Navigation Links
Insecticide combo delivers knockout punch
Date:3/11/2008

A cocktail of insecticides containing a plant protein and a common insecticide may be more lethal to crop pests than either ingredient used alone, according to biologists. The one-two punch also inhibits the insects' growth rate and reduces their chance of developing resistance.

"We found a synergistic effect, where the two insecticides together decreased the growth rate of caterpillars more than either one did alone," said Dawn Luthe, professor of plant stress biology at Penn State. "The insect mortality rate was also much greater than the sum of mortality rates when only one insecticide was used."

One of those insecticides, Bt, is commonly used around the world. When insects feed on plants genetically modified to produce Bt, the toxin binds to chemical receptors lining the insects' midgut. This disrupts the receptors function, eventually killing the insects. But researchers say some insects always survive the ordeal and over time subsequent populations could develop resistance to the toxin.

Luthe and her colleagues Srinidhi Mohan and Peter W. K. Ma, post-doctoral student and professor at Mississippi State University, and W. Paul Williams, research geneticist at the U.S Department of Agriculture studied a unique plant-based insecticide known as Mir1-CP.

Their goal is to see if Mir1-CP, when used in tandem with other biological pesticides, such as the Bt toxin, can prevent pests from developing resistance and make the toxin more effective.

"This protein, which we developed from certain strains of corn from Antigua, breaks down other proteins and peptides in the insects' gut," said Luthe, whose findings appear in the current issue of PLoS ONE.

Unlike Bt, Mir1-CP breaks down proteins in a protective membrane covering the midgut. This membrane acts as a barrier that protects the caterpillar from toxins in the diet, and cycles nutrients to the midgut.

