1. Transgenic Cotton Plants Expressing the HaHR3 Gene Conferred Enhanced Resistance to Helicoverpa armigera and Improved Cotton Yield.
- Author
-
Han Q, Wang Z, He Y, Xiong Y, Lv S, Li S, Zhang Z, Qiu D, and Zeng H
- Subjects
- Animals, Gene Expression Regulation, Plant, Gossypium growth & development, Moths pathogenicity, Plant Diseases genetics, Plants, Genetically Modified genetics, Plants, Genetically Modified growth & development, RNA, Double-Stranded genetics, Disease Resistance genetics, Gossypium genetics, Insect Proteins genetics, Moths genetics, Transcription Factors genetics
- Abstract
RNA interference (RNAi) has been developed as an efficient technology. RNAi insect-resistant transgenic plants expressing double-stranded RNA (dsRNA) that is ingested into insects to silence target genes can affect the viability of these pests or even lead to their death. HaHR3 , a molt-regulating transcription factor gene, was previously selected as a target expressed in bacteria and tobacco plants to control Helicoverpa armigera by RNAi technology. In this work, we selected the dsRNA- HaHR3 fragment to silence HaHR3 in cotton bollworm for plant mediated-RNAi research. A total of 19 transgenic cotton lines expressing HaHR3 were successfully cultivated, and seven generated lines were used to perform feeding bioassays. Transgenic cotton plants expressing ds HaHR3 were shown to induce high larval mortality and deformities of pupation and adult eclosion when used to feed the newly hatched larvae, and 3rd and 5th instar larvae of H. armigera . Moreover, HaHR3 transgenic cotton also demonstrated an improved cotton yield when compared with controls., Competing Interests: The authors declare no conflict of interest.
- Published
- 2017
- Full Text
- View/download PDF