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A severe disease was observed in the potato variety Criolla Colombiana . Main symptomatology consisted of discoloration or yellowing of the whole plant, apical leafroll, dwarfing, axillary buds and thicker internodes. Phytoplasmas related to 16SrV and 16SrXII groups were identified by nested PCR...


Mejía, Juan FernandoContaldo, N.Paltrinieri, SPardo, Juan ManuelRios, CAÁlvarez, E.Bertaccini, A[Molecular detection and identification of group 16SrV and 16SrXII phytoplasma associated with potatoes in Colombia]Molecular detection and identification of group 16SrV and 16SrXII phytoplasma associated with potatoes in Colombia
Álvarez, E.Latorre Gonzalez, MAMiles, John W.Sotelo, G.Bonilla, Ximena P.[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

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
Álvarez, E.Claroz, José Luis[Characterization and classification of phytoplasmas associated with oil palm (Elaeis guineensis)]Characterization and classification of phytoplasmas associated with oil palm (Elaeis guineensis)

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

Cassava frogskin disease (CFSD) is an economically important root disease of cassava (Manihot esculenta) in Colombia and other South American countries, including Brazil, Venezuela, Peru, Costa Rica, and Panama. The roots of severely affected plants are thin, making them unsuitable for consumptio...


Álvarez, E.Mejía De Los Rios, J.F.Llano Rodríguez, Germán AlbertoLoke, John BernardCalari, ADuduk, BBertaccini, A[Characterization of a phytoplasma associated with frogskin disease in cassava]Characterization of a phytoplasma associated with frogskin disease in cassava
Llano Rodríguez, Germán AlbertoÁlvarez, E.Fregene, Martin A.Muñoz Flórez, Jaime Eduardo[Identifying QTLs and RGAs in cassava and their relationships with three Phytophthora species]Identifying QTLs and RGAs in cassava and their relationships with three Phytophthora species
Álvarez, E.Mejía De Los Rios, J.F.Huertas, CAVarón de Agudelo, FranciaLoke, John Bernard[Detection and molecular characterization of a phytoplasma associated with machorreo of lulo (Solanum quitoense) in Colombia]Detection and molecular characterization of a phytoplasma associated with machorreo of lulo (Solanum quitoense) in Colombia
Álvarez, E.Mejía De Los Rios, J.F.Llano Rodríguez, Germán AlbertoLoke, John Bernard[Characterization of Colletotrichum gloeosporioides, causal agent of anthracnose in soursop (Annona muricata) in Valle del Cauca, Colombia]Characterization of Colletotrichum gloeosporioides, causal agent of anthracnose in soursop (Annona muricata) in Valle del Cauca, Colombia

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