Antibegomoviral activity of the agrobacterial virulence protein VirE2

Sukumaran Sunitha, Dolly Marian, Barbara Hohn, Karuppannan Veluthambi

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15 Scopus citations


Mungbean yellow mosaic geminivirus(MYMV) causes severe yellow mosaic disease in blackgram, mungbean, Frenchbean, pigeonpea, soybean and mothbean. We attempted to induce resistance against this virus using the transcriptional activator protein gene deleted in the C-terminal activation domain (TrAP-DAD) and Agrobacterium tumefaciens virE2. MYMV is known to replicate in agroinoculated tobacco leaf discs. Three transgenic tobacco plants which harboured a truncated MYMV transcriptional activator protein gene and two tobacco plants transformed with the octopine type A. tumefaciens virE2 gene were agroinoculated with an A. tumefaciens strain which harboured the partial dimers of both DNA A and DNA B of MYMV. The level of viral DNA accumulation in leaf discs of transgenic plants correlated inversely to the level of the MYMV TrAPDAD transcript. Two VirE2-transgenic plants, which complemented tumorigenesis of a virE2 mutant A. tumefaciens strain, effectively reducedMYMVDNAaccumulation in the leaf disc agroinoculation assay.

Original languageEnglish
Pages (from-to)445-453
Number of pages9
JournalVirus Genes
Issue number3
StatePublished - Dec 2011


  • AC2
  • Agrobacterium virE2
  • Agroinoculation
  • Geminivirus
  • MYMV
  • TrAP


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