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:10/13/2017)... ... October 13, 2017 , ... Talented host, actor Rob ... sciatica in a new episode of "Success Files," which is an award-winning educational ... and investigates each subject in-depth with passion and integrity. , Sciatica occurs when ...
(Date:10/13/2017)... ... October 13, 2017 , ... “America On The Brink”: the Christian history of ... Brink” is the creation of published author, William Nowers. Captain Nowers and his ... veteran, he spent thirty years in the Navy. Following his career as a ...
(Date:10/12/2017)... , ... October 12, 2017 , ... Planet Fitness, one ... U.S., announced today its plans to open a flagship location in Covington, LA at ... former Rooms To Go store next to Office Depot in the Holiday Square shopping ...
(Date:10/12/2017)... ... October 12, 2017 , ... The American College of Medical Informatics (ACMI) will ... during the Opening Session of AMIA’s Annual Symposium in Washington, D.C. AMIA’s Annual ... F. Collen, a pioneer in the field of medical informatics, this prestigious award is ...
(Date:10/12/2017)... , ... October 12, 2017 , ... ... Hair Restoration, has recently contributed a medical article to the newly revamped ... Dr. Mohebi’s article spotlights the hair transplant procedure known as Follicular Unit ...
Breaking Medicine News(10 mins):
(Date:10/2/2017)... Oct. 2, 2017  Eli Lilly and Company (NYSE: ... for the third quarter of 2017 on Tuesday, October ... on that day with the investment community and media ... The conference call will begin at 9 a.m. Eastern ... a live webcast of the conference call through a ...
(Date:9/28/2017)... CHICAGO , Sept. 28, 2017 Hill-Rom ... quarter 2017 earnings conference call and webcast on Friday, ... 8:00 a.m. (EDT) and ending at approximately 8:30 a.m. ... to discussing the company,s 2017 financial performance and guidance ... growth opportunities, initiatives to enhance operational performance, and long-range ...
(Date:9/25/2017)... --  Montrium , an industry leader in powerful ... Trial Master Files & Inspection Readiness Conference ( ... Services has selected eTMF Connect to ... a leading European contract research organization (CRO), will ... enable greater collaboration with sponsors, improve compliance and ...
Breaking Medicine Technology: