Plant Cell, Tissue and Organ Culture

, Volume 92, Issue 3, pp 321–325

Expression of hybrid cry3aM–licBM2 genes in transgenic potatoes (Solanum tuberosum)

  • Gholamreza Salehi Jouzani
  • Irina V. Goldenkova
  • Eleonora S. Piruzian
Research note

Abstract

The full-modified Bacillus thuringiensis cry3a (cry3aM) gene was designed and synthesized for effective expression in plants. A plant expression vector pC29RBCS-leader-cry3aM–licBM2 was constructed for potato transformation. In this vector, the cry3aM sequence was fused in reading frame with a new reporter gene (licBM2) and a leader sequence for the rbcs gene. The reporter gene encoded thermostable lichenase and the leader sequence encoded a signal peptide for transporting protein product to chloroplasts. The vector contained the light-inducible promoter for rbcs gene isolated from Arabidopsis thaliana. Transgenic plants were obtained by Agrobacterium mediated transformation using microtuber explants. Transgenic plantlets were selected by kanamycin resistance and confirmed as transgenic by PCR with specific primers, evaluation of lichenase activity, and bioassay of Colorado potato beetle neonate larvae. Promoter activity assays under light induction (kinetic analysis) using lichenase activity and bioassay both showed high and stable expression of hybrid genes in transgenic plantlets. Furthermore, the presence of lichenase as a reporter protein in the composition of hybrid protein was shown to facilitate selection and analysis of the expression level of hybrid genes in transgenic plants.

Keywords

Bacillus thuringiensis β-1,3-1,4 Glucanase Clostridium thermocellum Colorado potato beetle Lichenase Full modified cry3a gene Reporter gene Transgenic potato Yeasts 

Abbreviations

CPB

Colorado potato beetle

Bt

Bacillus thuringiensis

cry3aM

Full modified cry3a gene

DNS

3,5 Dinitrosalicylic acid

LicB

Lichenase

Rbcs

Rib-1,5-bisphospate carboxylase gene

Copyright information

© Springer Science+Business Media B.V. 2007

Authors and Affiliations

  • Gholamreza Salehi Jouzani
    • 1
  • Irina V. Goldenkova
    • 2
  • Eleonora S. Piruzian
    • 2
  1. 1.Agricultural Biotechnology Research Institute of Iran (ABRII)KarajIran
  2. 2.Functional Genomics DepartmentVavilov Institute of General Genetics, Russian Academy of SciencesMoscowRussia

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