"It is the caterpillar's first line of defense agai
'/>"/>

Contact: Amitabh Avasthi
axa47@psu.edu
814-865-9481
Penn State
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Natural insecticide re-created in the lab
2. Cigarette smoke, alcohol damage hearts worse as combo
3. e-Smart(R) Technologies Delivers Its New Super Smart Card(TM) in South Korea.
4. DOE JGI Community Sequencing Program delivers first moss genome
5. Lupus Research Institute strategy delivers $30 million in national funding
6. Mountain pine beetle: Canadas new government delivers
7. Scientists decipher mechanism behind antimicrobial hole punchers
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/22/2015)... man-made form of insulin delivered by nasal spray may ... with mild cognitive impairment and Alzheimer,s disease dementia, according ... Forest Baptist Medical Center. The study,s subjects ... (MCI) or mild to moderate Alzheimer,s dementia (AD). Those ...
(Date:1/22/2015)... 2015 , Europe,s ... The European Patent Office to present a video retrospective of the ... be featured: Christofer Toumazou and Sophie Wilson   ... winners of the Award   Starting on 22 January ...
(Date:12/24/2014)... , Dec. 23, 2014  Since its launch in December 2014, the ... eliminate the pain of trying to remember their usernames and ... fused to their smartphones. To assist people who have struggled ... company that created 1U and focuses on redefining identity, announced ...
Breaking Biology News(10 mins):Nasal Spray with Insulin Equivalent Shows Promise as Treatment for Adults with Mild Cognitive Impairment, Alzheimer's Dementia 2Nasal Spray with Insulin Equivalent Shows Promise as Treatment for Adults with Mild Cognitive Impairment, Alzheimer's Dementia 3Ten Years of the European Inventor Award: A Retrospective Look at the Inventors and Ideas That Have Changed Our Lives 2Ten Years of the European Inventor Award: A Retrospective Look at the Inventors and Ideas That Have Changed Our Lives 31U Offers Best Solution to the Username / Password Dilemma: For FREE! 21U Offers Best Solution to the Username / Password Dilemma: For FREE! 3
... by the University of Colorado at Boulder and the ... liquid crystals of ultrashort DNA molecules immersed in water, ... the emergence of life on Earth. CU-Boulder ... surprisingly short segments of DNA, lifes molecular carrier of ...
... quack-quack there. Farmers may find phytochemicals to be the ... in the bucket that cashes in on the tug-o-war ... the Texas Agricultural Experiment Station. Thats because applying ... increases disease-preventing phytochemicals, or nutrients, for which consumers may ...
... in remote parts of the UK, southern Scandinavia and ... dissolved organic matter. In this weeks Nature journal (22 ... (University College London) and the US Environmental Protection Agency ... a return to a more natural, pre-industrial state following ...
Cached Biology News:Liquid crystal phases of tiny DNA molecules point up new scenario for first life on Earth 2Liquid crystal phases of tiny DNA molecules point up new scenario for first life on Earth 3Liquid crystal phases of tiny DNA molecules point up new scenario for first life on Earth 4Old McDonald had a phytochemical 2Old McDonald had a phytochemical 3Don't judge a brook by its color -- brown waters are more natural 2
(Date:12/24/2014)... and NEW YORK , Dec. 24, 2014 ... advancing patient care in critical areas, announced the closing of ... and warrants to purchase up to an aggregate 3,500,000 shares ... share and $.01 per warrant.  The warrants have a per ...
(Date:12/24/2014)... BOTHELL, Wash. , Dec. 24, 2014   BioLife Solutions ... manufacturer and marketer of proprietary clinical grade hypothermic storage ... thermal shipping products for cells and tissues  ("BioLife" or ... Annual Meeting of Stockholders on May 4, 2015 (the "Annual ...
(Date:12/24/2014)... (PRWEB) December 23, 2014 GMO corn cases ... Syngenta, are in the process of being consolidated in a ... In Re: Syngenta AG MIR 162 Corn Litigation, MDL No. ... Kansas. , Management of the Syngenta GMO corn multidistrict litigation ...
(Date:12/24/2014)... 2014 SoundConnect’s 2015 ... cutting edge communication technology, provide continued education and ... webinar series demonstrates online communication features and benefits; ... conferencing’s most innovative and powerful tools. , According ...
Breaking Biology Technology:PlasmaTech Biopharmaceuticals, Inc. Announces Closing of Public Offering 2PlasmaTech Biopharmaceuticals, Inc. Announces Closing of Public Offering 3BioLife Solutions Sets Date for Annual Meeting of Stockholders 2Carey Danis & Lowe Reports on Syngenta GMO Corn Transfer Order 2SoundConnect Launches Leading Edge Business Communications Webinar Series 2SoundConnect Launches Leading Edge Business Communications Webinar Series 3
... Biotech Inc. (TSX: ONC, NASDAQ: ONCY ) ... Pandha of the Royal Surrey County Hospital, U.K., was ... Clinical Cancer Research. The paper is entitled "Synergistic Effects ... Melanoma." , The research demonstrated that the innate cancer ...
... , , RICHMOND, Va., Sept. ... fourth year in a row, according to an annual survey published ... brand follows recent No. 1 rankings from Pollina Corporate Real Estate ... rankings by all three of these reputable business brands at one ...
... , , ATLANTA, Sept. 24 ... (the "Company"), an Atlanta-based, biopharmaceutical company developing human vaccines for ... announcement today of partial success in the recently completed Phase ... by Sanofi-Aventis and Global Solutions for Infectious Diseases. The completed ...
Cached Biology Technology:Oncolytics Biotech(R) Inc. Announces Reovirus and Cisplatin Research Supports U.S. Phase 2 Metastatic Melanoma Trial 2Virginia Now Owns Three Top National Business Rankings 2Encouraging HIV/AIDS Vaccine Trial Results Support GeoVax Labs, Inc. Strategy 2Encouraging HIV/AIDS Vaccine Trial Results Support GeoVax Labs, Inc. Strategy 3Encouraging HIV/AIDS Vaccine Trial Results Support GeoVax Labs, Inc. Strategy 4
... Array Service enables scientists who have access to ... FAST Slides printed with proteins from S&Ss antibody ... the arrays is performed by the customer. Its ... discuss your needs with an expert and define ...
Acetylcholinesterase (human brain, AChE)...
... are used to study co-translational and ... events such as signal peptide cleavage, ... can be examined by the translation ... in the presence of these microsomal ...
Polio component type I...
Biology Products: