Plant Cell Reports

, Volume 12, Issue 11, pp 644–647 | Cite as

Factors influencing transformation frequency of tomato (Lycopersicon esculentum)

  • Jeroen S. C. van Roekel
  • Brigitte Damm
  • Leo S. Melchers
  • André Hoekema
Article

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.

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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Copyright information

© Springer-Verlag 1993

Authors and Affiliations

  • Jeroen S. C. van Roekel
    • 1
  • Brigitte Damm
    • 1
  • Leo S. Melchers
    • 1
  • André Hoekema
    • 1
  1. 1.MOGEN International NVCB LeidenThe Netherlands

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