Navigation Links
Elevated Carbondioxide may Have Negative Impact on Ecosystem

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.

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.

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 investigation also determined the expression of genes that regulate two of the soybeans defensive hormones, jasmonic acid and ethylene. The results showed that exposure to increased CO2 lowers the plants ability to regulate its defensive hormones.

The relevancy of this study is far-reaching since soybeans are an important crop to many different economies. Furthermore, while this study is specific to one plant and insect pairing, these findings will help inform the on-going debate on CO2 exposure and global change.

Contact: Dr. Jorge Zavala, Sr. zavala@igb.uiuc.edu Katie Engen katie@aspb.org / 301.251.0560 ext 116


'"/>




Related medicine news :

1. Elevated Ozone Levels Hurt Sperm Count
2. Elevated homocysteine levels linked to congestive heart failure risk
3. Elevated LDL levels in Childhood could be Predictors of Heart Disease
4. Elevated Blood Sugar Levels A Risk Factor Of Heart Disease
5. Elevated Insulin Levels To Influence Levels Of Inflammatory Markers
6. Diabetic Type II Women Have Elevated Bone Density Mass
7. Males Lifespan Shortened By Elevated Levels Of Testosterone
8. Adults Needs to be Educated About the Dangers of Elevated TVs
9. Discovery of Elevated Amyloid Peptide levels could lead to Alzheimer’s Preventio
10. New Therapy to Treat Patients With Severely Elevated Cholesterol Levels
11. Study Attributes Elevated Liver Enzymes in HIV/hepatitis to Coinfection Rather Than Antiretrovirals
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:6/27/2016)... ... June 27, 2016 , ... TopConsumerReviews.com recently awarded their highest five-star rating to ... of individuals in the United States and Canada wear eyeglasses. Once considered to be ... vision and make a fashion statement. Even celebrities use glasses as a way of ...
(Date:6/26/2016)... , ... June 26, 2016 , ... On June 10-11, ... of the 2016 Cereal Festival and World’s Longest Breakfast Table in Battle Creek, MI, ... the city’s history as home to some of the world’s leading providers of cereal ...
(Date:6/26/2016)... , ... June 26, 2016 , ... PawPaws brand ... new product that was developed to enhance the health of felines. The formula is ... The two main herbs in the PawPaws Cat Kidney Support Supplement Soft ...
(Date:6/26/2016)... Lake Orion, Clarkston, Michigan (PRWEB) , ... June ... ... direction with respect to fertility once they have been diagnosed with endometriosis. These ... tolerable intercourse but they also require a comprehensive approach that can help for ...
(Date:6/25/2016)... ... June 25, 2016 , ... Austin residents seeking Mohs surgery services, ... Mohs Surgery and to Dr. Russell Peckham for medical and surgical dermatology. , Dr. ... skin cancer. The selective fellowship in Mohs Micrographic Surgery completed by Dr. Dorsey was ...
Breaking Medicine News(10 mins):
(Date:6/23/2016)... Research and Markets has announced the addition of the ... to 2022" report to their offering. ... financial data derived from varied research sources to present unique ... on the market during the next five years, including a ... markets, regional and country level analysis. The report provides a ...
(Date:6/23/2016)... , June 23, 2016 Research and ... News Issue 52" report to their offering. ... influenza treatment creates a favourable commercial environment for MedImmune to ... patient base that will serve to drive considerable growth for ... would serve to cap sales considerably, but development is still ...
(Date:6/23/2016)... Calif. , June 23, 2016 ... CST on Thursday, July 7, 2016 , , , , ... ) , , , , EXPERT PANELISTS:  , , ... Naik; Senior Industry Analyst, Christi Bird; Senior Industry Analyst, Divyaa Ravishankar ... The global pharmaceutical industry is witnessing an exceptional ...
Breaking Medicine Technology: