Listar Agronomía por procedencia "UCR::Vicerrectoría de Investigación::Unidades de Investigación::Ciencias Básicas::Centro de Investigación en Biología Celular y Molecular (CIBCM)"

Mostrando ítems 41-60 de 79

    • First Report of Xylella fastidiosa in Avocado in Costa Rica 

      Montero Astúa, Mauricio; Saborío Rodríguez, Guido Alonso; Chacón Díaz, Carlos; Garita Salazar, Laura Cristina; Villalobos Muller, William; Moreira Carmona, Lisela; Hartung, John; Rivera Herrero, Carmen (2008-01)
      Since the late 1990s, chlorotic mottling, marginal scorch, deformation of leaves, defoliation, shortening of internodes, and branch dieback have been observed in avocado trees (Persea americana Mill.) in Costa Rica. The ...

    • First Report of Xylella fastidiosa in Nerium oleander in Costa Rica 

      Montero Astúa, Mauricio; Saborío Rodríguez, Guido Alonso; Chacón Díaz, Carlos; Villalobos Muller, William; Rodríguez Solís, Carlos Mario; Moreira Carmona, Lisela; Rivera Herrero, Carmen (2008-08)
      Oleander (Nerium oleander L.) shrubs presenting mottling, leaf tip and margin scorch, short internodes, defoliation, and branch dieback were observed at different localities in the Central Valley in Costa Rica. Severity ...

    • First Report of Xylella fastidiosa Infecting Citrus in Costa Rica 

      Aguilar Alvarez, Estela Yamileth; Villalobos Muller, William; Moreira Carmona, Lisela; Rodríguez Solís, Carlos Mario; Kitajima, Elliot Watanabe; Rivera Herrero, Carmen (2005-06)
      Citrus variegated chlorosis (CVC) is an important disease mainly of sweet orange (Citrus sinensis (L.) Osbeck) cultivars. It was first described in Brazil in the state of Sā Paulo in 1987 (4). The disease has spread to all ...

    • First report of Xylella fastidiosa infecting coffee in Costa Rica 

      Rodríguez Solís, Carlos Mario; Obando Jiménez, Juan José; Villalobos Muller, William; Moreira Carmona, Lisela; Rivera Herrero, Carmen (2001-09)
      In 1995, severe symptoms were observed on ‘Caturra’ and ‘Catuaí’ coffee (Coffea arabica L.) varieties in farms in the southern part of the Central Valley in Costa Rica. Symptoms were reduced leaf size, malformation of ...

    • Fitopatología y comportamientos culturales: posible introducción de la cepa de chaya del Cassava common mosaic virus en Costa Rica 

      Montero Astúa, Mauricio; Sandoval Carvajal, Izayana; Moreira Carmona, Lisela; Villalobos Muller, William; Garita Salazar, Laura Cristina; Carvajal Rojas, Sofía (2023-12-30)
      Objetivo/Antecedentes. Las hojas del arbusto de chaya (Cnidoscolus aconitifolius) o árbol espinaca, o chicasquil (en Costa Rica), son parte de la tradición culinaria Mesoamericana, con origen en el sur de México y ...

    • Genetic diversity analysis of the endangered slipper orchid Phragmipedium longifolium in Costa Rica 

      Muñoz García, Melania Nelly; Warner Pineda, Jorge; Albertazzi Castro, Federico José (2010-12)
      Phragmipedium longifolium is an endangered terrestrial orchid. In Costa Rica, these plants are found growing in small and isolated patches, some of them consisting of just four to six individuals. Information about the ...

    • Genetic diversity and geographic distribution of Bemisia tabaci and Trialeurodes vaporariorum in Costa Rica 

      Barboza Vargas, Natalia María; Esker, Paul D.; Inoue Nagata, Alice Kazuko; Moriones Alonso, Enrique (2019)
      The tobacco whitefly Bemisia tabaci (Gennadius) cryptic species complex and of the greenhouse whitefly Trialeurodes vaporariorum (Westwood) are extensively reported as destructive pests in vegetable crops worldwide. A ...

    • Genetic Diversity of Xylella fastidiosa Strains from Costa Rica, São Paulo, Brazil, and United States 

      Montero Astúa, Mauricio; Hartung, John; Aguilar Alvarez, Estela Yamileth; Chacón Díaz, Carlos; Li, Wenbin; Albertazzi Castro, Federico José; Rivera Herrero, Carmen (2007-10)
      The diversity of 42 Xylella fastidiosa strains from Costa Rica, São Paulo, Brazil, and the United States were analyzed using the sequence of the 16S rRNA gene by variable number of tandem repeat (VNTR) fragment analysis ...

    • Genipa americana and Ageratina anisochroma, two new hosts of Candidatus Phytoplasma asteris in Costa Rica 

      Villalobos Muller, William; Montero Astúa, Mauricio; Coto Morales, Teresita; Sandoval Carvajal, Izayana; Moreira Carmona, Lisela (2018-08-23)
      We report two new plant species hosts for Candidatus Phytoplasma asteris: Genipa americana (Rubiaceae) and Ageratina anisochroma (Asteraceae). Phytoplasma infections were detected by real-time loop-mediated isothermal ...

    • Genus Orthotospovirus in Costa Rica: A Central American case 

      Montero Astúa, Mauricio; Dejuk Protti, Natasha; Bermúdez Gómez, David; Vásquez Céspedes, Elena; Sandoval Carvajal, Izayana; Garita Salazar, Laura Cristina; Albertazzi Castro, Federico José; Adkins, Scott; Moreira Carmona, Lisela (2023-12-28)
      Objective/Background. The Orthotospovirus genus encompasses a range of economically significant and emerging plant viruses that affect a variety of crops globally. While the prevalence and characteristics of these ...

    • Guazuma ulmifolia (Sterculiaceae), a new natural host of 16SrXV phytoplasma in Costa Rica 

      Villalobos Muller, William; Martini, Marta; Garita Salazar, Laura Cristina; Osler, Ruggero; Moreira Carmona, Lisela; Muñoz García, Melania Nelly (2011-04)
      Guacimo trees (Guazuma ulmifolia, Sterculiaceae) showing witches’ broom symptoms (GWB), small leaves, short internodes, stunting and no flower and fruit production were observed on side roads and fences in different areas ...

    • Histological observations on maize leaf tissues infected with rayado fino virus 

      Kitajima, Elliot Watanabe; Gámez Lobo, Rodrigo (1977-03)
      Observaciones realizadas al microscopio electrónico mostraron que las células del parénquima de hojas de maíz infectadas con el virus del rayado fino (VRF) aparecían ligeramente contraídas en relación a las de hojas sanas. ...

    • Identificación del virus del mosaico del maíz, un rhabdovirus, en Costa Rica 

      Rivera Herrero, Carmen; Pereira Reyes, Reinaldo (1994)
      Maize mosaic virus (MMV), a rhabdovirus, was identified associated to maize field plants, showing stunting and continuous chlorotic stripes uniformely distributed over the leaf blade.The virus was detected in field samples ...

    • Identification and distribution of melon infecting viruses and their vectors in two provinces of Costa Rica 

      Rivera Herrero, Carmen; Villalobos Muller, William; Sánchez Vega, Marco Vinicio; Zumbado, C.; Rodríguez Solís, Carlos Mario (1993)
      Papaya ringspot potyvirus (PRSV), watermelon mosaic 2 potyvirus (WMV-2), cucumber mosaic cucumovirus (CMV) and zucchini yellow mosaic potyvirus (ZYMV), singly or in mixed infections, were identified by ELISA in melon ...

    • Incidence and some ecological aspects of severe mosaic virus in two cropping systems in Costa Rica 

      Valverde, Rodrigo A.; Moreno, Raúl; Gámez Lobo, Rodrigo (1982-03)
      La incidencia del virus del mosaico severo del frijol de costa (cowpea severe mosaic virus) es similar tanto en el cultivo individual de esta especie como en su asociación con maíz. En ambos sistemas de cultivo se registró ...

    • Incidence, Distribution, and Association of Spongospora subterranea and Potato mop-top virus in Costa Rica 

      Montero Astúa, Mauricio; Vásquez Sancho, Viviana; Turechek, William W.; Merz, Ueli; Rivera Herrero, Carmen (2008)
      A survey was conducted in 39 potato (Solanum tuberosum) fields in Costa Rica to determine incidence and association of Spongospora subterranean f. sp. subterranea and Potato mop-top pomovirus (PMTV). The fields were located ...

    • Inclusion bodies induced by Bean rugose mosaic comovirus seen under light microscopy 

      Rivera Herrero, Carmen; Moreira Carmona, Lisela (Universidad de Costa Rica, 2000)
      Two types of inclusion bodies were consistently observed under light microscopy in bean (Phaseolus vulgaris) leaf tissue infected with Bean rugose mosaic virus (BRMV), a species of the genus Comovirus, family Comoviridae. ...

    • Infección de la orquídea terrestre Phaius tankervillae (Orchidaceae) con el cymbidium mosaic potexvirus (CymMV) en Costa Rica 

      Moreira Carmona, Lisela; Villalobos Muller, William; Rodríguez Cerezo, Emilio; Rivera Herrero, Carmen (1999)
      En 1996, en un pequeño vívero comercial en la zona oeste del Valle Central de Costa Rica se observaron plantas de la orquídea terrestres Phaius tankervilliae que mostraban síntomas foliares de leves a severos de un estriado ...

    • Isolation and molecular characterization of Xylella fastidiosa from coffee plants in Costa Rica 

      Aguilar Alvarez, Estela Yamileth; Rodríguez Solís, Carlos Mario; Garita Salazar, Laura Cristina; Villalobos Muller, William; Moreira Carmona, Lisela; Hartung, John; Rivera Herrero, Carmen; Montero Astúa, Mauricio; Chacón Díaz, Carlos (2008-10)
      Coffee plants exhibiting a range of symptoms including mild to severe curling of leaf margins, chlorosis and deformation of leaves, stunting of plants, shortening of internodes, and dieback of branches have been reported ...

    • Mechanical transmission of maize rayado fino marafivirus (MRFV) to maize and barley by means of the vascular puncture technique 

      Madriz Ordeñana, Kenneth; Rojas Montero, Roy; Lundsgaard, Torben; Ramírez Fonseca, Pilar; Thordal Christensen, Hans; Collinge, David B. (2000-04)
      Maize rayado fino marafivirus (MRFV) was mechanically transmitted to kernels of three Costa Rican maize cultivars by the vascular puncture technique. A transmission rate of up to 43.2% was obtained for cultivar HC‐57. The ...