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Comparison of Agrobacterium-mediated transformation of four barley cultivars using the GFP and GUS reporter genes

  • Genetic Transformation and Hybridization
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Abstract

Experiments were conducted to produce transgenic barley plants following infection of immature embryos with Agrobacterium tumefaciens. Transformed callus was obtained using hygromycin resistance as a selectable marker and either green fluorescent protein (GFP) or β-glucuronidase (GUS) as a reporter. Significantly reduced plant transformation frequencies were obtained with the GFP gene compared to GUS. However, GFP proved to be an excellent reporter of early transformation events and was used to compare four barley cultivars for efficiency in two phases of transformation: the generation of stably transformed barley callus and the regeneration of plantlets from transformed callus. Transformed callus was generated at a high frequency (47–76%) in all four cultivars. Regeneration of transformed plantlets was also achieved for all four cultivars although the frequency was much higher for Golden Promise than for the other three genotypes, reiterating that genotype is an important determinant in the regenerative ability of barley. This study has demonstrated for the first time that Agrobacterium-mediated transformation can be used to transform the Australian cultivars Sloop and Chebec.

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Acknowledgements

We thank Dr. J. Sheen (Harvard Medical School) for the gift of the sGFP(S65T) gene. The support of the Grains Research and Development Corporation (Australia) is gratefully acknowledged.

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Authors and Affiliations

  1. CSIRO Plant Industry, GPO Box 1600, ACT 2601, Canberra, Australia

    F. Murray, R. Brettell, P. Matthews, D. Bishop & J. Jacobsen

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  1. F. Murray
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  2. R. Brettell
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  3. P. Matthews
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  4. D. Bishop
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  5. J. Jacobsen
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Corresponding author

Correspondence to R. Brettell.

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Communicated by W. Harwood

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Murray, F., Brettell, R., Matthews, P. et al. Comparison of Agrobacterium-mediated transformation of four barley cultivars using the GFP and GUS reporter genes. Plant Cell Rep 22, 397–402 (2004). https://doi.org/10.1007/s00299-003-0704-8

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  • DOI: https://doi.org/10.1007/s00299-003-0704-8

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