Navigation Links
Biologists discover an on/off button on plants' alarm system
Date:4/1/2010

Plants respond to attacks by herbivores or pathogens by activating defense programs that drive off or even kill the attackers. These defense responses require a great deal of the plant's energy and reserves, which would otherwise be invested in growth and reproduction. So, it's very important to strictly control the activity of defense genes. Hormones, such as the jasmonates, are crucial in this process and the plant produces these hormones when subjected to stress conditions.

The presence of the jasmonates sets a complex chain reaction in motion, starting with the degradation of the so-called JAZ proteins. This in turn frees up another protein (MYC2), which is the signal for launching the genetic defense programs and stopping the plant's growth. The presence of the JAZ proteins keeps the defense mechanism 'turned off'. Until now, it has been unclear how the JAZ proteins are able to block the MYC2 protein's activity.

A trio of NINJA, JAZ and TPL

Thanks to the work of Laurens Pauwels and Jan Geerinck from the team of Alain Goossens (VIB/Ghent University), that problem has now been clarified. It turns out that a newly discovered protein called NINJA (Novel INteractor of JAZ) connects the JAZ proteins with still another protein called TPL. As long as these proteins appear as a trio, they bind to MYC2 and that protein remains inactive. The moment that the JAZ proteins disappear as the consequence of stress and the subsequent production of the jasmonates MYC2 springs into action, triggering the plant's defense mechanism. The researchers have worked with Spanish colleagues from the CSIC/University of Madrid and have used a proteomics-based technology developed by Geert De Jaeger (VIB/Ghent University) and Erwin Witters (VITO/University of Antwerp). This technology makes it possible to determine the composition and production of protein complexes in plants.

Link between growth and stress

It has previously b
'/>"/>

Contact: Joris Gansemans
joris.gansemans@vib.be
32-472-594-067
VIB (the Flanders Institute for Biotechnology)
Source:Eurekalert

Page: 1 2

Related biology news :

1. New mathematical model helps biologists understand how coral dies in warming waters
2. Biologists use mathematics to advance our understanding of health and disease
3. Biologists image birth of blood-forming stem cells in embryo
4. Penn biologists determine microRNA activity is suppressed in mouse ovum
5. CCNY biologists identify new spiny pocket mouse species
6. Penn biologists explain how organisms can tolerate mutations, yet adapt to environmental change
7. Biologists merge methods, results from different disciplines to find new meaning in old data
8. New handbook for biologists who need more competence or confidence in statistics
9. Biologists discover bacterial defense mechanism against aggressive oxygen
10. Beyond genomics, biologists and engineers decode the next frontier
11. Biologists, educators recognize excellence in evolution education
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/13/2015)... -- higi, a leading cloud-based consumer engagement platform that provides ... their communities around health and wellness, announced today the ... ... convenient vehicle to receive validated health information from consumers. ... API will allow higi,s trusted partners, on a user ...
(Date:4/2/2015)... 2015 In the current ... outperforms the strongest competitors, showing outstanding performance in ... system is capable of a throughput of 5.000.000 ... to be ten times faster than most competitors ...      (Photo: http://photos.prnewswire.com/prnh/20150402/738673-a ) ...
(Date:4/1/2015)... April 1, 2015   Medisafe ™, the leading ... across iOS and Android smartphones ... biofeedback into the platform to allow patients to track ... the first time, patients will be able to visualize ... impacts important biometrics, such as glucose levels and blood ...
Breaking Biology News(10 mins):higi Launches Seamless Access to HIPAA-Compliant Health Outcomes and Activity Data 2higi Launches Seamless Access to HIPAA-Compliant Health Outcomes and Activity Data 3DERMALOG AFIS Emerges as Performance Winner in NIST Benchmark Test 2DERMALOG AFIS Emerges as Performance Winner in NIST Benchmark Test 3Medisafe Announces Launch of Biometric Integration, Enabling Patients to Stay Adherent to Their Meds and See Tangible Health Results 2
... release is available in German . , In ... immune system must be able to recognize myriad different foreign ... Institute of Immunobiology and the Centre for Biological Signalling Studies ... immune system,s B-cells can be activated by numerous substances from ...
... know about smoking, diet, exercise and available methods ... approximately half of all cancers nationwide. ... will host its Ninth Annual International Conference on ... Convention Center, located in Philadelphia. Thousands of scientists ...
... new study from North Carolina State University finds that fish ... than fish that live much further away. The surprising finding ... selenium, found near such facilities, which unfortunately poses problems of ... at least 30 kilometers (km) from a coal-fired power plant ...
Cached Biology News:One lock, many keys 2Study: Fish near coal-fired power plants have lower levels of mercury 2
(Date:4/27/2015)... 27, 2015 DryLet, LLC a ... applications such as animal waste reduction, bioremediation, wastewater ... in wastewater treatment plants and restaurant kitchen settings, ... the Texas Commission on Environmental Quality (TCEQ) Environmental ... Texas. , The company will highlight three of ...
(Date:4/27/2015)... April 27, 2015 Elsevier , ... and services, and Qatar University Research Office   have announced ... The awards ceremony, held last week at ... was attended by more than 40 guests representing ... presented by Professor Sheikha Abdulla Al-Misnad , President of ...
(Date:4/24/2015)... (PRWEB) April 24, 2015 DryLet, ... use in applications such as animal waste reduction, ... oil reduction in wastewater treatment plants and restaurant ... exhibitor at the National Restaurant Association’s NRA Show ... , Representatives of the company will be available ...
(Date:4/24/2015)... , April 24 , 2015 PAREXEL ... biopharmaceutical services provider, today announced that Partnerships in Clinical ... Product Management, the 2015 Clinical Innovator of the Year.  ... development team for the Company,s Perceptive MyTrials ® ... award Thursday night during the 2015 Partnership Awards in ...
Breaking Biology Technology:DryLet to Showcase Multiple Products at Texas Commission on Environmental Quality Trade Fair and Conference May 5-6 in Austin, Texas 2Elsevier Announces the Winners of Qatar University Scientists 2015 Scopus Awards 2Elsevier Announces the Winners of Qatar University Scientists 2015 Scopus Awards 3Elsevier Announces the Winners of Qatar University Scientists 2015 Scopus Awards 4Elsevier Announces the Winners of Qatar University Scientists 2015 Scopus Awards 5DryLet to Showcase Bio-React at the National Restaurant Association’s NRA Show 2015 May 16-19, 2015 in Chicago, Illinois 2PAREXEL Honored With 2015 Clinical Innovator Of The Year Award From Partnerships In Clinical Trials 2PAREXEL Honored With 2015 Clinical Innovator Of The Year Award From Partnerships In Clinical Trials 3PAREXEL Honored With 2015 Clinical Innovator Of The Year Award From Partnerships In Clinical Trials 4PAREXEL Honored With 2015 Clinical Innovator Of The Year Award From Partnerships In Clinical Trials 5
... Cephalon, Inc., (Nasdaq: CEPH ) will hold a public ... late Chairman and CEO on February 1, 2011, at 6:00 p.m. ... Pennsylvania. Dr. Baldino founded Cephalon in 1987 and ... the top ten biotechnology companies in the world. He was a ...
... SHANGHAI, Jan. 24, 2011 /PRNewswire-Asia-FirstCall/ -- China-Biotics, Inc. ("China-Biotics" ... leading developer, manufacturer and distributor of probiotics products in ... 2011 third quarter ended December 31, 2010. ... between $32 million and $33 million compared with $23 ...
... Jan. 24, 2011 RRD International, a strategy-driven biotech ... has entered into a partnership with the National Institutes ... (TRND) program as a regulatory support and development partner. ... focus on two rare disease drug development projects: Hereditary ...
Cached Biology Technology:Cephalon to Hold Public Memorial Service to Celebrate the Life of Company Founder, Frank Baldino, Jr., Ph.D. 2China-Biotics, Inc. Provides Preliminary FY2011Third Quarter Revenue 2China-Biotics, Inc. Provides Preliminary FY2011Third Quarter Revenue 3RRD Selected as Development Partner for NIH Therapeutics for Rare and Neglected Diseases Program 2RRD Selected as Development Partner for NIH Therapeutics for Rare and Neglected Diseases Program 3