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Improved expression of recombinant GFP using a replicating vector based on Beet curly top virus in leaf-disks and infiltrated Nicotiana benthamiana leaves

  • Kyung Il Kim
  • , Garry Sunter
  • , David M. Bisaro
  • , In Sik Chung

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)

Abstract

Recombinant green fluorescent protein (GFP) with a molecular mass of 29 kDa was transiently expressed in Agrobacterium-inoculated leaf-disks prepared from Nicotiana benthamiana plants. Expression of GFP from the Cauliflower mosaic virus (CaMV) 35 S promoter within a replicating vector based on the geminivirus Beet curly top virus (BCTV) was more than 3 times higher than from a control, non-replicating vector. Use of the Cassava vein mosaic virus (CsVMV) promoter in the BCTV replicating vector increased the expression of recombinant GFP 320% at the transcript level, compared to use of the control CaMV 35 S promoter. Expression of recombinant GFP from Agrobacterium-inoculated leaf-disks of N. benthamiana was further enhanced up to 240% in the presence of post-transcriptional gene silencing suppressor p19.

Original languageEnglish
Pages (from-to)103-112
Number of pages10
JournalPlant Molecular Biology
Volume64
Issue number1-2
DOIs
Publication statusPublished - May 2007

Bibliographical note

Funding Information:
Acknowledgements This work was supported by grants from the Biogreen 21 project, from the BK21 project, and from the Korea Science and Engineering Foundation through the Plant Metabolism Research Center, Kyung Hee University.

Copyright:
Copyright 2009 Elsevier B.V., All rights reserved.

Keywords

  • Beet curly top virus
  • Expression vector
  • Green fluorescent protein
  • Leaf-disks
  • Nicotiana benthamiana
  • Transient expression

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