Navigation Links
Plants have a double line of defence

inside the compartments. If a fungus tries to invade a plant cell, the peroxisomes are led over to the entry site by the attached PEN2 protein. One or more sugar molecules can be separated from another cell component through the enzyme activities of the PEN2 enzyme, a glycosyl hydrolase. The substance released by it appears to have a fungicidal effect, which kills the pathogen.

The researchers, on the other hand, observed that when PEN2 is missing, the plants become more susceptible not only to grass powdery mildew fungi but also other pests ?for example, the pathogens causing late potato blight. PEN2 is therefore a basic component of the plant's immune system with a broad range of effects.

However if PEN2 is missing, the plant is not completely helpless against fungal diseases. There is still another line of defence which they have to get through. If PEN2 is missing, the plant takes a drastic step: the cell dies together with its attacker, which protects the neighbouring plant tissue from infection.

In this deadly line of defence, very different proteins play a key role ?particularly EDS1, PAD4 and SAG101. They were already known to researchers in other species of plants, which identify molecular traits only present in parasites by using immune receptors both on the cell surface and inside the cell. Only if this second mechanism also fails can the originally non-virulent grass powdery mildew fungus colonise the plant.

The Max Planck research has now demonstrated that the nonhost resistance of plants develops out of a defence system with at least two steps. These steps determine whether a plant is susceptible to a disease or not. The redundancy of the defence layers and the wide-ranging effects of PEN2 explain why, in nature, nonhost resistance is a durable and broadly effective defence mechanism. If a building block is missing from one defence layer, its function will be taken over by components of the next layer.

Until now,
'"/>

Source:Max-Planck-Gesellschaft


Page: 1 2 3

Related biology news :

1. Quantum Dots Research Leads to New Knowledge about Protein Binding in Plants
2. Plants, animals share molecular growth mechanisms
3. Plants respond similarly to signals from friends, enemies
4. Plants defy Mendels inheritance laws, may prompt textbook changes
5. Study: Plants use dual defense system to fight pathogens
6. Plants discriminate between self and non self
7. Prozac for future Plants on Mars
8. Plants reveal a secret and bring researchers nearer a cleaner future
9. Plants, too, have ways to manage freeloaders
10. Plants give pests sock in the gut
11. Plants used to detect gas leaks, from outer space!
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Plants have double line defence

(Date:1/22/2015)... Infinisource has launched its new NXG series of time ... sets a higher standard for collecting attendance and labor data ... plug-and-play installation, touch screen interface and seamless connection to cloud-based ... collection solution for the small to mid-size employer. ...
(Date:12/22/2014)... DUBLIN , Dec. 22, 2014 Research and ... the addition of the "The Global Watermarking ... http://photos.prnewswire.com/prnh/20130307/600769 ... global digital media watermarking and fingerprinting markets. Watermarking ...
(Date:12/19/2014)... Dec. 18, 2014 Research and Markets ( http://www.researchandmarkets.com/research/86ncd6/micro_market ... Monitor: North America Perimeter Security Systems Market" report to ... The North American perimeter security market is estimated to ... Although the U.S. market holds a larger share in this ...
Breaking Biology News(10 mins):Infinisource's NXG series sets new time clock standard 2The Global Watermarking and Fingerprinting Markets 2Micro Market Monitor: North America Perimeter Security Systems Market (Intrusion Detection Sensor, Video Surveillance, Communication/Alarm and Notification, Access Control System) 2Micro Market Monitor: North America Perimeter Security Systems Market (Intrusion Detection Sensor, Video Surveillance, Communication/Alarm and Notification, Access Control System) 3
... October 2011 A young scientist who led research into the ... surface disease has been named the winner of the Young Investigator ... will be presented with her award at The Stem Cell Symposium, ... 2011. The $10,000 prize is awarded annually to a young scientist ...
... primary producers of ammonia in Houston,s atmosphere, and cars and ... to a new study by researchers at Rice University and ... quality draws minimal oversight from the Environmental Protection Agency (EPA), ... means to life in and around the metropolis. ...
... microscopical water channels are also present in the cells ... transported through the protective surface of the cell. Scientists at ... of the body,s water channels can be modified such that ... the treatment of several diseases. "It,s important to understand ...
Cached Biology News:Regenerating eyes using cells from hair: Stem Cells awards research into stem cell deficiency 2Ammonia gets overdue overview 2Ammonia gets overdue overview 3Water channels in the body help cells remain in balance 2
(Date:1/22/2015)... zFlo Motion , a US leader in biomechanics software ... a new partner. STT-Systems has developed an impressive ... with offerings in the optical-motion capture, 3D scanning, and industrial ... unit), iSen, is opening eyes around the world. With no ...
(Date:1/22/2015)... NJ (PRWEB) January 22, 2015 ... technologies such as the Bioruptor® and complete solutions ... system for chromatin immunoprecipitation, alleviating the need for ... and controls needed for ChIP of histones or ...
(Date:1/22/2015)... Mass. , Jan. 22, 2015   GenoSpace , a ... of tools to enable the broad use of genomic, imaging ... announced the appointment of Michelle Munson , CEO of ... director. Logo - http://photos.prnewswire.com/prnh/20150122/170713 ...
(Date:12/24/2014)... NEW YORK , Dec. 24, 2014 ... patient care in critical areas, announced the closing of an ... warrants to purchase up to an aggregate 3,500,000 shares of ... and $.01 per warrant.  The warrants have a per share ...
Breaking Biology Technology:3D Motion Capture Just Got Easy 2Diagenode Launches Unique Semi-Automated Solution for Chromatin Immunoprecipitation 2GenoSpace Expands Board with Appointment of Michelle Munson 2PlasmaTech Biopharmaceuticals, Inc. Announces Closing of Public Offering 2PlasmaTech Biopharmaceuticals, Inc. Announces Closing of Public Offering 3
... Sept. 15 CMS, Inc., an Elekta Company ... management,solutions, today announced the commercial launch of its ... of the Focal product line that also includes ... that support the,visualization and utilization of 4D image ...
... BUFFALO, N.Y., Sept. 15 Kinex Pharmaceuticals announced,that ... Company,s Board of,Directors., Dr. Hsia is a ... a publicly traded company listed in New York ... President, Scientific,Affairs of Watson Pharmaceuticals before his retirement. ...
... -- Sinovac Biotech Ltd. (Amex:,SVA), a leading provider ... clinical trials in Ukraine for its inactivated hepatitis ... being conducted by,Biolik Biopharmaceutical Company, a vaccine manufacturer ... the Country. Biolik will,also market and distribute Healive ...
Cached Biology Technology:CMS, Inc., an Elekta Company, Announces Commercial Availability of Focal4D(TM) 2Sinovac Initiates Clinical Trials for Inactivated Hepatitis A Vaccine in Ukraine 2Sinovac Initiates Clinical Trials for Inactivated Hepatitis A Vaccine in Ukraine 3
Evolutionarily conserved signaling intermediate in Toll pathway...
Phosphatidylinositol transfer protein beta isoform (PtdIns transfer protein beta) (PtdInsTP) (PI-TP-beta). [Source:Uniprot/SWISSPROT;Acc:P48739] Antigen: Recombinant Protein Epitope Signature Tag...
Mouse monoclonal [88B] to nicotinic Acetylcholine Receptor ( Abpromise for all tested applications)....
PPIF Antibody...
Biology Products: