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Production of fertile transgenic wheat plants by laser micropuncture

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Abstract

A modified, non-damaging, protocol for the production of fertile transgenic wheat (Triticum aestivum L. cultivar Giza 164) plants by laser micropuncture was developed. The new homemade setup secures the transformation of as many as 60 immature embryo-derived calli (10000 cells each) in less than one hour using a UV excimer laser with two dimensional translation stages, a suitable computer program and a proper optical system. Five-day-old calli were irradiated by a focused laser microbeam to puncture momentarily made self-healing holes (∼0.5 µm) in the cell wall and membrane to allow uptake of the exogenous DNA. The plant expression vector pAB6 containing bar gene as a selectable marker for the herbicide bialaphos resistance and GUS (uidA) gene as a reporter gene was used for transformation. No selection pressure was conducted during the four-week callus induction period. Induced calli were transferred to a modified MS medium with 1 mg l−1 bialaphos for regeneration, followed by selection on 2 mg l−1 bialaphos for rooting. Three regenerated putative transgenic events were evaluated for the integration and stable expression of both genes and results indicated that this modified procedure of laser-mediated transformation can be successfully used in transforming wheat.

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Authors and Affiliations

  1. National Institute of Laser Enhanced Sciences (NILES), Cairo Univ., Giza, Egypt

    Y. A. Badr, M. A. Kereim, M. A. Yehia & O. O. Fouad

  2. Agricultural Genetic Engineering Research Institute (AGERI), ARC, Giza, Egypt

    A. Bahieldin

  3. Dept. Genetics, Fac. Agric., Ain Shams Univ., Cairo, Egypt

    A. Bahieldin

Authors
  1. Y. A. Badr
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  2. M. A. Kereim
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  3. M. A. Yehia
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  4. O. O. Fouad
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  5. A. Bahieldin
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Correspondence to Y. A. Badr or A. Bahieldin.

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† Principal authors.

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Badr, Y.A., Kereim, M.A., Yehia, M.A. et al. Production of fertile transgenic wheat plants by laser micropuncture. Photochem Photobiol Sci 4, 803–807 (2005). https://doi.org/10.1039/b503658e

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  • DOI: https://doi.org/10.1039/b503658e

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