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 tha

Contact: Prof. Paul Schulze-Lefert

Page: 1 2 3

Related biology news :

1. Plants recognize their siblings, biologists discover
2. Plants that produce more vitamin C may result from UCLA-Dartmouth discovery
3. Plants tag insect herbivores with an alarm
4. Plants with male and bisexual flowers on the same plant are better mothers
5. Plants do not emit methane
6. Plants management of nutrient suggests environmental remedies
7. Plants point the way to coping with climate change
8. Plants, plasmids and possibilities -- Methods permit functional gene studies in plants
9. Plants give up answers in the war on bacteria
10. Plants tell caterpillars when its safe to forage
11. Plants role in global warming re-examined in ORNL Science paper

Post Your Comments:

(Date:5/6/2017)... 5, 2017 RAM Group , ... new breakthrough in biometric authentication based on a ... properties to perform biometric authentication. These new sensors are ... created by Ram Group and its partners. This sensor ... supply chains and security. Ram Group is a ...
(Date:4/18/2017)... April 18, 2017  Socionext Inc., a global expert in SoC-based ... edge server, the M820, which features the company,s hybrid codec technology. ... by Tera Probe, Inc., will be showcased during the upcoming Medtec ... show at the Las Vegas Convention Center ... Click here ...
(Date:4/13/2017)... According to a new market research report "Consumer ... Administration, and Authorization), Service, Authentication Type, Deployment Mode, Vertical, and Region - ... to grow from USD 14.30 Billion in 2017 to USD 31.75 Billion ... ... MarketsandMarkets Logo ...
Breaking Biology News(10 mins):
(Date:10/9/2017)... ... October 09, 2017 , ... ... of medical marijuana products targeting the needs of consumers who are incorporating medical ... takes place in Phoenix, Arizona. , As operators of two successful Valley dispensaries, ...
(Date:10/7/2017)... ... October 06, 2017 , ... ... instruments and applications consulting for microscopy and surface analysis, Nanoscience Instruments is ... Nanoscience Analytical offers a broad range of contract analysis services for advanced ...
(Date:10/7/2017)... Mass. , Oct. 6, 2017  The ... work of three scientists, Jacques Dubochet, Joachim ... breakthrough developments in cryo-electron microscopy (cryo-EM) ... technology within the structural biology community. The winners ... Scientists can now routinely produce highly resolved, three-dimensional ...
(Date:10/6/2017)... (PRWEB) , ... October 06, 2017 , ... ... host a lunch discussion and webinar on INSIGhT, the first-ever adaptive clinical trial ... Investigator, Dana-Farber Cancer Institute. The event is free and open to the public, ...
Breaking Biology Technology:
Cached News: