Navigation Links
Fast growth, low defense -- plants facing a dilemma
Date:1/28/2011

This release is available in German.

Plants are attacked by a multitude of insects and mammals. As defense against these herbivores they developed complex defense mechanisms over the course of evolution: spines, thorns, leaf hairs and a number of toxic chemical substances. For decades it has been controversially discussed whether the production of defense traits incurs costs to the plants. Now, using a new method the ecologists and plant biologists of the University of Zrich together with their American colleagues demonstrate these costs accurately in a Proceedings of the Royal Society article.

For their study, the researchers planted different knockout-mutants of the same genotype of the model plant Arabidopsis thaliana. They then harvested a subset of these plants in evenly distributed intervals to measure the biomass growth over the whole plant life. Mutants with suppressed defense mechanisms showed an increased growth rate Tobias Zst explains the result of his study. But the faster growth comes at an added cost: aphids reproduce faster on these plants than on slow growing plants with intact defense mechanisms. This is a result of the fact that fast growing plants provide more resources to the herbivore than slow growing plants in the same amount of time.

The study shows that natural resistance is often not compatible with fast growth. This finding is of great importance for agricultural crops: These crops have been selected for high yield and as a consequence have very low natural resistance to herbivores, consequentially requiring high input of insecticides.


'/>"/>

Contact: Tobias Zst
tobias.zuest@ieu.uzh.ch
41-446-356-105
University of Zurich
Source:Eurekalert

Page: 1

Related biology news :

1. Findings overturn old theory of phytoplankton growth, raise concerns for ocean productivity
2. Black or blue? Mulch color affects okra growth, yield
3. Newly identified growth factor promotes stem cell growth, regeneration
4. Master gene SRC-3 enables breast cancer growth, invasion
5. Plastics chemical retards growth, function of adult reproductive cells
6. ASM Biodefense and Emerging Diseases Research Meeting
7. Defense mechanism against bacteria and fungi deciphered
8. Scientists pinpoint key defense against parasite infection
9. SAIC Awarded $23 Million Task Order by Defense Biometrics Identity Management Agency
10. Lockheed Martin and ZyGEM Accelerate DNA Identification for Law Enforcement, Homeland Security and Defense Communities
11. Lockheed Martin and ZyGEM Accelerate DNA Identification for Law Enforcement, Homeland Security and Defense Communities
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:11/16/2016)... , Nov. 16, 2016 Sensory Inc ... and security for consumer electronics, and VeriTran ... and retail industry, today announced a global partnership ... way to authenticate users of mobile banking and ... TrulySecure™ software which requires no specialized biometric ...
(Date:11/14/2016)... , Nov. 14, 2016  Based on ... market, Frost & Sullivan recognizes FST Biometrics ... Award for Visionary Innovation Leadership. FST Biometrics ... biometric identification market by pioneering In Motion ... for instant, seamless, and non-invasive verification. This ...
(Date:6/22/2016)... -- On Monday, the Department of Homeland Security (DHS) ... for the Biometric Exit Program. The Request for Information ... explains that CBP intends to add biometrics to confirm ... States , in order to deter visa overstays, ... Logo - http://photos.prnewswire.com/prnh/20160622/382209LOGO ...
Breaking Biology News(10 mins):
(Date:12/8/2016)... ... December 08, 2016 , ... KBioBox llc announced today the ... KbioBox developed a sophisticated “3 click” gene dditing off target analysis program and ... website, https://www.kbiobox.com/ and powered by the company’s proprietary BioEngine. Scientists, ...
(Date:12/8/2016)... Ames, Iowa (PRWEB) , ... December 08, 2016 , ... ... of asynchronous approvals for biotech crops. The authors focus on the economic effects in ... the global approval of new biotech crops and the resultant risk of low level ...
(Date:12/8/2016)... , Dec. 8, 2016  HedgePath Pharmaceuticals, ... that discovers, develops and plans to commercialize innovative ... shares of common stock were approved for trading ... begin trading on the OTCQX, effective today, under ... for the OTCQX market, companies must meet high ...
(Date:12/8/2016)... to fuel Philadelphia,s innovative digital ... Southeastern Pennsylvania (" Ben Franklin "); Independence ... Cross; and Safeguard Scientifics ("Safeguard") (NYSE: SFE ... funding initiative over a four year period to grow ... burgeoning economic vitality in digital health, Ben Franklin ...
Breaking Biology Technology: