Key component found in plants’ ability to resist pathogens

decrease font size  Resize text   increase font size       Printer-friendly version of this article Printer-friendly version of this article

A team of University of Kentucky researchers led by plant pathologists Aardra and Pradeep Kachroo have discovered an important component in plants’ ability to resist bacterial and viral pathogens.

The Kachroos, who are wife and husband, study the RNA silencing pathway in plants as a means of controlling bacterial and viral disease pathogens. While this pathway was first discovered in plants, it exists in all sorts of organisms. Through this silencing pathway, a plant can trigger one of two types of resistance to fend off disease. In the basal type of resistance, the plant will recognize the pathogen’s RNA and destroy it. In the other, R proteins in the plant recognize certain pathogens and destroy them before they gain a foothold.

“For many years, these two forms of resistance were thought to have some sort of connection, but no one knew what that connection was,” said Pradeep Kachroo, who works in the UK College of Agriculture, Food and Environment’s Department of Plant Pathology.

Shifeng Zhu, Rae-Dong Jeong and Gah-Hyun Lim, all researchers in the Kachroos’ labs, found that the component DRB4 plays a critical role in both forms of resistance, but has a different role in each.

“If plants contain the R protein then they do not need to activate basal resistance,” Pradeep Kachroo said. “This process is much more robust in controlling the pathogen than basal resistance.”

It would be ideal for all plants to use R proteins to control pathogens, but not all plants have them.

“So, if we can recognize the steps subsequent to activating resistance and understand how they work, then we can target these individual steps to activate resistance when it is most essential,” Pradeep Kachroo said. “That would be easy enough to do in any plant since those subsequent components are usually present in all plants irrespective of whether or not they contain the R protein.”

Gaining a better understanding of the necessary components to disease resistance in plants could help in the development of resistant varieties that could help farmers and home gardeners better manage diseases.

The study was funded by the National Science Foundation’s Division Integrative Organismal Systems and recently published in Cell Reports.


Buyers Guide

Doyle Equipment Manufacturing Co.
Doyle Equipment Manufacturing prides themselves as being “The King of the Rotary’s” with their Direct Drive Rotary Blend Systems. With numerous setup possibilities and sizes, ranging from a  more...
A.J. Sackett Sons & Company
Sackett Blend Towers feature the H.I.M, High Intensity Mixer, the next generation of blending and coating technology which supports Precision Fertilizer Blending®. Its unique design allows  more...
R&R Manufacturing Inc.
The R&R Minuteman Blend System is the original proven performer. Fast, precise blending with a compact foot print. Significantly lower horsepower requirement. Low inload height with large  more...
Junge Control Inc.
Junge Control Inc. creates state-of-the-art product blending and measuring solutions that allow you to totally maximize operating efficiency with amazing accuracy and repeatability, superior  more...
Yargus Manufacturing
The flagship blending system for the Layco product line is the fully automated Layco DW System™. The advanced technology of the Layco DW (Declining Weight) system results in a blending  more...
Yargus Manufacturing
The LAYCOTE™ Automated Coating System provides a new level of coating accuracy for a stand-alone coating system or for coating (impregnating) in an automated blending system. The unique  more...
John Deere
The DN345 Drawn Dry Spreader can carry more than 12 tons of fertilizer and 17.5 tons of lime. Designed to operate at field speeds up to 20 MPH with full loads and the G4 spreader uniformly  more...
Force Unlimited
The Pro-Force is a multi-purpose spreader with a wider apron and steeper sides. Our Pro-Force has the most aggressive 30” spinner on the market, and is capable of spreading higher rates of  more...
BBI Spreaders
MagnaSpread 2 & MagnaSpread 3 — With BBI’s patented multi-bin technology, these spreaders operate multiple hoppers guided by independent, variable-rate technology. These models are built on  more...


Comments (0) Leave a comment 

Name
e-Mail (required)
Location

Comment:

characters left


X-TENDED REACH GRAIN CARTS

YOUR BEST HARVEST IS NOW WITHIN REACH J&M introduces their patented line of X-tended Reach grain carts, featuring a frontfolding single ... Read More

View all Products in this segment

View All Buyers Guides

Feedback Form
Feedback Form