TcCHS Gene Confers Strong Resistance Against Cotton AphidsFebruary 14, 2018
Aphids are pests of chrysanthemum that use plant volatiles to select host plants. They ingest cell contents to test the quality of the host before engaging in prolonged feeding and reproduction. Changes in metabolite profiles can disrupt aphid–plant interactions and provide new methods of pest control.
To test this theory, Hao Hu of Huazhong Agricultural University in China and Wageningen University in the Netherlands overexpressed the dalmatian pyrethrum (Tanacetum cinerariifolium) TcCHS gene, encoding chrysanthemol synthase, in chrysanthemum (Chrysanthemum morifolium).
Overexpression resulted in the transgenic chrysanthemum emitting volatile chrysanthemol, with no detrimental phenotypic effects. Analysis showed that the TcCHS-overexpressing plants significantly reduced aphid reproduction, consistent with disturbance of aphid probing activities on these plants. In open-field trials, aphid population development was very strongly impaired demonstrating the robustness and high impact of the trait.
These results suggest that expression of the TcCHS gene can induce a defense system. This study also introduces a promising new option for engineering aphid control into plants.
For more information on this study, read the article in Plant Biotechnology Journal.
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
- Nigeria is Gearing towards Commercializing GM Seeds
- Genetic Trigger Adds Branches to Plants, Could Boost Crop Yields
- Australian OGTR Approves GM Cotton (COT102) and Canola (DHA Canola)
- USDA FAS-GAIN Reports Advancement of Agri-biotech in Bangladesh
- Found: Gene that Confers Resistance to Septoria
- Temperature Resilient Crops Now an "Achievable Dream"
- German Study Analyzes Risk Perceptions of Consumers Regarding GM Crops
- Rice Gene Makes Maize Productive; To Do the Same for Other Crops
- Scientists Conclude Safety of Pseudomonas as Source of Genes for GM Crops
- RTD1 Involved in Tocopherol Biosynthesis and Plant Development in Rice
Beyond Crop Biotech
- Pheromone from Asian Citrus Psyllid that Transmits Citrus Greening Now Identified
- Scientists Sequence Genomes of 60 Citrus Varieties to Draw Up Family Tree and Understand Disease Response
- TcCHS Gene Confers Strong Resistance Against Cotton Aphids
- Science and She Campaign
- Researchers Test CRISPR-Cas9 on Red Sage
- OsPKS2 Controls Rice Male Fertility by Regulating Pollen Wall Formation
- TALENs-mediated Editing in Potato via Agroinfiltration
- Scientists Study the Function of OsPT4 in Arsenic Uptake in Rice
Read the latest:
- Biotech Updates (March 22, 2023)
- Genome Editing Supplement (March 22, 2023)
- Gene Drive Supplement (February 22, 2023)
Subscribe to BU: