The diphtheria toxin A subunit gene (DT-A) from Corynebacterium diphtheriae inhibits protein synthesis in eukaryotes. In this study, toxicity of the DT-A gene was evaluated by a transgenic approach in tobacco and rice. The DT-A gene was cloned under transcriptional control of the CaMV 35S promoter and transformed into tobacco. Similarly, CaMV 35S and the maize Ubi1 promoter-driven DT-A gene constructs were transformed into rice. The deployment of the DT-A gene in both tobacco and rice drastically reduced the recovery of transgenic plants in comparison to pCAMBIA1301 (without DT-A). Southern blot analyses of the transgenic plants were done using the hph- and DT-A gene-specific probes to check the presence of the hph and DT-A genes. All the tobacco and rice transgenic plants showed hybridization to junction fragments upon using the hph gene probe. Southern blotting with the DT-A probe revealed that all the transgenic plants either did not have the DT-A gene or harboured truncated DT-A gene in the integrated T-DNAs. None of the transgenic plants carried the complete DT-A gene. The results showed that the DT-A gene can be used as a good non-conditional negative selectable marker in both tobacco and rice. Both CaMV 35S promoter- and Ubi1 promoter-driven DT-A genes were effective as non-conditional negative selectable markers in rice.
Published in | Journal of Plant Sciences (Volume 4, Issue 5) |
DOI | 10.11648/j.jps.20160405.13 |
Page(s) | 106-112 |
Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
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Copyright © The Author(s), 2016. Published by Science Publishing Group |
Agrobacterium tumefaciens, Diphtheria Toxin, Negative Selectable Marker, Rice, Tobacco
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APA Style
Pachamuthu Kannan, Bharat Bhusan Majhi, Karuppannan Veluthambi. (2016). Evaluation of the Diphtheria Toxin A Subunit Gene (DT-A) as a Non-conditional Negative Selectable Marker in Tobacco and Rice. Journal of Plant Sciences, 4(5), 106-112. https://doi.org/10.11648/j.jps.20160405.13
ACS Style
Pachamuthu Kannan; Bharat Bhusan Majhi; Karuppannan Veluthambi. Evaluation of the Diphtheria Toxin A Subunit Gene (DT-A) as a Non-conditional Negative Selectable Marker in Tobacco and Rice. J. Plant Sci. 2016, 4(5), 106-112. doi: 10.11648/j.jps.20160405.13
@article{10.11648/j.jps.20160405.13, author = {Pachamuthu Kannan and Bharat Bhusan Majhi and Karuppannan Veluthambi}, title = {Evaluation of the Diphtheria Toxin A Subunit Gene (DT-A) as a Non-conditional Negative Selectable Marker in Tobacco and Rice}, journal = {Journal of Plant Sciences}, volume = {4}, number = {5}, pages = {106-112}, doi = {10.11648/j.jps.20160405.13}, url = {https://doi.org/10.11648/j.jps.20160405.13}, eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.jps.20160405.13}, abstract = {The diphtheria toxin A subunit gene (DT-A) from Corynebacterium diphtheriae inhibits protein synthesis in eukaryotes. In this study, toxicity of the DT-A gene was evaluated by a transgenic approach in tobacco and rice. The DT-A gene was cloned under transcriptional control of the CaMV 35S promoter and transformed into tobacco. Similarly, CaMV 35S and the maize Ubi1 promoter-driven DT-A gene constructs were transformed into rice. The deployment of the DT-A gene in both tobacco and rice drastically reduced the recovery of transgenic plants in comparison to pCAMBIA1301 (without DT-A). Southern blot analyses of the transgenic plants were done using the hph- and DT-A gene-specific probes to check the presence of the hph and DT-A genes. All the tobacco and rice transgenic plants showed hybridization to junction fragments upon using the hph gene probe. Southern blotting with the DT-A probe revealed that all the transgenic plants either did not have the DT-A gene or harboured truncated DT-A gene in the integrated T-DNAs. None of the transgenic plants carried the complete DT-A gene. The results showed that the DT-A gene can be used as a good non-conditional negative selectable marker in both tobacco and rice. Both CaMV 35S promoter- and Ubi1 promoter-driven DT-A genes were effective as non-conditional negative selectable markers in rice.}, year = {2016} }
TY - JOUR T1 - Evaluation of the Diphtheria Toxin A Subunit Gene (DT-A) as a Non-conditional Negative Selectable Marker in Tobacco and Rice AU - Pachamuthu Kannan AU - Bharat Bhusan Majhi AU - Karuppannan Veluthambi Y1 - 2016/08/29 PY - 2016 N1 - https://doi.org/10.11648/j.jps.20160405.13 DO - 10.11648/j.jps.20160405.13 T2 - Journal of Plant Sciences JF - Journal of Plant Sciences JO - Journal of Plant Sciences SP - 106 EP - 112 PB - Science Publishing Group SN - 2331-0731 UR - https://doi.org/10.11648/j.jps.20160405.13 AB - The diphtheria toxin A subunit gene (DT-A) from Corynebacterium diphtheriae inhibits protein synthesis in eukaryotes. In this study, toxicity of the DT-A gene was evaluated by a transgenic approach in tobacco and rice. The DT-A gene was cloned under transcriptional control of the CaMV 35S promoter and transformed into tobacco. Similarly, CaMV 35S and the maize Ubi1 promoter-driven DT-A gene constructs were transformed into rice. The deployment of the DT-A gene in both tobacco and rice drastically reduced the recovery of transgenic plants in comparison to pCAMBIA1301 (without DT-A). Southern blot analyses of the transgenic plants were done using the hph- and DT-A gene-specific probes to check the presence of the hph and DT-A genes. All the tobacco and rice transgenic plants showed hybridization to junction fragments upon using the hph gene probe. Southern blotting with the DT-A probe revealed that all the transgenic plants either did not have the DT-A gene or harboured truncated DT-A gene in the integrated T-DNAs. None of the transgenic plants carried the complete DT-A gene. The results showed that the DT-A gene can be used as a good non-conditional negative selectable marker in both tobacco and rice. Both CaMV 35S promoter- and Ubi1 promoter-driven DT-A genes were effective as non-conditional negative selectable markers in rice. VL - 4 IS - 5 ER -