HOME >> BIOLOGY >> NEWS
Insects develop resistance to engineered crops

ITHACA, N.Y. -- 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 insec
'"/>

Contact: Blaine Friedlander
bpf2@cornell.edu
607-254-8093
Cornell University News Service
17-Jun-2005


Page: 1 2 3 4

Related biology news :

1. Insects to solve crimes
2. Insects cultivate antibiotic-producing bacteria in their antennae
3. Koshland Science Museum Program: A Look at the World of Insects
4. Insects that produce males from unfertilized eggs reveal a surprising cellular feat
5. Insects and mammals share common fat-building pathway, study suggests
6. Insects, viruses could hold key for better human teamwork in disasters
7. Insects implicated in the evolution of new human infectious diseases
8. Teamwork between 2 key proteins necessary for normal development and regulation of red blood cells
9. New research identifies anti-viral protein that may predict who might be at risk to develop lupus
10. MicroRNA works with Ago2 protein to regulate blood cell development
11. New joint replacement material developed at MGH put to first clinical use

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Insects develop resistance engineered crops

(Date:5/26/2015)... , May 26, 2015 ... announced the addition of the "Saudi Arabia ... report to their offering. ,     (Logo: http://photos.prnewswire.com/prnh/20130307/600769) , ... Arabia is projected to grow at ... high growth is attributed to the surging demand ...
(Date:5/21/2015)... 2015 According to a ... (Hardware, Software, Services), by Applications (Surveillance (Airborne, Maritime, ... End-Users (Military & Defense & Commercial) - Global ... Market is expected to grow from $7252.0 Million ... a Compound Annual Growth Rate (CAGR) of 6.6%. ...
(Date:5/19/2015)... GOTHENBURG, Sweden , May 18, 2015 ... touch fingerprint sensors FPC1020, FPC1025, FPC1145, FPC1155 and FPC1035 from ... place from June until and including Q3 2015 and the ... Asia . Communicated order values for 2015 hereby amount ... revenues for Q1 2015 of 140 MSEK and a number ...
Breaking Biology News(10 mins):Saudi Arabia Biometric Systems Market Forecast and Opportunities, 2020 with Morpho Safran, ZK Technlogy, and Suprema Dominating 2Thermal Imaging Market Worth $9,998.9 Million by 2020 2Thermal Imaging Market Worth $9,998.9 Million by 2020 3Thermal Imaging Market Worth $9,998.9 Million by 2020 4Fingerprint Cards Receives Touch Fingerprint Sensor Order of SEK 230 Million and Raises Revenue Guidance for 2015 2
(Date:5/27/2015)... 26, 2015 Research and Markets ... of Jain PharmaBiotech,s new report "Molecular ... to their offering. This report ... that will play an important role in ... forensics and biological warfare in the 21st ...
(Date:5/27/2015)... Expanding in a big way into the ... Inc. recently inked a deal with Arthur Mokuda, ... , the largest endodontic distributor in Japan. The move ... Avalon Biomed, which manufactures Grey MTA Plus® and the ... that have won renown from dentists around the world. ...
(Date:5/27/2015)... 2015 The ALS Therapy Development ... wholly owned subsidiary, Anelixis Therapeutics , $1.5 million ... that targets the innate immune system. The funding comes ... received from the 2014 social media phenomenon known as ... $4 million raised directly by the Institute through last ...
(Date:5/27/2015)... , May 27, 2015  Northwest Biotherapeutics, Inc. (NASDAQ: ... DCVax® personalized immune therapies for cancer, announced today that ... of the Company, will be making an Industry Expert ... Chicago on Saturday, May 30, ... Industry Expert Theater in McCormick Place. Dr. ...
Breaking Biology Technology:Global Molecular Diagnostics Market 2015-2024 - Analysis of Key Technologies, Markets and Companies 2Global Molecular Diagnostics Market 2015-2024 - Analysis of Key Technologies, Markets and Companies 3Dental Manufacturer Avalon Biomed Inks Major Deal with Japanese Distributor 2Dental Manufacturer Avalon Biomed Inks Major Deal with Japanese Distributor 3Ice Bucket Challenge Advances Antibody Toward Clinical Trial for ALS 2Ice Bucket Challenge Advances Antibody Toward Clinical Trial for ALS 3NW Bio To Present Overview Of DCVax-Direct Phase I Trial In Chicago This Weekend 2NW Bio To Present Overview Of DCVax-Direct Phase I Trial In Chicago This Weekend 3
Cached News: