Shorter T-DNA or additional virulence genes improve Agrobactrium-mediated transformation

S. H. Park, B. M. Lee, M. G. Salas, M. Srivatanakul, R. H. Smith

Research output: Contribution to journalArticlepeer-review

31 Scopus citations

Abstract

The effect of additional virulence (vir) genes and size of plasmid T-DNA in Agrobacterium tumefaciens was investigated for their impact on transformation efficiency. Transformation efficiency in tobacco, cotton, and rice was increased when the T-DNA was 4.3 kb compared to 8.4 kb in size. However, when additional virG, virGN54D, virE, or virE/virG plasmids were included with the 8.4-kb T-DNA, transformation frequencies in all cases were increased over that of the shorter T-DNA without additional vir plasmids. The use of virE, virG or virGN54D copies enhanced transformation efficiency; however, the most significant increase of transformation efficiency in all three plant species was observed when the virE/virG plasmid was used for infection. The virE/virG plasmid dramatically enhanced the efficiency of Agrobacterium-mediated gene transfer; moreover, this plasmid appears to have broad efficiency since it was consistently effective on two different dicotyledon species as well as a monocotyledon species.

Original languageEnglish
Pages (from-to)1015-1020
Number of pages6
JournalTheoretical And Applied Genetics
Volume101
Issue number7
DOIs
StatePublished - 2000

Keywords

  • Agrobacterium
  • Cotton
  • Rice
  • Tobacco
  • Virulence genes

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