Navigation Links
Insects take a bigger bite out of plants in a higher CO2 world
Date:3/24/2008

expected effect: Soybeans in the test plot exhibited more signs of insect damage than those in nearby plots. A closer inspection showed that soybeans grown at elevated CO2 levels attracted many more adult Japanese beetles, Western corn rootworms and, during outbreaks of Asian soybean aphids, more of these than soybeans in other plots.

Caterpillars and other insect larvae need nitrogen to grow and build new tissues, but adult insects can survive and reproduce on a high carbohydrate diet. So it made sense that more adults would migrate to the high CO2 plants, DeLucia said.

But did the higher sugar levels in the leaves explain the whole effect" To find the answer, the team allowed beetles to live out their lives in one of three conditions: on a high CO2 plant, on a low CO2 plant outside the Soy FACE plot, or on a low CO2 plant grown outside the test plot but which had its sugar content artificially boosted.

What we discovered was startling, DeLucia said.

The beetles on the high CO2 soybean plants lived longer, and as a result produced more offspring, than those living outside the Soy FACE plot. Even those fed a supplemental diet of sugars did not see their life span extended.

So here we were thinking that sugars were the main thing causing the beetles to feed more on these high CO2 leaves, DeLucia said. And that still may be true, but sugars arent whats causing them to live longer and have more breeding events and offspring.

The team turned its attention to the hormonal signaling pathways of the plants, focusing on a key defensive chemical the plants produced to ward off an insect attack. When insects eat their leaves, soybeans and other plants produce a hormone, jasmonic acid, that starts a chain of chemical reactions in the leaves that boost their defenses. Normally this cascade leads to the production of high levels of a compound called a protease inhibitor. When the insects ingest this enzyme, it inhibits their
'/>"/>

