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African oil palm ringspot virus (AOPRV) had been previously described as a fovea-like virus associated with a lethal disease of African oil palm (Elaeis guineensis) in South America. The original report was based on partial sequence and a distant relationship between AOPRV and Apple stem pitting ...


Lozano Potes, IMorales, Francisco JoséMartínez, A.K.Pena, E[Molecular characterization and detection of African oil palm ringspot virus]Molecular characterization and detection of African oil palm ringspot virus

The complete nucleotide sequences of RNAs 1 and 2 of Rice stripe necrosis virus (RSNV) were determined and compared to the corresponding genomes of all sequenced, rod-shaped plant viruses. The genome organisation of RSNV RNA1 and RNA2 is nearly identical to that of Beet necrotic yellow vein virus...


Lozano Potes, IMorales, Francisco José[Molecular characterisation of rice stripe necrosis virus as a new species of the genus benyvirus]Molecular characterisation of rice stripe necrosis virus as a new species of the genus benyvirus

The complete sequence office hoja blanca virus (RHBV) RNA4 has been determined, based on the sequence of the corresponding eDNA clones. RNA4 consists of 1991 nucleotides with two open reading frames (ORFs). One putative ORF is located in the 5'-proximal region of the viral RNA4; it encodes a prot...


Ramírez, B.C.Lozano Potes, IConstantino, LMHaenni, AL[Complete nucleotide sequence and coding strategy of rice hoja blanca virus RNA4]Complete nucleotide sequence and coding strategy of rice hoja blanca virus RNA4

Cassava Frogskin Disease (CFSD) can cause severe damage to cassava roots and is one of the most important diseases of cassava in Latin America. The principal objective of this study was to identify the causal agent of CFSD. Electron microscopy, viral purifications, double-stranded RNA (dsRNA) ana...


Calvert, Lee A.Cuervo Ibáñez, MaritzaLozano Potes, IVillareal, N.Arroyave, José A.[Identification of three strains of a virus associated with cassava plants affected by Frogskin disease]Identification of three strains of a virus associated with cassava plants affected by Frogskin disease

A virus with filamentous particles approximately 750 nm long was isolated from African oil palm (Elaeis guineensis) with `chlorotic ring' leaf symptoms in south-western Colombia. The virus was mechanically transmitted from oil palm to brachiaria, maize, sorghum, and sugarcane (Gramineae) but not ...


Morales, Francisco JoséLozano Potes, ISedano Cruz, RECastaño, M.Arroyave, José A.[Partial characterization of a potyvirus infecting African oil palm in South America]Partial characterization of a potyvirus infecting African oil palm in South America

A tymovirus was isolated from passion fruit plants with conspicuous yellow mosaic leaf symptoms in Colombia. Partial sequencing of its genome showed that this virus is distinct from other tymoviruses for which nucleotide sequences are available; it had only 60 76% homology with the closest relate...


Morales, Francisco JoséLozano Potes, ICastaño, M.Arroyave, José A.Velasco, Ana CeciliaVaron de Agudelo, F.[Partial characterization of a tymovirus infecting passion fruit in Colombia, South America]Partial characterization of a tymovirus infecting passion fruit in Colombia, South America

Rice hoja blanca virus (RHBV) is a major virus disease of economic importance affecting rice in northern South America, Central America and the Caribbean. This is the first report of transgenic resistance to RHBV and the transformation of an indica rice variety from Latin America. Rice transforme...


Lentini, ZLozano Potes, ITabares, EFory Sánchez, L.F.Domínguez, J.Cuervo Ibáñez, MaritzaCalvert, Lee A.[Expression and inheritance of hypersensitive resistance to rice hoja blanca virus mediated by the viral nucleocapsid protein gene in transgenic rice]Expression and inheritance of hypersensitive resistance to rice hoja blanca virus mediated by the viral nucleocapsid protein gene in transgenic rice

En 1998 se inició una investigación para determinar la etiología a de dos enfermedades de aparente naturaleza viral, que afectan el cultivo de la palma africana de aceite en el suroccidente colombiano. La pre sencia de la mancha anular se registré por primera vez en 1985, en el municipio de Tum...


Morales, Francisco JoséLozano Potes, IArroyave, José A.Castaño, M.Sedano Cruz, REVelasco, Ana Cecilia[Enfermedades virales de la palma de aceite en el suroccidente colombiano y sus agentes causales]Enfermedades virales de la palma de aceite en el suroccidente colombiano y sus agentes causales

Se visitaron 11 departamentos productores de maracuyá (Passiflora edulis) en Colombia, donde se colectaron 338 muestras de plantas del frutal aparentemente afectadas por enfermedades virales. El análisis de estas muestras se realizó mediante técnicas de patogenicidad, microscopia electrónica, ser...


Morales, Francisco JoséLozano Potes, IMuñoz, C.Castaño Zapata, M.Arroyave, José A.Varón de Agudelo, FranciaChavez, B.Castillo, GP[Caracterización molecular de los virus que afectan al maracuyá (Passiflora edulis Sims) y otras passifloras en Colombia]Caracterización molecular de los virus que afectan al maracuyá (Passiflora edulis Sims) y otras passifloras en Colombia

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