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:5/19/2015)... Research and Markets ( ... the  "Genetic Testing Market Outlook 2018"  report ... ,A recent report, Genetic Testing Market Outlook ... current and future genetic testing market. A ... principles and types are covered in this ...
(Date:5/11/2015)... May 11, 2015  Through a well-rounded UAS delegation representing ... had a strong showing at AUVSI,s Unmanned 2015 conference last ... Ohio,s UAS industry met with over ... all points along the UAS ecosystem. "Our ... Vice President for Aerospace Rich Knoll . "If you ...
(Date:5/6/2015)... LifeBEAM, a developer of bio-sensing technology, and ... that they will expand their partnership in bio-sensing sports ... helmet and the first joint project between the two ... order to give cyclists more style choices and meet ... Lazer announced their plan to release a new generation ...
Breaking Biology News(10 mins):Global Genetic Testing Market Outlook 2018 2Ohio Flies High at Unmanned '15, Sets Stage for Ohio UAS Conference 2LifeBEAM and Lazer Announce Expanded Partnership in Bio-Sensing Sports Gear 2LifeBEAM and Lazer Announce Expanded Partnership in Bio-Sensing Sports Gear 3
(Date:5/21/2015)... YORK , May 21, 2015  Susan ... Research (FPWR), a nonprofit organization dedicated to supporting ... Prader-Willi syndrome (PWS), announced today that FPWR has ... and Irina Shaulov contributed $1 million ... clinical initiatives.  ...
(Date:5/21/2015)... Calif. , May 21, 2015  The ... Orrin Hatch (R-UT) and Amy Klobuchar ... Extensions Now Accelerating Cures & Treatments, or OPEN ... rare disease patient advocacy organizations, this bipartisan legislation ... and affordable medicines to rare disease patients by ...
(Date:5/21/2015)... May 21, 2015 Patent Offering, The ... for diagnostic or therapeutic imaging within a body lumen ... an endoscope having a low cost, single-use disposable illumination ... date was October 18, 2013 and the patent approval ... enables the physician to customize the lighting and magnification ...
(Date:5/21/2015)... Research and Markets ( http://www.researchandmarkets.com/research/84975r/2015_global ... "2015 Global Survey on Flow Cytometry Adoption Trends" ... primary goal of this research is to analyze ... Key information the survey seeks to collect include ... predominantly used applications for flow cytometers, respondents, most ...
Breaking Biology Technology:The Foundation for Prader-Willi Research Receives $1M Contribution in Support of Clinical Initiatives 2Advocates Cheer Senate Leaders for Introducing Bipartisan Bill to Increase Number of Rare Disease Treatments 2IpAuctions™ Presents The Worlds Smallest Disposable Illuminated Endoscope For Auction 2IpAuctions™ Presents The Worlds Smallest Disposable Illuminated Endoscope For Auction 3Global Survey on Flow Cytometry Adoption Trends 2015 2
Cached News: