1- Adams M.J., and Antoniw J.F. 2004. The new plant virus family Flexiviridae and assessment of molecular criteria for species demarcation. Archive of Virology, 149:1045–1060.
2- Brunt A.A., Crabtree K., Dallwitz M.J., Gibbs A.J., Watson L., and Zurcher, E.J. 1996. `Plant Viruses Online: Descriptions and Lists from the VIDE Database.
3- Cavileer T.D., Clarke R.C., Corsini D.L., and Berger P.H. 1998. A new strain of potato carlavirus M. Plant Disease, 82:98-102.
4- Clark M.F., and Adams A.N. 1977. Characteristics of the microplate method of enzyme linked immunosorbent assay for the detection of plant viruses. Journal of General Virology, 34:475-483.
5- Cox B.A., and Jones R.A.C. 2010. Genetic variability in the coat protein gene of Potato virus S isolates and distinguishing its biologically distinct strains. Archive of Virology, 155:1163–1169.
6- Flatken S., Ungewickell V., Menzel W., and Maiss, E. 2008. Construction of an infectious full-length cDNA clone of potato virus M. Archive of Virology, 153:1385–1389.
7- Foster G.D., and Mills P.R. 1992. The 3´-nucleotide sequence of an ordinary strain of potato virus S. Virus Genes, 6:213–220.
8- Ge B.B., He Z., Jiang D.M., Zhang Z.X., Liu G.J., and Wang H.Q. 2012. Characterization and complete nucleotide sequence of potato virus M isolated from tomato in China. Acta Virology, 56(3):261-263.
9- Gramstat A., Courtpozanis A., and Rohde W. 1990. The 12-kDa protein of potato virus M displays properties of a nucleic acid-binding regulatory protein. FEBS Letters, 276:34-38.
10- Jafarpour B. 1989. Identification of Potato Virus S and Potato Virus X in Mashhad. P. 166. Proceedings of the 9th Iranian Plant Protection Congress.
11- Mahy B.W.J., and Van Regenmortel M.H.V. 2010. Desk Encyclopedia of Plant and Fungal Virology. Elsevier Academic Press, 4.
12- Martelli G.P., Adams M.J., Kreuze J.F., and Dolja, V.V. 2007. Family flexiviridae: a case study in virion and genome plasticity. Phytopathology, 45:73-100.
13- Matousek J., Schubert J., Dedic P., and Pta´cek, J. 2000. A broad variability of potato virus S (PVS) revealed by analysis of virus sequences amplified by reverse transcriptase polymerase chain reaction. Canadian Journal of Plant Pathology, 22:29–37.
14- Matousek J., Schubert J., Pta´cek J., Kozlova´ P., and Dedic, P. 2005. Complete nucleotide sequence and molecular probing of potato virus S genome. Acta Virology, 49:195–205.
15- Naghibzade M., Jafarpour B., and Falahati rastegar M. 2008. Identification and Distribution of Potato Virus A in Razavi and Northern Provinces of Iran. P. 520. Proceedings of the 18th Iranian Plant Protection Congress.
16- Pourrahim R., Farzadfar Sh., Golnaraghi A.R. and Ahoonmanesh A. 2007. Incidence and distribution of important viral pathogens in some Iranian potato fields. Plant Disease, 91:609-615.
17- Rupasov V.V., Morozov S.YU., Kanyuka K.V., and Zavriev, S.K. 1989. Partial nucleotide sequence of potato virus M RNA shows similarities to potexviruses in gene arrangement and the encoded amino acid sequences. Journal of General Virology, 10:1861-1869.
18- Salari Kh., Massumi H., Heydarnejad J., Hosseini pour A. and Varsani, A. 2011. Analysis of Iranian Potato virus S isolates. Virus Genes, 43:281–288.
19- Schultz E.S., and Folsom D. 1923. Transmission, variation, and control of certain degeneration diseases of Irish potatoes. Journal of Agricultural Research, 25:43-147.
20- Senshu H., Yamaji Y., Minato N., Shiraishi T., and Maejima K. 2011. A dual strategy for the suppression of host antiviral silencing: two distinct suppressors for viral replication and viral movement encoded by potato virus M. Journal of Virology, 85:10269-10278.
21- Xu H., D'Aubin J., and Nie, J. 2010. Genomic variability in Potato virus M and the development of RT-PCR and RFLP procedures for the detection of this virus in seed potatoes. Virology journal, 7(1):25.
