Navigation Links
Plants have a double line of defence

Max Planck researchers in Cologne, Germany demonstrate that a multi-step defence system underlies the durable resistance of plants to fungal parasitesPlants are exposed to many different pathogens in the environment. Only a few of these pathogens, however, are able to attack a species of plant and "make it sick". If a particular pathogen is unable to attack a plant, that means that the plant is resistant to it ?in other words, it cannot host the pathogen.

This durable type of immunity of a plant to parasites is called nonhost resistance. Although, in nature, nonhost resistance stops almost all parasite attacks, it has been the subject of little research. Scientists from the Max Planck Institute for Plant Breeding Research in Cologne, working with Volker Lipka, Jan Dittgen, and Paul Schulze-Lefert, and in co-operation with colleagues from the Carnegie Institution in the US, have uncovered the molecular components of nonhost resistance and described this system of defence in the current edition of the journal Science (November 18, 2005). In their findings, they draw parallels between the immune systems of plants and animals. This research could be central to the development of new "green" fungicides.

The Max Planck researchers were able to identify the gene known as PEN (penetration) as an important component of nonhost resistance. They isolated arabidopsis mutations, which are partially susceptible to powdery mildews. If these genes are defective, or if the protein they code is missing in the plant cells, the fungus can invade the leaf epidermis cells more frequently. For that reason the scientists looked particularly at the question of exactly which function the PEN2 protein has in the defence against pathogens.

PEN2 is an enzyme located in the membrane of what are called peroxisomes. These are spatially separated cell compartments, in which metabolic reactions often take place that would be dangerous for the organism at any place other than
'"/>

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:10/29/2014)... as ,facultative, form part—together with other cells—of tissues and ... from the others. However, they have a very special ... cells again. This phenomenon is something that happens in ... tissue growth, thus allowing the regeneration of the organ ... the underlying mechanism that allows these cells to retain ...
(Date:10/29/2014)... organisms in the living world compete with members ... in how much they invest into their competitive ... to get access to high-quality resources, while others ... of the lower-quality resources that are left over ... animal and human societies seems to fluctuate considerably ...
(Date:10/29/2014)... of kidney cancer patients in Europe sheds light on ... an apparent link between exposure to aristolochic acid and ... research, by an international team led by scientists from ... Montreal, underscores the importance of investigating possible sources of ... of the Aristolochia genus, also has been suspected of ...
Breaking Biology News(10 mins):A mechanism that allows a differentiated cell to reactivate as a stem cell revealed 2Evolution of competitiveness 2Evolution of competitiveness 3Study sheds light on genetic architecture of kidney cancer 2Study sheds light on genetic architecture of kidney cancer 3
... northern Australia, finding black holes in space, to making ... work of some of its scientists and staff today ... awarded each year to staff of the CSIRO who ... 1985, the CSIRO Medals have been presented to a ...
... study published in Science and reviewed by F1000 ... brains have the amazing ability to be energy efficient. ... potentials, by controlling the flow of positive sodium and potassium ... equilibrium after an action potential requires energy. The ...
... 2009 Areas of turf-forming species created and maintained ... i.e. "urban grasslands" are an extremely common, but poorly ... grasslands in the U.S. and many receive high rates ... lakes, and estuaries and emissions of greenhouse gases such ...
Cached Biology News:CSIRO medal winners 2CSIRO medal winners 3Nitrogen mysteries in urban grasslands 2Nitrogen mysteries in urban grasslands 3
(Date:10/27/2014)... October 27, 2014 Ryan Carfley , ... month to sit down with Bryan Hamilton, the publisher of ... to discuss talent in the Research Triangle region of North ... were highlighted at the roundtable include the role of ... significance of work/life balance and the unique role that Millennials ...
(Date:10/27/2014)... The Italian company Roadrunnerfoot ... sell its artificial "lower limb", after the German ...      (Photo: http://photos.prnewswire.com/prnh/20141027/713097 ) , ... definitive judgement has arrived: Roadrunnerfoot, the small Italian ... hi-tech prostheses with composite materials, has won against ...
(Date:10/27/2014)... , Oct. 27, 2014 Kalorama Information ... recent Ebola concern in the United States ... virus.  The healthcare market researcher said the FDA,s Emergency Use ... vitro diagnostic tests for the detection of the Ebola ... proved useful.  Kalorama routinely assess the IVD industry and ...
(Date:10/27/2014)... 27, 2014 New Q4-2014 incentives ... , an industry leading unified communication and collaboration ... agents to deliver cloud-based audio and web/video conferencing ... , With SoundConnect’s Q4 incentive partners ... and/or web conferencing licenses sold, now through December ...
Breaking Biology Technology:Personify's Ryan Carfley Talks Recruiting with Triangle Business Journal, RPG Solutions 2Personify's Ryan Carfley Talks Recruiting with Triangle Business Journal, RPG Solutions 3Italian Lower Limb Prosthesis Company Wins Lawsuit Against German Giant Ottobock 2Kalorama: PCR The Go-to Test in Ebola Fight 2Kalorama: PCR The Go-to Test in Ebola Fight 3SoundConnect Unveils Q4 Partner Incentives 2
... Forest Laboratories, Inc.,(NYSE: FRX ) and H. ... Court,of Appeals for the Federal Circuit has affirmed a ... the District of Delaware which determined that,the U.S. patent ... upheld the injunction preventing Ivax/Teva,s proposed generic,product launch, thereby ...
... a Proven Leader at Driving Growth, SAN FRANCISCO, ... equity firm that focuses on investments in selected segments,of ... software, today announced the appointment of Michael L. Hurt,to ... Mr. Hurt, CEO,of Altra Industrial Motion (Nasdaq: AIMC ...
... Diagnostic Systems Installs CTLM(R) in Tianjin, China, ... Inc., (OTC Bulletin Board: IMDS) a pioneer in ... CT Laser Mammography,(CTLM(R)) system at the Tianjin Medical ... center in China. (Logo: http://www.newscom.com/cgi-bin/prnh/20040412/IMDSLOGO ...
Cached Biology Technology:Forest Laboratories Announces Federal Appeals Court Upholds Lexapro(R) Patent Decision 2Genstar Names Michael Hurt to Its Strategic Advisory Board 2Largest Asian Cancer Hospital to Evaluate New CT Laser Breast Imaging System 2Largest Asian Cancer Hospital to Evaluate New CT Laser Breast Imaging System 3
RABBIT ANTI SRC-RSV...
sodium channel, nonvoltage-gated 1 alpha,...
4-Hydroxy-3-nitrophenylacetyl hapten is conjugated to SGG (Sheep gamma globulin) lysine through amide bonds. This product is homologous to NP-BSA....
MOUSE ANTI HUMAN B-CELLS (FMC7):FITC Immunogen: HRIK cells - Human B-Lymphoblastoid line...
Biology Products: