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:5/24/2017)... ... ... Patients who want to receive cosmetic dentistry procedures such as Invisalign® or ... a consultation, with or without a referral. Dr. Bedich enjoys improving the appearance of ... Dr. Bedich offers a variety of cosmetic dentistry services at his practice that are ...
(Date:5/24/2017)... ... May 24, 2017 , ... ... reproductive tract in which the endometrial lining of the uterus spreads into ... pain. Patients experiencing painful intercourse, painful periods, pelvic pain, or irregular bleeding ...
(Date:5/24/2017)... NY (PRWEB) , ... May 24, 2017 , ... ... the practice is offering holistic pediatric dentistry options for its patients on Long ... of the patient’s entire physical well being, and is one of the biggest ...
(Date:5/24/2017)... ... 2017 , ... Technique, technique, technique – with a dash of common sense. ... training and exercise or simply lifting heavy objects, advises Dr. Kaliq Chang, interventional pain ... Chang says. “Improper technique in lifting anything heavy or an attempt to lift too ...
(Date:5/23/2017)... ... May 23, 2017 , ... Allegheny Health Network ... The Alexis Joy D’Achille Center for Women’s Behavioral Health at West Penn Hospital ... western Pennsylvania for women suffering from pregnancy-related depression. Construction of the Center is ...
Breaking Medicine News(10 mins):
(Date:5/10/2017)... , May 10, 2017 Global Health Intelligence ... Latin America , published its 2017 ranking of ... is based on extensive data analysis from GHI,s hospitals ... hospitals database for the region. The GHI database covers 86% ... offering more than 130 data points for each institution in ...
(Date:5/9/2017)... , May 9, 2017  Demonstrating its ... board of directors for the Pharmaceutical Research and ... for membership. Biopharmaceutical companies will now have to ... order to be eligible to join PhRMA. ... the board is sending a clear message that ...
(Date:5/6/2017)... Texas , May 5, 2017   Provista , ... with more than 200,000 customers, today announced Jim Cunniff ... a wealth of executive and business experience to Provista, including ... compounding pharmacy in California . He assumed ... "Jim is a great fit for Provista," says ...
Breaking Medicine Technology: