WU Lu-Mei
Hubei Hongshan LaboratoryQIN Ping
College of Plant Science & Technology, Huazhong Agricultural University, Wuhan HubeiYAN Tong
National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Hubei WuhanDUAN Qun
Hubei Hongshan LaboratoryYU Yang
Hubei Hongshan LaboratoryLIU Han
National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Hubei WuhanLIN Yong-Jun
Hubei Hongshan LaboratoryWU Gao-Bing
College of Plant Science & Technology, Huazhong Agricultural University, Wuhan HubeiFAN Chu-Chuan
Hubei Hongshan LaboratoryZHOU Yong-Ming
Hubei Hongshan Laboratory1.Hubei Hongshan Laboratory;2.National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University;3 .College of Plant Science & Technology, Huazhong Agricultural University
National Major Project for Developing New GM Crops (2018ZX08020001)
Glufosinate is a non-selective broad-spectrum herbicide applicable in weeds control worldwide. However, in China there is no glufosinate-tolerant rapeseed variety with independent intellectual property rights to date. In this study, a glufosinate-resistant gene Syn1-RePAT was successfully transformed to the Brassica napus via Agrobacterium tumefaciens-mediated hypocotyl method, and 27 transgenic plants were obtained. The transgenic lines with a single copy of T-DNA insertion were identified by Southern blot analysis, and some of them on T-DNA copy number variation were analyzed by progeny segregation assay. The T-DNA insertion sites in the lines of OV40-7, OV40-15, OV40-16 and OV40-17 were identified by inverse PCR method. The stability of the T-DNA insertion was further confirmed by insertion-specific PCR in their T1 to T3 generations. RT-PCR and qRT-PCR expression analysis revealed that the Syn1-RePAT gene was stably overexpressed in different generations of transgenic lines. Treatments with different doses of glufosinate indicated that lines OV40-6, OV40-7 and OV40-16 were tolerant to at least six times of the recommended dose of glufosinate in production. Thus, the novel glufosinate -tolerant rapeseed lines generated in the present study will lay the foundation for the herbicide- tolerance rapeseed breeding in China.