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:3/20/2015)... , Mar. 20, 2015 Research and Markets ... addition of the "India Sensors Market Forecast ... The sensor market is projected to ... Consumer electronics, automotive, industrial and healthcare ... in the country. In addition, adoption of MEMS ...
(Date:3/20/2015)... 20, 2015 NXT-ID, Inc. (NASDAQ: NXTD ... focused on the growing mobile commerce market, announces its ... of the products featured in 2015 "I Want That" ... PM EST on the DIY Network.   ... Vegas , site of the 2015 International CES ...
(Date:3/19/2015)... , March 19, 2015  NXT-ID, Inc. (NASDAQ: ... company focused on the growing mobile commerce market, announces its ... a news clip that aired this week on ... . In a segment "The Next Great Thing", ... ,a new way to pay, and ,a really big breakthrough ...
Breaking Biology News(10 mins):India Sensors Market Forecast and Opportunities 2020 - STMicroelectronics held the largest share in 2014 2India Sensors Market Forecast and Opportunities 2020 - STMicroelectronics held the largest share in 2014 3NXT-ID's Wocket Biometric Smart Wallet to Air on "I Want That" International CES Special 2NXT-ID's Wocket Biometric Smart Wallet to Air on "I Want That" International CES Special 3NXT-ID's Wocket Smart Wallet Featured on Fox News Segment, "The Next Great Thing" 2NXT-ID's Wocket Smart Wallet Featured on Fox News Segment, "The Next Great Thing" 3
(Date:3/30/2015)... March 29, 2015 A two-day workshop ... States and plenary talks by four leading photonics researchers ... + Optoelectronics next month in Prague, Czech Republic. ... 17 conferences alongside a two-day exhibition. Sponsored by ... the event will run 13-16 April in the Clarion ...
(Date:3/30/2015)... , March 30, 2015  Naldemedine, an ... development by Shionogi & Co., Ltd., met its ... study (COMPOSE I) for the treatment of opioid-induced ... pain receiving opioid therapy. Study results showed that ... significantly improved the frequency of spontaneous bowel movement ...
(Date:3/30/2015)... and MADISON, Wis. , March ... Nakajima ,) (TSE: 4901) ("Fujifilm") and Cellular Dynamics International, ... ICEL ) ("CDI"), a leading developer and manufacturer of ... specifications, today announced that the two companies have entered ... via an all-cash tender offer to be followed by ...
(Date:3/29/2015)... 2015  Caris Life Sciences® today announced ... cell cervical cancer (SCCC) that shows multiplatform ... company,s panomic, comprehensive tumor profiling service, identified high ... explain sensitivities and resistance to common drug ... biomarkers may guide treatment strategies in rare, ...
Breaking Biology Technology:Laser Energy Advances Among Reports Set for SPIE Optics + Optoelectronics 2Laser Energy Advances Among Reports Set for SPIE Optics + Optoelectronics 3Shionogi & Co., Ltd. Announces That Naldemedine Meets Primary Endpoint In A Phase 3 Study For The Treatment Of Opioid-Induced Constipation 2Shionogi & Co., Ltd. Announces That Naldemedine Meets Primary Endpoint In A Phase 3 Study For The Treatment Of Opioid-Induced Constipation 3Fujifilm Holdings to Acquire Cellular Dynamics International, Inc. 2Fujifilm Holdings to Acquire Cellular Dynamics International, Inc. 3Fujifilm Holdings to Acquire Cellular Dynamics International, Inc. 4Fujifilm Holdings to Acquire Cellular Dynamics International, Inc. 5Fujifilm Holdings to Acquire Cellular Dynamics International, Inc. 6Fujifilm Holdings to Acquire Cellular Dynamics International, Inc. 7Fujifilm Holdings to Acquire Cellular Dynamics International, Inc. 8Study Using Caris Molecular Intelligence Multiplatform Tumor Profiling Identifies Potential Treatment Strategies for Small Cell Cervical Cancer 2Study Using Caris Molecular Intelligence Multiplatform Tumor Profiling Identifies Potential Treatment Strategies for Small Cell Cervical Cancer 3
Cached News: