Molecular Breeding

, Volume 23, Issue 2, pp 269–277

The salt-tolerance gene rstB can be used as a selectable marker in plant genetic transformation

  • Wan-Jun Zhang
  • Su-Sheng Yang
  • Xiao-Ye Shen
  • Yong-Sheng Jin
  • Hui-Jun Zhao
  • Tao Wang


The salt-tolerance gene rstB under the control of the cauliflower mosaic virus 35S promoter was used as a selectable marker gene in the Agrobacterium tumefaciens-mediated transformation of tobacco (Nicotiana tabacum cv. Xanthi). The selective agent for plant regeneration was tolerance to 170 mM sodium chloride. The highest selection efficiency was 83.3%. No obvious differences in selection efficiencies were observed when those obtained using the standard selectable marker gene hpt and a selection regime of 10 mg l−1 hygromycin. Transgenic events were confirmed by PCR, Southern blot, RT-PCR and green fluorescent protein studies. The rstB transgenic plants showed improved salt tolerance and a normal phenotype. Based on these results, we suggest that the rstB gene may be used as a promising selectable marker and an alternative to the antibiotic- or herbicide-resistance genes in plant transformation.


NaCl Plant transformation Salt tolerance Selectable marker Selection reagent 

Supplementary material

11032_2008_9231_MOESM1_ESM.docx (2.4 mb)
Supplementary figures (DOCX 2497 kb)


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Copyright information

© Springer Science+Business Media B.V. 2008

Authors and Affiliations

  • Wan-Jun Zhang
    • 1
    • 2
  • Su-Sheng Yang
    • 3
  • Xiao-Ye Shen
    • 1
  • Yong-Sheng Jin
    • 1
  • Hui-Jun Zhao
    • 1
  • Tao Wang
    • 1
  1. 1.State Key Laboratory for Agro-biotechnologyChina Agricultural UniversityHaidian, BeijingPeople’s Republic of China
  2. 2.Plant Molecular Biotechnology Laboratory, Agriculture and food SystemUniversity of MelbourneMelbourneAustralia
  3. 3.Department of Microbiology and ImmunologyChina Agricultural UniversityHaidian, BeijingPeople’s Republic of China

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