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Cassava is one of the main carbohydrate sources in the tropics, and it has worldwide importance as basic food for millions of persons in America and Africa. This root crop is affected by cassava frog skin disease that in Colombia produces yield losses of almost 90%. A phytoplasma was associated w...


Álvarez, E.Mejía, Juan FernandoLlano Rodríguez, Germán AlbertoLoke, John Bernard[Detection and characterization of a phytoplasma associated with frog skin disease in cassava]Detection and characterization of a phytoplasma associated with frog skin disease in cassava

The application of biotechnology tools has made it possible to make significant advances in the detection of pathogens and in the study of the genetic variability of pathogen populations. As a result, adequate disease management strategies can be planned, and disease resistance markers for plants...


Álvarez, E.Llano Rodríguez, Germán AlbertoLoke, John BernardMejía De Los Rios, J.F.[Applying biotechnology tools to improve control diseases of some tropical crops]Applying biotechnology tools to improve control diseases of some tropical crops

Coffee crispiness (“crespera”), a disease of uncertain etiology, has been endemic in coffee (Coffea arabica L.) plantations in Colombia for at least 60 years. Symptoms typically consist of bud proliferation, abundant short and narrow leaves, phyllody, floral abortion, monospermic fruit, and dwarf...


Galvis Garcia, CALeguizamon Caycedo, JEGaitan, ALMejía De Los Rios, J.F.Álvarez, E.Arroyave, José A.[Detection and identification of a group 16SrIII-related phytoplasma associated with coffee crispiness disease in Colombia]Detection and identification of a group 16SrIII-related phytoplasma associated with coffee crispiness disease in Colombia

La Marchitez bacteriana o Moko del plátano causado por Ralstonia solanacearum E.F. Smith raza 2 es la enfermedad bacteriana más importante de este cultivo en Colombia. La técnica de BIO-RCP, se utilizó para detectar la bacteria. Inicialmente se colectaron un total de 337 muestras (193 de suelo y ...


Gómez Calvo, Eduardo AugustoÁlvarez, E.Llano Rodríguez, Germán Alberto[Identificación y caracterización de cepas de Ralstonia solanacearum raza 2, agente causante del moko del plátano en Colombia]Identificación y caracterización de cepas de Ralstonia solanacearum raza 2, agente causante del moko del plátano en Colombia

La Antracnosis, causada por el hongo Colletotrichum gloeosporioides, ocasiona pérdidas hasta del 90% en huertos no tecnificados de guanábana. Para el control de la enfermedad se requiere conocer bien la sintomatología y las características del agente causal. Teniendo en cuenta que existe poca inf...


Álvarez, E.Ospina, CAMejía De Los Rios, J.F.Llano Rodríguez, Germán Alberto[Caracterización morfológica, patogénica y genética del agente causal de la antracnosis (Colletotrichum gloeosporioides) en guanábana (Annona muricata) en el Valle del Cauca]Caracterización morfológica, patogénica y genética del agente causal de la antracnosis (Colletotrichum gloeosporioides) en guanábana (Annona muricata) en el Valle del Cauca

Up to 50% of Brachiaria production in the tropics is affected by foliar blight caused by Rhizoctonia spp. Monothallic isolates of Rhizoctonia (n = 147) were cultured from different Brachiaria genotypes in Colombia and morphologically characterized and evaluated in pathogenicity trials in the gree...


Álvarez, E.Latorre, M.Bonilla, Ximena P.Miles, John W.Sotelo, G.[Diversity of Rhizoctonia spp. causing Foliar Blight on Brachiaria in Colombia and Evaluation of Brachiaria Genotypes for Foliar Blight Resistance]Diversity of Rhizoctonia spp. causing Foliar Blight on Brachiaria in Colombia and Evaluation of Brachiaria Genotypes for Foliar Blight Resistance

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