Expression of uidA gene in tobacco transplastomic plants under the control of 5'-untranslated region of genomic RNA of potato virus Y

Authors

  • G. E. Stanbekova RSE “M.A. Ajtkhozhin Institute of Molecular Biology and Biochemistry”, Committee of science, MES RK, Almaty, Kazakhstan
  • D. K. Beisenov RSE “M.A. Ajtkhozhin Institute of Molecular Biology and Biochemistry”, Committee of science, MES RK, Almaty, Kazakhstan
  • A. A. Kalieva RSE “M.A. Ajtkhozhin Institute of Molecular Biology and Biochemistry”, Committee of science, MES RK, Almaty, Kazakhstan
  • B. K. Iskakov RSE “M.A. Ajtkhozhin Institute of Molecular Biology and Biochemistry”, Committee of science, MES RK, Almaty, Kazakhstan

DOI:

https://doi.org/10.26577/eb-2019-3-b12
        97 145

Abstract

Regulation of the expression of chloroplast genes mainly occurs at the post-transcriptional level, in which 5'-untranslated regions (5'UTR) of plastid mRNA play a significant role. In transplastomic tobacco plants, we studied the effect of the 5’UTRs of the genomic RNA of potato Y-virus (5’PVY), as well as the 5’UTR of the plastid psbA gene (5’psbA) on the expression of the bacterial reporter uidA gene encoding β-glucuronidase (GUS). Genetic constructs containing the uidA gene were created under the control of identical transcriptional regulatory elements: the promoter and terminator of the psbA gene and two different 5’UTRs — 5’psbA and 5’PVY. Тobacco chloroplasts were transformed with these constructs by bioballistic method. Transplastomic lines showed approximately 24-fold differences in GUS activity. Replacing the natural 5’psbA with the heterologous 5’PVY resulted in a significant decrease in the synthesis of GUS protein.

Key words: chloroplasts, protein synthesis, 5’UTR, transplastomic plants, reporter protein.

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How to Cite

Stanbekova, G. E., Beisenov, D. K., Kalieva, A. A., & Iskakov, B. K. (2020). Expression of uidA gene in tobacco transplastomic plants under the control of 5’-untranslated region of genomic RNA of potato virus Y. Experimental Biology, 80(3), 126–135. https://doi.org/10.26577/eb-2019-3-b12

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МOLECULAR BIOLOGY AND GENETICS

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