University of Tehran Iranian Journal of Plant Protection Science 2008-4781 50 2 2020 02 20 Molecular and phylogenetic characteristics of sunflower isolate of Bean ‎yellow mosaic virus ‎ Molecular and phylogenetic characteristics of sunflower isolate of Bean ‎yellow mosaic virus ‎ 261 276 75911 10.22059/ijpps.2019.287135.1006901 FA Mohammad Morad Moradi Former M.Sc. Student, Department of Plant Protection, Faculty of Agriculture, Vali-e-Asr University of ‎Rafsanjan, Rafsanjan, Iran Ahmad Hosseini Assistant Professor, Department of Plant Protection, Faculty of Agriculture, Vali-e-Asr University of ‎Rafsanjan, Rafsanjan, Iran Samin Hosseini Farhangi Assistant Professor, Department of Plant Protection, Faculty of Agriculture, Vali-e-Asr University of Rafsanjan, Rafsanjan, Iran Journal Article 2019 08 18 Bean yellow mosaic virus (BYMV) is one of the most important members of the genus Potyvirus that is distributed worldwide. In the present study, the complete genome sequence and molecular characteristics of a BYMV sunflower isolate (BYSun) from Iran has been reported. The complete nucleotide sequence of BYSun was determined using degenerate and specific primers and 5`-RACE. The viral genome comprises 9547 nucleotides, excluding a 3´-terminal poly (A) sequence. The genome of BYSun has a 206 nt 5´-non coding and a 171 nt 3´-non coding region. The RNA encodes a single polyprotein of 3056 amino acid residues and has a deduced genome organization typical for the members of the genus Potyvirus and nine cleavage sites of the polyprotein were predicted. The small overlapping ORF (PIPO) in the P3 gene was also deduced. When analyzed using the RDP4 program, at least one recombination breakpoint was identified in BYSun genome. BYSun along with 23 full-length sequences of BYMV isolates from Genbank were subjected to phylogenetic analysis that showed the highest nucleotide and amino acid sequence identitywith Australian isolate of BYMV-S isolated from Broad bean. Phylogenetic analysis of different BYMV isolates sequences revealed existence of six to eight phylogenetic groupings depending on parts of investigated genome. BYSun and BYMV-S grouped apart from other isolates and were placed within a distinct group, currently designated “S”. This is the first report of a full-length sequence of a BYMV isolate from Iran. Bean yellow mosaic virus (BYMV) is one of the most important members of the genus Potyvirus that is distributed worldwide. In the present study, the complete genome sequence and molecular characteristics of a BYMV sunflower isolate (BYSun) from Iran has been reported. The complete nucleotide sequence of BYSun was determined using degenerate and specific primers and 5`-RACE. The viral genome comprises 9547 nucleotides, excluding a 3´-terminal poly (A) sequence. The genome of BYSun has a 206 nt 5´-non coding and a 171 nt 3´-non coding region. The RNA encodes a single polyprotein of 3056 amino acid residues and has a deduced genome organization typical for the members of the genus Potyvirus and nine cleavage sites of the polyprotein were predicted. The small overlapping ORF (PIPO) in the P3 gene was also deduced. When analyzed using the RDP4 program, at least one recombination breakpoint was identified in BYSun genome. BYSun along with 23 full-length sequences of BYMV isolates from Genbank were subjected to phylogenetic analysis that showed the highest nucleotide and amino acid sequence identitywith Australian isolate of BYMV-S isolated from Broad bean. Phylogenetic analysis of different BYMV isolates sequences revealed existence of six to eight phylogenetic groupings depending on parts of investigated genome. BYSun and BYMV-S grouped apart from other isolates and were placed within a distinct group, currently designated “S”. This is the first report of a full-length sequence of a BYMV isolate from Iran.

https://ijpps.ut.ac.ir/article_75911_61f086c5d64c96e0f3c92b6ff72d80f8.pdf