Featured Research

from universities, journals, and other organizations

Rice blast infection mechanism uncovered

Date:
June 21, 2012
Source:
University of Exeter
Summary:
Scientists have made a new discovery that they hope might lead to effective control of rice blast disease. Rice blast is the most serious disease of cultivated rice and affects all the rice-growing regions of the world, causing losses of up to 30 percent of the global rice harvest.

Scientists at the University of Exeter have made a new discovery that they hope might lead to effective control of rice blast disease.

Rice blast is the most serious disease of cultivated rice and affects all the rice-growing regions of the world, causing losses of up to 30% of the global rice harvest.

Yasin Dagdas and colleagues studied the rice blast fungus, which develops a pressurised infection cell, called an appressorium to rupture the rice leaf cuticle. The appressorium generates extreme pressure, estimated to be 40 times that of a car tyre. Dagdas and colleagues, who work under the supervision of Prof. Nick Talbot, have identified how the fungus channels its pressure to form a narrow infection peg that breaches the rice leaf surface. Their work implicates a specialised group of proteins called septins in plant infection for the first time. These proteins may be important to allow the rigid, pressurised cell to focus force at the point of plant infection.

Yasin Dagdas said: "This is another step in our journey to discover how this devastating fungus works and we hope, in the future, may help prevent the destruction of so much of the world's rice production."

Published June 21 2012 in the journal Science, the team came to its conclusion by analysing the septin gene family and its role in re-organisation of the infection cell, so that it grows an infection peg that extends through the rice cuticle and into rice tissue. The project used live-cell imaging, molecular genetics and genomic procedures and represents a significant breakthrough in our understanding of the plant infection process by cereal-infecting fungi. This could ultimately impact upon control of a range of rice, wheat and barley diseases.

Speaking about the discovery, Prof. Nick Talbot said "Rice blast is a terrible disease, affecting some of the poorest regions of the world. We hope that this discovery will allow us to understand plant infection in more detail and we can then apply the knowledge to provide better solutions to farmers in controlling blast outbreaks."


Story Source:

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


Journal Reference:

  1. Y. F. Dagdas, K. Yoshino, G. Dagdas, L. S. Ryder, E. Bielska, G. Steinberg, N. J. Talbot. Septin-Mediated Plant Cell Invasion by the Rice Blast Fungus, Magnaporthe oryzae. Science, 2012; 336 (6088): 1590 DOI: 10.1126/science.1222934

Cite This Page:

University of Exeter. "Rice blast infection mechanism uncovered." ScienceDaily. ScienceDaily, 21 June 2012. <www.sciencedaily.com/releases/2012/06/120621151539.htm>.
University of Exeter. (2012, June 21). Rice blast infection mechanism uncovered. ScienceDaily. Retrieved July 31, 2014 from www.sciencedaily.com/releases/2012/06/120621151539.htm
University of Exeter. "Rice blast infection mechanism uncovered." ScienceDaily. www.sciencedaily.com/releases/2012/06/120621151539.htm (accessed July 31, 2014).

Share This




More Plants & Animals News

Thursday, July 31, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Raw: Thousands Flocking to German Crop Circle

Raw: Thousands Flocking to German Crop Circle

AP (July 30, 2014) Thousands of people are trekking to a Bavarian farmer's field to check out a mysterious set of crop circles. (July 30) Video provided by AP
Powered by NewsLook.com
Concern Grows Over Worsening Ebola Crisis

Concern Grows Over Worsening Ebola Crisis

AFP (July 30, 2014) Pan-African airline ASKY has suspended all flights to and from the capitals of Liberia and Sierra Leone amid the worsening Ebola health crisis, which has so far caused 672 deaths in Guinea, Liberia and Sierra Leone. Duration: 00:43 Video provided by AFP
Powered by NewsLook.com
At Least 20 Chikungunya Cases in New Jersey

At Least 20 Chikungunya Cases in New Jersey

AP (July 30, 2014) At least 20 New Jersey residents have tested positive for chikungunya, a mosquito-borne virus that has spread through the Caribbean. (July 30) Video provided by AP
Powered by NewsLook.com
Xtreme Eating: Your Daily Caloric Intake All On One Plate

Xtreme Eating: Your Daily Caloric Intake All On One Plate

Newsy (July 30, 2014) The Center for Science in the Public Interest released its 2014 list of single meals with whopping calorie counts. 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:
from the past week

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