Plant Cell Reports

, Volume 14, Issue 5, pp 285–289

Transformation of sunflower (Helianthus annuus L.) following wounding with glass beads

  • W. Scott Grayburn
  • Brady A. Vick


A procedure was developed for transformation of Helianthus annuus (sunflower) using Agrobacterium tumefaciens. Cotyledons were removed from young seedlings, and the remaining tissue was uniformly wounded by shaking with glass beads. The wounded tissue was then co-cultivated with a hypervirulent strain of Agrobacterium tumefaciens harboring the binary plasmid pCNL56. Minimal use of defined medium was required, and no callus was observed. The polymerase chain reaction (PCR) followed by DNA hybridization demonstrated the presence of gusA DNA from pCNL56 in total leaf DNA of 6 primary transformants and 2 progeny plants. No Agrobacterium DNA was detected in total DNA from transformed sunflower leaves that was amplified with primers specific to the miaA chromosomal gene of Agrobacterium. Foreign DNA was also detected in the next generation. β-Glucuronidase (GUS) activity was demonstrated for 5 of the T2 transgenic plants. Grafting was used to increase the number of seeds present on plants that had undergone tissue culture manipulations.



polymerase chain reaction


European Molecular Biology Laboratory






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Copyright information

© Springer-Verlag 1995

Authors and Affiliations

  • W. Scott Grayburn
    • 1
  • Brady A. Vick
    • 1
  1. 1.United States Department of AgricultureAgricultural Research Service, Northern Crop Science LaboratoryFargoUSA

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