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:7/30/2014)... A deep-sea octopus protected and tended her eggs until ... published July 30, 2014 in the open-access journal ... Aquarium Research Institute and colleagues. , Octopuses typically have ... females protect and take care of their fertilized eggs ... eggs for 1 to 3 months, but little is ...
(Date:7/30/2014)... the University of Helsinki and the Universitat Autnoma de ... morphological changes which have taken millions of years to ... development of mice teeth, induced in the laboratory, scientists ... those observed in the fossil registry of rodent species ... , To modify the development of their teeth, the ...
(Date:7/30/2014)... associate professor Andrew S. Mount, performed cutting-edge research on ... novel anti-fouling paint for ships and boats and also ... team,s findings, published in Nature Communications ... attaches to a wide variety of surfaces using highly ... underwater heavy-duty adhesive. , "In previous research, we were ...
Breaking Biology News(10 mins):Deep-sea octopus has longest-known egg-brooding period 2Scientists reproduce evolutionary changes by manipulating embryonic development of mice 2Study: Marine pest provides advances in maritime anti-fouling and biomedicine 2
... professors are leading research teams that will work ... and the Caribbean to increase food production, improve ... change. The projects are part of the Sustainable ... Program (SANREM CRSP), a $15 million, five-year program ...
... study from Children,s Hospital Boston and the Boston-based Autism Consortium ... known as chromosomal microarray analysis, has about three times the ... (ASDs) than standard tests. Publishing in the April issue of ... that CMA become part of the first-line genetic work-up for ...
... WINSTON-SALEM, N.C. Vitamin D is quickly becoming the "go-to" ... to atherosclerosis. However, new evidence from a Wake Forest University ... those with low levels may have different effects based on ... do harm. The study is the first to ...
Cached Biology News:Researchers introducing sustainable agriculture practices to improve food security 2Researchers introducing sustainable agriculture practices to improve food security 3A better genetic test for autism 2A better genetic test for autism 3Vitamin D levels have different effects on atherosclerosis in blacks and whites 2Vitamin D levels have different effects on atherosclerosis in blacks and whites 3
(Date:7/30/2014)... Geneva, Switzerland (PRWEB) July 30, 2014 ... proven technologies for biologic drug discovery and mammalian cell ... SURE CHO-Mplus Libraries ™ will be presented at ... conference being held, September 8 – 10, 2014 ... Berkeley, California. , The following abstract will be ...
(Date:7/30/2014)... , July 30, 2014   Wyle ... the Fully Integrated Lifecycle Mission Support Services (FILMSS) ... Administration (NASA). Under the terms of the contract, ... Center at Moffett Field, Calif. In particular, Wyle ... bioscience flight development projects on the International Space ...
(Date:7/30/2014)... July 30, 2014 July 30, 2014. ... a biotechnology firm that provides DNA-based authentication and security ... Ph.D. Vice President of Life Sciences, a newly created ... , Dr. Hogan will lead APDN’s drive to build ... with biotech and healthcare customers, provide guidance to APDN’s ...
(Date:7/30/2014)... (PRWEB) July 30, 2014 Vycom announces ... of products, designed to meet Factory Mutual (FM) 4910 ... materials such as wet benches, process tools, fume hoods, ... safety and damage to semiconductor wafers used in electronic ... a flame-retardant PVC solution with excellent workability and superior ...
Breaking Biology Technology:Selexis SA to Present New Data and a Case Study at IBC’s Cell Line Development and Engineering Conference 2Selexis SA to Present New Data and a Case Study at IBC’s Cell Line Development and Engineering Conference 3Wyle Wins NASA's Fully Integrated Lifecycle Mission Support Services Contract 2Dr. Michael E. Hogan, Ph.D., Joins Applied DNA Sciences as Vice President, Life Sciences 2Dr. Michael E. Hogan, Ph.D., Joins Applied DNA Sciences as Vice President, Life Sciences 3Vycom Announces Flametec® Thermax PVC (FM4910 Listed) For a Variety of Clean Room Applications with Excellent Workability and Aesthetics 2
... NORTH BILLERICA, Mass., Sept. 9 Seahorse Bioscience, Inc., the ... cellular bioenergetics, today announced it will present data with the ... Flux Analyzer in revealing the effects of KSR1 and nutrients ... The data will appear in two posters at the AACR ...
... , NEW YORK, Sept. 9 ... Vice President and General Manager of Informatics at Thermo Fisher ... HUNT Research Center and Biobank, about data integration: the benefits ... life sciences companies. , , ...
... , WATERTOWN, Mass., Sept. 9 EnVivo Pharmaceuticals ... vice president and chief financial officer. DiPalma is responsible ... and operations. , , "EnVivo has grown ... to help better manage our broad pipeline and increasing business ...
Cached Biology Technology:Seahorse Bioscience to Present Novel Cellular Bioenergetics Data in Collaboration with University of Nebraska at AACR Metabolism and Cancer Conference 2Don't Wait to Innovate: Future Pharmaceuticals Magazine Releases Its Issue on Innovation in IT, Cell-Based Therapy and Supply Chains 2EnVivo Pharmaceuticals Names Stephen DiPalma Chief Financial Officer 2
... is most widely used in combination ... differentially stain nucleic acids following polyacrylamide ... solution, Pyronin Y stains RNA red, ... Chem comp: Dye content ...
... The loxP-cm-loxP cassette is ... prokaryotic cells. The prokaryotic promoter ... resistance is a slightly modified version ... higher transcription efficiency than the generally ...
... Agencourt AMPure is a ... that requires no sample transfer, ... efficiently purifies small and large ... or 384-well microplates. Agencourt AMPure ...
... is a magnetic bead-based PCR ... sample transfer, centrifugation or filtration ... and large PCR extension products ... Agencourt AMPure can easily be ...
Biology Products: