HOME >> BIOLOGY >> NEWS
Genetic engineered crop studies questioned

the real world."

In the second study discussed in the article, researchers at Kansas State University reported in Science that they had discovered corn borer resistance to Bt toxins. Shelton and Roush question the methodology used in the study, "including that the authors did not demonstrate that resistance was actually to the same Bt toxin as in the plant or that the insects could survive on the Bt plant." Even so, they write, "this questionable laboratory study has generated considerable debate over whether the present resistance management policy should be overturned."

In another recent issue of Nature, a University of Arizona study showed that the pink bollworm's resistance to Bt-cotton was recessive in inheritance, but the paper questioned whether resistant bollworms developed more slowly than susceptible bollworms. This could possibly knock out random mating and dilute the insect's resistance in the field. "We hope that the take-home message won't be converted to another premature claim that Bt crops are doomed," Shelton and Roush say in their commentary.

Since the release of the monarch butterfly study, write Shelton and Roush, companies that make the genetically engineered agricultural seed have been confronted by freezes on the approval process for Bt transgenic corn by the European Commission and by "possible trade restrictions by Japan." In the United States, there have been calls for a moratorium on the further planting of Bt-corn.

In discussing the Cornell monarch butterfly report, Shelton and Roush voice their surprise that a "previous and more relevant and realistic study has been largely overlooked." While the Cornell laboratory study showed high mortality among monarch larvae that ingested genetically engineered pollen, an Iowa State University study by Laura Hansen and John Obrycki showed low mortality even when Monarch larvae were fed milkweed that had the highest levels of Bt pollen that would be encountered in
'"/>

Contact: Blaine P. Friedlander Jr.
bpf2@cornell.edu
607-255-3290
Cornell University News Service
10-Sep-1999


Page: 1 2 3

Related biology news :

1. Genetic mutations linked to the practice of burning coal in homes in China
2. Genetic differences might help distinguish thyroid cancers
3. Genetic modification of linseed produces healthier omega 3 and 6 fatty acids
4. Wiley publishes Welcome to the Genome: A Users Guide to the Genetic Past, Present, and Future
5. Genetically modified bacterium as remedy for intestinal diseases
6. Genetic analysis rewrites salamanders evolutionary history
7. Genetic map of important tree genes outlined
8. Genetically-engineered marathon mouse keeps on running
9. Genetic clues found for common congenital brain disorder
10. Genetic mutation linked to more aggressive breast cancer found more often in African-Americans
11. Genetic discovery could dramatically reduce need for liver transplants in children

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:4/15/2016)... , April 15, 2016  A new partnership ... more accurate underwriting decisions in a fraction of ... competitively priced and high-value life insurance policies to ... With Force Diagnostics, rapid testing (A1C, ... data readings (blood pressure, weight, pulse, BMI, and ...
(Date:3/31/2016)...  Genomics firm Nabsys has completed a financial  restructuring ... , M.D., who returned to the company in October ... team, including Chief Technology Officer, John Oliver , ... and Vice President of Software and Informatics, Michael ... Dr. Bready served as CEO of Nabsys from 2005-2014 ...
(Date:3/21/2016)... 22, 2016 Unique technology ... for superior security   Xura, ... of secure digital communications services, today announced it is ... offer enterprise customers, particularly those in the Financial Services ... voice authentication within a mobile app, alongside, and in ...
Breaking Biology News(10 mins):
(Date:5/25/2016)... ... May 25, 2016 , ... The ... by the Office of the National Coordinator for Health IT (ONC) outlining a ... clinically relevant data were available when and where it was needed. The organization ...
(Date:5/25/2016)... , ... May 25, 2016 , ... WEDI, the nation’s ... exchange, today announced that Charles W. Stellar has been named by the WEDI Board ... since January 2016. As an executive leader with more than 35 years of experience ...
(Date:5/25/2016)... ... May 25, 2016 , ... ... and Drug Administration (FDA) has granted the company’s orphan drug designation request covering ... orphan drug designation granted by the FDA. , Spinocerebellar ataxia is a ...
(Date:5/24/2016)... Israel , May 24, 2016   MedyMatch Technology ... physicians with artificial intelligence, real-time decision support tools in the ... present at the 2016 Israeli Advanced Technology Industries (IATI) BioMed ... Israel,s 15th National Life Sciences and ... at the David Intercontinental Hotel in Tel Aviv, ...
Breaking Biology Technology:
Cached News: