American Journal of Plant Sciences

Volume 7, Issue 1 (January 2016)

ISSN Print: 2158-2742   ISSN Online: 2158-2750

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Agrobacterium tumefaciens-Mediated Transformation of Wild Tobacco Species Nicotiana debneyi, Nicotiana clevelandii, and Nicotiana glutinosa

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DOI: 10.4236/ajps.2016.71001    3,594 Downloads   5,969 Views  Citations

ABSTRACT

Studies on Agrobacterium tumefaciens-mediated transformation of wild tobaccos Nicotiana debneyi, Nicotiana clevelandii, and Nicotiana glutinosa were conducted. Leaf disks were infected and co-cultivated with A. tumefaciens strain EHA105 carrying the binary vector pBISN1 with an intron interrupted β-glucuronidase (GUS) reporter gene (gusA) and the neomycin phosphotransferase gene (nptII). Selection and regeneration of kanamycin resistant shoots were conducted on regeneration medium containing 8.88 μM 6-benzylaminopurine (BAP), 0.57 μM indole-3-acetic acid (IAA), 50 mg·L-1 kanamycin and 250 mg·L-1 timentin. Kanamycin resistant shoots were rooted Murashige and Skoog (MS) medium containing 100 mg·L-1 kanamycin and 250 mg·L-1 timentin. Using this protocol, kanamycin-resistant plants were obtained from all three wild tobaccos at frequencies of 75.6% for N. debneyi, 25.0% for N. clevelandii, and 2.8% for N. glutinosa. Transcripts of nptII and gusA were detected in kanamycin-resistant T0 transformants (i.e., 2 for N. glutinosa and 5 for each of the N. debneyi and N. clevelandii) by the reverse transcript polymerase chain reaction (RT-PCR), and histochemical GUS assays confirmed expression of gusA in both T0 plants and T1 seedlings. The results indicate that the protocols are efficient for transformation of wild tobacco N. debneyi and N. clevelandii.

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Duan, W. , Wang, L. and Song, G. (2016) Agrobacterium tumefaciens-Mediated Transformation of Wild Tobacco Species Nicotiana debneyi, Nicotiana clevelandii, and Nicotiana glutinosa. American Journal of Plant Sciences, 7, 1-7. doi: 10.4236/ajps.2016.71001.

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