title: Sequence of Echinochloa hoja blanca tenuivirus RNA-3.
abstract: Analysis of the sequence of the 2336 nucleotide RNA-3 of Echinochloa hoja blanca tenuivirus shows that it is closely related to RNA-3 of rice hoja blanca tenuivirus, the principal virus disease of rice in Latin America. This is especially true for the coding regions, where the viruses are almost 90% similar. However, the non-coding regions of RNA-3 of these viruses, principally the intergenic region separating the two ambisense open reading frames, are only about 50% similar, suggesting that these are distinct viruses. The results closely resemble those obtained for the analysis of RNA-4 of these viruses, both in the absolute and relative percentage similarities of the coding and non-coding regions. This implies a coordinated evolution of the different tenuivirus RNA segments. The features of the RNA and the comparisons with the sequences of RNA-3 of RHBV, rice stripe virus (RStV) and maize stripe virus (MStV) are discussed.
authors.affiliation: CIBCM, University of Costa Rica, San José, Costa Rica.
authors.forename: J R
authors.initials: JR
authors.lastname: de Miranda
authors.forename: M
authors.initials: M
authors.lastname: Muñoz
authors.forename: J
authors.initials: J
authors.lastname: Madriz
authors.forename: R
authors.initials: R
authors.lastname: Wu
authors.forename: A M
authors.initials: AM
authors.lastname: Espinoza
mesh_terms: D000595:Amino Acid Sequence; D001483:Base Sequence; D008969:Molecular Sequence Data; D012275:Oryza / Q000821:virology; D010942:Plant Viruses / Q000235:genetics*; D012328:RNA Viruses / Q000235:genetics*; D012367:RNA, Viral / Q000032:analysis*; D012689:Sequence Homology, Nucleic Acid
chemical_list: D012367:RNA, Viral