Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Switch for building barrier in roots

29.07.2015

Single gene regulates Casparian strip formation

Researchers at the University of Tokyo and Aberdeen University have identified the master switch for formation of the Casparian strip, a special structure in the root that plays an important role in nutrient uptake.


*Casparian strip formation and MYB36 function.

Copyright : © 2015 Takehiro Kamiya

The Casparian strip is made of lignin, the main component of wood, deposited in a particular location (the anticlinal cell wall) in between endodermal cells in the root. By filling the gap between cells, the Casparian strip prevents harmful materials from entering into plants and also prevents leakage of nutrient from roots.

Although the Casparian strip was first described in 1865 by Robert Caspary and several proteins involved in its formation have been identified, the overall process remained unclear.

The research group of Lecturer Takehiro Kamiya at the University of Tokyo Graduate School of Agricultural and Life Sciences and Professor David E. Salt at the University of Aberdeen isolated an Arabidopsis thaliana mutant with altered leaf concentrations of elements and identified MYB36, a transcription factor, as the causal gene of the mutant.

MYB36 turns on transcription of multiple genes involved in Casparian strip formation, leading to localized lignin deposition in the Casparian strip formation site. Furthermore, the groups succeeded in building Casparian strip-like structures in cells which do not normally form Casparian strips by expressing MYB36 in those cells. These results demonstrate that MYB36 is the master regulator of Casparian strip formation.

This discovery will contribute to our understanding of the control of the Casparian strip and its function in plant nutrient absorption as well as to developing crops with improved efficiency of nutrient uptake.


*Image
Casparian strip is made of lignin deposited between endodermal cells. MYB36 positively regulates genes required for both polymerizing lignin and locating lignin polymerizing machinery to the Casparian strip deposition site.

Paper
Takehiro Kamiya, Monica Borghi, Peng Wang, John M. Danku, Lothar Kalmbach, Prashant S. Hosmani, Sadaf Naseer, Toru Fujiwara, Niko Geldner, David E. Salt, "The MYB36 transcription factor orchestrates Casparian strip formation", Proceedings of the National Academy of Sciences of the United States of America Online Edition: 2015/6/30 (Japan time), doi: 10.1073/pnas.1507691112.


Associated links
UTokyo Research article

Euan McKay | ResearchSea
Further information:
http://www.researchsea.com

More articles from Life Sciences:

nachricht Ion treatments for cardiac arrhythmia — Non-invasive alternative to catheter-based surgery
20.01.2017 | GSI Helmholtzzentrum für Schwerionenforschung GmbH

nachricht Seeking structure with metagenome sequences
20.01.2017 | DOE/Joint Genome Institute

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Traffic jam in empty space

New success for Konstanz physicists in studying the quantum vacuum

An important step towards a completely new experimental access to quantum physics has been made at University of Konstanz. The team of scientists headed by...

Im Focus: How gut bacteria can make us ill

HZI researchers decipher infection mechanisms of Yersinia and immune responses of the host

Yersiniae cause severe intestinal infections. Studies using Yersinia pseudotuberculosis as a model organism aim to elucidate the infection mechanisms of these...

Im Focus: Interfacial Superconductivity: Magnetic and superconducting order revealed simultaneously

Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.

While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...

Im Focus: Studying fundamental particles in materials

Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales

Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...

Im Focus: Designing Architecture with Solar Building Envelopes

Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.

As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Sustainable Water use in Agriculture in Eastern Europe and Central Asia

19.01.2017 | Event News

12V, 48V, high-voltage – trends in E/E automotive architecture

10.01.2017 | Event News

2nd Conference on Non-Textual Information on 10 and 11 May 2017 in Hannover

09.01.2017 | Event News

 
Latest News

Helmholtz International Fellow Award for Sarah Amalia Teichmann

20.01.2017 | Awards Funding

An innovative high-performance material: biofibers made from green lacewing silk

20.01.2017 | Materials Sciences

Ion treatments for cardiac arrhythmia — Non-invasive alternative to catheter-based surgery

20.01.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>