The South American forage legume Arachis pintoi was found to be affected by foliar ring spot symptoms in surveys of various localities in the Cauca Valley of Colombia. A filamentous virus (approximately 750 nm) isolated from symptomatic A. pintoi plants induced the characteristic ring spot sympto...
Morales, Francisco José
,
Castaño, M.
,
Velasco, Ana Cecilia
,
Arroyave, José A.
,
[Natural infection of tropical forage legume species of Arachis and Stylosanthes by potyviruses related to peanut mottle virus]
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Natural infection of tropical forage legume species of Arachis and Stylosanthes by potyviruses related to peanut mottle virus
Reyes Herrera, Luis Antonio
,
Yencho, G.C.
,
Velasco, Ana Cecilia
,
Calvert, Lee A.
,
[Comparación del porcentaje de vectores virulíferos (Tagosodes orizicolus) (Muir) [Homóptera: Delphacidae]) en el campo con el porcentaje de insectos con capacidad genética de transmitir el virus de la hoja blanca en zonas arroceras de Colombia]
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Comparación del porcentaje de vectores virulíferos (Tagosodes orizicolus) (Muir) [Homóptera: Delphacidae]) en el campo con el porcentaje de insectos con capacidad genética de transmitir el virus de la hoja blanca en zonas arroceras de Colombia
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 José
,
Lozano Potes, I
,
Castaño, M.
,
Arroyave, José A.
,
Velasco, Ana Cecilia
,
Varon de Agudelo, F.
,
[Partial characterization of a tymovirus infecting passion fruit in Colombia, South America]
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Partial characterization of a tymovirus infecting passion fruit in Colombia, South America
A filamentous virus approximately 775 nm long was isolated from variegated plants of the tropical forage grass Brachiaria spp. collected in Colombia and Brazil, South America. Ultrathin sections of symptomatic leaf tissue showed cylindrical inclusions (scrolls) in the cytoplasm of infected cells....
Morales, Francisco José
,
Castaño, M.
,
Velasco, Ana Cecilia
,
Arroyave, José A.
,
[Detection of a potyvirus related to guineagrass mosaic virus infecting Brachiaria spp. in South America]
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Detection of a potyvirus related to guineagrass mosaic virus infecting Brachiaria spp. in South America
A bacterial disease of rice not described previously has been observed in Central and South America. Symptoms are characterized by spreading brown blotches on the leaves. Systemic invasion by the pathogen causes necrosis of the vascular system of the leaves, resulting in their partial or total br...
Lozano, J.C.
,
Victoria Kafure, JI
,
Velasco, Ana Cecilia
,
Sang Won Ahn
,
[Bacterial brown blotch, a disease of rice in tropical America]
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Bacterial brown blotch, a disease of rice in tropical America
Nolt, Barry L.
,
Pineda López, Benjamín
,
Velasco, Ana Cecilia
,
[Surveys of cassava plantations in Colombia for virus and virus- like diseases]
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Surveys of cassava plantations in Colombia for virus and virus- like diseases
Large quantities of cassava common mosaic virus (CCMV) were purified from systemically infected Nicotiana benthamiana plants. A polyclonal antiserum, with a titre of 1/128 in the tube precipitin test, was produced by immunising rabbits with purified virus. Viral antigens were detected in cassava,...
Nolt, Barry L.
,
Velasco, Ana Cecilia
,
Pineda López, Benjamín
,
[Improved purification procedure and some serological and physical properties of cassava common mosaic virus from South America]
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Improved purification procedure and some serological and physical properties of cassava common mosaic virus from South America
Nolt, Barry L.
,
Pineda López, Benjamín
,
Velasco, Ana Cecilia
,
[Avances sobre identificación, detección y manejo de los virus de la yuca en América Latina]
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Avances sobre identificación, detección y manejo de los virus de la yuca en América Latina
Los geminivirus transmitidos por la mosca blanca Remisia tabaci Genn., han causado pérdidas considerables de producción en varios cultivos de importancia socioeconómica en regiones tropicales y subtropicales del mundo entero, incluyendo la mayoría de los países de la América Latina. En Colombia, ...
Morales, Francisco José
,
Muñoz, C.
,
Castaño Zapata, M.
,
Velasco, Ana Cecilia
,
[Geminivirus transmitidos por mosca blanca en Colombia]
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Geminivirus transmitidos por mosca blanca en Colombia
Se han presentado brotes de enfermedades virales antes desconocidas en habichuela y en tomate en varios municipios del Valle del Cauca. Las habichuelas presentan un arrugamiento foliar severo y amarillamiento moderado, mientras que el tomate muestra síntomas moderados de mosaico y deformación fol...
Morales, Francisco José
,
Martínez, A.K.
,
Velasco, Ana Cecilia
,
[Nuevos brotes de begomovirus en Colombia]
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Nuevos brotes de begomovirus en Colombia