Featured Research

from universities, journals, and other organizations

Novel battleground for plant-pathogen interactions

Date:
March 13, 2014
Source:
Norwich BioScience Institutes
Summary:
A new finding opens the door to improving crop disease resistance by optimizing how plants recognize pathogenic microbes. The research also shows how pathogens inhibit the mechanism to cause disease. It was previously only associated with other processes in mammalian cells. "Our research highlights a battle between hosts and pathogens to take control of an important mechanism," said the first author. "Control over this mechanism to activate immune receptors determines whether a plant stays healthy or suffers from disease."

Scientists at The Sainsbury Laboratory in Norwich, with collaborators at Michigan State University and the University of Illinois, have unveiled a new way in which plants perceive pathogens to activate immunity. They also show how pathogens inhibit the mechanism to cause disease. It was previously only associated with other processes in mammalian cells.

Related Articles


When plants detect microbial molecules, they trigger immune responses to prevent disease. Although several plant immune receptors for these microbial molecules are known, how they are activated once the microbe is recognized is not well understood.

In a study published this week in the journal Science, the scientists found that phosphorylation of an amino acid called tyrosine -- phosphorylation being a process that can turn molecules on or off -- is key for activating plant immune receptors. This mechanism is already known to play an essential role in the activation of mammalian receptors, and its mis-regulation is often linked to important chronic diseases.

The current study shows for the first time that the modification occurs in plant immune receptors as well.

"This finding opens the door to improving crop disease resistance as we can investigate ways to optimize how plants recognize pathogenic microbes," says Professor Cyril Zipfel.

"It also provides a new link between our understanding of cellular signalling in plant and animal cells."

In the same study, the researchers discovered that pathogenic bacteria use an enzyme secreted within plant cells to derail the plant's immune response. They use an enzyme to remove tyrosine phosphorylation from immune receptors, quelling the plant's signalling mechanisms. Inhibiting the immune response allows bacteria to cause disease.

"Our research highlights a battle between hosts and pathogens to take control of an important mechanism," said first author Dr Alberto Macho from The Sainsbury Laboratory.

"Control over this mechanism to activate immune receptors determines whether a plant stays healthy or suffers from disease," he says.


Story Source:

The above story is based on materials provided by Norwich BioScience Institutes. Note: Materials may be edited for content and length.


Journal Reference:

  1. A. P. Macho, B. Schwessinger, V. Ntoukakis, A. Brutus, C. Segonzac, S. Roy, Y. Kadota, M.-H. Oh, J. Sklenar, P. Derbyshire, R. Lozano-Duran, F. G. Malinovsky, J. Monaghan, F. L. Menke, S. C. Huber, S. Y. He, C. Zipfel. A Bacterial Tyrosine Phosphatase Inhibits Plant Pattern Recognition Receptor Activation. Science, 2014; DOI: 10.1126/science.1248849

Cite This Page:

Norwich BioScience Institutes. "Novel battleground for plant-pathogen interactions." ScienceDaily. ScienceDaily, 13 March 2014. <www.sciencedaily.com/releases/2014/03/140313142606.htm>.
Norwich BioScience Institutes. (2014, March 13). Novel battleground for plant-pathogen interactions. ScienceDaily. Retrieved December 18, 2014 from www.sciencedaily.com/releases/2014/03/140313142606.htm
Norwich BioScience Institutes. "Novel battleground for plant-pathogen interactions." ScienceDaily. www.sciencedaily.com/releases/2014/03/140313142606.htm (accessed December 18, 2014).

Share This


More From ScienceDaily



More Plants & Animals News

Thursday, December 18, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Navy Unveils Robot Fish

Navy Unveils Robot Fish

Reuters - Light News Video Online (Dec. 18, 2014) The U.S. Navy unveils an underwater device that mimics the movement of a fish. Tara Cleary reports. Video provided by Reuters
Powered by NewsLook.com
Kids Die While Under Protective Services

Kids Die While Under Protective Services

AP (Dec. 18, 2014) As part of a six-month investigation of child maltreatment deaths, the AP found that hundreds of deaths from horrific abuse and neglect could have been prevented. AP's Haven Daley reports. (Dec. 18) Video provided by AP
Powered by NewsLook.com
When You Lose Weight, This Is Where The Fat Goes

When You Lose Weight, This Is Where The Fat Goes

Newsy (Dec. 17, 2014) Can fat disappear into thin air? New research finds that during weight loss, over 80 percent of a person's fat molecules escape through the lungs. Video provided by Newsy
Powered by NewsLook.com
The Hottest Food Trends for 2015

The Hottest Food Trends for 2015

Buzz60 (Dec. 17, 2014) Urbanspoon predicts whicg food trends will dominate the culinary scene in 2015. Mara Montalbano (@maramontalbano) has the story. Video provided by Buzz60
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins