Study Reveals the Defense Roles of Soybean GmAFS Gene Against Nematodes and InsectsDecember 1, 2016
Plant terpene synthase genes (TPSs) have various roles in biological processes. University of Tennessee's Jingyu Lin, together with researchers from various research institutions worldwide, characterized a member of the soybean TPS gene family, GmAFS. The team also studied the role of GmAFS in defense against nematodes and insects of soybean (Glycine max).
GmAFS was found to be closely related to (E,E)-α-farnesene synthase gene from apple. The expression of GmAFS in a soybean cyst nematode-resistant variety was significantly induced by the infection. However, its expression in a SCN-susceptible soybean was not changed by the same infection. Transgenic hairy roots overexpressing GmAFS were generated in an SCN-susceptible soybean line to test its role. The transgenic lines showed significantly higher resistance to SCN, indicating that GmAFS contributes to SCN resistance.
In soybean leaves, the expression of GmAFS was found to be induced by Tetranychus urticae (two-spotted spider mites) as well as exogenous application of methyl jasmonate. Further analysis revealed that soybean plants infested with T. urticae emit a mixture of volatiles with (E,E)-α-farnesene as one of the most abundant components.
This study reveals the GmAFS defense roles in both below-ground and aboveground organs of soybean.
For more information, read the article in Plant Biotechnology Journal.
The Crop Biotech Update is a weekly newsletter of ISAAA, a non-for-profit organization. The CBU is distributed for free to over 23,000 subscribers worldwide to inform them about the key developments in biosciences, especially in agricultural 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
- Students Launched the First Scientific Internet Radio Station in Egypt
- Uganda PM Advocates for Biotech at NARO-MAK Conference
- Ethiopia to Commercialize Bt Cotton in Two Years
- Scientists Find Single Enzyme Controling Growth and Defense Hormones
- Australian OGTR Receives License Application for Field Trial of GM Wheat
- Researchers Reveal Characteristics of Plant Defense Compound Dhurrin
- Scientists Engineer Maize to Produce Astaxanthin
- Study Reveals the Defense Roles of Soybean GmAFS Gene Against Nematodes and Insects
Plant Breeding Innovations
- Challenges in Genome Editing of Sugarcane
- Public Acceptance of Food Products from Genome-Edited Crops
Beyond Crop Biotech
- Engineers Develop Transgenic Grass that Neutralizes Toxic Pollution from Bombs, Explosives, and Munitions
From the BICs
- Filipino Students Showcase Biotech in Bag Designs
- NaCRRI Hosts ABNE Technical Advisory Team, Looks into Strengthening Biosafety Capacity
- Biotech Stakeholders Informed about New Regulation in Indonesia
- Plant Genomics and Gene Editing Congress - Europe
Subscribe to CBU: