Bt Rice Does Not Stimulate an Outbreak of its Non-target Herbivore
July 15, 2011| |
Brown planthopper (Nilaparvata lugens), is one of the major insect pests of rice in temperate and tropical Asia. It feeds mainly on stem, sucking nutrients from the living tissues, which leads to leaf drying and tiller wilting called "hopperburn". In a previous study, it was observed that the symptoms of BPH were most serious in the non-Bt rice field than the Bt rice field. This led Yang Chen of Zhejiang University and other scientists to investigate if Bt rice KMD2 could stimulate an outbreak of BPH over four generations in the laboratory and the field.
Laboratory findings showed that the survival of BPH nymphs fed with Bt and non-Bt rice were similar. The development of BPH nymph was significantly delayed by the Bt rice in the 1st and 2nd generation, but not in the 4th generation. The pest's ability to reproduce on Bt rice was significantly lower in all generations compared with non-Bt rice. In the field, the population density of BPH nymphs was significantly lower in the Bt rice field, but the temporal pattern of population dynamics of BPH adults was similar in Bt and non-Bt rice fields. This could be due to migratory interference of the adults. Further morphological analysis indicated that Cry1Ab protein was absent in the guts of BPH adults. Hence, Bt rice "KMD2" could not cause an outbreak of BPH.
Read more details at http://www.springerlink.com/content/l2855180254j13t8/.
| |
Biotech Updates is a weekly newsletter of ISAAA, a not-for-profit organization. It is distributed for free to over 22,000 subscribers worldwide to inform them about the key developments in biosciences, especially in biotechnology. Your support will help us in our mission to feed the world with knowledge. You can help by donating as little as $10.
-
See more articles:
-
News from Around the World
- Ministerial Action Plan on Food Price and Volatility
- Potato Genomic Sequence Completed
- Chinese and Swahili Versions of Mandy and Fanny Cartoon Book on Biotech
- Nanotechnologies for the Poor
- Biosafety Communication Skills for NEMA Officers
- German Chancellor Visits BecA
- Breeding Procedure Accelerates Winter Wheat Development
- Bolivia Gov't to Allow Expanded Use of GM Foods
- 'Evening' Protein Complex Regulates Plant Growth
- Yeutter: Don't Let America Lose its Agricultural Edge
- Vilsack Appoints Members to Advisory Committee on Biotech and 21st Century Agriculture
- Plant Branching Hormone Discovered
- Philippine Media Reportage on Biotech
- CSIRO Identifies Gene Affected by CMV
- ISAAA Publishes Bt Cotton Events & Hybrids in India, 2002 to 2010
- Bangladesh Finalizes National Biotech Policy Action Plan
- China Opts for International Cooperation on Biotechnology
- SEARCA and Partners to Conduct Regional Media Workshop on Biotechnology and Climate Change
- Making Rice More Adapted to High CO2 Concentration
- Egg Producers Ask Supermarkets to Drop Non-GM Requirement on Feeds
- EFSA Launches Guidance on 90-day Feeding Studies on Whole Food and Feed in Rodents
-
Research Highlights
- Scientists Compare Efficacy of Single and Stacked Bt Genes on Pink Bollworm and Tobacco Caterpillar
- Bt Rice Does Not Stimulate an Outbreak of its Non-target Herbivore
- Sucrose Regulates Plant Responses to Phosphate Starvation
-
Beyond Crop Biotech
- Sunburn Study Could Lead to New Pain Relief
- Rewriting the Code of Life Possible
-
Announcements
- First Announcement of 6th International Congress on Legume Genetics and Genomics
- Biotech Showcase 2012
-
Resources
- New Publication on Molecular Profiling
- Document on Green Transformation
-
Read the latest: - Biotech Updates (April 24, 2024)
- Gene Editing Supplement (April 24, 2024)
- Gene Drive Supplement (February 22, 2023)
-
Subscribe to BU: - Share
- Tweet