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Mostrando ítems 11-20 de 21
First Report of an Aster Yellows Subgroup 16SrI-B Phytoplasma Infecting Chayote in Costa Rica
(2002-03)
An outbreak of a witches' broom disease affected approximately 20% of plants in several chayote (Sechium edule (Jacq.) Schwartz) fields in the commercial production area of the Ujarrás Valley, Cartago Province, Costa Rica ...
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 ...
Genipa americana and Ageratina anisochroma, two new hosts of Candidatus Phytoplasma asteris in Costa Rica
(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 ...
First Report of Xylella fastidiosa Infecting Citrus in Costa Rica
(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 ...
Isolation and molecular characterization of Xylella fastidiosa from coffee plants in Costa Rica
(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 ...
Catharanthus roseus (Apocynaceae) naturally infected with diverse phytoplasmas in Costa Rica
Catharanthus roseus (Apocynaceae) naturalmente infectada con diversos fitoplasmas en Costa Rica
(2019-01-30)
Phytoplasmas (class Mollicutes) are causal agents of plant diseases with an economic impact on crops or threatening local biodiversity. A survey was conducted from 2012 to 2016 on infected Catharanthus roseus plants that ...
First Report of Xylella fastidiosa in Nerium oleander in Costa Rica
(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 the Cymbidium Mosaic Potexvirus (CymMV) Infecting the Terrestrial Orchid Phaius tankervilliae in Costa Rica
(1998-10)
In 1996, plants of the terrestrial orchid Phaius tankervilliae from a nursery in the Central Valley of Costa Rica were observed with mild to severe foliar symptoms of chlorotic streak. No differences were observed in growth, ...
First report of Sugarcane yellow leaf virus (ScYLV) in Costa Rica
(2001-03)
In Costa Rica, sugarcane plants with symptoms similar to those described for yellow leaf syndrome (YLS) (1,2) were first observed in 1994 in research plots of imported material in the midland areas of San Carlos and ...