiar with important components, through which auxin exerts its influence, and some of their interactions. They have now combined several of these components in a regulatory network such that an increasing concentration of auxin can "switch on" genes for the embryo's normal development. Once a certain point has been reached, the genes do not halt their increased activity, or only do so gradually, even if the auxin concentration declines. Similar switching mechanisms are also known from the animal kingdom.

In the normal course of events, a plant embryo becomes a seedling and the seedling grows into a plant with all of its organs: roots, stem, leaves and flowers. The foundations for this development are laid during early embryonic development. The plant hormone auxin is an important signal transmitter during this phase of development. It was already known that it promotes, for example, the breakdown of an inhibitor that can prevent certain factors from activating their target genes. In an early phase of embryo development, the auxin concentration rises in the cells located at the top of the embryo, from which the above-ground parts of the plant will later form. Shortly after that, auxin is transported into the lower cells. So complicated, so good. However, this does not fully explain the exact r
'/>"/>

Contact: Gerd Juergens
gerd.juergens@tuebingen.mpg.de
49-070-716-011-309
Max-Planck-Gesellschaft
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Ancestors of land plants revealed
2. The Last Great Plant Hunt: The story of Kews Millennium Seed Bank
3. Studies of marine animals aim to help prevent rejection of transplanted organs
4. Improvements in embryonic preimplantation genetic screening techniques
5. Circadian rhythms spark plants ability to survive freezing weather
6. Combating plant diseases is key for sustainable crops
7. Shootingstars provide clues to likely response of plants to global warming
8. Periodontal stem cell transplantation shows promise
9. New genetic study helps to solve Darwins mystery about the ancient evolution of flowering plants
10. Are invasive plants a threat to native biodiversity? It depends on the spatial scale
11. If plants generate magnetic fields, theyre not sayin
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Plant hormone auxin triggers a genetic switch
(Date:8/21/2014)... designed by an international standards process, will be available ... an invited review published in the OnlineFirst version of ... the official journal of the American Society for Parenteral ... reduce the occurrence of misconnection that can be harmful ... are used to join medical devices, components, and accessories ...
(Date:8/21/2014)... (ANU) team has successfully replicated one of the crucial ... powered by sunlight which could manufacture hydrogen as a ... It is an exciting prospect to use them to ... Dr Kastoori Hingorani, from the ARC Centre of Excellence ... Biology. , Hydrogen offers potential as a zero-carbon replacement ...
(Date:8/21/2014)... resulting in severe abdominal pain, vomiting and systemic inflammation. ... diagnosed with the disease resulting in 1000 deaths. There ... intravenous fluid and nutritional support. , Dr Jason ... the research, said "The major causes of pancreatitis include ... intake combined with a high fat diet. In fact, ...
Breaking Biology News(10 mins):New feeding tube connectors will improve patient safety 2Water and sunlight the formula for sustainable fuel 2Insulin offers new hope for the treatment of acute pancreatitis 2
... Kawabe has discovered the workings of a process that had ... in the brain to grow and form complex networks. The ... of protein components has an unexpected function in nerve cells: ... that nerve cells can form the tree-like extensions that are ...
... Marino will speak on the anatomical basis of dolphin intelligence ... (AAAS) in San Diego, on Sunday, Feb. 21 at 3:30 ... our own and second in mass to the human brain ... expert in the neuroanatomy of dolphins and whales, Marino will ...
... remains one of the most deadly infectious diseases. Yet, how ... has remained an enigma despite decades of rigorous research. ... at the University of California, Riverside has identified a mechanism ... blood to spread the disease. "If this mechanism can ...
Cached Biology News:How nerve cells grow 2UCR researcher identifies mechanism malaria parasite uses to spread among red blood cells 2
(Date:8/22/2014)... for application as catalysts, sensors, drug delivery ... photonics and molecular electronics. Gaining knowledge of ... and chemical properties, has been challenging. Now, ... that high-resolution electron microscopy can be used ... all gold atoms are observed. The results ...
(Date:8/22/2014)... The Global and China Diabetes Drugs Industry is ... of the Diabetes Drug industry in Global and China. ... industry, including definitions, applications and industry chain structure. Global ... with a focus on history, developments, trends and competitive ... and Chinese situation is also offered. , The report ...
(Date:8/22/2014)... Aug. 22, 2014 Research and Markets ... Molecular Biology Enzymes, Kits, & Reagents (Cloning, Epigenetics, PCR, ... report to their offering. The global ... in 2013, and is expected to grow at a ... Molecular biology enzymes, kits, & reagents find applications in ...
(Date:8/22/2014)... Nerium International, the go-to, buzzworthy skincare ... again. Nerium will showcase its signature NeriumAD® Age-Defying ... Cream to Hollywood’s elite at the official Giving ... Primetime Emmy® Awards. , Developed from cutting-edge research ... show that NeriumAD night cream dramatically reduces the ...
Breaking Biology Technology:A breakthrough in imaging gold nanoparticles to atomic resolution by electron microscopy 2Diabetes Drugs Industry Growth Analysis in Global, China Regions Research Report Available at DeepResearchReports.com 2Diabetes Drugs Industry Growth Analysis in Global, China Regions Research Report Available at DeepResearchReports.com 3Global Molecular Biology Enzymes, Kits, & Reagents (Cloning, Epigenetics, PCR, Restriction Digestion, Sequencing) Market - Forecast to 2018 2Global Molecular Biology Enzymes, Kits, & Reagents (Cloning, Epigenetics, PCR, Restriction Digestion, Sequencing) Market - Forecast to 2018 3Nerium International Joins Television’s Biggest Stars at Backstage Creations Giving Suite at the 66th Primetime Emmy Awards 2Nerium International Joins Television’s Biggest Stars at Backstage Creations Giving Suite at the 66th Primetime Emmy Awards 3
... Michigan,s stem,cell research initiative -- Proposal 2 -- ... reprehensible Tuskegee Experiments as a basis,for comparison to ... myths and,misinformation. Distortions about the nature and regulatory ... is important to set the facts straight., ...
... Brings Hope and Awareness to Millions of Couples ... Ferring Pharmaceuticals is,honoring 12 lucky families who won ... their heart-warming and inspirational stories of their,journey to ... the,help of Ferring,s family of fertility products. The ...
... 23 Alfacell Corporation,(Nasdaq: ACEL ) today ... for the,fiscal year ended July 31, 2008, filed ... 2008, included an audit opinion from its independent,registered ... company,s,ability to continue as a going concern. The ...
Cached Biology Technology:Anti-Stem-Cell-Research Ad Ignores Facts 2Anti-Stem-Cell-Research Ad Ignores Facts 3Ferring Celebrates Winner of 2008 My Little Miracle Essay Contest During National Infertility Awareness Week 2Ferring Celebrates Winner of 2008 My Little Miracle Essay Contest During National Infertility Awareness Week 3Ferring Celebrates Winner of 2008 My Little Miracle Essay Contest During National Infertility Awareness Week 4Alfacell Receives Going Concern Audit Opinion 2
The essence of fluorescence analysis is sensitivity. The high throughput optical system in the RF-5301PC employs a blazed holographic grating, photomultiplier and digital signal processing to provide...
... CHEMICON® CaspaTag™ Caspase-9 Pan-Caspase In Situ Assay ... detection of active caspases in cells undergoing ... only. Not for use in diagnostic or ... Detection Kits use a novel approach to ...
... call for critical, but time-consuming optimization ... siRNA transfection protocols resulting in less ... be used to efficiently transfect adherent ... without increased cytotoxicity. From start to ...
... of Saccharomyces cerevisiae, as well as other ... many molecular biology laboratories. The ability to ... plasmid and linear DNAs using lithium based ... plasmid transformations and library screening easy and ...
Biology Products: