Featured Research

from universities, journals, and other organizations

Plants Choose Ammunition Carefully

Date:
September 19, 2009
Source:
NWO (Netherlands Organization for Scientific Research)
Summary:
Plants are not as defenseless as they may seem. Various plant hormones work together to specifically fend off attacks. Botanists have now shown how these hormones cooperate. By 'consulting' with each other plant hormones determine which defense mechanism they shall set in motion.

Plants are not as defenceless as they may seem. Various plant hormones work together to specifically fend off attacks. Dutch-sponsored researcher Antonio Leon-Reyes has now shown how these hormones cooperate. By 'consulting' with each other plant hormones determine which defence mechanism they shall set in motion.

Related Articles


Leon-Reyes investigated how three plant hormones - salicylic acid (SA), jasmonic acid (JA) and ethylene (ET) - cooperate with each other to initiate the correct defence response. The biologist used the model plant Arabidopsis thalania (thale cress) to analyse the communication lines between hormones. He discovered that JA is under the control of SA but if JA and ET cooperate then JA no longer 'listens' to SA.

The right defence

Plants are confronted with various external attacks. Fungi, bacteria, viruses and insects, such as caterpillars and aphids, can inflict serious damage on a plant. The three different hormones all respond to these attacks in their own way. SA ensures that pathogens feeding on living plant tissue are tackled, whereas JA and ET tackle pathogens that live on dead tissue and suppress feeding by insects.

Switching on the defence mechanism requires a lot of energy from the plant and can go to the cost of growth and reproduction. It is therefore vital that the plant only initiates the defence mechanisms required. Leon-Reyes discovered that if the SA response was activated just before or at the same time as the JA response, the defence mechanisms regulated by JA are suppressed. Yet if the JA response was activated at the same time as the ET response then SA could no longer suppress JA.

Each year billions of euros are spent on chemical pesticides to control diseases and plagues. Leon-Reyes's discoveries could make an important contribution to new crop protection methods. His research was part of Cornι Pieterse's research project. Pieterse received a Vici grant in 2004 from NWO's Innovational Research Incentives Scheme for his research into the self-defence mechanisms of plants.


Story Source:

The above story is based on materials provided by NWO (Netherlands Organization for Scientific Research). Note: Materials may be edited for content and length.


Cite This Page:

NWO (Netherlands Organization for Scientific Research). "Plants Choose Ammunition Carefully." ScienceDaily. ScienceDaily, 19 September 2009. <www.sciencedaily.com/releases/2009/09/090902122446.htm>.
NWO (Netherlands Organization for Scientific Research). (2009, September 19). Plants Choose Ammunition Carefully. ScienceDaily. Retrieved March 27, 2015 from www.sciencedaily.com/releases/2009/09/090902122446.htm
NWO (Netherlands Organization for Scientific Research). "Plants Choose Ammunition Carefully." ScienceDaily. www.sciencedaily.com/releases/2009/09/090902122446.htm (accessed March 27, 2015).

Share This


More From ScienceDaily



More Plants & Animals News

Friday, March 27, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Raw: Lioness Has Rare Five-Cub Litter

Raw: Lioness Has Rare Five-Cub Litter

AP (Mar. 27, 2015) — A lioness in Pakistan has given birth to five cubs, twice the usual size of a litter. Queen gave birth to two other cubs just nine months ago. (March 27) Video provided by AP
Powered by NewsLook.com
Jockey Motion Tracking Reveals Racing Prowess

Jockey Motion Tracking Reveals Racing Prowess

Reuters - Innovations Video Online (Mar. 26, 2015) — Using motion tracking technology, researchers from the Royal Veterinary College (RVC) are trying to establish an optimum horse riding style to train junior jockeys, as well as enhance safety, health and well-being of both racehorses and jockeys. Matthew Stock reports. Video provided by Reuters
Powered by NewsLook.com
Bear Cubs Tumble for the Media

Bear Cubs Tumble for the Media

Reuters - Light News Video Online (Mar. 26, 2015) — Two Andean bear cubs are unveiled at the U.S. National Zoo in Washington, D.C. Alicia Powell reports. Video provided by Reuters
Powered by NewsLook.com
Botswana Talks to End Illegal Wildlife Trade

Botswana Talks to End Illegal Wildlife Trade

AFP (Mar. 25, 2015) — Experts are gathering in Botswana to try to end the illegal wildlife trade that is decimating populations of elephants, rhinos and other threatened species. Duration: 01:05 Video provided by AFP
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