Arabidopsis thaliana MCM2 plays role(s) in mungbean yellow mosaic India virus (MYMIV) DNA replication

Arabidopsis thaliana MCM2 plays role(s) in mungbean yellow mosaic India virus (MYMIV) DNA... Geminiviruses are plant pathogens with single-stranded (ss) DNA genomes of about 2.7 kb in size. They replicate primarily via rolling-circle replication (RCR) with the help of a few virally encoded factors and various host-cell machineries. The virally encoded replication initiator protein (Rep) is essential for geminivirus replication. In this study, by interaction screening of an Arabidopsis thaliana cDNA library, we have identified a host factor, MCM2, that interacts with the Rep protein of the geminivirus mungbean yellow mosaic India virus (MYMIV). Using yeast two-hybrid, β-galactosidase and co-immunoprecipitation assays, we demonstrated an interaction between MYMIV-Rep and the host factor At MCM2. We investigated the possible role of At MCM2 in geminiviral replication using a yeast-based geminivirus DNA replication restoration assay and observed that the At MCM2 protein complemented the mcm2∆ mutation of S. cerevisiae . Our data suggest the involvement of At MCM2 in the replication of MYMIV ex vivo . The role of MCM2 in replication was confirmed in planta by a transient replication assay in both wild-type and mutant Arabidopsis plants through agroinoculation. Our data provide evidence for the involvement of At MCM2 in geminiviral DNA replication, presumably in conjunction with other host factors, and suggest its importance in MYMIV DNA replication. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Virology Springer Journals

Arabidopsis thaliana MCM2 plays role(s) in mungbean yellow mosaic India virus (MYMIV) DNA replication

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Publisher
Springer Vienna
Copyright
Copyright © 2013 by Springer-Verlag Wien
Subject
Biomedicine; Virology; Medical Microbiology; Infectious Diseases
ISSN
0304-8608
eISSN
1432-8798
D.O.I.
10.1007/s00705-012-1563-9
Publisher site
See Article on Publisher Site

Abstract

Geminiviruses are plant pathogens with single-stranded (ss) DNA genomes of about 2.7 kb in size. They replicate primarily via rolling-circle replication (RCR) with the help of a few virally encoded factors and various host-cell machineries. The virally encoded replication initiator protein (Rep) is essential for geminivirus replication. In this study, by interaction screening of an Arabidopsis thaliana cDNA library, we have identified a host factor, MCM2, that interacts with the Rep protein of the geminivirus mungbean yellow mosaic India virus (MYMIV). Using yeast two-hybrid, β-galactosidase and co-immunoprecipitation assays, we demonstrated an interaction between MYMIV-Rep and the host factor At MCM2. We investigated the possible role of At MCM2 in geminiviral replication using a yeast-based geminivirus DNA replication restoration assay and observed that the At MCM2 protein complemented the mcm2∆ mutation of S. cerevisiae . Our data suggest the involvement of At MCM2 in the replication of MYMIV ex vivo . The role of MCM2 in replication was confirmed in planta by a transient replication assay in both wild-type and mutant Arabidopsis plants through agroinoculation. Our data provide evidence for the involvement of At MCM2 in geminiviral DNA replication, presumably in conjunction with other host factors, and suggest its importance in MYMIV DNA replication.

Journal

Archives of VirologySpringer Journals

Published: May 1, 2013

References

  • DNA replication in eukaryotic cells
    Bell, SP; Dutta, A
  • Proliferating cell nuclear antigen transcription is repressed through an E2F consensus element and activated by geminivirus infection in mature leaves
    Egelkrout, EM; Robertson, D; Hanley-Bowdoin, L
  • DNA replication and cell cycle in plants: learning from geminiviruses
    Gutierrez, C
  • Genomic libraries and a host strain designed for highly efficient two-hybrid selection in yeast
    James, P; Halladay, J; Craig, EA
  • A geminivirus replication protein interacts with the retinoblastoma protein through a novel domain to determine symptoms and tissue specificity of infection in plants
    Kong, LJ; Orozco, BM; Roe, JL; Nagar, S; Ou, S; Feiler, HS; Durfee, T; Miller, AB; Gruissem, W; Robertson, D; Hanley-Bowdoin, L
  • The S-phase checkpoint: targeting the replication fork
    Segurado, M; Tercero, JA
  • The Dbf4-Cdc7 kinase promotes S phase by alleviating an inhibitory activity in Mcm4
    Sheu, YJ; Stillman, B

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