Skip to main content
Log in

Salt tolerance conferred by over-expression ofOsNHX1 gene in Poplar 84K

  • Articles
  • Published:
Chinese Science Bulletin

Abstract

OsNHX1 gene (Na+/H+ antiporter gene ofOryza sativa L.) was introduced into Poplar 84K withAgrobacterium tumefaciens- mediated transformation. PCR, Southern and Northern blot analysis showed thatOsNHX1 gene was incorporated successfully into the genome of Poplar 84K and expressed in these transgenic plants. Salt tolerance test showed that three lines of transgenic plants grew normally in the presence of 200 mmol/L NaCl, while the Na+ content in the leaves of the transgenic plants grown at 200 mmol/L NaCl was significantly higher than that in plants grown at 0 mmol/L NaCl. The osmotic potential in the transgenic plants with high salinity treatment was lower than that of control plants. Our results demonstrate the potential use of these transgenic plants for agricultural use in saline soils.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Similar content being viewed by others

References

  1. Yokoi, S., Bressan, R. A., Hasegawa, P. M., Salt stress tolerance of plant, JIRCAS Working Rep, 2002, 25–33.

  2. Blumwald, E., Aharon, G. S., Apse, M. P., Sodium transport in plant cells, Biochem. Biophys. Acta, 2000, 1465: 140–151.

    Article  PubMed  CAS  Google Scholar 

  3. Apse, M. P., Aharon, G. S., Snedden, W. A. et al., Salt tolerance conferred by overexpression of a vacuolar Na+/H+ antiport inArabidopsis, Science, 1999, 285: 1256–1258.

    Article  PubMed  CAS  Google Scholar 

  4. Zhang, H. X., Blumwald, E., Transgenic salt-tolerent tomato plants accumulate salt in foliage but not in fruit, Nat. Biotechnol., 2001, 19: 765–768.

    Article  PubMed  CAS  Google Scholar 

  5. Zhang, H. X., Hodson, J. N., Williams, J. P. et al., Engineering salt-tolerant Brassica plants: Characterization of yield and seed oil quality in transgenic plants with increased vacuolar sodium accumulation, Proc. Natl. Acad. Sci. USA, 2001, 98: 12832–12836.

    Article  PubMed  CAS  Google Scholar 

  6. Fukuda, A., Nakamura, A., Tanaka, Y., Molecular cloning and expression of the Na+/H+ exchanger gene inOryza sativa, Biochim. Biophys. Acta., 1999, 1446: 149–155.

    PubMed  CAS  Google Scholar 

  7. Fukuda, A., Nakamura, A., Tagiri, A., Function, intracellular localization and the importance in salt tolerance of a vacuolar Na+/H+ antiporter from rice, Plant Cell Physiol., 2004, 45(2): 146–159.

    Article  PubMed  CAS  Google Scholar 

  8. Horsch, R. B., Fry, T. E., Hoffmann, N. L. et al., A simple and general method for transferring genes into plants, Science, 1995, 227: 1227–1231.

    Google Scholar 

  9. Murray, M. G., Thompson, W. F., Rapid isolation of high-molecular-weight plant DNA, Nucl. Acids. Res., 1980, 8: 4321–4325.

    Article  PubMed  CAS  Google Scholar 

  10. Sambrook, J., Fritsch, E., Maninatis, T., Molecular Cloning: A Laboratory Manual, 2rd ed., New York: Cold Spring Harbor Laboratory, 1989.

    Google Scholar 

  11. Fan, J. F., Li, L., Han, Y. F. et al., Establishment of leaf-explant regeneration system of Poplar 84K, J Northwest Forestry University, 2002, 17(2): 33–36.

    Google Scholar 

  12. Chun, Y. W., Morphogenic potential of leaf, internode, and root explants fromPopulus alba × P. grandidentata plantlets, Forest and Humanity, 1990, 3: 31–44.

    Google Scholar 

  13. Fan, G. Q., Zhai, X. Q., Zhai, C. J. et al., Callus induction from leaves of differentPaulownia species and its plantlet regeneration Journal of Forestry Research, 2001, 12(4): 209–214.

    Article  Google Scholar 

  14. Brich, R. G., Plant transformation: Problems and strategies for practical application, Annu. Rev. Plant Physiol. Plant Mol. Biol., 1997, 48: 297–326.

    Article  Google Scholar 

  15. Denney, B. K., Petersen, W. L., Ford-Santino, C. et al., Comparison of selective agents for use with the selectable marker gene bar in maize transformation, Plant Cell, Tissue Organ Culture, 1994, 36: 1–7.

    Article  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Xuechen Wang.

About this article

Cite this article

Wang, S., Chen, Q., Wang, W. et al. Salt tolerance conferred by over-expression ofOsNHX1 gene in Poplar 84K. Chin.Sci.Bull. 50, 225–229 (2005). https://doi.org/10.1007/BF02897531

Download citation

  • Received:

  • Accepted:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF02897531

Keywords

Navigation