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Factors influencing transformation frequency of tomato (Lycopersicon esculentum)

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Abstract

We developed an efficient procedure for transformation and regeneration of L. esculentum cv. Moneymaker from cotyledon explants. The effect of two parameters on the transformation frequency was investigated in detail. The use of feeder layers during cocultivation proved to be critical. In addition, it was found that Agrobacterium strains harbouring a L,L-succinamopine type helper plasmid yielded significantly higher transformation frequencies than those with octopine or nopaline type helper plasmids. The optimized protocol was used to obtain transformation frequencies averaging 9%. Of the plants produced approximately 80% proved to be diploid, of which 67% contained the transgene(s) on a single locus.

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Abbreviations

2,4D:

2,4-dichlorophenoxy-acetic acid

gus:

ß-glucoronidase

IAA:

indoleacetic acid

LB:

Luria-Bertani

NPTII:

neomycin phosphotransferase II

ZR:

zeatin riboside

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Author notes

  1. André Hoekema

    Present address: Gist Brocades NV, Postbus 1, 2600, MA Delft, The Netherlands

Authors and Affiliations

  1. MOGEN International NV, Einsteinweg 97, 2333, CB Leiden, The Netherlands

    Jeroen S. C. van Roekel, Brigitte Damm, Leo S. Melchers & André Hoekema

Authors
  1. Jeroen S. C. van Roekel
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  2. Brigitte Damm
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  3. Leo S. Melchers
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  4. André Hoekema
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Communicated by M.R. Davey

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van Roekel, J.S.C., Damm, B., Melchers, L.S. et al. Factors influencing transformation frequency of tomato (Lycopersicon esculentum). Plant Cell Reports 12, 644–647 (1993). https://doi.org/10.1007/BF00232816

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  • DOI: https://doi.org/10.1007/BF00232816

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