Contact: Diana Yates
diya@uiuc.edu
217-333-5802
University of Illinois at Urbana-Champaign
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Birds, bats and insects hold secrets for aerospace engineers
2. Ants and avalanches: Insects on coffee plants follow widespread natural tendency
3. Insects giant leap reconstructed by founder of sociobiology
4. Handbook of small grain insects available now
5. Tropical insects go the distance to inform rainforest conservation
6. Seismic images show dinosaur-killing meteor made bigger splash
7. Economists: Reduce fish catch now for bigger net profits later
8. Systems biology approach identifies nutrient regulation of biological clock in plants
9. A common genetic mechanism discovered in nitrogen-fixing plants
10. Scientists uncover a novel mechanism that regulates carbon dioxide fixation in plants
11. Gene that controls ozone resistance of plants could lead to drought-resistant crops
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Insects take a bigger bite out of plants in a higher CO2 world
(Date:7/28/2014)... About 100 drugs already approved by the U.S. Food ... prevent the growth of certain bacterial pathogens inside human ... Mediterranean spotted fever. The findings, published in mBio ... for Microbiology, demonstrate a new way of identifying non-antibiotic ... , A handful of drugs on the list ...
(Date:7/28/2014)... showing signs of damage from the Deepwater Horizon oil spill ... Gulf of Mexico. The discovery was made by a team ... University. A paper describing this work and additional impacts of ... be published during the last week of July 2014 in ... the National Academy of Sciences . , "The footprint of ...
(Date:7/28/2014)... the South Pole in 1911, but new research shows ... , Using data from 16 ice cores collected from ... South Pole, a group led by Joe McConnell of ... the most accurate and precise reconstruction to date of ... described in an article published today in the online ...
Breaking Biology News(10 mins):New route to identify drugs that can fight bacterial infections 2Impact of Deepwater Horizon oil spill on coral is deeper and broader than predicted 2Lead pollution beat explorers to South Pole, persists today 2Lead pollution beat explorers to South Pole, persists today 3
... ,This multidisciplinary conference on "Fibrous Protein Nanocomposites for Tailored ... the art in the design, synthesis and characterization of ... applications. The conference will be held in the ... situated at the crossroads of the Mediterranean Sea, exposed ...
... Alejandro Heuck at the University of Massachusetts Amherst recently ... of Health to map the molecular structure of a ... in mammalian cell walls. Once a channel ... plague (Yersinia pestis), dysentery (Shigella), food poisoning (Salmonella) and ...
... - Scientists could take greater strides toward crop improvement ... to understand the mechanisms that allow plants to adapt ... say. In a perspective for the journal ... genetics, and Ivan Baxter, a research computational biologist for ...
Cached Biology News:Fibrous Protein Nanocomposites Conference 2Fibrous Protein Nanocomposites Conference 3UMass Amherst biochemists developing tools to stop plague and other bacterial threats 2UMass Amherst biochemists developing tools to stop plague and other bacterial threats 3Adoption of advanced techniques could propel crop improvement 2
(Date:7/28/2014)... building materials using light, developed by researchers at the ... are often considered the realm of science fiction, such ... cloaked starships won,t be a reality for quite some ... materials with building blocks a few billionths of a ... that light flies through them, and works on large ...
(Date:7/28/2014)... , July 28, 2014 Sapphire ... technologies, today announced the appointment of biotechnology veteran ... the board of directors. Levine replaces Cynthia ,CJ, Warner, ... She will remain chairman of the company,s board of ... Sapphire Energy,s mission to deliver commercial scale algae-based fuels ...
(Date:7/28/2014)... The Workgroup for Electronic Data Interchange ... of health IT to create efficiencies in healthcare information ... Workgroup has developed an issue brief titled, “What ... The HPID Workgroup, a part of WEDI’s Strategic National ... Medicare and Medicaid Services (CMS) to identify common misuse ...
(Date:7/28/2014)... “2014 Deep Research Report ... a professional and in-depth research report on ... introduces Lubricant basic information, including Lubricant definition, ... industry overview. This research covers the international ... well as global industry analysis covering macroeconomic ...
Breaking Biology Technology:Building 'invisible' materials with light 2Sapphire Energy Announces New CEO James Levine 2Sapphire Energy Announces New CEO James Levine 3WEDI’s HPID Workgroup Announces Release of Issue Brief: “What is the Difference Between a Health Plan and Payer?” 2Lubricant Market & Adhesion Promoter Industry (Globa, China) Analysis Now Available at DeepResearchReports.com 2Lubricant Market & Adhesion Promoter Industry (Globa, China) Analysis Now Available at DeepResearchReports.com 3Lubricant Market & Adhesion Promoter Industry (Globa, China) Analysis Now Available at DeepResearchReports.com 4
... of Integrated Global Services, CAMBRIDGE, Mass., April ... under a new name, Abt Bio-Pharma Solutions, Inc., ... company will continue to,provide custom strategic, research and ... diagnostics industries,utilizing a team approach that blends decades ...
... 1, 2008 Cardium Therapeutics,(Amex: CXM ... announced today that,InnerCool has entered into a ... a leading distributor of cardiology,medical products. Under ... have,exclusive marketing, sales and distribution rights in ...
... N.J., April 1, 2008 Derma Sciences,Inc (OTC Bulletin ... that sales for 2007 were $34.1 million, an increase ... Gross margins held steady at 34,percent, but due primarily ... the,pipeline, and expanding the Company,s marketing and sales staffs, ...
Cached Biology Technology:Abt Associates Clinical Trials Announces Name Change to Abt Bio-Pharma Solutions, Inc. 2Cardium's InnerCool Therapies Unit Announces European Commercialization Agreement for Portfolio of Temperature Modulation Systems 2Cardium's InnerCool Therapies Unit Announces European Commercialization Agreement for Portfolio of Temperature Modulation Systems 3Cardium's InnerCool Therapies Unit Announces European Commercialization Agreement for Portfolio of Temperature Modulation Systems 4Cardium's InnerCool Therapies Unit Announces European Commercialization Agreement for Portfolio of Temperature Modulation Systems 5Cardium's InnerCool Therapies Unit Announces European Commercialization Agreement for Portfolio of Temperature Modulation Systems 6Cardium's InnerCool Therapies Unit Announces European Commercialization Agreement for Portfolio of Temperature Modulation Systems 7Cardium's InnerCool Therapies Unit Announces European Commercialization Agreement for Portfolio of Temperature Modulation Systems 8Cardium's InnerCool Therapies Unit Announces European Commercialization Agreement for Portfolio of Temperature Modulation Systems 9Derma Sciences Reports Fourth Quarter Year-End Results for 2007 2Derma Sciences Reports Fourth Quarter Year-End Results for 2007 3Derma Sciences Reports Fourth Quarter Year-End Results for 2007 4Derma Sciences Reports Fourth Quarter Year-End Results for 2007 5
22 x 50 mm; No. 1 thickness range: 0.13 to 0.17 mm, suitable for work in histology, cytology, urinalysis and microbiology, precleaned, store at room temperature ...
... 100%,S-Adenosyl Methionine 2.5%,Adenosine ... <0.1%,Cystathionine ... <0.1%,Glutathione ... Assay Range: 0.1 ug/ml to 1 mg/ml,(0.26 M to 2.6 mM) ...
Panomer 9 oligodeoxynucleotides are random primers that are labeled at the 5' end with our proprietary QSY 7 dye and they are useful for assessing microarray spot morphology, hybridization potential ...
Topoisomerase I, isolated from wheat germ, is an enzyme capable of removing negative supercoils from covalently closed circular DNA (1)....
Biology Products: