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:4/6/2015)... NXT-ID, Inc. (NASDAQ: NXTD ) ("NXT-ID" ... on the growing mobile commerce market, announced today ... MINIATURE, MULTI-PURPOSE ANTENNA METHOD AND SYSTEM FOR ... introduces a new revolutionary method and system to ... of miniature antenna modules for multiple purposes including ...
(Date:4/2/2015)... GOTHENBURG, Sweden , April 2, 2015 ... for its touch fingerprint sensor FPC1025 from the distributor ... Deliveries will commence during Q2 2015 although the major ... 2015. The sensors will be used by smartphone manufacturers ... of 110 MSEK is included in the communicated revenue ...
(Date:3/31/2015)...   Guidepoint , a leading global research services ... Management TRACKER, part of the Guidepoint TRACKER ... medical device and therapeutics markets. The Post-Surgical Pain Management ... market share, and adoption rates across three major modalities ... The Post-Surgical Pain Management TRACKER will provide ...
Breaking Biology News(10 mins):NXT-ID Patents Miniature, Low Power Wireless Magnetic Stripe 2NXT-ID Patents Miniature, Low Power Wireless Magnetic Stripe 3NXT-ID Patents Miniature, Low Power Wireless Magnetic Stripe 4Fingerprint Cards Receives Touch Fingerprint Sensor Order of SEK 110 Million 2Guidepoint Launches Post-Surgical Pain Management TRACKER 2Guidepoint Launches Post-Surgical Pain Management TRACKER 3
... Yale School of Medicine have developed a simple urine ... but serious hypertensive complication of pregnancy. Dubbed the ... test accurately predicted preeclampsia in a study of 347 ... preventive care to pregnant women. The research will be ...
... , BLUE BELL, Pa. , Feb. 3 ... its Mexican subsidiary has been awarded a contract by the ... Affairs/National Citizen Registry) to create and manage an advanced citizen ... database with iris, fingerprint and facial biometric data on up ...
... the Himalayan mountains are thinning is not disputed. However, ... the causes. Lawrence Berkeley National Laboratory scientist Surabi Menon ... commonly blamed culpritgreenhouse gases, such as carbon dioxidefrom other ... melting. Menon and her collaborators found that airborne black ...
Cached Biology News:Yale-developed test can help predict and diagnose preeclampsia 2Unisys Awarded Contract to Provide Advanced Biometric Citizen Identification Solution to Government of Mexico 2Unisys Awarded Contract to Provide Advanced Biometric Citizen Identification Solution to Government of Mexico 3Black carbon a significant factor in melting of Himalayan glaciers 2Black carbon a significant factor in melting of Himalayan glaciers 3
(Date:4/27/2015)... , Alemania, April 27, 2015 ... nuevo receptor utilizando tecnología de descubrimiento de biomarcador computacional  ... el tratamiento de millones de pacientes con cáncer   ... ha recibido una patente en Europa titulada "Tissue Protective ... Molecular Health de que EPHB4 es un nuevo receptor ...
(Date:4/27/2015)... LONDON , April 27, 2015 ... about this release, please scroll to bottom . ... following equities: Lexicon Pharmaceuticals Inc. (NASDAQ: LXRX ... Synta Pharmaceuticals Corporation (NASDAQ: SNTA ), Spectrum ... Inc. (NASDAQ: MDVN ). Free research report ...
(Date:4/27/2015)... (PRWEB) April 27, 2015 DryLet, ... use in applications such as animal waste reduction, ... oil reduction in wastewater treatment plants and restaurant ... exhibitor at the Texas Commission on Environmental Quality ... in Austin, Texas. , The company will highlight ...
(Date:4/27/2015)... DOHA , April 27, 2015 ... medical information products and services, and Qatar University Research Office ... 2015 Scopus Awards. The awards ceremony, held last ... Doha , was attended by more than 40 guests ... Scopus awards were presented by Professor Sheikha Abdulla Al-Misnad ...
Breaking Biology Technology:Molecular Health obtiene la patente para un nuevo receptor 2Molecular Health obtiene la patente para un nuevo receptor 3Market Updates on Biotech Stocks -- Lexicon Pharma, Idera Pharma, Synta Pharma, Spectrum Pharma, and Medivation 2Market Updates on Biotech Stocks -- Lexicon Pharma, Idera Pharma, Synta Pharma, Spectrum Pharma, and Medivation 3Market Updates on Biotech Stocks -- Lexicon Pharma, Idera Pharma, Synta Pharma, Spectrum Pharma, and Medivation 4Market Updates on Biotech Stocks -- Lexicon Pharma, Idera Pharma, Synta Pharma, Spectrum Pharma, and Medivation 5DryLet 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 5
... CENTREVILLE, Va., Jan. 25 Octapharma is ... member of the Biotechnology Industry,Organization. Membership in ... is the Association,s considerable influence on the ... some of the,largest and most research intensive ...
... 25 Today, the Board of Directors of US,Oncology ... Inc.,(collectively, "US Oncology" or the "Company") announced that, effective,February ... role as Chief,Executive Officer (CEO) and will continue as ... D. Broussard will become the Company,s,President and CEO. The ...
... Leuven, Belgium − 2 to 3 children in 100 are ... a genetic defect, but in 80% of the cases scientists ... connected to the Katholieke Universiteit Leuven, in collaboration with an ... these patients, the mental retardation is caused by a twofold ...
Cached Biology Technology:Octapharma Joins Biotechnology Industry Organization 2US Oncology Announces Realignment of Executive Team 2US Oncology Announces Realignment of Executive Team 3Discovery of new cause of mental retardation simplifies search for treatments 2
COMING SOON: Anti-Mouse C5/C5b, Clone BB5.1. Monoclonal Antibody...
... Goat anti-Human Alpha 1 Acid ... azide Goats were immunized ... glycoprotein in Freund's adjuvant. ... absorbed to ensure specificity. ...
Anti-Mouse Valpha 2 TCR, Purified (Clone B20.1) (rat IgG2a)...
Request Info...
Biology Products: