Navigation Links
Trouble on the horizon for GM crops?
Date:6/20/2012

Resistance of cotton bollworm to insect-killing cotton plants involves more diverse genetic changes than expected, an international research team reports in the journal Proceedings of the National Academy of Sciences.

To decrease sprays of broad-spectrum insecticides, which can harm animals other than the target pests, cotton and corn have been genetically engineered to produce toxins derived from the bacterium Bacillus thuringiensis, or Bt.

Bt toxins kill certain insect pests but are harmless to most other creatures including people. These environmentally friendly toxins have been used for decades in sprays by organic growers and since 1996 in engineered Bt crops by mainstream farmers.

Over time, scientists have learned, initially rare genetic mutations that confer resistance to Bt toxins are becoming more common as a growing number of pest populations adapt to Bt crops.

In the first study to compare how pests evolve resistance to Bt crops in the laboratory vs. the field, researchers discovered that while some the of the lab-selected mutations do occur in the wild populations, some mutations that differ markedly from those seen in the lab are important in the field.

Caterpillars of the cotton bollworm, Helicoverpa armigera, can munch on a wide array of plants before emerging as moths. This species is the major cotton pest in China, where the study was carried out.

Bruce Tabashnik, head of the department of entomology at the University of Arizona College of Agriculture and Life Sciences, who co-authored the study, considers the findings an early warning to farmers, regulatory agencies and the biotech industry.

"Scientists expected the insects to adapt, but we're just finding out now how they're becoming resistant in the field," Tabashnik said.

To avoid surprises, researchers have exposed cotton bollworm populations to Bt toxins in controlled lab experiments and studie
'/>"/>

Contact: Daniel Stolte
stolte@email.arizona.edu
520-626-4402
University of Arizona
Source:Eurekalert  

Page: 1 2 3 4

Related biology news :

1. Will a genetic mutation cause trouble? Ask Spliceman
2. Westpak Deploys Horizontal Impact Test System (HITS)
3. Microbial communities shifted dramatically after Deepwater Horizon spill
4. Study by Haverford College professor reveals unprecedented impact of Deepwater Horizon on deep ocean
5. Study confirms oil from Deepwater Horizon disaster entered food chain in the Gulf of Mexico
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Trouble on the horizon for GM crops?
(Date:1/22/2015)... , January 22, 2015 , ... year  The European Patent Office to present a video ... British nominations to be featured: Christofer Toumazou and ... former finalists and winners of the Award   Starting ...
(Date:1/22/2015)... , Jan. 22, 2015   EyeLock, Inc. , a ... has appointed Steve Gerber to the new role ... be responsible for leading development of mobile platforms and wearable ... of success and innovation in the semiconductor industry to his ...
(Date:12/24/2014)...  Since its launch in December 2014, the 1U™ ... of trying to remember their usernames and passwords through replacing ... smartphones. To assist people who have struggled to remember usernames ... 1U and focuses on redefining identity, announced today that it ...
Breaking Biology News(10 mins):Ten 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 3EyeLock Names Steve Gerber as Senior Vice President of Mobile and Wearables 21U Offers Best Solution to the Username / Password Dilemma: For FREE! 21U Offers Best Solution to the Username / Password Dilemma: For FREE! 3
... San Diego State University researchers will lead a study ... The Guizhou snub-nosed monkey, often called the golden monkey. ... the National Science Foundation, student researchers from SDSU,s departments ... month to the Fanjingshan National Nature Reserve, home to ...
... efficient cars, buildings and domestic appliances to address climate change ... Research at the University of East Anglia. A report ... as much effort is being spent on developing energy supply technologies ... improving the efficiency with which energy is used. The ...
... Oct. 25, 2012 /PRNewswire-iReach/ -- New research shows that ... Maine have demonstrated improvements in health behaviors that persisted ... and rising health care costs continue to challenge employers, ... to reduce health risks and improve health behaviors. ...
Cached Biology News:SDSU researchers to study China's national treasure 2Efforts to mitigate climate change must target energy efficiency 2Efforts to mitigate climate change must target energy efficiency 3New Study Shows That Improvements in Employee Health Behaviors Persist Over Two Years 2
(Date:1/22/2015)... 2015   GenoSpace , a precision medicine software company that ... broad use of genomic, imaging and other biomedical data in ... Michelle Munson , CEO of Aspera, an IBM Company, to ... http://photos.prnewswire.com/prnh/20150122/170713 "We are pleased to ...
(Date:12/24/2014)... , Dec. 24, 2014  United Therapeutics Corporation (NASDAQ: ... (NYSE: MDT ) has submitted a pre-market ... (FDA) for the use of Medtronic,s SynchroMed ® ... catheter) for use with United Therapeutics, Remodulin ® ...
(Date:12/24/2014)... Dec. 24, 2014   BioLife Solutions , Inc. (NASDAQ: ... proprietary clinical grade hypothermic storage and cryopreservation ... for cells and tissues  ("BioLife" or the "Company"), today announced ... on May 4, 2015 (the "Annual Meeting"). Because ...
(Date:12/24/2014)... 2014 Earlier this year in a June ... the Adult Stem Cell Technology Center, LLC ( ASCTC ) ... property of adult tissue stem cells. His title “Asymmetric ... for the Future,” embodied the essence of his message to ...
Breaking Biology Technology:GenoSpace Expands Board with Appointment of Michelle Munson 2United Therapeutics Announces Submission Of Pre-Market Approval Application For Implantable Drug Infusion System To Deliver Remodulin 2United Therapeutics Announces Submission Of Pre-Market Approval Application For Implantable Drug Infusion System To Deliver Remodulin 3United Therapeutics Announces Submission Of Pre-Market Approval Application For Implantable Drug Infusion System To Deliver Remodulin 4BioLife Solutions Sets Date for Annual Meeting of Stockholders 2Adult Stem Cell Technology Center, LLC’s Director Sherley's Address on What’s Holding Back Regenerative Medicine Featured on Omics Group Website 2Adult Stem Cell Technology Center, LLC’s Director Sherley's Address on What’s Holding Back Regenerative Medicine Featured on Omics Group Website 3Adult Stem Cell Technology Center, LLC’s Director Sherley's Address on What’s Holding Back Regenerative Medicine Featured on Omics Group Website 4
... /PRNewswire/ - Respironics, Inc. (Nasdaq:,RESP) today announced that ... Apollo Light Systems, Inc., a 20-year-old, privately held ... for melatonin suppression and,circadian rhythm sleep disorders. Operating ... in American Fork, Utah and has annual revenues ...
... NKTR ) announced that Howard W. Robin, president ... upcoming BIO,InvestorForum at The Palace Hotel in San Francisco, ... Time. The presentation and Q&A session will be ... on the Investor Relations, Events,Calendar section of the Nektar ...
... from the Palace Hotel in San Francisco on Wednesday, October ... ... SAN DIEGO, Oct. 2 Favrille, Inc. (Nasdaq:,FVRL), a biopharmaceutical ... that Tamara,Seymour, Chief Financial Officer, will present at the Biotechnology,Industry Organization ...
Cached Biology Technology:Respironics Acquires Apollo Light Systems, Inc., Expands into Circadian Rhythm Device-Based Therapy Market 2Respironics Acquires Apollo Light Systems, Inc., Expands into Circadian Rhythm Device-Based Therapy Market 3
Human Norrin Biotinylated Affinity Purified PAb Protein Family: Other Growth Factors, Other Wnt-related Molecules...
...
Recombinant Mouse Matrilin-4, CF Protein Family: Extracellular Matrix Molecules, Chondrogenesis Markers...
Request Info...
Biology Products: