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  • Title: Complete nucleotide sequence of Oat necrotic mottle virus: a distinct Tritimovirus species (family Potyviridae) most closely related to Wheat streak mosaic virus.
    Author: Stenger DC, French R.
    Journal: Arch Virol; 2004 Mar; 149(3):633-40. PubMed ID: 14991449.
    Abstract:
    The RNA genome (9346 nucleotides) of Oat necrotic mottle virus (ONMV) was cloned and sequenced. Complete genome comparisons indicated that ONMV, currently classified as a rymovirus, was most closely related ( approximately 73% nucleotide, approximately 79% amino acid identity) to the tritimovirus Wheat streak mosaic virus (WSMV). ONMV encoded a single polyprotein, with proteinase cleavage sites very similar to those of WSMV. Pairwise comparison of ONMV and WSMV cistrons revealed that P3 was most conserved ( approximately 79% nucleotide, approximately 86% amino acid), whereas HC-Pro was most divergent ( approximately 67% nucleotide, approximately 69% amino acid). In contrast, the ONMV sequence was distantly related ( approximately 40% nt, approximately 26% amino acid identity) to that of the rymoviru s Ryegrass mosaic virus, with highest sequence conservation noted within the NIb cistron ( approximately 47% nucleotide, approximately 41% amino acid identity). These results firmly establish that ONMV is not a rymovirus but is instead a distinct species of the genus Tritimovirus.
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