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Ultraestructura del bambú Guadua amplexifolia (Poaceaea: Bambusoideae) presente en Costa Rica
(2006-12)
Se estudió la ultraestructura anatómica de la lámina y la vaina de la hoja, así como de la bráctea del culmo, de Guadua angustifolia var. Bicolor, por medio de los micros-copio electrónico de barrido. Se encontraron ...
Citrus Huanglongbing Associated with ‘Candidatus Liberibacter asiaticus’ Present in the Northern Region of Costa Rica but Has Not Been Detected in Other Citrus- Growing Areas
(2015-12)
Since 2011, citrus Huanglongbing (HLB, ex-greening) disease has been detected in Los Chiles, Costa Rica, close to the Nicaraguan border, by the State Phytosanitary Service (Servicio Fitosanitario del Estado; SFE) and by ...
Arbuscular mycorrhizal fungi colonization of Jatropha curcas roots and its impact on growth and survival under green-house-induced hydric stress.
(2024)
Abstract: Arbuscular mycorrhizal fungi (AMF) provide benefits to host plants by enhancing nu-trition and overall fitness. In this study, AMF species were isolated from the soil rhizosphere of Jatropha curcas and were ...
Patogenicidad de hongos asociados a plantas de fresa (Fragaria ananassa) y descripción ultraestructural del patosistema
(2022-08)
Introducción. La fresa es importante en Costa Rica por su alta demanda como fruta fresca y para elaboración de mermeladas. En 2015 empezaron reportes de muerte de plantas, presumiblemente, asociada a complejos de hongos ...
Hallazgos ultraestructurales en lesiones foliares asociadas a ‘vena roja’ en helecho hoja de cuero*
Ultrastructural findings in foliar lesions associated with ‘red vein’ in leather leaf fern
(2014-02)
La vena roja del helecho hoja de cuero (Rumorah adiantiformis) se cataloga como una enfermedad de etiología desconocida, ya que no se conoce cuál es su agente o factor causal. Ésta alteración, al igual que el síndrome de ...
Occurrence of Potato Powdery Scab Caused by Spongospora subterranea f. sp. subterranea in Costa Rica
(2002-11)
Powdery scab of potatoes, caused by Spongospora subterranea (Wallr.) Lagerheim f. sp. subterranea Tomlinson, is important worldwide due to its effect on tuber quality and transmission of Potato mop-top virus. Although ...
Tolerance and biological removal of fungicides by Trichoderma species isolated from the endosphere of wild Rubiaceae plants
(2022-02-03)
The transition from conventional to organic agriculture is often challenged by the
adaptation of biological control agents to environments heavily exposed to agrochemical
pollutants. We studied Trichoderma species isolated ...
Algunos factores que afectan la transmisión del virus del rayado fino del maíz por Dalbulus maidis DeLong & Wolcott
(1974)
Previous reports have shown that the leafhopper Dalbulus maidis transmits rayado fino virus (RFV) of maize in a manner characteristic of viruses that multiply in their insect vectors. Further studies of the virus vector ...
Detection of Plantago asiatica mosaic virus in lily hybrid plants(Lilium spp.) in Costa Rica grown from imported bulbs
(2017-12)
Plantago asiatica mosaic virus (PlAMV) was detected in Costa Rica infecting lily plants showing foliar chlorotic and necrotic streaking. Virus identity was established by TEM, sequencing and ELISA. Pathogenicity was confirmed ...