HOME >> BIOLOGY >> NEWS
Elevated CO2 in atmosphere weakens defenses of soybeans to herbivores

In research to be presented at the annual meeting of the American Society of Plant Biologists in Chicago (July 7-11, 2007), scientists will show that elevated CO2 may negatively impact the relationship between some plants and insects. Elevated CO2 is considered to be a serious catalyst of global change. Its effects can be felt throughout the ecosystem, including the insect-plant food chain link. Safeguarding highly-usable crops is of great importance to many local and national economies.

Many plants have inherent enzyme-based defenses that are released during insect attack. This study found that when soybeans (Glycine max) were exposed to elevated amounts of CO2 the plants became more susceptible to attack by Japanese beetles (Popillia japonica). Furthermore, as these beetles consumed the weakened soybeans, the insects invasive abilities were intensified.

Dr. Jorge Zavala, Sr. of the Institute for Genomic Biology at the University of Illinois, and his colleagues conducted tests in which they evaluated this herbivorous attack-defense cycle. They studied soybeans grown in traditional field conditions but with additional exposure to ambient CO2. The results showed that the amount of cysteine proteinase inhibitors (CystPls) expressed in the genes decreased when soybeans were exposed to elevated CO2. CystPls is naturally produced by soybeans when they are under insect attack. It inhibits further attack once the invader has ingested it.

Our results suggest that elevated CO2 increased the susceptibility of soybean to invasive insects by down-regulating the expression of hormones related with defense, which down-regulate the important defense CystPls against beetles, Zavala said.

Zavala also explained, Under natural field conditions, elevated CO2 not only increased susceptibility of soybean to herbivory by the invasive species Japanese beetle, but also enhanced the performance of these beetles.

The investigatio
'"/>

Contact: Brian Hyps
bhyps@aspb.org
240-354-5160
American Society of Plant Biologists
6-Jul-2007


Page: 1 2

Related biology news :

1. Elevated autoantibodies linked to preeclampsia
2. Elevated atmospheric CO2 increases soil carbon
3. Elevated temperature enhances success of viral cancer therapy
4. Elevated inflammatory enzyme, Lp-PLA2, significantly linked to ischemic stroke
5. Bacterial switch gene regulates how oceans emit sulfur into atmosphere
6. Tropical forests leak nitrogen back into atmosphere, say scientists
7. Mercury in atmosphere could be washed out more easily than earlier believed
8. Methane gyrations last 2,000 years show human influnece on atmosphere
9. U. of Colorado study shows early Earth atmosphere hydrogen-rich, favorable to life
10. Epilepsy drug eases symptoms of inherited disorder that weakens muscles
11. Aggression-related gene weakens brains impulse control circuits

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Elevated atmosphere weakens defenses soybeans herbivores

(Date:7/9/2015)... 07, 2015 Research ... of the "Biometrics for Banking; Market & ... report to their offering. The adoption ... this growth and the forecast is that by ... for companies involved in delivering biometric systems to ...
(Date:7/8/2015)... , July 8, 2015  Trovagene, Inc. (NASDAQ: ... diagnostics, today announced the launch of a study ... Precision Cancer Monitoring℠ (PCM) technology for predicting response ... or a combination of the novel immunotherapy agents ... a PD-1 inhibitor. The 50-patient study will be ...
(Date:7/2/2015)... June 25, 2015 ... addition of the "Natural Language Processing Market ... IVR, OCR, Pattern & Image Recognition) - Worldwide ... The key vendors occupying the market ... Corporation, Microsoft Corporation, NetBase Solutions, SAS Institute Inc., ...
Breaking Biology News(10 mins):Global Banking Biometrics Market 2015-2020 - Market & Technology Analysis, Adoption Strategies and Forecasts 2Global Banking Biometrics Market 2015-2020 - Market & Technology Analysis, Adoption Strategies and Forecasts 3Trovagene Initiates Study to Monitor Response to Immunotherapy in Melanoma Patients Using its Precision Cancer Monitoring Platform 2Trovagene Initiates Study to Monitor Response to Immunotherapy in Melanoma Patients Using its Precision Cancer Monitoring Platform 3Trovagene Initiates Study to Monitor Response to Immunotherapy in Melanoma Patients Using its Precision Cancer Monitoring Platform 4Natural Language Processing Market by Type (Rule-Based, Statistical, and Hybrid), Technologies (Recognition, IVR, OCR, Pattern & Image Recognition) - Worldwide Forecast to 2020 2
(Date:8/3/2015)... , Aug. 3, 2015  ArroGen Group, ... its new Fingerprint Molecular Identification™ (FMID) technology Aug. ... conference in Sacramento, Calif. ... science, will enable law enforcement agents, district attorneys ... of criminal suspects. By analyzing chemical ...
(Date:8/3/2015)... WESTWOOD, Mass. , Aug. 3, 2015  Merck ... company for innovative and top-quality high-tech products in the ... together with the US-based company Nano-C, their development and ... field of organic photovoltaics (OPV). Merck KGaA, Darmstadt, ... participate in the growing OPV sector. Novel ...
(Date:8/3/2015)... 2015   Intrexon Corporation (NYSE: XON ... second quarter 2015 financial results after the market closes ... will host a conference call at 5:30 PM ET ... update. The conference call may be accessed ... asking to join the "Intrexon Corporation Call."  Participants may ...
(Date:7/31/2015)... , July 31, 2015 In today,s ... that help them drive positive health outcomes, improve ... source of patient care in their communities. At ... tradeshow and conference, AmerisourceBergen announced a new set ... Services Administration Organization and help independent pharmacies endure ...
Breaking Biology Technology:ArroGen Previews New Fingerprint Molecular Identification Technology 2Merck KGaA, Darmstadt, Germany, and Nano-C Present Enhanced Materials for Organic Photovoltaics 2Merck KGaA, Darmstadt, Germany, and Nano-C Present Enhanced Materials for Organic Photovoltaics 3Merck KGaA, Darmstadt, Germany, and Nano-C Present Enhanced Materials for Organic Photovoltaics 4Intrexon to Announce First Half and Second Quarter 2015 Financial Results and Host Conference Call on August 10th 2AmerisourceBergen Unveils Suite of Enhanced Capabilities for Independent Pharmacies at ThoughtSpot 2015 2AmerisourceBergen Unveils Suite of Enhanced Capabilities for Independent Pharmacies at ThoughtSpot 2015 3
Cached News: