Now showing items 21-28 of 28
Detection of Potyvirus-like Particles Associated with Oil Palms (Elaeis guineensis) in Ecuador
Oil palm (Elaeis guineensis Jacq.) seedlings showing a conspicuous mottling, composed of alternating dark green and chlorotic areas in the form of discontinuous streaks or irregular ring patterns, were observed in the ...
Guazuma ulmifolia (Sterculiaceae), a new natural host of 16SrXV phytoplasma in Costa Rica
Guazuma ulmifolia (Sterculiaceae), un nuevo hospedero natural de fitoplasmas del grupo 16SrXV en Costa Rica
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 ...
First Report of Citrus Blight in Costa Rica
Citrus blight (CB), causing a chronic decline of citrus, has been an important disease in Florida for over 100 years. CB was first reported in Brazil in the 1980s and is now responsible for the removal of nearly 10% of the ...
Population Genomic Analysis of a Bacterial Plant Pathogen: Novel Insight into the Origin of Pierce’s Disease of Grapevine in the U.S.
Invasive diseases present an increasing problem worldwide; however, genomic techniques are now available to investigate the timing and geographical origin of such introductions. We employed genomic techniques to demonstrate ...
Catharanthus roseus (Apocynaceae) naturally infected with diverse phytoplasmas in Costa Rica
Catharanthus roseus (Apocynaceae) naturalmente infectada con diversos fitoplasmas en Costa Rica
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 ...
Isolation and molecular characterization of Xylella fastidiosa from coffee plants in Costa Rica.
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 ...
First Report of Xylella fastidiosa in Avocado in Costa Rica
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 ...
‘Candidatus Phytoplasma costaricanum’ a novel phytoplasma associated with an emerging disease in soybean (Glycine max).
A novel phytoplasma, designated strain SoyST1c1, associated with a newly emerging disease in soybean (Glycine max), known as soybean stunt (SoyST), was found in 2002 in a soybean plantation in Alajuela Province, Costa Rica. ...