Navigation Links
Insects develop resistance to engineered crops

Genetically modified crops containing two insecticidal proteins in a single plant efficiently kill insects. But when crops engineered with just one of those toxins grow nearby, insects may more rapidly develop resistance to all the insect-killing plants, report Cornell University researchers.

A soil bacterium called Bacillus thuringiensis (Bt), whose genes are inserted into crop plants, such as maize and cotton, creates these toxins that are deadly to insects but harmless to humans.

Bt crops were first commercialized in 1996, and scientists, critics and others have been concerned that widespread use of Bt crops would create conditions for insects to evolve and develop resistance to the toxins.

Until now, it has not been shown if neighboring plants producing a single Bt toxic protein might play a role in insect resistance to transgenic crops expressing two insecticidal proteins.

"Our findings suggest that concurrent use of single- and dual-gene Bt plants can put the dual-gene plants at risk if single-gene plants are deployed in the same area simultaneously," said Anthony Shelton, professor of entomology at Cornell's College of Agriculture and Life Sciences and an author of the study, which was posted online June 6 in the Proceedings of the National Academy of Sciences (PNAS) and is in the June 14 print edition of the journal. "Single-gene plants really function as a steppingstone in resistance of two-gene plants if the single gene plants contain one of the same Bt proteins as in the two-gene plant."

Cotton and maize are the only commercial crops engineered with Bt genes. In 2004 these crops were grown on more than 13 million hectares (about 32 million acres) domestically and 22.4 million hectares (more than 55 million acres) worldwide. After eight years of extensive use, there have been no reports of crop failure or insect resistance in the field to genetically modified Bt crops, Shelton said. Still, several insects have develop
'"/>

Source:Cornell University News Service


Page: 1 2 3 4

Related biology news :

1. Insects, viruses could hold key for better human teamwork in disasters
2. Study Unlocks Insects?Secret for Love in the Dark
3. Insects that produce males from unfertilized eggs reveal a surprising cellular feat
4. Insects and mammals share common fat-building pathway, study suggests
5. A much-needed shot in the arm for HIV vaccine development
6. Clam embryo study shows pollutant mixture adversely affects nerve cell development
7. Weizmann Institute scientists develop a new approach for directing treatment to metastasized prostate cancer in the bones.
8. Scientists develop new color-coded test for protein folding
9. Zebrafish may hold key to understanding human nerve cell development
10. First real-time view of developing neurons reveals surprises, say Stanford researchers
11. Scientists identify new model Of NK cell development
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Insects develop resistance engineered crops

(Date:8/28/2014)... A Mayo Clinic researcher and his collaborators have developed ... enhance the process of re-engineering cells for biomedical investigation. ... biology methods to aid stem cell engineering. Details of ... described in two back-to-back papers in the journal ... range of uses for all types of cell-based investigations ...
(Date:8/28/2014)... Athens, Ga. The support of peer groups ... effective breastfeeding programs, according to recent University of ... mothers in the Athens-Clarke County area determined that ... the outcomes of mothers of infants. , "Mothers ... be successful at breastfeeding," said study co-author Alex ...
(Date:8/28/2014)... A unique method for delivering compounds that ... HIV and AIDS may be possible, thanks ... Agricultural Sciences., A semi-soft vaginal suppository made ... loaded with the antiviral drug Tenofovir provides ... against the spread of sexually transmitted infections ...
Breaking Biology News(10 mins):New tool aids stem cell engineering for medical research 2Breastfeeding study shows need for effective peer counseling programs 2Sensory-tested drug-delivery vehicle could limit spread of HIV, AIDS 2Sensory-tested drug-delivery vehicle could limit spread of HIV, AIDS 3
... fish farming can be accomplished with minimal or no ... proper planning and safeguards are in place, according to ... Service. The study, led by scientists at National ... evaluated the environmental effects of finfish aquaculture, including interactions ...
... restaurant reduces the calories in a children,s meal by ... French fries? Would children compensate by choosing a more ... Dr. Brian Wansink and Dr. Andrew Hanks, analyzed transaction ... question. Prior to 2012, the Happy Meal was ...
... the potential to threaten people and nature, and that it ... greenhouse gases. One way to slow climate change is to ... photosynthesis, take up the greenhouse gas carbon dioxide, converting it ... the form of wood, roots, leaves) and oxygen. New ...
Cached Biology News:Healthier Happy Meals 2Big data project reveals where carbon-stocking projects in Africa provide the greatest benefits 2Big data project reveals where carbon-stocking projects in Africa provide the greatest benefits 3
(Date:8/28/2014)... The ability for organizations to attract top ... individuals to perform at the highest of levels, are ... to compete in this post–recession era. The pharmaceutical ... the sector increasingly focuses on the importance of employee-fit ... real results on the organization's development and the innovation ...
(Date:8/28/2014)... by a Florida State University research team has led ... temperature, emit white light, and convert photon energy directly ... a butterfly. , Biwu Ma, associate professor in the ... College of Engineering, created the molecule in a lab ... that his creation has many other unique capabilities. , ...
(Date:8/28/2014)... Supplementing their complete line of ... Eppendorf Safe Lock Centrifuge Tubes . This ... quality tubes at an affordable price. Eppendorf Safe ... chemical, medical, pharmaceutical, and life science research and ... able to afford Eppendorf products. , Eppendorf is ...
(Date:8/27/2014)... Livermore, California (PRWEB) August 27, 2014 ... (LLNL), through Lawrence Livermore National Security ... million to develop and deliver a state-of-the-art laser ... Beamlines facility (ELI Beamlines), under construction in the ... design performance, the laser system, called the " ...
Breaking Biology Technology:Klein Hersh International Leads Philadelphia Area Life Science Industry in Company Culture 2Klein Hersh International Leads Philadelphia Area Life Science Industry in Company Culture 3Novel 'butterfly' molecule could build new sensors, photoenergy conversion devices 2Eppendorf Safe Lock Centrifuge Tube Promotion Now Available at Major Pipette Distributor Pipette.com 2Eppendorf Safe Lock Centrifuge Tube Promotion Now Available at Major Pipette Distributor Pipette.com 3LLNL Synchs up with ELI Beamlines on Timing System 2LLNL Synchs up with ELI Beamlines on Timing System 3
... , , , Danny Q. Hoang ... Cloning Systems, Inc. , , Stratagene introduces affinity ... for studying expression of the NR2A, NR2B and ... regions. These antibodies,have been used in Western blot ...
... all-purpose power supply , Douglas Drake Michelle Cayouette Lisa Filippone ,Bob LeSchofs ... , , ... Stratagene has developed the new SmartPower , ... electrophoretic application. The SmartPower 4000 power supply has been, ...
... ,,,, A streamlined and reliable method ... Braman Scott Basehore ,Stratagene , The ... purification kit allows,easy, quick, and reliable purification ... DNA recovered from phage lysate exceeds the ...
Cached Biology Technology:Antibodies for Studying NMDA Receptor Protein Expression and,Synapse-Specific Immunolabeling 2Antibodies for Studying NMDA Receptor Protein Expression and,Synapse-Specific Immunolabeling 3Antibodies for Studying NMDA Receptor Protein Expression and,Synapse-Specific Immunolabeling 4A Versatile Power Supply for All Electrophoresis Applications 2A Versatile Power Supply for All Electrophoresis Applications 3A Versatile Power Supply for All Electrophoresis Applications 4A Versatile Power Supply for All Electrophoresis Applications 5Purified Single-Stranded M13 DNA for Automated Sequencing 2Purified Single-Stranded M13 DNA for Automated Sequencing 3
Ras-related C3 botulinum toxin substrate 1...
Human sVCAM-1/CD106 ELI-PAIR Kit...
HP 1 alpha Immunogen: Synthetic peptide between amino acids 1-100 of the human HP 1 alpha protein. Storage: -20 C, Avoid Freeze/Thaw Cycles...
... Services include subcloning of gene in ... cells, isolation and plaque purification of ... virus stock for one clone, protein ... insect cell culture. Expected yield and ...
Biology Products: