Problemas fitosanitarios que amenazan la conservación de las orquídeas de Costa Rica

Orchids from private collections, nurseries and wild areas, located in different ecological regions of Costa Rica, were studied in order to know the pests and diseases affecting them. 16 insect and two mite genera were identified as pests on different orchids and 28 pathogens were found as causal agents of infec- tious diseases. The most frequent pests were: Tenthecoris orchidearum, Stethobaris sp., Xylosandrus com- pactus, Pseudococcus longispinus, Diaspis boisduvalii and Tenuipalpus pacificus. The main diseases found were caused by: Phytophthora spp., Pythium spp., Fusariun oxysporum, Fusarium spp., Sclerotium rolfsii, Colletotrichum gloeosporioides, Sphenospora spp., Uredo spp., Cymbidium Mosaic virus and Odontoglossum Ring Spot Virus. This results demonstrate the diversity of organisms producing sanitary problems on orchids in Costa Rica, and suggests the inclusion of pest and diseases management in strate- gies for orchid conservation.

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Occurrence of Cymbidium Mosaic Virus and Odontoglossum Ring-spot Virus in Korea.

Plant Disease ◽

10.1094/pd-79-0321d ◽

1995 ◽

Vol 79 ◽

pp. 321 ◽

Cited By ~ 7

Author(s):

Ki Hyun Ryu

Keyword(s):

Mosaic Virus ◽

Spot Virus ◽

Cymbidium Mosaic Virus ◽

Ring Spot

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First report of Cymbidium mosaic virus and Odontoglossum ring spot virus in Argentina

Australasian Plant Disease Notes ◽

10.1007/s13314-015-0189-7 ◽

2015 ◽

Vol 11 (1) ◽

Cited By ~ 4

Author(s):

Silvina Edith Cánovas ◽

María Celeste Ballari ◽

Claudia Fernanda Nome

Keyword(s):

Mosaic Virus ◽

Spot Virus ◽

Cymbidium Mosaic Virus ◽

First Report ◽

Ring Spot

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Comparison of ELISA and RT-PCR for the detection of Prunus necrotic ring spot virus and prune dwarf virus in almond (Prunus dulcis)

Journal of Virological Methods ◽

10.1016/j.jviromet.2003.08.014 ◽

2003 ◽

Vol 114 (1) ◽

pp. 65-69 ◽

Cited By ~ 24

Author(s):

Genet Mekuria ◽

Sunita A. Ramesh ◽

Evita Alberts ◽

Terry Bertozzi ◽

Michelle Wirthensohn ◽

...

Keyword(s):

Prunus Dulcis ◽

Dwarf Virus ◽

Rt Pcr ◽

Spot Virus ◽

Prune Dwarf Virus ◽

Ring Spot

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Properties of the single protein and two nucleic acids of tomato ring-spot virus

Canadian Journal of Botany ◽

10.1139/b77-120 ◽

1977 ◽

Vol 55 (8) ◽

pp. 1028-1037 ◽

Cited By ~ 8

Author(s):

Wayne R. Allen ◽

H. F. Dias

Keyword(s):

Nucleic Acid ◽

Nucleic Acids ◽

Gel Electrophoresis ◽

Average Molecular Weight ◽

Virus Genome ◽

Protein Subunit ◽

Spot Virus ◽

Single Protein ◽

Middle Component ◽

Ring Spot

Purified preparations of several isolates of tomato ring-spot virus were shown by rate-zonal centrifugation in sucrose and equilibrium centrifugation in CsCl to be composed of two individual nucleoprotein components. Acrylamide-gel electrophoresis showed that the lighter (middle) component contained a nucleic acid (RNA 2) that was distinct from the species (RNA 1) contained in the heavier (bottom) component. The bottom was more infectious than the middle component and infectivity was enhanced by mixing the components, indicating that the virus genome is divided between component types. Similar results were obtained from infectivity tests on the two nucleic acids. The nucleic acid contents of the middle and bottom components were about 40 and 41%, respectively. The average molecular weights of RNA 2 and RNA 1 from three virus isolates, as determined by acrylamide-gel electrophoresis, were 2.5 and 2.6 × 106, respectively. Molecular complexing between the RNA species during electrophoresis was prevented with the use of formamide. The single protein subunit from the same three isolates had an average molecular weight of about 58 000. Serological comparisons of five tomato ring-spot isolates associated with diseases of fruit trees and grapevines indicated that only the grape yellow vein strain was antigenically distinct. These and other properties indicate that this virus is similar to other members of the nepovirus group.

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