Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2020, Vol. 36 ›› Issue (12): 91-96.doi: 10.11924/j.issn.1000-6850.casb20191100881

Special Issue: 生物技术 水稻

Previous Articles     Next Articles

OsAAA1 Gene in Rice: Overexpression Vector Construction and Genetic Transformation

Song Simin, Zheng Qiming, Li Shijiao, Deng Shiqi, Li Kun, Liu Xinqiong()   

  1. Hubei Provincial Key Laboratory for Protection and Application of Special Plants in Wuling Area of China/Key Lab for Biotechnology of State Ethnic Affairs Commission/College of Life Science, South-Central University for Nationalities, Wuhan 430074
  • Received:2019-11-27 Revised:2019-12-25 Online:2020-04-25 Published:2020-04-21
  • Contact: Xinqiong Liu E-mail:liuxinqiong@mall.SCUEC.edu.cn

Abstract:

The objectives are to construct the overexpression vector with Flag tagged OsAAA1, obtain positive transgenic plants and detect expression of OsAAA1, in positive transgenic rice. The sequence of OsAAA1, was amplified by polymerase chain reaction (PCR) using the cDNA template of Nip. The PCR product was cloned into Flag-tagged pU1301; after confirmation of PCR, enzyme digestion and sequencing, recombinant plasmid was transformed to Nip by agrobacterium; when positive transgenic plants were verified by molecular identification, the expression of OsAAA1, was detected by Real-time PCR. The recombinant plasmid of OsAAA1,-pU1301-Flag was successfully constructed; after genetic transformation, thirty-three plants were differentiated; twenty-six transgenic plants were verified to be positive by molecular identification; the Real-time PCR results indicated that the expression of OsAAA1, was up-regulated to different degrees in twenty-three plants. Compared with the Nip, the expression of OsAAA1, was over 30 times in eight positive transgenic plants, in five of which the expression was even over 40 times. The overexpression vector with Flag tagged OsAAA1, was successfully constructed. Genetic transformation results showed that OsAAA1, with Flag-tag could be integrated into the genomic DNA of Nip, which could increase the expression of OsAAA1,. This study provides a basis for discovering functional proteins interacting with OsAAA1, in rice by using the Flag tag.

Key words: rice, OsAAA1 gene, pU1301-Flag vector, genetic transformation, molecular identification

CLC Number: