Featured Research

from universities, journals, and other organizations

New key to plant disease resistance discovered

Date:
March 28, 2011
Source:
University of Kentucky
Summary:
Plant pathologists recently discovered a metabolite that plays a critical role early on in the ability of plants, animals, humans and one-celled microorganisms to fend off a wide range of pathogens at the cellular level.

University of Kentucky plant pathologists recently discovered a metabolite that plays a critical role early on in the ability of plants, animals, humans and one-celled microorganisms to fend off a wide range of pathogens at the cellular level, which is known as systemic immunity. This mode of resistance has been known for more than 100 years, but the key events that stimulate that resistance have remained a mystery.

Related Articles


The findings of the UK College of Agriculture researchers, led by Pradeep Kachroo and Aardra Kachroo, were published online in Nature Genetics March 27. Researchers from the UK Department of Statistics and Washington State University also contributed to the article.

"If you can generate systemic immunity, you can have great benefits in disease resistance," Pradeep Kachroo said. "It is particularly gratifying to be able to describe a mechanism for a type of immunity; pioneering studies were incidentally carried out by our own emeritus faculty, Joe Kuc."

Using soybeans and Arabidopsis, a model laboratory plant, the scientists were able to identify the metabolite glycerol-3-phosphate as a key mobile regulator of systemic immunity. A metabolite is a substance produced in the body through normal metabolic processes. The glycerol-3-phosphate transforms into an unknown compound and uses a protein, called DIR1 to signal systemic immunity. Scientists already identified the protein as a necessary component to trigger systemic immunity.

"The metabolite and protein are dependent on each other to transport immunity from one location in the plant tissue to the other," Pradeep Kachroo said. "Metabolite levels increase in plant tissues after the plant has been inoculated by a pathogen."

While the research was conducted on plants, Pradeep Kachroo said all organisms have a similar process of triggering systemic immunity.

"The metabolite is a highly conserved compound in all species across the board," Pradeep Kachroo said. "Another great thing is increased levels of this metabolite do not affect plant productivity, unlike other known inducers of systemic immunity."

He said the metabolite could be an effective tool to control plant diseases and enhance pathogen tolerance in plants.

In 2008, these UK plant pathologists discovered that the same metabolite was a key component in organisms' basal resistance, which allows organisms to have strong immune systems. They wondered whether there was a connection between the metabolite and systemic immunity, which led them to their current research.

Their research was funded by the National Science Foundation's Division of Integrative Organismal Systems. The plant pathologists will continue to study the process that induces systemic immunity.

"We want to know how glycerol-3-phosphate is metabolized in plants and identify various compounds derived from glycerol-3-phosphate," Pradeep Kachroo said. "We also want to know how the metabolite relates other molecules known to be important for systemic immunity."


Story Source:

The above story is based on materials provided by University of Kentucky. Note: Materials may be edited for content and length.


Journal Reference:

  1. Bidisha Chanda, Ye Xia, Mihir Kumar Mandal, Keshun Yu, Ken‐Taro Sekine, Qing-ming Gao, Devarshi Selote, Yanling Hu, Arnold Stromberg, Duroy Navarre, Aardra Kachroo, Pradeep Kachroo. Glycerol-3-phosphate is a critical mobile inducer of systemic immunity in plants. Nature Genetics, 2011; DOI: 10.1038/ng.798

Cite This Page:

University of Kentucky. "New key to plant disease resistance discovered." ScienceDaily. ScienceDaily, 28 March 2011. <www.sciencedaily.com/releases/2011/03/110328101609.htm>.
University of Kentucky. (2011, March 28). New key to plant disease resistance discovered. ScienceDaily. Retrieved December 18, 2014 from www.sciencedaily.com/releases/2011/03/110328101609.htm
University of Kentucky. "New key to plant disease resistance discovered." ScienceDaily. www.sciencedaily.com/releases/2011/03/110328101609.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

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
Rover Finds More Clues About Possible Life On Mars

Rover Finds More Clues About Possible Life On Mars

Newsy (Dec. 17, 2014) NASA's Curiosity rover detected methane on Mars and organic compounds on the surface, but it doesn't quite prove there was life ... yet. Video provided by Newsy
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